reading of multidomain stl files into separate Poly_Triangulation objects (draft)

2025-08-09 13:22:24 +03:00 · 2019-10-16 08:51:29 +03:00
5403 changed files with 181860 additions and 146493 deletions
--- a/.gitignore
+++ b/.gitignore
@@ -12,6 +12,12 @@
 win32
 win64

+# standard names of directories for objects and binaries for samples
+bin
+obj
+Debug
+Release
+
 # project files and artifacts
 /adm/msvc
 /adm/wnt
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -101,7 +101,7 @@ if (BUILD_USE_PCH)
  # Load Cotire tool for accelerating build procedure
  include(cotire)

-  # Set Cotire to ignore lxx, pxx, gxx
+  # Set Cotire to ignore lxx, pxx, gxx 
  set (COTIRE_ADDITIONAL_PREFIX_HEADER_IGNORE_EXTENSIONS "lxx;pxx;gxx" CACHE STRING "Set Cotire to ignore OCCT specific files that can be #included" FORCE)

  # Set priority for inclusion of system headers in PCH to reduce problems
@@ -165,7 +165,7 @@ if (NOT DEFINED CMAKE_INSTALL_PREFIX_PREV)
 elseif (NOT "${CMAKE_INSTALL_PREFIX_PREV}" STREQUAL "${CMAKE_INSTALL_PREFIX}")
  # CMAKE_INSTALL_PREFIX has been changed at previous step
  set (CMAKE_INSTALL_PREFIX_PREV "${CMAKE_INSTALL_PREFIX}" CACHE INTERNAL "" FORCE)
-
+  
  # INSTALL_DIR is required to be updated
  set (INSTALL_DIR "${CMAKE_INSTALL_PREFIX}" CACHE PATH "${INSTALL_DIR_DESCR}" FORCE)
 endif()
@@ -177,10 +177,10 @@ elseif (NOT "${INSTALL_DIR_PREV}" STREQUAL "${INSTALL_DIR}")
  # INSTALL_DIR has been changed at previous step
  set (INSTALL_DIR_PREV "${INSTALL_DIR}" CACHE INTERNAL "" FORCE)

-  # sync CMAKE_INSTALL_PREFIX with INSTALL_DIR
+  # sync CMAKE_INSTALL_PREFIX with INSTALL_DIR 
  set (CMAKE_INSTALL_PREFIX "${INSTALL_DIR}" CACHE INTERNAL "" FORCE)

-  # set CMAKE_INSTALL_PREFIX_PREV to avoid the reset of structure of the install folder
+  # set CMAKE_INSTALL_PREFIX_PREV to avoid the reset of structure of the install folder 
  set (CMAKE_INSTALL_PREFIX_PREV "${INSTALL_DIR}" CACHE INTERNAL "" FORCE)
 endif()

@@ -406,7 +406,7 @@ if (NOT DEFINED BUILD_DOC_Overview)
  set (DO_ONLY_CHECK_FOR_DOXYGEN ON)
  OCCT_INCLUDE_CMAKE_FILE ("adm/cmake/doxygen")
  set (DO_ONLY_CHECK_FOR_DOXYGEN OFF)
-
+  
  if (CAN_DOXYGEN_BE_USED)
    message (STATUS "Info. Overview building is turned on")
  endif()
@@ -495,7 +495,7 @@ OCCT_INCLUDE_CMAKE_FILE ("adm/cmake/occt_csf")
 if (USE_TCL)
  message (STATUS "Info: TCL is used by OCCT")
  OCCT_INCLUDE_CMAKE_FILE ("adm/cmake/tcl")
-
+  
  message (STATUS "Info: TK is used by OCCT")
  OCCT_INCLUDE_CMAKE_FILE ("adm/cmake/tk")
 else()
@@ -523,7 +523,7 @@ if (USE_VTK)
  OCCT_INCLUDE_CMAKE_FILE ("adm/cmake/vtk")
 else()
  OCCT_CHECK_AND_UNSET_GROUP ("3RDPARTY_VTK")
-
+  
  if (NOT CAN_USE_VTK EQUAL -1)
    message (STATUS "Info: TKIVtk and TKIVtkDraw toolkits excluded due to VTK usage is disabled")

@@ -565,26 +565,6 @@ else()
  OCCT_CHECK_AND_UNSET ("INSTALL_FREEIMAGE")
 endif()

-# OpenVR
-# search for CSF_OpenVR variable in EXTERNLIB of each being used toolkit
-OCCT_IS_PRODUCT_REQUIRED (CSF_OpenVR CAN_USE_OPENVR)
-if (CAN_USE_OPENVR)
-  set (USE_OPENVR OFF CACHE BOOL "${USE_OPENVR_DESCR}")
-
-  if (USE_OPENVR)
-    add_definitions (-DHAVE_OPENVR)
-    OCCT_INCLUDE_CMAKE_FILE ("adm/cmake/openvr")
-  else()
-    OCCT_CHECK_AND_UNSET_GROUP ("3RDPARTY_OPENVR")
-    OCCT_CHECK_AND_UNSET ("INSTALL_OPENVR")
-  endif()
-else()
-  OCCT_CHECK_AND_UNSET ("USE_OPENVR")
-
-  OCCT_CHECK_AND_UNSET_GROUP ("3RDPARTY_OPENVR")
-  OCCT_CHECK_AND_UNSET ("INSTALL_OPENVR")
-endif()
-
 # FFmpeg
 # search for CSF_FFmpeg variable in EXTERNLIB of each being used toolkit
 OCCT_IS_PRODUCT_REQUIRED (CSF_FFmpeg CAN_USE_FFMPEG)
@@ -714,14 +694,14 @@ else()
  OCCT_CHECK_AND_UNSET ("3RDPARTY_DOT_EXECUTABLE")
 endif()

-# bison
+# bison 
 if (BUILD_YACCLEX)
  OCCT_INCLUDE_CMAKE_FILE ("adm/cmake/bison")
 else()
  OCCT_CHECK_AND_UNSET ("3RDPARTY_BISON_EXECUTABLE")
 endif()

-# flex
+# flex 
 if (BUILD_YACCLEX)
  OCCT_INCLUDE_CMAKE_FILE ("adm/cmake/flex")
 else()
@@ -800,7 +780,7 @@ set (CMAKE_ARCHIVE_OUTPUT_DIRECTORY_DEBUG "${CMAKE_BINARY_DIR}/${OS_WITH_BIT}/${
 set (CMAKE_RUNTIME_OUTPUT_DIRECTORY_DEBUG "${CMAKE_BINARY_DIR}/${OS_WITH_BIT}/${COMPILER}/bind")
 set (CMAKE_LIBRARY_OUTPUT_DIRECTORY_DEBUG "${CMAKE_BINARY_DIR}/${OS_WITH_BIT}/${COMPILER}/libd")

-if (WIN32)
+if (WIN32) 
  set (CMAKE_LIBRARY_OUTPUT_DIRECTORY_RELEASE        "${CMAKE_BINARY_DIR}/${OS_WITH_BIT}/${COMPILER}/bin")
  set (CMAKE_LIBRARY_OUTPUT_DIRECTORY_RELWITHDEBINFO "${CMAKE_BINARY_DIR}/${OS_WITH_BIT}/${COMPILER}/bini")
  set (CMAKE_LIBRARY_OUTPUT_DIRECTORY_DEBUG          "${CMAKE_BINARY_DIR}/${OS_WITH_BIT}/${COMPILER}/bind")
@@ -869,11 +849,9 @@ if (INSTALL_SAMPLES)
  OCCT_INSTALL_FILE_OR_DIR ("samples/java" "${INSTALL_DIR_SAMPLES}")
  OCCT_INSTALL_FILE_OR_DIR ("samples/ocafsamples" "${INSTALL_DIR_SAMPLES}")
  OCCT_INSTALL_FILE_OR_DIR ("samples/qt" "${INSTALL_DIR_SAMPLES}")
-  OCCT_INSTALL_FILE_OR_DIR ("samples/OCCTOverview/code" "${INSTALL_DIR_SAMPLES}/OCCTOverview")

  install (FILES "${CMAKE_BINARY_DIR}/env.samples.${SCRIPT_EXT}" DESTINATION "${INSTALL_DIR_SAMPLES}/qt/FuncDemo" RENAME "env.${SCRIPT_EXT}")
  install (FILES "${CMAKE_BINARY_DIR}/env.samples.${SCRIPT_EXT}" DESTINATION "${INSTALL_DIR_SAMPLES}/qt/IESample" RENAME "env.${SCRIPT_EXT}")
-  install (FILES "${CMAKE_BINARY_DIR}/env.samples.${SCRIPT_EXT}" DESTINATION "${INSTALL_DIR_SAMPLES}/qt/OCCTOverview" RENAME "env.${SCRIPT_EXT}")
  install (FILES "${CMAKE_BINARY_DIR}/env.samples.${SCRIPT_EXT}" DESTINATION "${INSTALL_DIR_SAMPLES}/qt/Tutorial" RENAME "env.${SCRIPT_EXT}")
 endif()

@@ -952,9 +930,6 @@ if (WIN32)
  OCCT_CONFIGURE ("adm/templates/env.${SCRIPT_EXT}.in" "env.${SCRIPT_EXT}")
  # install env script
  install (FILES "${CMAKE_BINARY_DIR}/env.${SCRIPT_EXT}" DESTINATION "${INSTALL_DIR_SCRIPT}")
-  # copy build.bat and install.bat scripts to CMake binary folder
-  OCCT_COPY_FILE_OR_DIR ("adm/templates/build.bat" "${CMAKE_BINARY_DIR}")
-  OCCT_COPY_FILE_OR_DIR ("adm/templates/install.bat" "${CMAKE_BINARY_DIR}")
 else()
  set (SUB_ENV_NAME "env.${SCRIPT_EXT}")
  set (SUB_ENV_BUILD_NAME "env.install.${SCRIPT_EXT}")
@@ -987,15 +962,6 @@ if (BUILD_SAMPLES_QT)
    OCCT_INSTALL_FILE_OR_DIR ("samples/${RESOURCE}" "${INSTALL_DIR_RESOURCE}/samples")
    #message("Copy Sample resources: samples/${RESOURCE} into ${INSTALL_DIR_RESOURCE}/samples")
  endforeach()
-
-  ## Copy sources of OCCTOverview for using in the sample
-  OCCT_INSTALL_FILE_OR_DIR ("samples/OCCTOverview/code/DataExchangeSamples.cxx" "${INSTALL_DIR_SAMPLES}/OCCTOverview/code")
-  OCCT_INSTALL_FILE_OR_DIR ("samples/OCCTOverview/code/OcafSamples.cxx" "${INSTALL_DIR_SAMPLES}/OCCTOverview/code")
-  OCCT_INSTALL_FILE_OR_DIR ("samples/OCCTOverview/code/GeometrySamples.cxx" "${INSTALL_DIR_SAMPLES}/OCCTOverview/code")
-  OCCT_INSTALL_FILE_OR_DIR ("samples/OCCTOverview/code/TopologySamples.cxx" "${INSTALL_DIR_SAMPLES}/OCCTOverview/code")
-  OCCT_INSTALL_FILE_OR_DIR ("samples/OCCTOverview/code/TriangulationSamples.cxx" "${INSTALL_DIR_SAMPLES}/OCCTOverview/code")
-  OCCT_INSTALL_FILE_OR_DIR ("samples/OCCTOverview/code/Viewer2dSamples.cxx" "${INSTALL_DIR_SAMPLES}/OCCTOverview/code")
-  OCCT_INSTALL_FILE_OR_DIR ("samples/OCCTOverview/code/Viewer3dSamples.cxx" "${INSTALL_DIR_SAMPLES}/OCCTOverview/code")
 endif()


@@ -1213,7 +1179,7 @@ foreach (OCCT_MODULE ${OCCT_MODULES_ENABLED})
  install(EXPORT OpenCASCADE${OCCT_MODULE}Targets DESTINATION "${INSTALL_DIR_CMAKE}")
 endforeach()

-# Update generated OpenCASCADETargets-*.cmake files
+# Update generated OpenCASCADETargets-*.cmake files 
 # to have correct paths to libraries depending on the configuration
 OCCT_UPDATE_TARGET_FILE ()

--- a/adm/RESOURCES
+++ b/adm/RESOURCES
@@ -3,7 +3,6 @@ StdResource
 SHMessage
 Textures
 Shaders
-XRResources
 XSMessage
 XSTEPResource
 XmlOcafResource
--- a/adm/SAMPLES
+++ b/adm/SAMPLES
@@ -1 +1 @@
-qt AndroidQt FuncDemo IESample Tutorial OCCTOverview
+qt AndroidQt FuncDemo IESample Tutorial
--- a/adm/SAMPLES_RESOURCES
+++ b/adm/SAMPLES_RESOURCES
@@ -1,3 +1,2 @@
 qt/Common/res/
-qt/Tutorial/res/
-qt/OCCTOverview/res/
+qt/Tutorial/res/
--- a/adm/UDLIST
+++ b/adm/UDLIST
@@ -108,7 +108,6 @@ n BRepMesh
 n BRepMeshData
 n BRepOffset
 n BRepOffsetAPI
-n BRepPreviewAPI
 n BRepPrim
 n BRepPrimAPI
 n BRepProj
@@ -202,7 +201,6 @@ n InterfaceGraphic
 n AIS
 n Aspect
 n DsgPrs
-n PrsDim
 n Graphic3d
 n Image
 n Media
@@ -216,13 +214,13 @@ n SelectBasics
 n SelectMgr
 n StdPrs
 n StdSelect
+n TColQuantity
 n V3d
 n WNT
 n Xw
 n Cocoa
 r Textures
 r Shaders
-r XRResources
 t TKMeshVS
 t TKOpenGl
 t TKD3DHost
@@ -445,23 +443,3 @@ t TKRWMesh
 n RWGltf
 n RWMesh
 n RWObj
-n DFBrowser
-n DFBrowserPane
-n DFBrowserPaneXDE
-n ShapeView
-n TInspector
-n TInspectorAPI
-x TInspectorEXE
-t TKDFBrowser
-t TKShapeView
-t TKTInspector
-t TKTInspectorAPI
-t TKToolsDraw
-t TKTreeModel
-t TKView
-t TKVInspector
-n ToolsDraw
-n TreeModel
-n View
-n ViewControl
-n VInspector
--- a/adm/cmake/3rdparty_macro.cmake
+++ b/adm/cmake/3rdparty_macro.cmake
@@ -97,12 +97,12 @@ macro (THIRDPARTY_PRODUCT PRODUCT_NAME HEADER_NAME LIBRARY_CSF_NAME LIBRARY_NAME
    if (3RDPARTY_${PRODUCT_NAME}_DIR AND EXISTS "${3RDPARTY_${PRODUCT_NAME}_DIR}")
      find_path (3RDPARTY_${PRODUCT_NAME}_INCLUDE_DIR NAMES ${HEADER_NAME}
                                                      PATHS ${3RDPARTY_${PRODUCT_NAME}_DIR}
-                                                      PATH_SUFFIXES include inc headers
+                                                      PATH_SUFFIXES include inc
                                                      CMAKE_FIND_ROOT_PATH_BOTH
                                                      NO_DEFAULT_PATH)
    else()
      find_path (3RDPARTY_${PRODUCT_NAME}_INCLUDE_DIR NAMES ${HEADER_NAME}
-                                                      PATH_SUFFIXES include inc headers
+                                                      PATH_SUFFIXES include inc
                                                      CMAKE_FIND_ROOT_PATH_BOTH)
    endif()
  endif()
@@ -125,14 +125,10 @@ macro (THIRDPARTY_PRODUCT PRODUCT_NAME HEADER_NAME LIBRARY_CSF_NAME LIBRARY_NAME
        set (${PRODUCT_NAME}_PATH_SUFFIXES lib)
        if (WIN32)
          set (${PRODUCT_NAME}_PATH_SUFFIXES ${${PRODUCT_NAME}_PATH_SUFFIXES} win${COMPILER_BITNESS}/${COMPILER}/lib)
-          set (${PRODUCT_NAME}_PATH_SUFFIXES ${${PRODUCT_NAME}_PATH_SUFFIXES} lib/win${COMPILER_BITNESS})
        endif()
        if (ANDROID)
          set (${PRODUCT_NAME}_PATH_SUFFIXES ${${PRODUCT_NAME}_PATH_SUFFIXES} libs/${ANDROID_ABI})
        endif()
-        if(UNIX AND NOT APPLE AND NOT ANDROID)
-          set (${PRODUCT_NAME}_PATH_SUFFIXES ${${PRODUCT_NAME}_PATH_SUFFIXES} lib/linux${COMPILER_BITNESS})
-        endif()

        # set 3RDPARTY_${PRODUCT_NAME}_LIBRARY as notfound, otherwise find_library can't assign a new value to 3RDPARTY_${PRODUCT_NAME}_LIBRARY
        set (3RDPARTY_${PRODUCT_NAME}_LIBRARY_${LIBRARY_NAME_SUFFIX} "3RDPARTY_${PRODUCT_NAME}_LIBRARY_${LIBRARY_NAME_SUFFIX}-NOTFOUND" CACHE FILEPATH "The path to ${PRODUCT_NAME} library \"${LIBRARY_NAME}\"" FORCE)
@@ -188,7 +184,7 @@ macro (THIRDPARTY_PRODUCT PRODUCT_NAME HEADER_NAME LIBRARY_CSF_NAME LIBRARY_NAME
          if ((3RDPARTY_${PRODUCT_NAME}_DIR AND EXISTS "${3RDPARTY_${PRODUCT_NAME}_DIR}") OR (3RDPARTY_${PRODUCT_NAME}_DLL_DIR_${LIBRARY_NAME} AND EXISTS "${3RDPARTY_${PRODUCT_NAME}_DLL_DIR_${LIBRARY_NAME}}"))
            find_library (3RDPARTY_${PRODUCT_NAME}_DLL_${LIBRARY_NAME_SUFFIX}  NAMES ${LIBRARY_NAME}
                                                                               PATHS "${3RDPARTY_${PRODUCT_NAME}_DLL_DIR_${LIBRARY_NAME}}" "${3RDPARTY_${PRODUCT_NAME}_DIR}"
-                                                                               PATH_SUFFIXES bin win${COMPILER_BITNESS}/${COMPILER}/bin bin/win${COMPILER_BITNESS}
+                                                                               PATH_SUFFIXES bin  win${COMPILER_BITNESS}/${COMPILER}/bin
                                                                               NO_DEFAULT_PATH)
            if (3RDPARTY_${PRODUCT_NAME}_DLL_${LIBRARY_NAME_SUFFIX} STREQUAL "3RDPARTY_${PRODUCT_NAME}_DLL_${LIBRARY_NAME_SUFFIX}-NOTFOUND")
              # find directory recursive
@@ -242,7 +238,6 @@ macro (THIRDPARTY_PRODUCT PRODUCT_NAME HEADER_NAME LIBRARY_CSF_NAME LIBRARY_NAME
      if (INSTALL_${PRODUCT_NAME})
        OCCT_MAKE_OS_WITH_BITNESS()
        OCCT_MAKE_COMPILER_SHORT_NAME()
-        set (USED_3RDPARTY_${PRODUCT_NAME}_DIR "")

        if (WIN32)
          if (SINGLE_GENERATOR)
@@ -285,17 +280,14 @@ macro (THIRDPARTY_PRODUCT PRODUCT_NAME HEADER_NAME LIBRARY_CSF_NAME LIBRARY_NAME
        endif()
      else()
        # the library directory for using by the executable
-        foreach (LIBRARY_NAME ${${LIBRARY_CSF_NAME}})
-          string (REPLACE "." "" LIBRARY_NAME_SUFFIX "${LIBRARY_NAME}")
+      foreach (LIBRARY_NAME ${${LIBRARY_CSF_NAME}})
+        string (REPLACE "." "" LIBRARY_NAME_SUFFIX "${LIBRARY_NAME}")
          if (WIN32)
            set (USED_3RDPARTY_${PRODUCT_NAME}_DIRS "${3RDPARTY_${PRODUCT_NAME}_DLL_DIR_${LIBRARY_NAME_SUFFIX}};${USED_3RDPARTY_${PRODUCT_NAME}_DIRS}")
          else()
            set (USED_3RDPARTY_${PRODUCT_NAME}_DIRS "${3RDPARTY_${PRODUCT_NAME}_LIBRARY_DIR_${LIBRARY_NAME_SUFFIX}}:${USED_3RDPARTY_${PRODUCT_NAME}_DIRS}")
          endif()
        endforeach()
-        if (WIN32)
-          set (USED_3RDPARTY_${PRODUCT_NAME}_DIR ${3RDPARTY_${PRODUCT_NAME}_DLL_DIR_${LIBRARY_NAME_SUFFIX}})
-        endif()
      endif()

      mark_as_advanced (3RDPARTY_${PRODUCT_NAME}_LIBRARY_${LIBRARY_NAME_SUFFIX} 3RDPARTY_${PRODUCT_NAME}_DLL_${LIBRARY_NAME_SUFFIX})
--- a/adm/cmake/bison.cmake
+++ b/adm/cmake/bison.cmake
@@ -2,26 +2,19 @@

 # execute FindBISON script by "find_package (Bison)" is required to define BISON_TARGET macro

-# delete obsolete 3RDPARTY_BISON_EXECUTABLE cache variable (not used anymore)
-unset (3RDPARTY_BISON_EXECUTABLE CACHE)
-
-# delete BISON_EXECUTABLE cache variable if it is empty, otherwise find_package will fail
-# without reasonable diagnostic
-if (NOT BISON_EXECUTABLE OR NOT EXISTS "${BISON_EXECUTABLE}")
-  unset (BISON_EXECUTABLE CACHE)
+if (NOT DEFINED 3RDPARTY_BISON_EXECUTABLE)
+  set (3RDPARTY_BISON_EXECUTABLE "" CACHE FILEPATH "The path to the bison command")
 endif()

-# Add paths to 3rdparty subfolders containing name "bison" to CMAKE_PROGRAM_PATH variable to make
-# these paths searhed by find_package
-if (3RDPARTY_DIR)
-  file (GLOB BISON_PATHS LIST_DIRECTORIES true "${3RDPARTY_DIR}/*bison*/")
-  foreach (candidate_path ${BISON_PATHS})
-    if (IS_DIRECTORY ${candidate_path})
-      list (APPEND CMAKE_PROGRAM_PATH ${candidate_path})
-    endif()
-  endforeach()
+# BISON_EXECUTABLE is required by BISON_TARGET macro and should be defined
+set (BISON_EXECUTABLE "${3RDPARTY_BISON_EXECUTABLE}" CACHE FILEPATH "path to the bison executable" FORCE)
+
+find_package (BISON)
+
+if (BISON_FOUND)
+  set (3RDPARTY_BISON_EXECUTABLE "${BISON_EXECUTABLE}" CACHE FILEPATH "The Path to the bison command" FORCE)
 endif()
- 
-# bison 3.2 is required because it provides options to avoid generation of redundant header
-# files and embedding of local paths in the generated code
-find_package (BISON 3.2)
+
+if (NOT 3RDPARTY_BISON_EXECUTABLE OR NOT EXISTS "${3RDPARTY_BISON_EXECUTABLE}")
+  list (APPEND 3RDPARTY_NOT_INCLUDED 3RDPARTY_BISON_EXECUTABLE)
+endif()
--- a/adm/cmake/flex.cmake
+++ b/adm/cmake/flex.cmake
@@ -2,34 +2,19 @@

 # execute FindFLEX script by "find_package (Flex)" is required to define FLEX_TARGET macro

-# delete obsolete 3RDPARTY_FLEX_EXECUTABLE cache variable (not used anymore)
-unset (3RDPARTY_FLEX_EXECUTABLE CACHE)
-
-# delete FLEX_EXECUTABLE cache variable if it is empty, otherwise find_package will fail
-# without reasonable diagnostic
-if (NOT FLEX_EXECUTABLE OR NOT EXISTS "${FLEX_EXECUTABLE}")
-  unset (FLEX_EXECUTABLE CACHE)
-endif()
-if (NOT FLEX_INCLUDE_DIR OR NOT EXISTS "${FLEX_INCLUDE_DIR}")
-  unset (FLEX_INCLUDE_DIR CACHE)
+if (NOT DEFINED 3RDPARTY_FLEX_EXECUTABLE)
+  set (3RDPARTY_FLEX_EXECUTABLE "" CACHE FILEPATH "The Path to the flex command")
 endif()

-# Add paths to 3rdparty subfolders containing name "flex" to CMAKE_PROGRAM_PATH and 
-# CMAKE_INCLUDE_PATH variables to make these paths searhed by find_package
-if (3RDPARTY_DIR)
-  file (GLOB FLEX_PATHS LIST_DIRECTORIES true "${3RDPARTY_DIR}/*flex*")
-  foreach (candidate_path ${FLEX_PATHS})
-    if (IS_DIRECTORY ${candidate_path})
-      list (APPEND CMAKE_PROGRAM_PATH ${candidate_path})
-      list (APPEND CMAKE_INCLUDE_PATH ${candidate_path})
-    endif()
-  endforeach()
-endif()
- 
-# flex 2.5.37 is required because closest known lower version, 2.5.3 from WOK 6.8.0,
-# generates code which is unusable on Windows (includes unistd.h without any way to avoid this)
-find_package (FLEX 2.5.37)
+# FLEX_EXECUTABLE is required by FLEX_TARGET macro and should be defined
+set (FLEX_EXECUTABLE "${3RDPARTY_FLEX_EXECUTABLE}" CACHE FILEPATH "path to the flex executable" FORCE)

-if (NOT FLEX_FOUND OR NOT FLEX_INCLUDE_DIR OR NOT EXISTS "${FLEX_INCLUDE_DIR}/FlexLexer.h")
-  list (APPEND 3RDPARTY_NOT_INCLUDED FLEX_INCLUDE_DIR)
+find_package (FLEX)
+
+if (FLEX_FOUND)
+  set (3RDPARTY_FLEX_EXECUTABLE "${FLEX_EXECUTABLE}" CACHE FILEPATH "The Path to the flex command" FORCE)
 endif()
+
+if (NOT 3RDPARTY_FLEX_EXECUTABLE OR NOT EXISTS "${3RDPARTY_FLEX_EXECUTABLE}")
+  list (APPEND 3RDPARTY_NOT_INCLUDED 3RDPARTY_FLEX_EXECUTABLE)
+endif()
--- a/adm/cmake/occt_csf.cmake
+++ b/adm/cmake/occt_csf.cmake
@@ -42,13 +42,6 @@ else()
  endif()
 endif()

-# OpenVR
-if (USE_OPENVR)
-  set (CSF_OpenVR "openvr_api")
-else()
-  set (CSF_OpenVR)
-endif()
-
 # TCL/TK
 if (USE_TCL)
  if (WIN32)
@@ -115,7 +108,6 @@ else()
  elseif (ANDROID)
    set (CSF_ThreadLibs  "c")
    set (CSF_OpenGlLibs  "EGL GLESv2")
-    set (CSF_androidlog  "log")
  elseif (UNIX)
    set (CSF_ThreadLibs  "pthread rt stdc++")
    if (USE_GLES2)
--- a/adm/cmake/occt_defs_flags.cmake
+++ b/adm/cmake/occt_defs_flags.cmake
@@ -111,31 +111,34 @@ elseif (CMAKE_COMPILER_IS_GNUCC OR CMAKE_COMPILER_IS_GNUCXX OR "${CMAKE_CXX_COMP
  endif()
 endif()

-if ("x${CMAKE_CXX_COMPILER_ID}" STREQUAL "xClang")
-  if (APPLE)
-    # CLang can be used with both libstdc++ and libc++, however on OS X libstdc++ is outdated.
-    set (CMAKE_CXX_FLAGS "-std=c++0x -stdlib=libc++ ${CMAKE_CXX_FLAGS}")
-  elseif(NOT WIN32)
-    # CLang for Windows (at least CLang 8.0 distributed with VS 2019)
-    # does not support option "-std=c++0x"
-    set (CMAKE_CXX_FLAGS "-std=c++0x ${CMAKE_CXX_FLAGS}")
+if(MINGW)
+  # Set default release optimization option to O2 instead of O3, since in
+  # some OCCT related examples, this gives significantly smaller binaries
+  # at comparable performace with MinGW-w64.
+  string (REGEX MATCH "-O3" IS_O3_CXX "${CMAKE_CXX_FLAGS_RELEASE}")
+  if (IS_O3_CXX)
+    string (REGEX REPLACE "-O3" "-O2" CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE}")
+  else()
+    set (CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -O2")
  endif()
-  # Optimize size of binaries
-  set (CMAKE_SHARED_LINKER_FLAGS "-Wl,-s ${CMAKE_SHARED_LINKER_FLAGS}")
-elseif(MINGW)
+
+  set (CMAKE_CXX_FLAGS "-std=gnu++0x ${CMAKE_CXX_FLAGS}")
  add_definitions(-D_WIN32_WINNT=0x0501)
  # workaround bugs in mingw with vtable export
  set (CMAKE_SHARED_LINKER_FLAGS "-Wl,--export-all-symbols")
-
-  # Require C++11
-  set (CMAKE_CXX_FLAGS "-std=gnu++0x ${CMAKE_CXX_FLAGS}")
-  # Optimize size of binaries
-  set (CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -s")
-  set (CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE} -s")
+elseif ("x${CMAKE_CXX_COMPILER_ID}" STREQUAL "xClang")
+  if (APPLE)
+    # CLang can be used with both libstdc++ and libc++, however on OS X libstdc++ is outdated.
+    set (CMAKE_CXX_FLAGS "-std=c++0x -stdlib=libc++ ${CMAKE_CXX_FLAGS}")
+  else()
+    set (CMAKE_CXX_FLAGS "-std=c++0x ${CMAKE_CXX_FLAGS}")
+  endif()
 elseif (DEFINED CMAKE_COMPILER_IS_GNUCXX)
-  # Require C++11
  set (CMAKE_CXX_FLAGS "-std=c++0x ${CMAKE_CXX_FLAGS}")
-  # Optimize size of binaries
+endif()
+
+# Optimize size of binaries
+if (CMAKE_COMPILER_IS_GNUCC OR CMAKE_COMPILER_IS_GNUCXX OR MINGW)
  set (CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -s")
  set (CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE} -s")
 endif()
--- a/adm/cmake/occt_macros.cmake
+++ b/adm/cmake/occt_macros.cmake
@@ -12,12 +12,18 @@ macro (OCCT_CHECK_AND_UNSET VARNAME)
  endif()
 endmacro()

-macro (OCCT_CHECK_AND_UNSET_GROUP GROUPNAME)
-  get_cmake_property(VARS VARIABLES)
-  string (REGEX MATCHALL "(^|;)${GROUPNAME}[A-Za-z0-9_]*" GROUPNAME_VARS "${VARS}")
-  foreach(GROUPNAME_VAR ${GROUPNAME_VARS})
-    OCCT_CHECK_AND_UNSET(${GROUPNAME_VAR})
-  endforeach()
+macro (OCCT_CHECK_AND_UNSET_GROUP VARNAME)
+  OCCT_CHECK_AND_UNSET ("${VARNAME}_DIR")
+
+  OCCT_CHECK_AND_UNSET ("${VARNAME}_INCLUDE_DIR")
+
+  OCCT_CHECK_AND_UNSET ("${VARNAME}_LIBRARY")
+  OCCT_CHECK_AND_UNSET ("${VARNAME}_LIBRARY_DIR")
+
+  if (WIN32)
+    OCCT_CHECK_AND_UNSET ("${VARNAME}_DLL")
+    OCCT_CHECK_AND_UNSET ("${VARNAME}_DLL_DIR")
+  endif()
 endmacro()

 macro (OCCT_CHECK_AND_UNSET_INSTALL_DIR_SUBDIRS)
--- a/adm/cmake/occt_toolkit.cmake
+++ b/adm/cmake/occt_toolkit.cmake
@@ -57,140 +57,117 @@ foreach (OCCT_PACKAGE ${USED_PACKAGES})
    set (OCCT_PACKAGE_NAME "${OCCT_PACKAGE}")
  endif()

-  if (WIN32)
-    list (APPEND PRECOMPILED_DEFS "-D__${OCCT_PACKAGE_NAME}_DLL")
-  endif()
-
-  set (SOURCE_FILES)
-  set (HEADER_FILES)
-
-  # Generate Flex and Bison files
-  if (${BUILD_YACCLEX})
-    # flex files
-    OCCT_ORIGIN_AND_PATCHED_FILES ("${RELATIVE_SOURCES_DIR}/${OCCT_PACKAGE}" "*[.]lex" SOURCE_FILES_FLEX)
-    list (LENGTH SOURCE_FILES_FLEX SOURCE_FILES_FLEX_LEN)
-
-    # bison files
-    OCCT_ORIGIN_AND_PATCHED_FILES ("${RELATIVE_SOURCES_DIR}/${OCCT_PACKAGE}" "*[.]yacc" SOURCE_FILES_BISON)
-    list (LENGTH SOURCE_FILES_BISON SOURCE_FILES_BISON_LEN)
-
-    if (${SOURCE_FILES_FLEX_LEN} EQUAL ${SOURCE_FILES_BISON_LEN} AND NOT ${SOURCE_FILES_FLEX_LEN} EQUAL 0)
-      
-      list (SORT SOURCE_FILES_FLEX)
-      list (SORT SOURCE_FILES_BISON)
-
-      math (EXPR SOURCE_FILES_FLEX_LEN "${SOURCE_FILES_FLEX_LEN} - 1")
-      foreach (FLEX_FILE_INDEX RANGE ${SOURCE_FILES_FLEX_LEN})
-
-        list (GET SOURCE_FILES_FLEX ${FLEX_FILE_INDEX} CURRENT_FLEX_FILE)
-        get_filename_component (CURRENT_FLEX_FILE_NAME ${CURRENT_FLEX_FILE} NAME_WE)
-
-        list (GET SOURCE_FILES_BISON ${FLEX_FILE_INDEX} CURRENT_BISON_FILE)
-        get_filename_component (CURRENT_BISON_FILE_NAME ${CURRENT_BISON_FILE} NAME_WE)
-          
-        string (COMPARE EQUAL ${CURRENT_FLEX_FILE_NAME} ${CURRENT_BISON_FILE_NAME} ARE_FILES_EQUAL)
-
-        if (EXISTS "${CURRENT_FLEX_FILE}" AND EXISTS "${CURRENT_BISON_FILE}" AND ${ARE_FILES_EQUAL})
-
-          # Note: files are generated in original source directory (not in patch!)
-          set (FLEX_BISON_TARGET_DIR "${CMAKE_SOURCE_DIR}/${RELATIVE_SOURCES_DIR}/${OCCT_PACKAGE}")
-
-          # choose apropriate extension for generated files: "cxx" if source file contains
-          # instruction to generate C++ code, "c" otherwise
-          set (BISON_OUTPUT_FILE_EXT "c")
-          set (FLEX_OUTPUT_FILE_EXT "c")
-          file (STRINGS "${CURRENT_BISON_FILE}" FILE_BISON_CONTENT)
-          foreach (FILE_BISON_CONTENT_LINE ${FILE_BISON_CONTENT})
-            string (REGEX MATCH "%language \"C\\+\\+\"" CXX_BISON_LANGUAGE_FOUND ${FILE_BISON_CONTENT_LINE})
-            if (CXX_BISON_LANGUAGE_FOUND)
-              set (BISON_OUTPUT_FILE_EXT "cxx")
-            endif()
-          endforeach()
-          file (STRINGS "${CURRENT_FLEX_FILE}" FILE_FLEX_CONTENT)
-          foreach (FILE_FLEX_CONTENT_LINE ${FILE_FLEX_CONTENT})
-            string (REGEX MATCH "%option c\\+\\+" CXX_FLEX_LANGUAGE_FOUND ${FILE_FLEX_CONTENT_LINE})
-            if (CXX_FLEX_LANGUAGE_FOUND)
-              set (FLEX_OUTPUT_FILE_EXT "cxx")
-
-              # install copy of FlexLexer.h locally to allow further building without flex
-              if (FLEX_INCLUDE_DIR AND EXISTS "${FLEX_INCLUDE_DIR}/FlexLexer.h")
-                configure_file("${FLEX_INCLUDE_DIR}/FlexLexer.h" "${FLEX_BISON_TARGET_DIR}/FlexLexer.h" @ONLY NEWLINE_STYLE LF)
-              endif()
-            endif()
-          endforeach()
-          set (BISON_OUTPUT_FILE ${CURRENT_BISON_FILE_NAME}.tab.${BISON_OUTPUT_FILE_EXT})
-          set (FLEX_OUTPUT_FILE lex.${CURRENT_FLEX_FILE_NAME}.${FLEX_OUTPUT_FILE_EXT})
-
-          BISON_TARGET (Parser_${CURRENT_BISON_FILE_NAME} ${CURRENT_BISON_FILE} "${FLEX_BISON_TARGET_DIR}/${BISON_OUTPUT_FILE}"
-                        COMPILE_FLAGS "-p ${CURRENT_BISON_FILE_NAME} -l -M ${CMAKE_SOURCE_DIR}/${RELATIVE_SOURCES_DIR}/=")
-          FLEX_TARGET  (Scanner_${CURRENT_FLEX_FILE_NAME} ${CURRENT_FLEX_FILE} "${FLEX_BISON_TARGET_DIR}/${FLEX_OUTPUT_FILE}"
-                        COMPILE_FLAGS "-P${CURRENT_FLEX_FILE_NAME} -L")
-          ADD_FLEX_BISON_DEPENDENCY (Scanner_${CURRENT_FLEX_FILE_NAME} Parser_${CURRENT_BISON_FILE_NAME})
-           
-          list (APPEND SOURCE_FILES ${BISON_OUTPUT_FILE} ${FLEX_OUTPUT_FILE})
-        endif()
-      endforeach()
-    endif()
-  endif()
-
-  # header files
-  if (BUILD_PATCH AND EXISTS "${BUILD_PATCH}/${RELATIVE_SOURCES_DIR}/${OCCT_PACKAGE}/FILES")
-    file (STRINGS "${BUILD_PATCH}/${RELATIVE_SOURCES_DIR}/${OCCT_PACKAGE}/FILES" HEADER_FILES_M   REGEX ".+[.]h")
-    file (STRINGS "${BUILD_PATCH}/${RELATIVE_SOURCES_DIR}/${OCCT_PACKAGE}/FILES" HEADER_FILES_LXX REGEX ".+[.]lxx")
-    file (STRINGS "${BUILD_PATCH}/${RELATIVE_SOURCES_DIR}/${OCCT_PACKAGE}/FILES" HEADER_FILES_GXX REGEX ".+[.]gxx")
-
-    file (STRINGS "${BUILD_PATCH}/${RELATIVE_SOURCES_DIR}/${OCCT_PACKAGE}/FILES" SOURCE_FILES_C REGEX ".+[.]c")
-    if(APPLE)
-      file (STRINGS "${BUILD_PATCH}/${RELATIVE_SOURCES_DIR}/${OCCT_PACKAGE}/FILES" SOURCE_FILES_M REGEX ".+[.]mm")
-    endif()
+  # TKService contains platform-dependent packages: Xw and WNT
+  if ((WIN32 AND "${OCCT_PACKAGE}" STREQUAL "Xw") OR (NOT WIN32 AND "${OCCT_PACKAGE}" STREQUAL "WNT"))
+    # do nothing
  else()
-    file (STRINGS "${CMAKE_SOURCE_DIR}/${RELATIVE_SOURCES_DIR}/${OCCT_PACKAGE}/FILES"     HEADER_FILES_M   REGEX ".+[.]h")
-    file (STRINGS "${CMAKE_SOURCE_DIR}/${RELATIVE_SOURCES_DIR}/${OCCT_PACKAGE}/FILES"     HEADER_FILES_LXX REGEX ".+[.]lxx")
-    file (STRINGS "${CMAKE_SOURCE_DIR}/${RELATIVE_SOURCES_DIR}/${OCCT_PACKAGE}/FILES"     HEADER_FILES_GXX REGEX ".+[.]gxx")

-    file (STRINGS "${CMAKE_SOURCE_DIR}/${RELATIVE_SOURCES_DIR}/${OCCT_PACKAGE}/FILES"     SOURCE_FILES_C REGEX ".+[.]c")
-    if(APPLE)
-      file (STRINGS "${CMAKE_SOURCE_DIR}/${RELATIVE_SOURCES_DIR}/${OCCT_PACKAGE}/FILES"   SOURCE_FILES_M REGEX ".+[.]mm")
+    if (WIN32)
+      list (APPEND PRECOMPILED_DEFS "-D__${OCCT_PACKAGE_NAME}_DLL")
+    endif()
+
+    set (SOURCE_FILES)
+    set (HEADER_FILES)
+
+    # Generate Flex and Bison files
+    if (${BUILD_YACCLEX})
+
+      # flex files
+      OCCT_ORIGIN_AND_PATCHED_FILES ("${RELATIVE_SOURCES_DIR}/${OCCT_PACKAGE}" "*[.]lex" SOURCE_FILES_FLEX)
+      list (LENGTH SOURCE_FILES_FLEX SOURCE_FILES_FLEX_LEN)
+
+      # bison files
+      OCCT_ORIGIN_AND_PATCHED_FILES ("${RELATIVE_SOURCES_DIR}/${OCCT_PACKAGE}" "*[.]yacc" SOURCE_FILES_BISON)
+      list (LENGTH SOURCE_FILES_BISON SOURCE_FILES_BISON_LEN)
+
+      if (${SOURCE_FILES_FLEX_LEN} EQUAL ${SOURCE_FILES_BISON_LEN} AND NOT ${SOURCE_FILES_FLEX_LEN} EQUAL 0)
+      
+        list (SORT SOURCE_FILES_FLEX)
+        list (SORT SOURCE_FILES_BISON)
+
+        math (EXPR SOURCE_FILES_FLEX_LEN "${SOURCE_FILES_FLEX_LEN} - 1")
+        foreach (FLEX_FILE_INDEX RANGE ${SOURCE_FILES_FLEX_LEN})
+
+          list (GET SOURCE_FILES_FLEX ${FLEX_FILE_INDEX} CURRENT_FLEX_FILE)
+          get_filename_component (CURRENT_FLEX_FILE_NAME ${CURRENT_FLEX_FILE} NAME_WE)
+
+          list (GET SOURCE_FILES_BISON ${FLEX_FILE_INDEX} CURRENT_BISON_FILE)
+          get_filename_component (CURRENT_BISON_FILE_NAME ${CURRENT_BISON_FILE} NAME_WE)
+          
+          string (COMPARE EQUAL ${CURRENT_FLEX_FILE_NAME} ${CURRENT_BISON_FILE_NAME} ARE_FILES_EQUAL)
+
+          if (EXISTS "${CURRENT_FLEX_FILE}" AND EXISTS "${CURRENT_BISON_FILE}" AND ${ARE_FILES_EQUAL})
+            set (BISON_OUTPUT_FILE ${CURRENT_BISON_FILE_NAME}.tab.c)
+            set (FLEX_OUTPUT_FILE lex.${CURRENT_FLEX_FILE_NAME}.c)
+            BISON_TARGET (Parser_${CURRENT_BISON_FILE_NAME} ${CURRENT_BISON_FILE} ${CMAKE_SOURCE_DIR}/${RELATIVE_SOURCES_DIR}/${OCCT_PACKAGE}/${BISON_OUTPUT_FILE} COMPILE_FLAGS "-p ${CURRENT_BISON_FILE_NAME}")
+            FLEX_TARGET  (Scanner_${CURRENT_FLEX_FILE_NAME} ${CURRENT_FLEX_FILE} ${CMAKE_SOURCE_DIR}/${RELATIVE_SOURCES_DIR}/${OCCT_PACKAGE}/${FLEX_OUTPUT_FILE} COMPILE_FLAGS "-P${CURRENT_FLEX_FILE_NAME}")
+            ADD_FLEX_BISON_DEPENDENCY (Scanner_${CURRENT_FLEX_FILE_NAME} Parser_${CURRENT_BISON_FILE_NAME})
+           
+            list (APPEND SOURCE_FILES ${BISON_OUTPUT_FILE} ${FLEX_OUTPUT_FILE})
+          endif()
+        endforeach()
+      endif()
+    endif()
+
+    # header files
+    if (BUILD_PATCH AND EXISTS "${BUILD_PATCH}/${RELATIVE_SOURCES_DIR}/${OCCT_PACKAGE}/FILES")
+      file (STRINGS "${BUILD_PATCH}/${RELATIVE_SOURCES_DIR}/${OCCT_PACKAGE}/FILES" HEADER_FILES_M   REGEX ".+[.]h")
+      file (STRINGS "${BUILD_PATCH}/${RELATIVE_SOURCES_DIR}/${OCCT_PACKAGE}/FILES" HEADER_FILES_LXX REGEX ".+[.]lxx")
+      file (STRINGS "${BUILD_PATCH}/${RELATIVE_SOURCES_DIR}/${OCCT_PACKAGE}/FILES" HEADER_FILES_GXX REGEX ".+[.]gxx")
+
+      file (STRINGS "${BUILD_PATCH}/${RELATIVE_SOURCES_DIR}/${OCCT_PACKAGE}/FILES" SOURCE_FILES_C REGEX ".+[.]c")
+      if(APPLE)
+        file (STRINGS "${BUILD_PATCH}/${RELATIVE_SOURCES_DIR}/${OCCT_PACKAGE}/FILES" SOURCE_FILES_M REGEX ".+[.]mm")
+      endif()
+    else()
+      file (STRINGS "${CMAKE_SOURCE_DIR}/${RELATIVE_SOURCES_DIR}/${OCCT_PACKAGE}/FILES"     HEADER_FILES_M   REGEX ".+[.]h")
+      file (STRINGS "${CMAKE_SOURCE_DIR}/${RELATIVE_SOURCES_DIR}/${OCCT_PACKAGE}/FILES"     HEADER_FILES_LXX REGEX ".+[.]lxx")
+      file (STRINGS "${CMAKE_SOURCE_DIR}/${RELATIVE_SOURCES_DIR}/${OCCT_PACKAGE}/FILES"     HEADER_FILES_GXX REGEX ".+[.]gxx")
+
+      file (STRINGS "${CMAKE_SOURCE_DIR}/${RELATIVE_SOURCES_DIR}/${OCCT_PACKAGE}/FILES"     SOURCE_FILES_C REGEX ".+[.]c")
+      if(APPLE)
+        file (STRINGS "${CMAKE_SOURCE_DIR}/${RELATIVE_SOURCES_DIR}/${OCCT_PACKAGE}/FILES"   SOURCE_FILES_M REGEX ".+[.]mm")
+      endif()
    endif()
-  endif()
    
-  list (APPEND HEADER_FILES ${HEADER_FILES_M} ${HEADER_FILES_LXX} ${SOURCE_FILES_GXX})
-  list (APPEND SOURCE_FILES ${SOURCE_FILES_C})
-  if(APPLE)
-    list (APPEND SOURCE_FILES ${SOURCE_FILES_M})
+    list (APPEND HEADER_FILES ${HEADER_FILES_M} ${HEADER_FILES_LXX} ${SOURCE_FILES_GXX})
+    list (APPEND SOURCE_FILES ${SOURCE_FILES_C})
+    if(APPLE)
+      list (APPEND SOURCE_FILES ${SOURCE_FILES_M})
+    endif()
+
+    foreach(HEADER_FILE ${HEADER_FILES})
+      if (BUILD_PATCH AND EXISTS "${BUILD_PATCH}/${RELATIVE_SOURCES_DIR}/${OCCT_PACKAGE}/${HEADER_FILE}")
+        message (STATUS "Info: consider patched file: ${BUILD_PATCH}/${RELATIVE_SOURCES_DIR}/${OCCT_PACKAGE}/${HEADER_FILE}")
+        list (APPEND USED_INCFILES "${BUILD_PATCH}/${RELATIVE_SOURCES_DIR}/${OCCT_PACKAGE}/${HEADER_FILE}")
+        SOURCE_GROUP ("Header Files\\${OCCT_PACKAGE_NAME}" FILES "${BUILD_PATCH}/${RELATIVE_SOURCES_DIR}/${OCCT_PACKAGE}/${HEADER_FILE}")
+      else()
+        list (APPEND USED_INCFILES "${CMAKE_SOURCE_DIR}/${RELATIVE_SOURCES_DIR}/${OCCT_PACKAGE}/${HEADER_FILE}")
+        SOURCE_GROUP ("Header Files\\${OCCT_PACKAGE_NAME}" FILES "${CMAKE_SOURCE_DIR}/${RELATIVE_SOURCES_DIR}/${OCCT_PACKAGE}/${HEADER_FILE}")
+      endif()
+    endforeach()
+
+    foreach(SOURCE_FILE ${SOURCE_FILES})
+      if (BUILD_PATCH AND EXISTS "${BUILD_PATCH}/${RELATIVE_SOURCES_DIR}/${OCCT_PACKAGE}/${SOURCE_FILE}")
+        message (STATUS "Info: consider patched file: ${BUILD_PATCH}/${RELATIVE_SOURCES_DIR}/${OCCT_PACKAGE}/${SOURCE_FILE}")
+        list (APPEND USED_SRCFILES "${BUILD_PATCH}/${RELATIVE_SOURCES_DIR}/${OCCT_PACKAGE}/${SOURCE_FILE}")
+        SOURCE_GROUP ("Source Files\\${OCCT_PACKAGE_NAME}" FILES "${BUILD_PATCH}/${RELATIVE_SOURCES_DIR}/${OCCT_PACKAGE}/${SOURCE_FILE}")
+      else()
+        list (APPEND USED_SRCFILES "${CMAKE_SOURCE_DIR}/${RELATIVE_SOURCES_DIR}/${OCCT_PACKAGE}/${SOURCE_FILE}")
+        SOURCE_GROUP ("Source Files\\${OCCT_PACKAGE_NAME}" FILES "${CMAKE_SOURCE_DIR}/${RELATIVE_SOURCES_DIR}/${OCCT_PACKAGE}/${SOURCE_FILE}")
+      endif()
+    endforeach()
+
+    if (USE_QT)
+      FIND_AND_INSTALL_QT_RESOURCES (${OCCT_PACKAGE} RESOURCE_FILES)
+      #message("Qt Resource files are: ${QT_RESOURCE_FILES} in ${OCCT_PACKAGE}")
+    endif(USE_QT)
+
+    #message("Resource files are: ${RESOURCE_FILES} in ${OCCT_PACKAGE}")
+    foreach(RESOURCE_FILE ${RESOURCE_FILES})
+      SOURCE_GROUP ("Resource Files\\${OCCT_PACKAGE_NAME}" FILES "${RESOURCE_FILE}")
+    endforeach()
  endif()
-
-  foreach(HEADER_FILE ${HEADER_FILES})
-    if (BUILD_PATCH AND EXISTS "${BUILD_PATCH}/${RELATIVE_SOURCES_DIR}/${OCCT_PACKAGE}/${HEADER_FILE}")
-      message (STATUS "Info: consider patched file: ${BUILD_PATCH}/${RELATIVE_SOURCES_DIR}/${OCCT_PACKAGE}/${HEADER_FILE}")
-      list (APPEND USED_INCFILES "${BUILD_PATCH}/${RELATIVE_SOURCES_DIR}/${OCCT_PACKAGE}/${HEADER_FILE}")
-      SOURCE_GROUP ("Header Files\\${OCCT_PACKAGE_NAME}" FILES "${BUILD_PATCH}/${RELATIVE_SOURCES_DIR}/${OCCT_PACKAGE}/${HEADER_FILE}")
-    else()
-      list (APPEND USED_INCFILES "${CMAKE_SOURCE_DIR}/${RELATIVE_SOURCES_DIR}/${OCCT_PACKAGE}/${HEADER_FILE}")
-      SOURCE_GROUP ("Header Files\\${OCCT_PACKAGE_NAME}" FILES "${CMAKE_SOURCE_DIR}/${RELATIVE_SOURCES_DIR}/${OCCT_PACKAGE}/${HEADER_FILE}")
-    endif()
-  endforeach()
-
-  foreach(SOURCE_FILE ${SOURCE_FILES})
-    if (BUILD_PATCH AND EXISTS "${BUILD_PATCH}/${RELATIVE_SOURCES_DIR}/${OCCT_PACKAGE}/${SOURCE_FILE}")
-      message (STATUS "Info: consider patched file: ${BUILD_PATCH}/${RELATIVE_SOURCES_DIR}/${OCCT_PACKAGE}/${SOURCE_FILE}")
-      list (APPEND USED_SRCFILES "${BUILD_PATCH}/${RELATIVE_SOURCES_DIR}/${OCCT_PACKAGE}/${SOURCE_FILE}")
-      SOURCE_GROUP ("Source Files\\${OCCT_PACKAGE_NAME}" FILES "${BUILD_PATCH}/${RELATIVE_SOURCES_DIR}/${OCCT_PACKAGE}/${SOURCE_FILE}")
-    else()
-      list (APPEND USED_SRCFILES "${CMAKE_SOURCE_DIR}/${RELATIVE_SOURCES_DIR}/${OCCT_PACKAGE}/${SOURCE_FILE}")
-      SOURCE_GROUP ("Source Files\\${OCCT_PACKAGE_NAME}" FILES "${CMAKE_SOURCE_DIR}/${RELATIVE_SOURCES_DIR}/${OCCT_PACKAGE}/${SOURCE_FILE}")
-    endif()
-  endforeach()
-
-  if (USE_QT)
-    FIND_AND_INSTALL_QT_RESOURCES (${OCCT_PACKAGE} RESOURCE_FILES)
-    #message("Qt Resource files are: ${QT_RESOURCE_FILES} in ${OCCT_PACKAGE}")
-  endif(USE_QT)
-
-  #message("Resource files are: ${RESOURCE_FILES} in ${OCCT_PACKAGE}")
-  foreach(RESOURCE_FILE ${RESOURCE_FILES})
-    SOURCE_GROUP ("Resource Files\\${OCCT_PACKAGE_NAME}" FILES "${RESOURCE_FILE}")
-  endforeach()
 endforeach()
 string (REGEX REPLACE ";" " " PRECOMPILED_DEFS "${PRECOMPILED_DEFS}")

@@ -353,7 +330,7 @@ endif()

 # Update list of used VTK libraries if OpenGL2 Rendering BackEnd is used.
 # Add VTK_OPENGL2_BACKEND definition.
-if("${VTK_RENDERING_BACKEND}" STREQUAL "OpenGL2" OR IS_VTK_9XX)
+if("${VTK_RENDERING_BACKEND}" STREQUAL "OpenGL2")
  add_definitions(-DVTK_OPENGL2_BACKEND)
  foreach (VTK_EXCLUDE_LIBRARY vtkRenderingOpenGL vtkRenderingFreeTypeOpenGL)
    list (FIND USED_TOOLKITS_BY_CURRENT_PROJECT "${VTK_EXCLUDE_LIBRARY}" IS_VTK_OPENGL_FOUND)
@@ -377,9 +354,6 @@ else()
 endif()

 if (BUILD_SHARED_LIBS)
-  if(IS_VTK_9XX)
-    string (REGEX REPLACE "vtk" "VTK::" USED_TOOLKITS_BY_CURRENT_PROJECT "${USED_TOOLKITS_BY_CURRENT_PROJECT}")
-  endif()
  target_link_libraries (${PROJECT_NAME} ${USED_TOOLKITS_BY_CURRENT_PROJECT} ${USED_EXTERNAL_LIBS_BY_CURRENT_PROJECT})
 endif()

--- a/adm/cmake/openvr.cmake
+++ b/adm/cmake/openvr.cmake
@@ -1,5 +0,0 @@
-# OpenVR SDK
-# OpenVR is an API and runtime that allows access to VR hardware from multiple vendors without requiring that applications have specific knowledge of the hardware they are targeting.
-# https://github.com/ValveSoftware/openvr
-
-THIRDPARTY_PRODUCT("OPENVR" "openvr.h" "CSF_OpenVR" "")
--- a/adm/cmake/qt.cmake
+++ b/adm/cmake/qt.cmake
@@ -7,8 +7,7 @@ if (NOT DEFINED ${3RDPARTY_QT_DIR} AND ${3RDPARTY_QT_DIR} STREQUAL "")
  FIND_PRODUCT_DIR ("${3RDPARTY_DIR}" Qt 3RDPARTY_QT_DIR_NAME)

  if (NOT DEFINED ${3RDPARTY_QT_DIR_NAME} AND ${3RDPARTY_QT_DIR_NAME} STREQUAL "")
-    set (3RDPARTY_QT_DIR "" CACHE PATH "The directory containing qt")
-    message (FATAL_ERROR "Could not find used third-party product: 3RDPARTY_QT_DIR")
+    message (FATAL_ERROR "... Qt root directory was not found")
  endif()

  # Combine directory name with absolute path and show in GUI
@@ -32,10 +31,4 @@ if (NOT ${Qt5_FOUND})
  #message (STATUS "Qt4 cmake configuration")
 else()
  #message (STATUS "Qt5 cmake configuration")
-endif()
-
-if (3RDPARTY_QT_DIR OR EXISTS "${3RDPARTY_QT_DIR}")
-  list (APPEND 3RDPARTY_DLL_DIRS "${3RDPARTY_QT_DIR}/bin")
-else()
-  list (APPEND 3RDPARTY_NO_DLLS 3RDPARTY_QT_DLL_DIR)
-endif()
+endif()
--- a/adm/cmake/vardescr.cmake
+++ b/adm/cmake/vardescr.cmake
@@ -89,7 +89,6 @@ INSTALL_MESSAGE (INSTALL_TEST_CASES       "non-regression OCCT test scripts")
 INSTALL_MESSAGE (INSTALL_DOC_Overview     "OCCT overview documentation (HTML format)")
 INSTALL_MESSAGE (INSTALL_FFMPEG           "FFmpeg binaries")
 INSTALL_MESSAGE (INSTALL_FREEIMAGE        "FreeImage binaries")
-INSTALL_MESSAGE (INSTALL_OPENVR           "OpenVR binaries")
 INSTALL_MESSAGE (INSTALL_EIGEN            "EIGEN header files")
 INSTALL_MESSAGE (INSTALL_EGL              "EGL binaries")
 INSTALL_MESSAGE (INSTALL_GLES2            "OpenGL ES 2.0 binaries")
@@ -163,9 +162,6 @@ set (USE_FREEIMAGE_DESCR
 "Indicates whether Freeimage product should be used in OCCT visualization
 module for support of popular graphics image formats (PNG, BMP etc)")

-set (USE_OPENVR_DESCR
-"Indicates whether OpenVR should be used in OCCT visualization module for VR support")
-
 set (USE_RAPIDJSON_DESCR
 "Indicates whether RapidJSON product should be used in OCCT DataExchange
 module for support of JSON-based formats like glTF")
--- a/adm/cmake/vtk.cmake
+++ b/adm/cmake/vtk.cmake
@@ -66,15 +66,10 @@ if (3RDPARTY_VTK_DIR AND EXISTS "${3RDPARTY_VTK_DIR}")
  set (ENV{VTK_DIR} ${CACHED_VTK_DIR})
 endif()

-unset (IS_VTK_9XX)
 if (VTK_FOUND)
-  message ("VTK version (${VTK_VERSION})")
-  if(VTK_MAJOR_VERSION EQUAL 8 AND VTK_MINOR_VERSION GREATER 9 OR VTK_MAJOR_VERSION GREATER 8)
-    set (IS_VTK_9XX 1)
-  else()
-    # add compiler flags, preprocessor definitions, include and link dirs
-    include (${VTK_USE_FILE})
-  endif()
+
+  # add compiler flags, preprocessor definitions, include and link dirs
+  include (${VTK_USE_FILE})

  if (VTK_LIBRARIES)

@@ -86,83 +81,79 @@ if (VTK_FOUND)
 #    endif()

    foreach (VTK_LIBRARY ${VTK_LIBRARIES})
-      if (IS_VTK_9XX)
-        string (REGEX MATCH "^VTK::" IS_VTK_LIBRARY ${VTK_LIBRARY})
-      else()
-        string (REGEX MATCH "^vtk" IS_VTK_LIBRARY ${VTK_LIBRARY})
-      endif()
-      if (NOT IS_VTK_LIBRARY OR NOT TARGET ${VTK_LIBRARY})
-        continue()
-      endif()
-
-      # get paths from corresponding variables
-      if (${VTK_LIBRARY}_INCLUDE_DIRS AND EXISTS "${${VTK_LIBRARY}_INCLUDE_DIRS}")
-        list (APPEND 3RDPARTY_VTK_INCLUDE_DIRS "${${VTK_LIBRARY}_INCLUDE_DIRS}")
-      endif()
-
-      if (${VTK_LIBRARY}_LIBRARY_DIRS AND EXISTS "${${VTK_LIBRARY}_LIBRARY_DIRS}")
-        list (APPEND 3RDPARTY_VTK_LIBRARY_DIRS "${${VTK_LIBRARY}_LIBRARY_DIRS}")
-      endif()
-
-      if (${VTK_LIBRARY}_RUNTIME_LIBRARY_DIRS AND EXISTS "${${VTK_LIBRARY}_RUNTIME_LIBRARY_DIRS}")
-        list (APPEND 3RDPARTY_VTK_DLL_DIRS "${${VTK_LIBRARY}_RUNTIME_LIBRARY_DIRS}")
-        if (NOT WIN32)
-          list (APPEND 3RDPARTY_VTK_LIBRARY_DIRS "${${VTK_LIBRARY}_RUNTIME_LIBRARY_DIRS}")
+      string (REGEX MATCH "^vtk" IS_VTK_LIBRARY ${VTK_LIBRARY})
+      if (IS_VTK_LIBRARY AND TARGET ${VTK_LIBRARY})
+        # get paths from corresponding variables
+        if (${VTK_LIBRARY}_INCLUDE_DIRS AND EXISTS "${${VTK_LIBRARY}_INCLUDE_DIRS}")
+          list (APPEND 3RDPARTY_VTK_INCLUDE_DIRS "${${VTK_LIBRARY}_INCLUDE_DIRS}")
        endif()
-      endif()

-      # get paths from corresponding properties
-      get_target_property (TARGET_VTK_IMPORT_CONFS ${VTK_LIBRARY} IMPORTED_CONFIGURATIONS)
-      if (TARGET_VTK_IMPORT_CONFS)
-        list (GET TARGET_VTK_IMPORT_CONFS 0 CHOSEN_IMPORT_CONF)
-
-        # todo: choose configuration in connection with the build type
-        #if (CMAKE_BUILD_TYPE)
-        #  foreach (IMPORT_CONF ${TARGET_VTK_IMPORT_CONFS})
-        #  endforeach()
-        #endif()
-
-        # Work-around against link failure in case if VTK contains dependency
-        # on DirectX: its run-time is always present on Windows, but SDK can
-        # be absent on current workstation, while not actually needed for
-        # OCCT linking.
-        # VTK 6.1 for VC 10
-        get_target_property (TARGET_PROPERTY_IMP_LINK_INTERFACE_LIBRARIES ${VTK_LIBRARY} IMPORTED_LINK_INTERFACE_LIBRARIES_${CHOSEN_IMPORT_CONF})
-        if(TARGET_PROPERTY_IMP_LINK_INTERFACE_LIBRARIES)
-          string (REGEX MATCH "[^;]*d3d[0-9]+[.]lib" HARDCODED_D3D9_LIB "${TARGET_PROPERTY_IMP_LINK_INTERFACE_LIBRARIES}")
-          if (HARDCODED_D3D9_LIB)
-            message (STATUS "Warning: ${HARDCODED_D3D9_LIB} has been removed from imported dependencies of ${VTK_LIBRARY}")
-
-            list (REMOVE_ITEM TARGET_PROPERTY_IMP_LINK_INTERFACE_LIBRARIES ${HARDCODED_D3D9_LIB})
-            set_target_properties (${VTK_LIBRARY} PROPERTIES IMPORTED_LINK_INTERFACE_LIBRARIES_${CHOSEN_IMPORT_CONF} "${TARGET_PROPERTY_IMP_LINK_INTERFACE_LIBRARIES}")
+          if (${VTK_LIBRARY}_LIBRARY_DIRS AND EXISTS "${${VTK_LIBRARY}_LIBRARY_DIRS}")
+            list (APPEND 3RDPARTY_VTK_LIBRARY_DIRS "${${VTK_LIBRARY}_LIBRARY_DIRS}")
          endif()
-        endif()
-        # VTK 6.1 for VC 12, 14
-        get_target_property (TARGET_PROPERTY_IMP_LINK_INTERFACE_LIBRARIES ${VTK_LIBRARY} INTERFACE_LINK_LIBRARIES)
-        if(TARGET_PROPERTY_IMP_LINK_INTERFACE_LIBRARIES)
-          string (REGEX MATCH "[^;]*d3d[0-9]+[.]lib" HARDCODED_D3D9_LIB "${TARGET_PROPERTY_IMP_LINK_INTERFACE_LIBRARIES}")
-          if (HARDCODED_D3D9_LIB)
-            message (STATUS "Warning: ${HARDCODED_D3D9_LIB} has been removed from imported dependencies of ${VTK_LIBRARY}")

-            list (REMOVE_ITEM TARGET_PROPERTY_IMP_LINK_INTERFACE_LIBRARIES ${HARDCODED_D3D9_LIB})
-            set_target_properties (${VTK_LIBRARY} PROPERTIES INTERFACE_LINK_LIBRARIES "${TARGET_PROPERTY_IMP_LINK_INTERFACE_LIBRARIES}")
+          if (${VTK_LIBRARY}_RUNTIME_LIBRARY_DIRS AND EXISTS "${${VTK_LIBRARY}_RUNTIME_LIBRARY_DIRS}")
+            list (APPEND 3RDPARTY_VTK_DLL_DIRS "${${VTK_LIBRARY}_RUNTIME_LIBRARY_DIRS}")
+            if (NOT WIN32)
+              list (APPEND 3RDPARTY_VTK_LIBRARY_DIRS "${${VTK_LIBRARY}_RUNTIME_LIBRARY_DIRS}")
+            endif()
          endif()
-        endif()

-        get_target_property (TARGET_PROPERTY_IMP_PATH ${VTK_LIBRARY} IMPORTED_IMPLIB_${CHOSEN_IMPORT_CONF})
-        if(TARGET_PROPERTY_IMP_PATH AND EXISTS "${TARGET_PROPERTY_IMP_PATH}")
-          get_filename_component (TARGET_PROPERTY_IMP_DIR "${TARGET_PROPERTY_IMP_PATH}" PATH)
-          list (APPEND 3RDPARTY_VTK_LIBRARY_DIRS "${TARGET_PROPERTY_IMP_DIR}")
-        endif()
+          # get paths from corresponding properties
+          get_target_property (TARGET_VTK_IMPORT_CONFS ${VTK_LIBRARY} IMPORTED_CONFIGURATIONS)

-        get_target_property (TARGET_PROPERTY_LOCATION_PATH ${VTK_LIBRARY} IMPORTED_LOCATION_${CHOSEN_IMPORT_CONF})
-        if(TARGET_PROPERTY_LOCATION_PATH AND EXISTS "${TARGET_PROPERTY_LOCATION_PATH}")
-          get_filename_component (TARGET_PROPERTY_LOCATION_DIR "${TARGET_PROPERTY_LOCATION_PATH}" PATH)
+          if (TARGET_VTK_IMPORT_CONFS)
+            list (GET TARGET_VTK_IMPORT_CONFS 0 CHOSEN_IMPORT_CONF)

-          if (WIN32)
-            list (APPEND 3RDPARTY_VTK_DLL_DIRS "${TARGET_PROPERTY_LOCATION_DIR}")
-          else()
-            list (APPEND 3RDPARTY_VTK_LIBRARY_DIRS "${TARGET_PROPERTY_LOCATION_DIR}")
+            # todo: choose configuration in connection with the build type
+            #if (CMAKE_BUILD_TYPE)
+            #  foreach (IMPORT_CONF ${TARGET_VTK_IMPORT_CONFS})
+            #  endforeach()
+            #endif()
+
+            # Work-around against link failure in case if VTK contains dependency
+            # on DirectX: its run-time is always present on Windows, but SDK can
+            # be absent on current workstation, while not actually needed for 
+            # OCCT linking.
+            # VTK 6.1 for VC 10
+            get_target_property (TARGET_PROPERTY_IMP_LINK_INTERFACE_LIBRARIES ${VTK_LIBRARY} IMPORTED_LINK_INTERFACE_LIBRARIES_${CHOSEN_IMPORT_CONF})
+            if(TARGET_PROPERTY_IMP_LINK_INTERFACE_LIBRARIES)
+              string (REGEX MATCH "[^;]*d3d[0-9]+[.]lib" HARDCODED_D3D9_LIB "${TARGET_PROPERTY_IMP_LINK_INTERFACE_LIBRARIES}")
+              if (HARDCODED_D3D9_LIB)
+                message (STATUS "Warning: ${HARDCODED_D3D9_LIB} has been removed from imported dependencies of ${VTK_LIBRARY}")
+
+                list (REMOVE_ITEM TARGET_PROPERTY_IMP_LINK_INTERFACE_LIBRARIES ${HARDCODED_D3D9_LIB})
+                set_target_properties (${VTK_LIBRARY} PROPERTIES IMPORTED_LINK_INTERFACE_LIBRARIES_${CHOSEN_IMPORT_CONF} "${TARGET_PROPERTY_IMP_LINK_INTERFACE_LIBRARIES}")
+              endif()
+            endif()
+            # VTK 6.1 for VC 12, 14
+            get_target_property (TARGET_PROPERTY_IMP_LINK_INTERFACE_LIBRARIES ${VTK_LIBRARY} INTERFACE_LINK_LIBRARIES)
+            if(TARGET_PROPERTY_IMP_LINK_INTERFACE_LIBRARIES)
+              string (REGEX MATCH "[^;]*d3d[0-9]+[.]lib" HARDCODED_D3D9_LIB "${TARGET_PROPERTY_IMP_LINK_INTERFACE_LIBRARIES}")
+              if (HARDCODED_D3D9_LIB)
+                message (STATUS "Warning: ${HARDCODED_D3D9_LIB} has been removed from imported dependencies of ${VTK_LIBRARY}")
+
+                list (REMOVE_ITEM TARGET_PROPERTY_IMP_LINK_INTERFACE_LIBRARIES ${HARDCODED_D3D9_LIB})
+                set_target_properties (${VTK_LIBRARY} PROPERTIES INTERFACE_LINK_LIBRARIES "${TARGET_PROPERTY_IMP_LINK_INTERFACE_LIBRARIES}")
+              endif()
+            endif()
+
+            get_target_property (TARGET_PROPERTY_IMP_PATH ${VTK_LIBRARY} IMPORTED_IMPLIB_${CHOSEN_IMPORT_CONF})
+            if(TARGET_PROPERTY_IMP_PATH AND EXISTS "${TARGET_PROPERTY_IMP_PATH}")
+              get_filename_component (TARGET_PROPERTY_IMP_DIR "${TARGET_PROPERTY_IMP_PATH}" PATH)
+              list (APPEND 3RDPARTY_VTK_LIBRARY_DIRS "${TARGET_PROPERTY_IMP_DIR}")
+            endif()
+
+            get_target_property (TARGET_PROPERTY_LOCATION_PATH ${VTK_LIBRARY} IMPORTED_LOCATION_${CHOSEN_IMPORT_CONF})
+            if(TARGET_PROPERTY_LOCATION_PATH AND EXISTS "${TARGET_PROPERTY_LOCATION_PATH}")
+              get_filename_component (TARGET_PROPERTY_LOCATION_DIR "${TARGET_PROPERTY_LOCATION_PATH}" PATH)
+
+              if (WIN32)
+                list (APPEND 3RDPARTY_VTK_DLL_DIRS "${TARGET_PROPERTY_LOCATION_DIR}")
+              else()
+                list (APPEND 3RDPARTY_VTK_LIBRARY_DIRS "${TARGET_PROPERTY_LOCATION_DIR}")
+              endif()
+            endif()
          endif()
        endif()
      endif()
@@ -196,7 +187,6 @@ if (VTK_FOUND)
      endif()
    endif()
 #  endif()
-endif()

 if (3RDPARTY_VTK_INCLUDE_DIR AND EXISTS "${3RDPARTY_VTK_INCLUDE_DIR}")
  list (APPEND 3RDPARTY_INCLUDE_DIRS ${3RDPARTY_VTK_INCLUDE_DIR})
--- a/adm/genconf.tcl
+++ b/adm/genconf.tcl
@@ -82,11 +82,6 @@ if { ! [catch {exec vswhere.exe -version "\[16.0,16.99\]" -latest -requires Micr
  lappend ::SYS_VC_LIST "vc142-uwp"
  lappend ::SYS_VCVARS_LIST "$res\\VC\\vcvarsall.bat"
 }
-if { ! [catch {exec vswhere.exe -version "\[16.0,16.99\]" -latest -requires Microsoft.VisualStudio.Component.VC.ClangCL -property installationPath} res] } {
-  lappend ::SYS_VS_LIST "Visual Studio 2019 (16, toolset ClangCL)"
-  lappend ::SYS_VC_LIST "vclang"
-  lappend ::SYS_VCVARS_LIST "$res\\VC\\vcvarsall.bat"
-}

 # detect installed Visual Studio instances from global environment
 if { [info exists ::env(VS140COMNTOOLS)] } {
@@ -187,9 +182,6 @@ proc wokdep:gui:UpdateList {} {
  if { "$::HAVE_FFMPEG" == "true" } {
    wokdep:SearchFFmpeg  anIncErrs anLib32Errs anLib64Errs anBin32Errs anBin64Errs
  }
-  if { "$::HAVE_OPENVR" == "true" } {
-    wokdep:SearchOpenVR  anIncErrs anLib32Errs anLib64Errs anBin32Errs anBin64Errs
-  }
  if { "$::HAVE_TBB" == "true" } {
    wokdep:SearchTBB     anIncErrs anLib32Errs anLib64Errs anBin32Errs anBin64Errs
  }
@@ -201,11 +193,7 @@ proc wokdep:gui:UpdateList {} {
  }

  if { "$::HAVE_ZLIB" == "true" } {
-    set aCheckLib "z"
-    if { "$::tcl_platform(platform)" == "windows" } {
-      set aCheckLib "zlib"
-    }
-    wokdep:SearchStandardLibrary  anIncErrs anLib32Errs anLib64Errs anBin32Errs anBin64Errs "zlib" "zlib.h" "$aCheckLib" {"zlib"}
+    wokdep:SearchStandardLibrary  anIncErrs anLib32Errs anLib64Errs anBin32Errs anBin64Errs "zlib" "zlib.h" "zlib" {"zlib"}
  }
  if { "$::HAVE_LIBLZMA" == "true" } {
    set aCheckLib "lzma"
@@ -226,14 +214,9 @@ proc wokdep:gui:UpdateList {} {
    wokdep:SearchRapidJson anIncErrs anLib32Errs anLib64Errs anBin32Errs anBin64Errs
  }

-  if {"$::BUILD_Inspector" == "true" } {
-    set ::CHECK_QT "true"
+  if { "$::CHECK_QT4" == "true" } {
+    wokdep:SearchQt4     anIncErrs anLib32Errs anLib64Errs anBin32Errs anBin64Errs
  }
-
-  if { "$::CHECK_QT" == "true" } {
-    wokdep:SearchQt     anIncErrs anLib32Errs anLib64Errs anBin32Errs anBin64Errs
-  }
-
  if { "$::CHECK_JDK" == "true" } {
    wokdep:SearchJDK     anIncErrs anLib32Errs anLib64Errs anBin32Errs anBin64Errs
  }
@@ -475,8 +458,6 @@ checkbutton   .myFrame.myChecks.myFImageCheck   -offvalue "false" -onvalue "true
 ttk::label    .myFrame.myChecks.myFImageLbl     -text "Use FreeImage"
 checkbutton   .myFrame.myChecks.myTbbCheck      -offvalue "false" -onvalue "true" -variable HAVE_TBB       -command wokdep:gui:UpdateList
 ttk::label    .myFrame.myChecks.myTbbLbl        -text "Use Intel TBB"
-checkbutton   .myFrame.myChecks.myOpenVrCheck   -offvalue "false" -onvalue "true" -variable HAVE_OPENVR    -command wokdep:gui:UpdateList
-ttk::label    .myFrame.myChecks.myOpenVrLbl     -text "Use OpenVR"
 if { "$::tcl_platform(os)" != "Darwin" } {
  checkbutton .myFrame.myChecks.myGlesCheck     -offvalue "false" -onvalue "true" -variable HAVE_GLES2     -command wokdep:gui:UpdateList
  ttk::label  .myFrame.myChecks.myGlesLbl       -text "Use OpenGL ES"
@@ -504,16 +485,11 @@ ttk::label    .myFrame.myChecks.myLzmaLbl       -text "Use liblzma"
 checkbutton   .myFrame.myChecks.myE57Check      -offvalue "false" -onvalue "true" -variable HAVE_E57       -command wokdep:gui:UpdateList
 ttk::label    .myFrame.myChecks.myE57Lbl        -text "Use E57"

-checkbutton   .myFrame.myChecks.myQtCheck       -offvalue "false" -onvalue "true" -variable CHECK_QT       -command wokdep:gui:UpdateList
-ttk::label    .myFrame.myChecks.myQtLbl         -text "Search Qt"
+checkbutton   .myFrame.myChecks.myQt4Check      -offvalue "false" -onvalue "true" -variable CHECK_QT4      -command wokdep:gui:UpdateList
+ttk::label    .myFrame.myChecks.myQt4Lbl        -text "Search Qt4"
 checkbutton   .myFrame.myChecks.myJDKCheck      -offvalue "false" -onvalue "true" -variable CHECK_JDK      -command wokdep:gui:UpdateList
 ttk::label    .myFrame.myChecks.myJDKLbl        -text "Search JDK"

-if { "$::tcl_platform(platform)" == "windows" } {
-  checkbutton   .myFrame.myChecks.myInspectorBuild -offvalue "false" -onvalue "true" -variable BUILD_Inspector      -command wokdep:gui:UpdateList
-  ttk::label    .myFrame.myChecks.myInspectorLbl   -text "Build Inspector"
-}
-
 # Additional headers search paths
 ttk::label    .myFrame.myIncLbl    -text "Additional headers search paths:" -padding {5 5 80 5}
 scrollbar     .myFrame.myIncScrl   -command ".myFrame.myIncList yview"
@@ -617,8 +593,8 @@ if { "$::tcl_platform(os)" != "Darwin" } {
 grid .myFrame.myChecks.myZLibCheck     -row $aCheckRowIter -column 6 -sticky e
 grid .myFrame.myChecks.myZLibLbl       -row $aCheckRowIter -column 7 -sticky w

-grid .myFrame.myChecks.myQtCheck      -row $aCheckRowIter -column 12 -sticky e
-grid .myFrame.myChecks.myQtLbl        -row $aCheckRowIter -column 13 -sticky w
+grid .myFrame.myChecks.myQt4Check      -row $aCheckRowIter -column 12 -sticky e
+grid .myFrame.myChecks.myQt4Lbl        -row $aCheckRowIter -column 13 -sticky w

 incr aCheckRowIter
 grid .myFrame.myChecks.myFFmpegCheck   -row $aCheckRowIter -column 0 -sticky e
@@ -640,16 +616,9 @@ grid .myFrame.myChecks.myJDKLbl        -row $aCheckRowIter -column 13 -sticky w
 incr aCheckRowIter
 grid .myFrame.myChecks.myRapidJsonCheck -row $aCheckRowIter -column 0 -sticky e
 grid .myFrame.myChecks.myRapidJsonLbl   -row $aCheckRowIter -column 1 -sticky w
-grid .myFrame.myChecks.myOpenVrCheck   -row $aCheckRowIter -column 4 -sticky e
-grid .myFrame.myChecks.myOpenVrLbl     -row $aCheckRowIter -column 5 -sticky w
 grid .myFrame.myChecks.myE57Check      -row $aCheckRowIter -column 6 -sticky e
 grid .myFrame.myChecks.myE57Lbl        -row $aCheckRowIter -column 7 -sticky w

-if { "$::tcl_platform(platform)" == "windows" } {
-  grid .myFrame.myChecks.myInspectorBuild      -row $aCheckRowIter -column 12 -sticky e
-  grid .myFrame.myChecks.myInspectorLbl        -row $aCheckRowIter -column 13 -sticky w
-}
-
 incr aCheckRowIter

 # Additional headers search paths
--- a/adm/genconfdeps.tcl
+++ b/adm/genconfdeps.tcl
@@ -68,7 +68,7 @@ if { [info exists ::env(SHORTCUT_HEADERS)] } {
 }

 # fetch environment variables (e.g. set by custom.sh or custom.bat) and set them as tcl variables with the same name
-set THE_ENV_VARIABLES {HAVE_FREEIMAGE HAVE_FFMPEG HAVE_TBB HAVE_GLES2 HAVE_D3D HAVE_VTK HAVE_ZLIB HAVE_LIBLZMA HAVE_E57 HAVE_RAPIDJSON HAVE_OPENVR HAVE_OPENCL CHECK_QT4 CHECK_JDK MACOSX_USE_GLX HAVE_RelWithDebInfo BUILD_Inspector}
+set THE_ENV_VARIABLES {HAVE_FREEIMAGE HAVE_FFMPEG HAVE_TBB HAVE_GLES2 HAVE_D3D HAVE_VTK HAVE_ZLIB HAVE_LIBLZMA HAVE_E57 HAVE_RAPIDJSON HAVE_OPENCL CHECK_QT4 CHECK_JDK MACOSX_USE_GLX HAVE_RelWithDebInfo}
 foreach anEnvIter $THE_ENV_VARIABLES {
  set ${anEnvIter} "false"
  if { [info exists ::env(${anEnvIter})] } {
@@ -241,11 +241,7 @@ proc wokdep:Preferred {theList theCmpl theArch} {

  # keep only two first digits in "vc141"
  if { ! [regexp {^vc[0-9][0-9]} $theCmpl aCmpl] } {
-    if { [regexp {^vclang} $theCmpl] } { 
-      set aCmpl vc14
-    } else {
-      set aCmpl $theCmpl
-    }
+    set aCmpl $theCmpl
  }

  set aShortList {}
@@ -625,59 +621,6 @@ proc wokdep:SearchFFmpeg {theErrInc theErrLib32 theErrLib64 theErrBin32 theErrBi
  return "$isFound"
 }

-# Search OpenVR SDK placement
-proc wokdep:SearchOpenVR {theErrInc theErrLib32 theErrLib64 theErrBin32 theErrBin64} {
-  upvar $theErrInc   anErrInc
-  upvar $theErrLib32 anErrLib32
-  upvar $theErrLib64 anErrLib64
-  upvar $theErrBin32 anErrBin32
-  upvar $theErrBin64 anErrBin64
-
-  set isFound "true"
-  set anOpenVrHPath [wokdep:SearchHeader "openvr.h"]
-  if { "$anOpenVrHPath"  == "" } {
-    set aPath [wokdep:Preferred [glob -nocomplain -directory "$::PRODUCTS_PATH" -type d *{openvr}*] "$::VCVER" "$::ARCH" ]
-    if { "$aPath" != "" && [file exists "$aPath/include/openvr.h"] } {
-      lappend ::CSF_OPT_INC "$aPath/include"
-    } elseif { "$aPath" != "" && [file exists "$aPath/headers/openvr.h"] } {
-      lappend ::CSF_OPT_INC "$aPath/headers"
-    } else {
-      lappend anErrInc "Error: 'openvr.h' not found (OpenVR)"
-      set isFound "false"
-    }
-  }
-
-  set aPlatform "unknown"
-  if { "$::tcl_platform(platform)" == "windows" } {
-    set aPlatform "win"
-  } elseif { "$::tcl_platform(os)" == "Darwin" } {
-    set aPlatform "osx"
-  } elseif { "$::tcl_platform(os)" == "Linux" } {
-    set aPlatform "linux"
-  }
-
-  foreach anArchIter {64 32} {
-    set anOpenVrLibPath [wokdep:SearchLib "openvr_api" "$anArchIter"]
-    if { "$anOpenVrLibPath" == "" } {
-      set aPath [wokdep:Preferred [glob -nocomplain -directory "$::PRODUCTS_PATH" -type d *{openvr}*] "$::VCVER" "$anArchIter" ]
-      set anOpenVrLibPath  [wokdep:SearchLib "openvr_api" "$anArchIter" "$aPath/lib/${aPlatform}${anArchIter}"]
-      set anOpenVrLibPath2 [wokdep:SearchLib "openvr_api" "$anArchIter" "$aPath/lib"]
-      if { "$anOpenVrLibPath" != "" } {
-        lappend ::CSF_OPT_LIB$anArchIter "$aPath/lib/${aPlatform}${anArchIter}"
-        lappend ::CSF_OPT_BIN$anArchIter "$aPath/bin/${aPlatform}${anArchIter}"
-      } elseif { "$anOpenVrLibPath2" != "" } {
-        lappend ::CSF_OPT_LIB$anArchIter "$aPath/lib"
-        lappend ::CSF_OPT_BIN$anArchIter "$aPath/bin"
-      } else {
-        lappend anErrLib$anArchIter "Error: '${::SYS_LIB_PREFIX}openvr_api.${::SYS_LIB_SUFFIX}' not found (OpenVR)"
-        if { "$::ARCH" == "$anArchIter"} { set isFound "false" }
-      }
-    }
-  }
-
-  return "$isFound"
-}
-
 # Search TBB library placement
 proc wokdep:SearchTBB {theErrInc theErrLib32 theErrLib64 theErrBin32 theErrBin64} {
  upvar $theErrInc   anErrInc
@@ -688,11 +631,7 @@ proc wokdep:SearchTBB {theErrInc theErrLib32 theErrLib64 theErrBin32 theErrBin64

  # keep only two first digits in "vc141"
  if { ! [regexp {^vc[0-9][0-9]} ${::VCVER} aVcLib] } {
-    if { [regexp {^vclang} ${::VCVER}] } {
-      set aVcLib vc14
-    } else {
-      set aVcLib ${::VCVER}
-    }
+    set aVcLib ${::VCVER}
  }

  set isFound "true"
@@ -1075,8 +1014,8 @@ proc wokdep:SearchVTK {theErrInc theErrLib32 theErrLib64 theErrBin32 theErrBin64
  return "$isFound"
 }

-# Search Qt libraries placement
-proc wokdep:SearchQt {theErrInc theErrLib32 theErrLib64 theErrBin32 theErrBin64} {
+# Search Qt4 libraries placement
+proc wokdep:SearchQt4 {theErrInc theErrLib32 theErrLib64 theErrBin32 theErrBin64} {
  upvar $theErrInc   anErrInc
  upvar $theErrLib32 anErrLib32
  upvar $theErrLib64 anErrLib64
@@ -1084,46 +1023,53 @@ proc wokdep:SearchQt {theErrInc theErrLib32 theErrLib64 theErrBin32 theErrBin64}
  upvar $theErrBin64 anErrBin64

  set isFound "true"
-  set aPath [wokdep:Preferred [glob -nocomplain -directory "$::PRODUCTS_PATH" -type d *{qt}*] "$::VCVER" "$::ARCH" ] 
-  set aQMsgBoxHPath [wokdep:SearchHeader "QtGui/qguiapplication.h"]
+  set aQMsgBoxHPath [wokdep:SearchHeader "QtGui/qmessagebox.h"]
  if { "$aQMsgBoxHPath" == "" } {
-    if { "$aPath" != "" && [file exists "$aPath/include/QtGui/qguiapplication.h"] } {
+    set aPath [wokdep:Preferred [glob -nocomplain -directory "$::PRODUCTS_PATH" -type d *{qt4}*] "$::VCVER" "$::ARCH" ]
+    if { "$aPath" != "" && [file exists "$aPath/include/QtGui/qmessagebox.h"] } {
      lappend ::CSF_OPT_INC "$aPath/include"
      lappend ::CSF_OPT_INC "$aPath/include/Qt"
      lappend ::CSF_OPT_INC "$aPath/include/QtGui"
      lappend ::CSF_OPT_INC "$aPath/include/QtCore"
-      lappend ::CSF_OPT_INC "$aPath/include/QtWidgets"
-      lappend ::CSF_OPT_INC "$aPath/include/QtXml"
    } else {
-      lappend anErrInc "Error: 'QtGui/qguiapplication.h' not found"
+      if { [file exists "/usr/include/qt4/QtGui/qmessagebox.h"] } {
+        lappend ::CSF_OPT_INC "/usr/include/qt4"
+        lappend ::CSF_OPT_INC "/usr/include/qt4/Qt"
+        lappend ::CSF_OPT_INC "/usr/include/qt4/QtGui"
+        lappend ::CSF_OPT_INC "/usr/include/qt4/QtCore"
+      } else {
+        lappend anErrInc "Error: 'QtGui/qmessagebox.h' not found (Qt4)"
        set isFound "false"
+      }
    }
  }

  set aQtGuiLibName "QtGui"
  if { "$::tcl_platform(platform)" == "windows" } {
-    set aQtGuiLibName "Qt5Gui"
+    set aQtGuiLibName "QtGui4"
  }

  foreach anArchIter {64 32} {
    set aQMsgBoxLibPath [wokdep:SearchLib "${aQtGuiLibName}" "$anArchIter"]
    if { "$aQMsgBoxLibPath" == "" } {
+      set aPath [wokdep:Preferred [glob -nocomplain -directory "$::PRODUCTS_PATH" -type d *{qt4}*] "$::VCVER" "$anArchIter" ]
      set aQMsgBoxLibPath [wokdep:SearchLib "${aQtGuiLibName}" "$anArchIter" "$aPath/lib"]
      if { "$aQMsgBoxLibPath" != "" } {
        lappend ::CSF_OPT_LIB$anArchIter "$aPath/lib"
      } else {
-        lappend anErrLib$anArchIter "Error: '${::SYS_LIB_PREFIX}${aQtGuiLibName}.${::SYS_LIB_SUFFIX}' not found (Qt)"
+        lappend anErrLib$anArchIter "Error: '${::SYS_LIB_PREFIX}${aQtGuiLibName}.${::SYS_LIB_SUFFIX}' not found (Qt4)"
        if { "$::ARCH" == "$anArchIter"} { set isFound "false" }
      }
    }
    if { "$::tcl_platform(platform)" == "windows" } {
-      set aQMsgBoxDllPath [wokdep:SearchBin "${aQtGuiLibName}.dll" "$anArchIter"]
+      set aQMsgBoxDllPath [wokdep:SearchBin "QtGui4.dll" "$anArchIter"]
      if { "$aQMsgBoxDllPath" == "" } {
-        set aQMsgBoxDllPath [wokdep:SearchBin "${aQtGuiLibName}.dll" "$anArchIter" "$aPath/bin"]
+        set aPath [wokdep:Preferred [glob -nocomplain -directory "$::PRODUCTS_PATH" -type d *{qt4}*] "$::VCVER" "$anArchIter" ]
+        set aQMsgBoxDllPath [wokdep:SearchBin "QtGui4.dll" "$anArchIter" "$aPath/bin"]
        if { "$aQMsgBoxDllPath" != "" } {
          lappend ::CSF_OPT_BIN$anArchIter "$aPath/bin"
        } else {
-          lappend anErrBin$anArchIter "Error: '${aQtGuiLibName}.dll' not found (Qt)"
+          lappend anErrBin$anArchIter "Error: 'QtGui4.dll' not found (Qt4)"
          if { "$::ARCH" == "$anArchIter"} { set isFound "false" }
        }
      }
--- a/adm/genproj.tcl
+++ b/adm/genproj.tcl
--- a/adm/occaux.tcl
+++ b/adm/occaux.tcl
@@ -179,10 +179,8 @@ proc OCCDoc_DetectNecessarySoftware { DOXYGEN_PATH GRAPHVIZ_PATH INKSCAPE_PATH H
  }
  if {"$is_win" == "yes"} {
    set exe ".exe"
-    set com ".com"
  } else {
    set exe ""
-    set com ""
  }

  set g_flag "no"
@@ -226,11 +224,11 @@ proc OCCDoc_DetectNecessarySoftware { DOXYGEN_PATH GRAPHVIZ_PATH INKSCAPE_PATH H
      }
    }
    if {$i_flag == "no"} {
-      if { [file exists $path/inkscape$com] } {
+      if { [file exists $path/inkscape$exe] } {
        catch { exec $path/inkscape -V } version
        puts "Info: $version " 
        puts "      found in $path."
-        set inkscape_path "$path/inkscape$com"
+        set inkscape_path "$path/inkscape$exe"
        set i_flag "yes"
      }
    }
@@ -358,29 +356,15 @@ proc OCCDoc_DetectNecessarySoftware { DOXYGEN_PATH GRAPHVIZ_PATH INKSCAPE_PATH H
 # Convert SVG files to PDF format to allow including them to PDF
 # (requires InkScape to be in PATH)
 proc OCCDoc_ProcessSvg {latexDir verboseMode} {
-  set anSvgList [glob -nocomplain $latexDir/*.svg]
-  if { $anSvgList == {} } {
-    return
-  }

-  catch { exec inkscape -V } anInkVer
-  set isOldSyntax 0
-  if {[string match "Inkscape 0.*" $anInkVer]} { set isOldSyntax 1 }
-  foreach file $anSvgList {
+  foreach file [glob -nocomplain $latexDir/*.svg] {
    if {$verboseMode == "YES"} {
      puts "Info: Converting file $file..."
    }
    set pdffile "[file rootname $file].pdf"
-    if { $isOldSyntax == 1 } {
-      if { [catch {exec inkscape -z -D --file=$file --export-pdf=$pdffile} res] } {
-        #puts "Error: $res."
-        return
-      }
-    } else {
-      if { [catch {exec inkscape $file --export-area-drawing --export-type=pdf --export-filename=$pdffile} res] } {
-        #puts "Error: $res."
-        return
-      }
+    if { [catch {exec inkscape -z -D --file=$file --export-pdf=$pdffile} res] } {
+      #puts "Error: $res."
+      return
    }
  }
 }
@@ -915,4 +899,4 @@ proc OCCDoc_ProcessTex {{texFiles {}} {latexDir} verboseMode} {
    file delete -force $TEX
    file rename $TMPFILENAME $TEX
  }
-}
+}
--- a/adm/qmake/OccToolkit.pri
+++ b/adm/qmake/OccToolkit.pri
@@ -77,8 +77,8 @@ for (aCfgIter, CONFIG) {
 # Define the list of standard OCCT file extensions
 aHxxRegex = ^.*\.(hxx|h|lxx|gxx)$
 aPxxRegex = ^.*\.(pxx)$
-aCxxRegex = ^.*\.(cxx|cpp|c)$
-mac { aCxxRegex = ^.*\.(cxx|cpp|c|m|mm)$ }
+aCxxRegex = ^.*\.(cxx|c)$
+mac { aCxxRegex = ^.*\.(cxx|c|m|mm)$ }

 # Auxiliary function for probing file extension
 defineTest (occCheckExtension) {
--- a/adm/scripts/.gitignore
+++ b/adm/scripts/.gitignore
@@ -1,2 +0,0 @@
-*custom.bat
-*custom.sh
--- a/adm/scripts/android_build.bat
+++ b/adm/scripts/android_build.bat
@@ -1,234 +0,0 @@
-@echo OFF
-
-rem Auxiliary script for semi-automated building of OCCT for Android platform.
-rem android_custom.bat should be configured with paths
-rem to CMake, 3rd-parties, Android NDK and MinGW make tool.
-
-set "aCasSrc=%~dp0..\.."
-set "aBuildRoot=%aCasSrc%\work"
-
-set aNbJobs=%NUMBER_OF_PROCESSORS%
-
-rem Paths to 3rd-party tools and libraries
-set "anNdkPath="
-set "aFreeType="
-set "aRapidJson="
-
-rem Build stages to perform
-set "toCMake=1"
-set "toClean=0"
-set "toMake=1"
-set "toInstall=1"
-set "toPack=1"
-set "isStatic=0"
-
-rem Minimal Android platform and CPU architectures
-set "anNdkApiLevel=21"
-set "anNdkAbiList=armeabi-v7a x86 arm64-v8a x86_64"
-
-rem OCCT Modules to build
-set "BUILD_ModelingData=ON"
-set "BUILD_ModelingAlgorithms=ON"
-set "BUILD_Visualization=ON"
-set "BUILD_ApplicationFramework=ON"
-set "BUILD_DataExchange=ON"
-
-rem Optional 3rd-party libraries to enable
-set USE_RAPIDJSON=OFF
-
-rem Archive tool
-set "THE_7Z_PARAMS=-t7z -m0=lzma -mx=9 -mfb=64 -md=32m -ms=on"
-set "THE_7Z_PATH=%ProgramW6432%\7-Zip\7z.exe"
-
-rem Configuration file
-if exist "%~dp0android_custom.bat" call "%~dp0android_custom.bat"
-
-set "aCompiler=gcc"
-set "aCppLib=gnustl_shared"
-if not exist "%anNdkPath%/sources/cxx-stl/gnu-libstdc++" (
-  if exist "%anNdkPath%/sources/cxx-stl/llvm-libc++" (
-    set "aCompiler=clang"
-    set "aCppLib=c++_shared"
-  )
-)
-set "aLibType=Shared"
-if ["%isStatic%"] == ["1"] set "aLibType=Static"
-set "aDestDir=%aBuildRoot%\android-%aCompiler%"
-
-set "anOcctVerSuffix="
-set "anOcctVersion=0.0.0"
-set "aGitBranch="
-for /f tokens^=2^ delims^=^" %%i in ('findstr /b /c:"#define OCC_VERSION_DEVELOPMENT" "%aCasSrc%\src\Standard\Standard_Version.hxx"') do ( set "anOcctVerSuffix=%%i" )
-for /f tokens^=2^ delims^=^" %%i in ('findstr /b /c:"#define OCC_VERSION_COMPLETE" "%aCasSrc%\src\Standard\Standard_Version.hxx"') do ( set "anOcctVersion=%%i" )
-for /f %%i in ('git symbolic-ref --short HEAD') do ( set "aGitBranch=%%i" )
-
-for %%s in (%anNdkAbiList%) do (
-  call :cmakeGenerate "%anNdkApiLevel%" "%%s"
-)
-
-for /F "skip=1 delims=" %%F in ('
-  wmic PATH Win32_LocalTime GET Day^,Month^,Year /FORMAT:TABLE
-') do (
-  for /F "tokens=1-3" %%L in ("%%F") do (
-    set DAY00=0%%L
-    set MONTH00=0%%M
-    set YEAR=%%N
-  )
-)
-set DAY00=%DAY00:~-2%
-set MONTH00=%MONTH00:~-2%
-set "aRevision=-%YEAR%-%MONTH00%-%DAY00%"
-rem set "aRevision=-%aGitBranch%"
-set "anArchName=occt-%anOcctVersion%%anOcctVerSuffix%%aRevision%-android"
-set "aTarget=%aBuildRoot%\%anArchName%"
-if ["%toPack%"] == ["1"] (
-  echo Creating archive %anArchName%.7z
-  rmdir /S /Q "%aTarget%"
-  if not exist "%aTarget%" ( mkdir "%aTarget%" )
-  if exist "%aBuildRoot%/%anArchName%.7z" del "%aBuildRoot%/%anArchName%.7z"
-  xcopy /S /Y "%aDestDir%\*" "%aTarget%\"
-
-  "%THE_7Z_PATH%" a -r %THE_7Z_PARAMS% "%aBuildRoot%/%anArchName%.7z" "%aTarget%"
-)
-if not ["%1"] == ["-nopause"] (
-  pause
-)
-
-goto :eof
-
-:cmakeGenerate
-set "anApi=%~1"
-set "anAbi=%~2"
-set "aPlatformAndCompiler=android-%anAbi%-%aCompiler%"
-set "aWorkDir=%aBuildRoot%\%aPlatformAndCompiler%-make"
-set "aLogFile=%aBuildRoot%\build-%aPlatformAndCompiler%.log"
-if not exist "%aWorkDir%" ( mkdir "%aWorkDir%" )
-if     exist "%aLogFile%" ( del   "%aLogFile%" )
-
-rem include some information about OCCT into archive
-echo ^<pre^>> "%aWorkDir%\VERSION.html"
-git status >> "%aWorkDir%\VERSION.html"
-git log -n 100 >> "%aWorkDir%\VERSION.html"
-echo ^</pre^>>> "%aWorkDir%\VERSION.html"
-
-echo Start building OCCT for %aPlatformAndCompiler%
-echo Start building OCCT for %aPlatformAndCompiler%>> %aLogFile%
-
-pushd "%aWorkDir%"
-
-set "aTimeZERO=%TIME%"
-if ["%toCMake%"] == ["1"] (
-  echo Configuring OCCT for Android %anAbi%, API level %anApi%...
-  cmake -G "MinGW Makefiles" ^
- -D CMAKE_SYSTEM_NAME:STRING="Android" ^
- -D CMAKE_ANDROID_NDK="%anNdkPath%" ^
- -D CMAKE_BUILD_TYPE:STRING="Release" ^
- -D CMAKE_ANDROID_ARCH_ABI:STRING="%anAbi%" ^
- -D CMAKE_SYSTEM_VERSION:STRING="%anApi%" ^
- -D CMAKE_ANDROID_STL_TYPE="%aCppLib%" ^
- -D BUILD_LIBRARY_TYPE:STRING="%aLibType%" ^
- -D INSTALL_DIR:PATH="%aDestDir%" ^
- -D INSTALL_DIR_INCLUDE:STRING="inc" ^
- -D INSTALL_DIR_LIB:STRING="libs/%anAbi%" ^
- -D INSTALL_DIR_CMAKE:STRING="libs/%anAbi%/cmake/opencascade" ^
- -D INSTALL_DIR_RESOURCE:STRING="src" ^
- -D BUILD_MODULE_FoundationClasses:BOOL="ON" ^
- -D BUILD_MODULE_ModelingData:BOOL="%BUILD_ModelingData%" ^
- -D BUILD_MODULE_ModelingAlgorithms:BOOL="%BUILD_ModelingAlgorithms%" ^
- -D BUILD_MODULE_Visualization:BOOL="%BUILD_Visualization%" ^
- -D BUILD_MODULE_ApplicationFramework:BOOL="%BUILD_ApplicationFramework%" ^
- -D BUILD_MODULE_DataExchange:BOOL="%BUILD_DataExchange%" ^
- -D BUILD_MODULE_Draw:BOOL="OFF" ^
- -D BUILD_DOC_Overview:BOOL="OFF" ^
- -D 3RDPARTY_FREETYPE_DIR:PATH="%aFreeType%" ^
- -D 3RDPARTY_FREETYPE_INCLUDE_DIR_freetype2:FILEPATH="%aFreeType%/include" ^
- -D 3RDPARTY_FREETYPE_INCLUDE_DIR_ft2build:FILEPATH="%aFreeType%/include" ^
- -D 3RDPARTY_FREETYPE_LIBRARY_DIR:PATH="%aFreeType%/libs/%anAbi%" ^
- -D 3RDPARTY_FREETYPE_LIBRARY:FILEPATH="%aFreeType%/libs/%anAbi%/libfreetype.so" ^
- -D USE_RAPIDJSON:BOOL="%USE_RAPIDJSON%" ^
- -D 3RDPARTY_RAPIDJSON_DIR:PATH="%aRapidJson%" ^
- -D 3RDPARTY_RAPIDJSON_INCLUDE_DIR:PATH="%aRapidJson%/include" ^
- "%aCasSrc%"
-
-  if errorlevel 1 (
-    popd
-    exit /B 1
-    goto :eof
-  )
-)
-set aTimeGEN=%TIME%
-call :computeDuration %aTimeZERO% %aTimeGEN%
-if ["%toCMake%"] == ["1"] (
-  echo Generation time: %DURATION%
-  echo Generation time: %DURATION%>> "%aLogFile%"
-)
-
-if ["%toClean%"] == ["1"] (
-  mingw32-make clean
-)
-
-if ["%toMake%"] == ["1"] (
-  echo Building...
-  mingw32-make -j %aNbJobs% 2>> "%aLogFile%"
-  if errorlevel 1 (
-    type "%aLogFile%"
-    popd
-    exit /B 1
-    goto :eof
-  )
-  type "%aLogFile%"
-)
-set aTimeBUILD=%TIME%
-call :computeDuration %aTimeGEN% %aTimeBUILD%
-if ["%toMake%"] == ["1"] (
-  echo Building time: %DURATION%
-  echo Building time: %DURATION%>> "%aLogFile%"
-)
-call :computeDuration %aTimeZERO% %aTimeBUILD%
-if ["%toMake%"] == ["1"] (
-  echo Total building time: %DURATION%
-  echo Total building time: %DURATION%>> "%aLogFile%"
-)
-
-if ["%toInstall%"] == ["1"] (
-  echo Installing into %aDestDir%...
-  mingw32-make install 2>> "%aLogFile%"
-  copy /Y "%aWorkDir%\VERSION.html" "%aDestDir%\VERSION.html"
-)
-set "aTimeINSTALL=%TIME%"
-call :computeDuration "%aTimeBUILD%" "%aTimeINSTALL%"
-if ["%toInstall%"] == ["1"] (
-  echo Install time: %DURATION%
-  echo Install time: %DURATION%>> "%aLogFile%"
-)
-
-call :computeDuration "%aTimeZERO%" "%aTimeINSTALL%"
-echo Total time: %DURATION%
-echo Total time: %DURATION%>> "%aLogFile%"
-
-popd
-goto :eof
-
-:computeDuration
-set "aTimeFrom=%~1"
-set "aTimeEnd=%~2"
-rem handle time before 10AM (win10 - remove empty space at the beginning)
-if "%aTimeFrom:~0,1%"==" " set "aTimeFrom=%aTimeFrom:~1%"
-if  "%aTimeEnd:~0,1%"==" " set  "aTimeEnd=%aTimeEnd:~1%"
-rem handle time before 10AM (win7 - add 0 at the beginning)
-if "%aTimeFrom:~1,1%"==":" set "aTimeFrom=0%aTimeFrom%"
-if  "%aTimeEnd:~1,1%"==":" set  "aTimeEnd=0%aTimeEnd%"
-rem convert hours:minutes:seconds:ms into duration
-set /A aTimeFrom=(1%aTimeFrom:~0,2%-100)*360000 + (1%aTimeFrom:~3,2%-100)*6000 + (1%aTimeFrom:~6,2%-100)*100 + (1%aTimeFrom:~9,2%-100)
-set /A  aTimeEnd= (1%aTimeEnd:~0,2%-100)*360000 +  (1%aTimeEnd:~3,2%-100)*6000 +  (1%aTimeEnd:~6,2%-100)*100 +  (1%aTimeEnd:~9,2%-100)
-set /A aDurTotalSec=%aTimeEnd%-%aTimeFrom%
-if %aTimeEnd% LSS %aTimeFrom% set set /A aDurTotalSec=%aTimeFrom%-%aTimeEnd%
-set /A aDurHH=%aDurTotalSec% / 360000
-set /A aDurMM=(%aDurTotalSec% - %aDurHH%*360000) / 6000
-set /A aDurSS=(%aDurTotalSec% - %aDurHH%*360000 - %aDurMM%*6000) / 100
-if %aDurHH% LSS 10 set aDurHH=0%aDurHH%
-if %aDurMM% LSS 10 set aDurMM=0%aDurMM%
-if %aDurSS% LSS 10 set aDurSS=0%aDurSS%
-
-set "DURATION=%aDurHH%:%aDurMM%:%aDurSS%"
-goto :eof
--- a/adm/scripts/android_custom.bat.template
+++ b/adm/scripts/android_custom.bat.template
@@ -1,31 +0,0 @@
-rem Environment configuration template for android_build.bat (to be renamed as android_custom.bat)
-
-rem Paths to 3rd-party tools and libraries
-rem call c:\TDM-GCC-64\mingwvars.bat
-rem set "PATH=c:\CMake\bin;%PATH%"
-rem set "anNdkPath=c:/android-ndk-r12"
-rem set "aFreeType=c:/freetype-2.7.1-android"
-rem set "aRapidJson=c:/rapidjson-1.1.0"
-
-rem Uncomment to customize building steps
-rem set "aBuildRoot=%~dp0..\..\work"
-rem set "toCMake=1"
-rem set "toClean=0"
-rem set "toMake=1"
-rem set "toInstall=1"
-rem set "toPack=1"
-rem set "isStatic=0"
-
-rem Minimal Android platform and CPU architectures
-rem set "anNdkApiLevel=21"
-rem set "anNdkAbiList=arm64-v8a x86_64"
-
-rem OCCT Modules to build
-rem set "BUILD_ModelingData=ON"
-rem set "BUILD_ModelingAlgorithms=ON"
-rem set "BUILD_Visualization=ON"
-rem set "BUILD_ApplicationFramework=ON"
-rem set "BUILD_DataExchange=ON"
-
-rem Optional 3rd-party libraries to enable
-rem set USE_RAPIDJSON=ON
--- a/adm/scripts/cmake_custom.bat.template
+++ b/adm/scripts/cmake_custom.bat.template
@@ -1,46 +0,0 @@
-rem Environment configuration template for cmake_gen.bat (to be renamed as cmake_gen_custom.bat)
-
-set "OCCT3RDPARTY=%SrcRoot%\..\3rdparty"
-
-set VS=14
-set VSDATA=2015
-
-rem Leave VSPLATFORM empty to build for x86 platform
-set VSPLATFORM=Win64
-
-rem ------------------------------------
-rem Uncomment to customize building steps
-rem ------------------------------------
-
-rem set "BUILD_DIR=build-vs%VS%-%VSPLATFORM%"
-rem set "INSTALL_DIR=%SrcRoot%\install"
-
-rem set BUILD_DOC_Overview=OFF
-rem set BUILD_Inspector=OFF
-rem set BUILD_LIBRARY_TYPE=Shared
-rem set BUILD_RELEASE_DISABLE_EXCEPTIONS=ON
-rem set BUILD_WITH_DEBUG=OFF
-rem set BUILD_ENABLE_FPE_SIGNAL_HANDLER=ON
-rem set BUILD_USE_PCH=OFF
-
-rem Use semicolon-separated list of toolkits if you want to disable all modules
-rem  and build only some toolkits.
-rem set BUILD_ADDITIONAL_TOOLKITS=
-
-rem Set a directory recognized as a patch for OCCT.
-rem set BUILD_PATCH=
-
-rem set BUILD_MODULE_ApplicationFramework=ON
-rem set BUILD_MODULE_DataExchange=ON
-rem set BUILD_MODULE_Draw=ON
-rem set BUILD_MODULE_ModelingAlgorithms=ON
-rem set BUILD_MODULE_ModelingData=ON
-rem set BUILD_MODULE_Visualization=ON
-
-rem set USE_D3D=OFF
-rem set USE_FFMPEG=OFF
-rem set USE_FREEIMAGE=OFF
-rem set USE_GLES2=OFF
-rem set USE_RAPIDJSON=OFF
-rem set USE_TBB=OFF
-rem set USE_VTK=OFF
--- a/adm/scripts/cmake_custom.sh.template
+++ b/adm/scripts/cmake_custom.sh.template
@@ -1,42 +0,0 @@
-# Environment configuration template for cmake_gen.sh (to be renamed as cmake_gen_custom.sh)
-
-OCCT3RDPARTY="$SrcRoot/../3rdparty"
-FREETYPE_DIR="$OCCT3RDPARTY/freetype-2.7.1"
-
-# ------------------------------------
-# Uncomment to customize building steps
-# ------------------------------------
-
-#BUILD_DIR=build
-#INSTALL_DIR="$SrcRoot/install"
-
-#BUILD_DOC_Overview=OFF
-#BUILD_Inspector=OFF
-#BUILD_LIBRARY_TYPE=Shared
-#BUILD_RELEASE_DISABLE_EXCEPTIONS=ON
-#BUILD_WITH_DEBUG=OFF
-#BUILD_ENABLE_FPE_SIGNAL_HANDLER=ON
-
-# Use semicolon-separated list of toolkits if you want to disable all modules
-#  and build only some toolkits.
-#BUILD_ADDITIONAL_TOOLKITS=
-
-# Set a directory recognized as a patch for OCCT.
-#BUILD_PATCH=
-
-#BUILD_MODULE_ApplicationFramework=ON
-#BUILD_MODULE_DataExchange=ON
-#BUILD_MODULE_Draw=ON
-#BUILD_MODULE_ModelingAlgorithms=ON
-#BUILD_MODULE_ModelingData=ON
-#BUILD_MODULE_Visualization=ON
-
-#USE_FFMPEG=OFF
-#USE_FREEIMAGE=OFF
-#USE_GLES2=OFF
-#USE_RAPIDJSON=OFF
-#USE_TBB=OFF
-#USE_VTK=OFF
-
-# This is to add any additional arguments to cmake
-#AUX_ARGS=
--- a/adm/scripts/cmake_gen.bat
+++ b/adm/scripts/cmake_gen.bat
@@ -1,83 +0,0 @@
-@echo off
-
-rem Auxiliary script for semi-automated building of OCCT using cmake.
-rem cmake_custom.bat should be configured with VS version and path to 3rd-parties.
-rem OCCT3RDPARTY must be specified as mandatory dependency.
-
-setlocal
-
-set "SrcRoot=%~dp0..\.."
-
-set VS=14
-set VSDATA=2015
-set VSPLATFORM=Win64
-set "BUILD_DIR=build-vs%VS%-%VSPLATFORM%"
-set "INSTALL_DIR=%SrcRoot%\install"
-
-set BUILD_ADDITIONAL_TOOLKITS=
-set BUILD_DOC_Overview=OFF
-set BUILD_Inspector=OFF
-set BUILD_LIBRARY_TYPE=Shared
-set BUILD_PATCH=
-set BUILD_RELEASE_DISABLE_EXCEPTIONS=ON
-set BUILD_WITH_DEBUG=OFF
-set BUILD_ENABLE_FPE_SIGNAL_HANDLER=ON
-set BUILD_USE_PCH=OFF
-
-set BUILD_MODULE_ApplicationFramework=ON
-set BUILD_MODULE_DataExchange=ON
-set BUILD_MODULE_Draw=ON
-set BUILD_MODULE_ModelingAlgorithms=ON
-set BUILD_MODULE_ModelingData=ON
-set BUILD_MODULE_Visualization=ON
-
-set USE_D3D=OFF
-set USE_FFMPEG=OFF
-set USE_FREEIMAGE=OFF
-set USE_GLES2=OFF
-set USE_RAPIDJSON=OFF
-set USE_TBB=OFF
-set USE_VTK=OFF
-
-if exist "%~dp0cmake_custom.bat" call "%~dp0cmake_custom.bat"
-
-if not "%VSPLATFORM%"=="" set "arch_compile=Visual Studio %VS% %VSDATA% %VSPLATFORM%"
-if     "%VSPLATFORM%"=="" set "arch_compile=Visual Studio %VS% %VSDATA%"
-
-set "INSTALL_DIR=%INSTALL_DIR:\=/%"
-set "OCCT3RDPARTY=%OCCT3RDPARTY:\=/%"
-
-set "BUILD_DIR=%SrcRoot%\%BUILD_DIR%"
-if not exist "%BUILD_DIR%" mkdir "%BUILD_DIR%"
-pushd "%BUILD_DIR%"
- 
-cmake -G "%arch_compile%" ^
-  -D 3RDPARTY_DIR:STRING="%OCCT3RDPARTY%" ^
-  -D BUILD_ADDITIONAL_TOOLKITS:STRING="%BUILD_ADDITIONAL_TOOLKITS%" ^
-  -D BUILD_DOC_Overview:BOOL=%BUILD_DOC_Overview% ^
-  -D BUILD_Inspector:BOOL=%BUILD_Inspector% ^
-  -D BUILD_LIBRARY_TYPE:STRING=%BUILD_LIBRARY_TYPE% ^
-  -D BUILD_MODULE_ApplicationFramework:BOOL=%BUILD_MODULE_ApplicationFramework% ^
-  -D BUILD_MODULE_DataExchange:BOOL=%BUILD_MODULE_DataExchange% ^
-  -D BUILD_MODULE_Draw:BOOL=%BUILD_MODULE_Draw% ^
-  -D BUILD_MODULE_FoundationClasses:BOOL=ON ^
-  -D BUILD_MODULE_ModelingAlgorithms:BOOL=%BUILD_MODULE_ModelingAlgorithms% ^
-  -D BUILD_MODULE_ModelingData:BOOL=%BUILD_MODULE_ModelingData% ^
-  -D BUILD_MODULE_Visualization:BOOL=%BUILD_MODULE_Visualization% ^
-  -D BUILD_PATCH:PATH="%BUILD_PATCH%" ^
-  -D BUILD_RELEASE_DISABLE_EXCEPTIONS:BOOL=%BUILD_RELEASE_DISABLE_EXCEPTIONS% ^
-  -D BUILD_WITH_DEBUG:BOOL=%BUILD_WITH_DEBUG% ^
-  -D BUILD_ENABLE_FPE_SIGNAL_HANDLER:BOOL=%BUILD_ENABLE_FPE_SIGNAL_HANDLER% ^
-  -D BUILD_USE_PCH:BOOL=%BUILD_USE_PCH% ^
-  -D INSTALL_DIR:PATH="%INSTALL_DIR%" ^
-  -D USE_D3D:BOOL=%USE_D3D% ^
-  -D USE_FFMPEG:BOOL=%USE_FFMPEG% ^
-  -D USE_FREEIMAGE:BOOL=%USE_FREEIMAGE% ^
-  -D USE_GLES2:BOOL=%USE_GLES2% ^
-  -D USE_RAPIDJSON:BOOL=%USE_RAPIDJSON% ^
-  -D USE_TBB:BOOL=%USE_TBB% ^
-  -D USE_VTK:BOOL=%USE_VTK% ^
-  "%SrcRoot%"
-
-popd
-endlocal
--- a/adm/scripts/cmake_gen.sh
+++ b/adm/scripts/cmake_gen.sh
@@ -1,86 +0,0 @@
-#!/bin/bash
-
-# Auxiliary script for semi-automated building of OCCT using cmake.
-# cmake_custom.sh should be configured with path to 3rd-parties.
-# OCCT3RDPARTY and FREETYPE_DIR must be specified as mandatory dependencies.
-
-ScriptDir="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && pwd )"
-SrcRoot="${ScriptDir}/../.."
-
-INSTALL_DIR="$SrcRoot/install"
-
-BUILD_DIR=build
-DEB=
-CMAKE_BUILD_TYPE=Release
-if [ "$1" = "-d" ]; then
-  DEB=d
-  BUILD_DIR=${BUILD_DIR}-deb
-  CMAKE_BUILD_TYPE=Debug
-fi
-INSTALL_DIR_BIN=lin64/gcc/bin$DEB
-INSTALL_DIR_LIB=lin64/gcc/lib$DEB
-
-BUILD_ADDITIONAL_TOOLKITS=
-BUILD_DOC_Overview=OFF
-BUILD_Inspector=OFF
-BUILD_LIBRARY_TYPE=Shared
-BUILD_PATCH=
-BUILD_RELEASE_DISABLE_EXCEPTIONS=ON
-BUILD_WITH_DEBUG=OFF
-BUILD_ENABLE_FPE_SIGNAL_HANDLER=ON
-
-BUILD_MODULE_ApplicationFramework=ON
-BUILD_MODULE_DataExchange=ON
-BUILD_MODULE_Draw=ON
-BUILD_MODULE_ModelingAlgorithms=ON
-BUILD_MODULE_ModelingData=ON
-BUILD_MODULE_Visualization=ON
-
-USE_FFMPEG=OFF
-USE_FREEIMAGE=OFF
-USE_GLES2=OFF
-USE_RAPIDJSON=OFF
-USE_TBB=OFF
-USE_VTK=OFF
-AUX_ARGS=
-
-if [ -f "${ScriptDir}/cmake_custom.sh" ]; then
-  . "${ScriptDir}/cmake_custom.sh"
-fi
-
-BUILD_DIR="$SrcRoot/$BUILD_DIR"
-if [ ! -d "$BUILD_DIR" ]; then mkdir -p "$BUILD_DIR"; fi
-pushd "$BUILD_DIR"
- 
-cmake -G "Unix Makefiles" \
-  -D CMAKE_BUILD_TYPE=$CMAKE_BUILD_TYPE \
-  -D 3RDPARTY_DIR:PATH="$OCCT3RDPARTY" \
-  -D 3RDPARTY_FREETYPE_DIR:PATH="$FREETYPE_DIR" \
-  -D BUILD_ADDITIONAL_TOOLKITS:STRING="$BUILD_ADDITIONAL_TOOLKITS" \
-  -D BUILD_DOC_Overview:BOOL=$BUILD_DOC_Overview \
-  -D BUILD_Inspector:BOOL=$BUILD_Inspector \
-  -D BUILD_LIBRARY_TYPE:STRING=$BUILD_LIBRARY_TYPE \
-  -D BUILD_MODULE_ApplicationFramework:BOOL=$BUILD_MODULE_ApplicationFramework \
-  -D BUILD_MODULE_DataExchange:BOOL=$BUILD_MODULE_DataExchange \
-  -D BUILD_MODULE_Draw:BOOL=$BUILD_MODULE_Draw \
-  -D BUILD_MODULE_FoundationClasses:BOOL=ON \
-  -D BUILD_MODULE_ModelingAlgorithms:BOOL=$BUILD_MODULE_ModelingAlgorithms \
-  -D BUILD_MODULE_ModelingData:BOOL=$BUILD_MODULE_ModelingData \
-  -D BUILD_MODULE_Visualization:BOOL=$BUILD_MODULE_Visualization \
-  -D BUILD_PATCH:PATH="$BUILD_PATCH" \
-  -D BUILD_RELEASE_DISABLE_EXCEPTIONS:BOOL=$BUILD_RELEASE_DISABLE_EXCEPTIONS \
-  -D BUILD_WITH_DEBUG:BOOL=$BUILD_WITH_DEBUG \
-  -D BUILD_ENABLE_FPE_SIGNAL_HANDLER:BOOL=$BUILD_ENABLE_FPE_SIGNAL_HANDLER \
-  -D INSTALL_DIR:PATH="$INSTALL_DIR" \
-  -D INSTALL_DIR_LAYOUT:STRING=Windows \
-  -D INSTALL_DIR_BIN:STRING=$INSTALL_DIR_BIN \
-  -D INSTALL_DIR_LIB:STRING=$INSTALL_DIR_LIB \
-  -D USE_FFMPEG:BOOL=$USE_FFMPEG \
-  -D USE_FREEIMAGE:BOOL=$USE_FREEIMAGE \
-  -D USE_GLES2:BOOL=$USE_GLES2 \
-  -D USE_RAPIDJSON:BOOL=$USE_RAPIDJSON \
-  -D USE_TBB:BOOL=$USE_TBB \
-  -D USE_VTK:BOOL=$USE_VTK \
-  $AUX_ARGS "$SrcRoot"
-
-popd
--- a/adm/scripts/wasm_build.bat
+++ b/adm/scripts/wasm_build.bat
@@ -1,165 +0,0 @@
-@echo OFF
-
-rem Auxiliary script for semi-automated building of OCCT for WASM platform.
-rem wasm_custom.bat should be configured with paths to CMake, 3rd-parties and Emscripten SDK.
-rem FreeType should be specified as mandatory dependency.
-
-set "aSrcRoot=%~dp0..\.."
-set "aBuildRoot=work"
-
-set aNbJobs=%NUMBER_OF_PROCESSORS%
-
-set "toCMake=1"
-set "toClean=0"
-set "toMake=1"
-set "toInstall=1"
-
-set "BUILD_ModelingData=ON"
-set "BUILD_ModelingAlgorithms=ON"
-set "BUILD_Visualization=ON"
-set "BUILD_ApplicationFramework=ON"
-set "BUILD_DataExchange=ON"
-
-rem Configuration file
-if exist "%~dp0wasm_custom.bat" call "%~dp0wasm_custom.bat"
-
-call "%EMSDK_ROOT%\emsdk_env.bat"
-set "aToolchain=%EMSDK%/upstream/emscripten/cmake/Modules/Platform/Emscripten.cmake"
-
-set "anOcctVerSuffix="
-set "anOcctVersion=0.0.0"
-set "aGitBranch="
-for /f tokens^=2^ delims^=^" %%i in ('findstr /b /c:"#define OCC_VERSION_DEVELOPMENT" "%aSrcRoot%\src\Standard\Standard_Version.hxx"') do ( set "anOcctVerSuffix=%%i" )
-for /f tokens^=2^ delims^=^" %%i in ('findstr /b /c:"#define OCC_VERSION_COMPLETE" "%aSrcRoot%\src\Standard\Standard_Version.hxx"') do ( set "anOcctVersion=%%i" )
-for /f %%i in ('git symbolic-ref --short HEAD') do ( set "aGitBranch=%%i" )
-
-call :cmakeGenerate
-if not ["%1"] == ["-nopause"] (
-  pause
-)
-
-goto :eof
-
-:cmakeGenerate
-set "aPlatformAndCompiler=wasm"
-set "aWorkDir=%aSrcRoot%\%aBuildRoot%\%aPlatformAndCompiler%-make"
-set "aDestDir=%aSrcRoot%\%aBuildRoot%\%aPlatformAndCompiler%"
-set "aLogFile=%aSrcRoot%\%aBuildRoot%\build-%aPlatformAndCompiler%.log"
-if not exist "%aWorkDir%" ( mkdir "%aWorkDir%" )
-if     exist "%aLogFile%" ( del   "%aLogFile%" )
-
-rem include some information about OCCT into archive
-echo ^<pre^>> "%aWorkDir%\VERSION.html"
-git status >> "%aWorkDir%\VERSION.html"
-git log -n 100 >> "%aWorkDir%\VERSION.html"
-echo ^</pre^>>> "%aWorkDir%\VERSION.html"
-
-echo Start building OCCT for %aPlatformAndCompiler%
-echo Start building OCCT for %aPlatformAndCompiler%>> %aLogFile%
-
-pushd "%aWorkDir%"
-
-set aTimeZERO=%TIME%
-if ["%toCMake%"] == ["1"] (
-  echo "Configuring OCCT for WASM..."
-  cmake -G "MinGW Makefiles" ^
- -D CMAKE_TOOLCHAIN_FILE:FILEPATH="%aToolchain%" ^
- -D CMAKE_BUILD_TYPE:STRING="Release" ^
- -D BUILD_LIBRARY_TYPE:STRING="Static" ^
- -D INSTALL_DIR:PATH="%aDestDir%" ^
- -D INSTALL_DIR_INCLUDE:STRING="inc" ^
- -D INSTALL_DIR_RESOURCE:STRING="src" ^
- -D 3RDPARTY_FREETYPE_DIR:PATH="%aFreeType%" ^
- -D 3RDPARTY_FREETYPE_INCLUDE_DIR_freetype2:FILEPATH="%aFreeType%/include" ^
- -D 3RDPARTY_FREETYPE_INCLUDE_DIR_ft2build:FILEPATH="%aFreeType%/include" ^
- -D BUILD_MODULE_FoundationClasses:BOOL="ON" ^
- -D BUILD_MODULE_ModelingData:BOOL="%BUILD_ModelingData%" ^
- -D BUILD_MODULE_ModelingAlgorithms:BOOL="%BUILD_ModelingAlgorithms%" ^
- -D BUILD_MODULE_Visualization:BOOL="%BUILD_Visualization%" ^
- -D BUILD_MODULE_ApplicationFramework:BOOL="%BUILD_ApplicationFramework%" ^
- -D BUILD_MODULE_DataExchange:BOOL="%BUILD_DataExchange%" ^
- -D BUILD_MODULE_Draw:BOOL="OFF" ^
- -D BUILD_DOC_Overview:BOOL="OFF" ^
- "%aSrcRoot%"
-
-  if errorlevel 1 (
-    popd
-    exit /B 1
-    goto :eof
-  )
-)
-set aTimeGEN=%TIME%
-call :computeDuration %aTimeZERO% %aTimeGEN%
-if ["%toCMake%"] == ["1"] (
-  echo Generation time: %DURATION%
-  echo Generation time: %DURATION%>> "%aLogFile%"
-)
-
-if "%toClean%"=="1" (
-  mingw32-make clean
-)
-
-if "%toMake%"=="1" (
-  echo Building...
-  mingw32-make -j %aNbJobs% 2>> "%aLogFile%"
-  if errorlevel 1 (
-    popd
-    exit /B 1
-    goto :eof
-  )
-  type "%aLogFile%"
-)
-set aTimeBUILD=%TIME%
-call :computeDuration %aTimeGEN% %aTimeBUILD%
-if "%toMake%"=="1" (
-  echo Building time: %DURATION%
-  echo Building time: %DURATION%>> "%aLogFile%"
-)
-call :computeDuration %aTimeZERO% %aTimeBUILD%
-if "%toMake%"=="1" (
-  echo Total building time: %DURATION%
-  echo Total building time: %DURATION%>> "%aLogFile%"
-)
-
-if "%toInstall%"=="1" (
-  echo Installing into %aDestDir%...
-  mingw32-make install 2>> "%aLogFile%"
-  copy /Y "%aWorkDir%\VERSION.html" "%aDestDir%\VERSION.html"
-)
-set aTimeINSTALL=%TIME%
-call :computeDuration %aTimeBUILD% %aTimeINSTALL%
-if "%toInstall%"=="1" (
-  echo Install time: %DURATION%
-  echo Install time: %DURATION%>> "%aLogFile%"
-)
-
-call :computeDuration %aTimeZERO% %aTimeINSTALL%
-echo Total time: %DURATION%
-echo Total time: %DURATION%>> "%aLogFile%"
-
-popd
-goto :eof
-
-:computeDuration
-set aTimeFrom=%1
-set aTimeEnd=%2
-rem handle time before 10AM (win10 - remove empty space at the beginning)
-if "%aTimeFrom:~0,1%"==" " set "aTimeFrom=%aTimeFrom:~1%"
-if  "%aTimeEnd:~0,1%"==" " set  "aTimeEnd=%aTimeEnd:~1%"
-rem handle time before 10AM (win7 - add 0 at the beginning)
-if "%aTimeFrom:~1,1%"==":" set "aTimeFrom=0%aTimeFrom%"
-if  "%aTimeEnd:~1,1%"==":" set  "aTimeEnd=0%aTimeEnd%"
-rem convert hours:minutes:seconds:ms into duration
-set /A aTimeFrom=(1%aTimeFrom:~0,2%-100)*360000 + (1%aTimeFrom:~3,2%-100)*6000 + (1%aTimeFrom:~6,2%-100)*100 + (1%aTimeFrom:~9,2%-100)
-set /A  aTimeEnd= (1%aTimeEnd:~0,2%-100)*360000 +  (1%aTimeEnd:~3,2%-100)*6000 +  (1%aTimeEnd:~6,2%-100)*100 +  (1%aTimeEnd:~9,2%-100)
-set /A aDurTotalSec=%aTimeEnd%-%aTimeFrom%
-if %aTimeEnd% LSS %aTimeFrom% set set /A aDurTotalSec=%aTimeFrom%-%aTimeEnd%
-set /A aDurHH=%aDurTotalSec% / 360000
-set /A aDurMM=(%aDurTotalSec% - %aDurHH%*360000) / 6000
-set /A aDurSS=(%aDurTotalSec% - %aDurHH%*360000 - %aDurMM%*6000) / 100
-if %aDurHH% LSS 10 set aDurHH=0%aDurHH%
-if %aDurMM% LSS 10 set aDurMM=0%aDurMM%
-if %aDurSS% LSS 10 set aDurSS=0%aDurSS%
-
-set "DURATION=%aDurHH%:%aDurMM%:%aDurSS%"
-goto :eof
--- a/adm/scripts/wasm_build.sh
+++ b/adm/scripts/wasm_build.sh
@@ -1,126 +0,0 @@
-#!/bin/bash
-
-# Auxiliary script for semi-automated building of OCCT for WASM platform.
-# wasm_custom.sh should be configured with paths to CMake, 3rd-parties and Emscripten SDK.
-# FreeType should be specified as mandatory dependency.
-
-export aScriptDir="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && pwd )"
-export aSrcRoot="${aScriptDir}/../.."
-export aBuildRoot=work
-
-export aNbJobs=${NUMBER_OF_PROCESSORS}
-
-export toCMake=1
-export toClean=0
-export toMake=1
-export toInstall=1
-
-export BUILD_ModelingData=ON
-export BUILD_ModelingAlgorithms=ON
-export BUILD_Visualization=ON
-export BUILD_ApplicationFramework=ON
-export BUILD_DataExchange=ON
-
-if [ -f "${aScriptDir}/wasm_custom.sh" ] ; then
-  . "${aScriptDir}/wasm_custom.sh"
-fi
-
-. "${EMSDK_ROOT}/emsdk_env.sh"
-
-export aToolchain="${EMSDK}/upstream/emscripten/cmake/Modules/Platform/Emscripten.cmake"
-
-export aGitBranch=`git symbolic-ref --short HEAD`
-
-echo "Compilation OCCT branch : $aGitBranch"
-
-export aPlatformAndCompiler=wasm
-
-export aWorkDir="${aSrcRoot}/${aBuildRoot}/${aPlatformAndCompiler}-make"
-if [ ! -d "${aWorkDir}" ]; then
-  mkdir -p "${aWorkDir}"
-fi
-
-export aDestDir="${aSrcRoot}/${aBuildRoot}/${aPlatformAndCompiler}"
-if [ ! -d "${aDestDir}" ]; then
-  mkdir -p "${aDestDir}"
-fi
-
-export aLogFile="${aSrcRoot}/${aBuildRoot}/build-${aPlatformAndCompiler}.log"
-if [ -f "${aLogFile}" ]; then
-  rm "${aLogFile}"
-fi
-
-echo Start building OCCT for ${aPlatformAndCompiler}
-echo Start building OCCT for ${aPlatformAndCompiler}>> "${aLogFile}"
-
-pushd "${aWorkDir}"
-pwd
-echo toCMake=${toCMake}
-if [ "${toCMake}" = "1" ]; then
-
-echo "Configuring OCCT for WASM..."
-echo cmake -G "Unix Makefiles" -DCMAKE_TOOLCHAIN_FILE:FILEPATH="${aToolchain}" \
-DCMAKE_BUILD_TYPE:STRING="Release" \
-DBUILD_LIBRARY_TYPE:STRING="Static" \
-DINSTALL_DIR:PATH="${aDestDir}" \
-DINSTALL_DIR_INCLUDE:STRING="inc" \
-DINSTALL_DIR_RESOURCE:STRING="src" \
-D3RDPARTY_FREETYPE_DIR:PATH="$aFreeType" \
-D3RDPARTY_FREETYPE_INCLUDE_DIR_freetype2:FILEPATH="$aFreeType/include" \
-D3RDPARTY_FREETYPE_INCLUDE_DIR_ft2build:FILEPATH="$aFreeType/include" \
-DBUILD_MODULE_FoundationClasses:BOOL="ON" \
-DBUILD_MODULE_ModelingData:BOOL="${BUILD_ModelingData}" \
-DBUILD_MODULE_ModelingAlgorithms:BOOL="${BUILD_ModelingAlgorithms}" \
-DBUILD_MODULE_Visualization:BOOL="${BUILD_Visualization}" \
-DBUILD_MODULE_ApplicationFramework:BOOL="${BUILD_ApplicationFramework}" \
-DBUILD_MODULE_DataExchange:BOOL="${BUILD_DataExchange}" \
-DBUILD_MODULE_Draw:BOOL="OFF" \
-DBUILD_DOC_Overview:BOOL="OFF" "${aSrcRoot}"
-
-cmake -G "Unix Makefiles" -DCMAKE_TOOLCHAIN_FILE:FILEPATH="${aToolchain}" \
-DCMAKE_BUILD_TYPE:STRING="Release" \
-DBUILD_LIBRARY_TYPE:STRING="Static" \
-DINSTALL_DIR:PATH="${aDestDir}" \
-DINSTALL_DIR_INCLUDE:STRING="inc" \
-DINSTALL_DIR_RESOURCE:STRING="src" \
-D3RDPARTY_FREETYPE_DIR:PATH="$aFreeType" \
-D3RDPARTY_FREETYPE_INCLUDE_DIR_freetype2:FILEPATH="$aFreeType/include" \
-D3RDPARTY_FREETYPE_INCLUDE_DIR_ft2build:FILEPATH="$aFreeType/include" \
-DBUILD_MODULE_FoundationClasses:BOOL="ON" \
-DBUILD_MODULE_ModelingData:BOOL="${BUILD_ModelingData}" \
-DBUILD_MODULE_ModelingAlgorithms:BOOL="${BUILD_ModelingAlgorithms}" \
-DBUILD_MODULE_Visualization:BOOL="${BUILD_Visualization}" \
-DBUILD_MODULE_ApplicationFramework:BOOL="${BUILD_ApplicationFramework}" \
-DBUILD_MODULE_DataExchange:BOOL="${BUILD_DataExchange}" \
-DBUILD_MODULE_Draw:BOOL="OFF" \
-DBUILD_DOC_Overview:BOOL="OFF" "${aSrcRoot}"
-
-  if [ $? -ne 0 ]; then
-    echo "Problem during configuration"
-    popd
-    exit 1
-  fi
-
-fi
-
-if [ "${toClean}" = "1" ]; then
-  make clean
-fi
-
-if [ "${toMake}" = "1" ]; then
-  echo Building...
-  make -j ${aNbJobs} 2>> "${aLogFile}"
-  if [ $? -ne 0 ]; then
-    echo "Problem during make operation"
-    popd
-    exit 1
-  fi
-  echo "${aLogFile}"
-fi
-
-if [ "${toInstall}" = "1" ]; then
-  echo Installing into ${aDestDir}
-  make install 2>> "${aLogFile}"
-fi
-
-popd
--- a/adm/scripts/wasm_custom.bat.template
+++ b/adm/scripts/wasm_custom.bat.template
@@ -1,16 +0,0 @@
-rem Environment configuration template for occ_build_wasm.bat (to be renamed as wasm_custom_env.bat)
-set "aFreeType=%aSrcRoot%\..\3rdparty\freetype-2.7.1-wasm"
-set "EMSDK_ROOT=%aSrcRoot%\..\emsdk"
-
-rem Uncomment to customize building steps
-rem set "aBuildRoot=work"
-rem set "toCMake=1"
-rem set "toClean=0"
-rem set "toMake=1"
-rem set "toInstall=1"
-
-rem set "BUILD_ModelingData=ON"
-rem set "BUILD_ModelingAlgorithms=ON"
-rem set "BUILD_Visualization=ON"
-rem set "BUILD_ApplicationFramework=ON"
-rem set "BUILD_DataExchange=ON"
--- a/adm/scripts/wasm_custom.sh.template
+++ b/adm/scripts/wasm_custom.sh.template
@@ -1,16 +0,0 @@
-# environment configuration template for occ_build_wasm.sh (to be renamed as wasm_custom_env.sh)
-export aFreeType="$aSrcRoot/../3rdparty/freetype-2.7.1-wasm"
-export EMSDK_ROOT="$aSrcRoot/../emsdk"
-
-# Uncomment to customize building steps
-#export aBuildRoot=work
-#export toCMake=1
-#export toClean=0
-#export toMake=1
-#export toInstall=1
-
-#export BUILD_ModelingData=ON
-#export BUILD_ModelingAlgorithms=ON
-#export BUILD_Visualization=ON
-#export BUILD_ApplicationFramework=ON
-#export BUILD_DataExchange=ON
--- a/adm/templates/OpenCASCADEConfig.cmake.in
+++ b/adm/templates/OpenCASCADEConfig.cmake.in
@@ -21,7 +21,6 @@ set (OpenCASCADE_DEVELOPMENT_VERSION "@OCC_VERSION_DEVELOPMENT@")
 # This is made to support different locations of CMake files:
 # - in UNIX style: $INSTALL_DIR/lib/cmake/opencascade-<version>
 # - in Windows style: $INSTALL_DIR/cmake
-# - in Android style: $INSTALL_DIR/libs/$CMAKE_ANDROID_ARCH_ABI/cmake/opencascade-<version>
 get_filename_component (OpenCASCADE_INSTALL_PREFIX "${CMAKE_CURRENT_LIST_FILE}" PATH)
 get_filename_component (OpenCASCADE_INSTALL_PREFIX "${OpenCASCADE_INSTALL_PREFIX}" PATH)
 if (OpenCASCADE_INSTALL_PREFIX MATCHES "/cmake$")
@@ -30,10 +29,6 @@ endif()
 if (OpenCASCADE_INSTALL_PREFIX MATCHES "/lib$")
  get_filename_component (OpenCASCADE_INSTALL_PREFIX "${OpenCASCADE_INSTALL_PREFIX}" PATH)
 endif()
-if (OpenCASCADE_INSTALL_PREFIX MATCHES "/libs/${CMAKE_ANDROID_ARCH_ABI}$")
-  get_filename_component (OpenCASCADE_INSTALL_PREFIX "${OpenCASCADE_INSTALL_PREFIX}" PATH)
-  get_filename_component (OpenCASCADE_INSTALL_PREFIX "${OpenCASCADE_INSTALL_PREFIX}" PATH)
-endif()

 # Set OpenCASCADE paths to headers, binaries, libraries, resources, tests, samples, data
 set (OpenCASCADE_BINARY_DIR   "${OpenCASCADE_INSTALL_PREFIX}/@INSTALL_DIR_BIN@")
--- a/adm/templates/build.bat
+++ b/adm/templates/build.bat
@@ -1,38 +0,0 @@
-@echo off
-setlocal
-
-rem Setup environment
-call "%~dp0env.bat" %1 %2 %3
-
-rem Define path to project file
-set "PRJFILE=%~dp0OCCT.sln"
-
-if "%VCVER%" == "vc8" (
-  call "%VS80COMNTOOLS%/vsvars32.bat" > nul
-) else if "%VCVER%" == "vc9" (
-  call "%VS90COMNTOOLS%/vsvars32.bat" > nul
-) else if "%VCVER%" == "vc10" (
-  call "%VS100COMNTOOLS%/vsvars32.bat" > nul
-) else if "%VCVER%" == "vc11" (
-  call "%VS110COMNTOOLS%/vsvars32.bat" > nul
-) else if "%VCVER%" == "vc12" (
-  call "%VS120COMNTOOLS%/vsvars32.bat" > nul
-) else if "%VCVER%" == "vc14" (
-  call "%VS140COMNTOOLS%/vsvars32.bat" > nul
-) else if "%VCVER%" == "vc141" (
-  call "%VS141COMNTOOLS%/vsvars32.bat" > nul
-) else if "%VCVER%" == "vc142" (
-  call "%VS142COMNTOOLS%/vsvars32.bat" > nul
-) else (
-  echo Error: wrong VS identifier
-  exit /B
-)
-
-set BUILDCONFIG=Release
-if "%CASDEB%"=="i" set BUILDCONFIG=RelWithDebInfo
-if "%CASDEB%"=="d" set BUILDCONFIG=Debug
-if "%ARCH%"=="32" set PLATFORM=win32
-if "%ARCH%"=="64" set PLATFORM=x64
-
-msbuild "%PRJFILE%" /m /fl /flp:LogFile="build_%BUILDCONFIG%.log" /p:Configuration=%BUILDCONFIG% /p:Platform=%PLATFORM% /p:BuildProjectReferences=false
-endlocal
--- a/adm/templates/custom.build.bat.in
+++ b/adm/templates/custom.build.bat.in
@@ -14,7 +14,6 @@ if /I "%VCVER%" == "@COMPILER@" (
    set "TBB_DIR=@3RDPARTY_TBB_DLL_DIR@"
    set "VTK_DIR=@3RDPARTY_VTK_DLL_DIR@"
    set "FFMPEG_DIR=@3RDPARTY_FFMPEG_DLL_DIR@"
-    set "OPENVR_DIR=@3RDPARTY_OPENVR_DLL_DIRS@"

    if not "@3RDPARTY_QT_DIR@" == "" (
      set "QTDIR=@3RDPARTY_QT_DIR@"
--- a/adm/templates/custom.install.bat.in
+++ b/adm/templates/custom.install.bat.in
@@ -10,13 +10,12 @@ if /I "%VCVER%" == "@COMPILER@" (
    set "TCL_DIR=@USED_3RDPARTY_TCL_DIR@"
    set "TK_DIR=@USED_3RDPARTY_TK_DIR@"
    set "FREETYPE_DIR=@USED_3RDPARTY_FREETYPE_DIR@"
-    set "FREEIMAGE_DIR=@USED_3RDPARTY_FREEIMAGE_DIR@"
+    set "FREEIMAGE_DIR=@USED_3RDPARTY_FREEIMAGE_DIRS@"
    set "EGL_DIR=@USED_3RDPARTY_EGL_DIRS@"
    set "GLES2_DIR=@USED_3RDPARTY_GLES2_DIRS@"
    set "TBB_DIR=@USED_3RDPARTY_TBB_DIR@"
    set "VTK_DIR=@USED_3RDPARTY_VTK_DIR@"
    set "FFMPEG_DIR=@USED_3RDPARTY_FFMPEG_DIR@"
-    set "OPENVR_DIR=@USED_3RDPARTY_OPENVR_DIR@"

    if not "@USED_3RDPARTY_QT_DIR@" == "" (
      set "QTDIR=@USED_3RDPARTY_QT_DIR@"
--- a/adm/templates/env.bat
+++ b/adm/templates/env.bat
@@ -25,7 +25,6 @@ set "HAVE_D3D=false"
 set "HAVE_ZLIB=false"
 set "HAVE_LIBLZMA=false"
 set "HAVE_RAPIDJSON=false"
-set "HAVE_OPENVR=false"
 set "HAVE_E57=false"
 set "CSF_OPT_INC="
 set "CSF_OPT_LIB32="
@@ -78,9 +77,6 @@ if "%VCVER:~-4%" == "-uwp" (
  set VCLIB=%VCLIB%-uwp
  set VCPROP=Universal
 )
-if "%VCFMT%" == "vclang" (
-  set VCLIB=vc14
-)
 rem echo VCVER=%VCVER% VCFMT=%VCFMT% VCLIB=%VCLIB% VCPROP=%VCPROP%

 rem ----- Parsing of Visual Studio platform -----
@@ -110,10 +106,6 @@ if not "%DevEnvDir%" == "" (
  for /f "usebackq delims=" %%i in (`vswhere.exe -version "[16.0,16.99]" -latest -requires Microsoft.VisualStudio.Workload.%VCPROP% -property installationPath`) do (
    set "DevEnvDir=%%i\Common7\IDE\"
  )
-) else if /I "%VCFMT%" == "vclang" (
-  for /f "usebackq delims=" %%i in (`vswhere.exe -version "[16.0,16.99]" -latest -requires Microsoft.VisualStudio.Workload.%VCPROP% -property installationPath`) do (
-    set "DevEnvDir=%%i\Common7\IDE\"
-  )
 ) else if /I "%VCFMT%" == "gcc" (
  rem MinGW
 ) else (
@@ -126,7 +118,6 @@ if not "%DevEnvDir%" == "" (
  echo vc14  = VS 2015
  echo vc141 = VS 2017
  echo vc142 = VS 2019
-  echo vclang = VS 2019 with ClangCL toolset
  exit /B
 )

@@ -156,11 +147,6 @@ if /I "%VCFMT%" == "vc9" (
    set "VCVARS=%%i\VC\Auxiliary\Build\vcvarsall.bat"
  ) 
  set "VCPlatformToolSet=v142"
-) else if /I "%VCFMT%" == "vclang" (
-  for /f "usebackq delims=" %%i in (`vswhere.exe -version "[16.0,16.99]" -latest -requires Microsoft.VisualStudio.Workload.%VCPROP% -property installationPath`) do (
-    set "VCVARS=%%i\VC\Auxiliary\Build\vcvarsall.bat"
-  ) 
-  set "VCPlatformToolSet=ClangCL"
 ) else if /I "%VCFMT%" == "gcc" (
  rem MinGW
 ) else (
@@ -190,7 +176,6 @@ if ["%HAVE_D3D%"]       == ["true"] set "PRODUCTS_DEFINES=%PRODUCTS_DEFINES% -DH
 if ["%HAVE_ZLIB%"]      == ["true"] set "PRODUCTS_DEFINES=%PRODUCTS_DEFINES% -DHAVE_ZLIB"      & set "CSF_DEFINES=HAVE_ZLIB;%CSF_DEFINES%"
 if ["%HAVE_LIBLZMA%"]   == ["true"] set "PRODUCTS_DEFINES=%PRODUCTS_DEFINES% -DHAVE_LIBLZMA"   & set "CSF_DEFINES=HAVE_LIBLZMA;%CSF_DEFINES%"
 if ["%HAVE_RAPIDJSON%"] == ["true"] set "PRODUCTS_DEFINES=%PRODUCTS_DEFINES% -DHAVE_RAPIDJSON" & set "CSF_DEFINES=HAVE_RAPIDJSON;%CSF_DEFINES%"
-if ["%HAVE_OPENVR%"]    == ["true"] set "PRODUCTS_DEFINES=%PRODUCTS_DEFINES% -DHAVE_OPENVR"    & set "CSF_DEFINES=HAVE_OPENVR;%CSF_DEFINES%"
 if ["%HAVE_E57%"]       == ["true"] set "PRODUCTS_DEFINES=%PRODUCTS_DEFINES% -DHAVE_E57"       & set "CSF_DEFINES=HAVE_E57;%CSF_DEFINES%"

 rem Eliminate VS warning
--- a/adm/templates/env.bat.in
+++ b/adm/templates/env.bat.in
@@ -119,14 +119,12 @@ rem ----- For compatability with external application using CASROOT -----
 if ["%CASROOT%"] == [""] set "CASROOT=%SCRIPTROOT%"

 rem ----- Define path to 3rdparty products -----
-if ["%THIRDPARTY_DIR%"] == [""] set "THIRDPARTY_DIR=@3RDPARTY_DIR@"
+set "THIRDPARTY_DIR=@3RDPARTY_DIR@"

 if ["%ARCH%"] == ["32"] set VCARCH=x86
 if ["%ARCH%"] == ["64"] set VCARCH=amd64

 if /I ["%1"] == ["vc141"] set "VCVER=vc14"
-if /I ["%1"] == ["vc142"] set "VCVER=vc14"
-
 if exist "%CASROOT%\custom.bat" (
  call "%CASROOT%\custom.bat" %VCVER% %ARCH% %CASDEB%
 )
@@ -140,11 +138,7 @@ if not ["%GLES2_DIR%"] == [""]         set "PATH=%GLES2_DIR%;%PATH%"
 if not ["%TBB_DIR%"] == [""]           set "PATH=%TBB_DIR%;%PATH%"
 if not ["%VTK_DIR%"] == [""]           set "PATH=%VTK_DIR%;%PATH%"
 if not ["%FFMPEG_DIR%"] == [""]        set "PATH=%FFMPEG_DIR%;%PATH%"
-if not ["%OPENVR_DIR%"] == [""]        set "PATH=%OPENVR_DIR%;%PATH%"
-if not ["%QTDIR%"] == [""] (
-  set "PATH=%QTDIR%/bin;%PATH%"
-  set "QT_PLUGIN_PATH=%QTDIR%/plugins"
-)
+if not ["%QTDIR%"] == [""]             set "PATH=%QTDIR%/bin;%PATH%"

 rem ----- Set path to 3rd party and OCCT libraries -----
 if not "%CSF_OCCTBinPath%" == "" (
--- a/adm/templates/env.install.sh.in
+++ b/adm/templates/env.install.sh.in
@@ -8,9 +8,7 @@ if [ "${CASROOT}" == "" ]; then
 fi

 # ----- Define path to 3rdparty products -----
-if [ "${THIRDPARTY_DIR}" == "" ]; then
-  export THIRDPARTY_DIR="@3RDPARTY_DIR@"
-fi
+export THIRDPARTY_DIR="@3RDPARTY_DIR@"

 # ----- Read script arguments -----
 shopt -s nocasematch
--- a/adm/templates/env.samples.bat.in
+++ b/adm/templates/env.samples.bat.in
@@ -6,7 +6,6 @@ if exist "%~dp0custom.bat" (

 call "@INSTALL_DIR_ABSOLUTE@\@INSTALL_DIR_SCRIPT@\env.bat" %1 %2 %3
 if /I ["%1"] == ["vc141"] set "VCVER=vc141"
-if /I ["%1"] == ["vc142"] set "VCVER=vc142"
 set "BIN_DIR=win%ARCH%\%VCVER%\bind"
 set "LIB_DIR=win%ARCH%\%VCVER%\libd"

@@ -27,5 +26,3 @@ if not "%QTDIR%" == "" (
  set "PATH=%QTDIR%/bin;%PATH%"
  set "QT_QPA_PLATFORM_PLUGIN_PATH=%QTDIR%\plugins\platforms"
 )
-
-set "CSF_OCCTOverviewSampleCodePath=%~dp0..\..\OCCTOverview\code"
--- a/adm/templates/env.samples.sh.in
+++ b/adm/templates/env.samples.sh.in
@@ -20,5 +20,3 @@ export STATION=$host
 export RES_DIR=${aSamplePath}/${STATION}/res

 export PATH=${QTDIR}/bin:${PATH}
-
-export "CSF_OCCTOverviewSampleCodePath=${aSamplePath}/../../OCCTOverview/code"
--- a/adm/templates/env.sh
+++ b/adm/templates/env.sh
@@ -16,7 +16,6 @@ export HAVE_GLES2="false";
 export HAVE_ZLIB="false";
 export HAVE_LIBLZMA="false";
 export HAVE_RAPIDJSON="false";
-export HAVE_OPENVR="false";
 export HAVE_E57="false";
 export MACOSX_USE_GLX="false";
 export CSF_OPT_INC=""
@@ -107,7 +106,6 @@ if [ "$HAVE_VTK"       == "true" ]; then export CSF_OPT_CMPL="${CSF_OPT_CMPL} -D
 if [ "$HAVE_ZLIB"      == "true" ]; then export CSF_OPT_CMPL="${CSF_OPT_CMPL} -DHAVE_ZLIB"; fi
 if [ "$HAVE_LIBLZMA"   == "true" ]; then export CSF_OPT_CMPL="${CSF_OPT_CMPL} -DHAVE_LIBLZMA"; fi
 if [ "$HAVE_RAPIDJSON" == "true" ]; then export CSF_OPT_CMPL="${CSF_OPT_CMPL} -DHAVE_RAPIDJSON"; fi
-if [ "$HAVE_OPENVR"    == "true" ]; then export CSF_OPT_CMPL="${CSF_OPT_CMPL} -DHAVE_OPENVR"; fi
 if [ "$HAVE_E57"       == "true" ]; then export CSF_OPT_CMPL="${CSF_OPT_CMPL} -DHAVE_E57"; fi
 # Option to compile OCCT with X11 libs on Mac OS X
 if [ "$MACOSX_USE_GLX" == "true" ]; then export CSF_OPT_CMPL="${CSF_OPT_CMPL} -DMACOSX_USE_GLX"; fi
--- a/adm/templates/install.bat
+++ b/adm/templates/install.bat
@@ -1,38 +0,0 @@
-@echo off
-setlocal
-
-rem Setup environment
-call "%~dp0env.bat" %1 %2 %3
-
-rem Define path to project file
-set "PRJFILE=%~dp0INSTALL.vcxproj"
-
-if "%VCVER%" == "vc8" (
-  call "%VS80COMNTOOLS%/vsvars32.bat" > nul
-) else if "%VCVER%" == "vc9" (
-  call "%VS90COMNTOOLS%/vsvars32.bat" > nul
-) else if "%VCVER%" == "vc10" (
-  call "%VS100COMNTOOLS%/vsvars32.bat" > nul
-) else if "%VCVER%" == "vc11" (
-  call "%VS110COMNTOOLS%/vsvars32.bat" > nul
-) else if "%VCVER%" == "vc12" (
-  call "%VS120COMNTOOLS%/vsvars32.bat" > nul
-) else if "%VCVER%" == "vc14" (
-  call "%VS140COMNTOOLS%/vsvars32.bat" > nul
-) else if "%VCVER%" == "vc141" (
-  call "%VS141COMNTOOLS%/vsvars32.bat" > nul
-) else if "%VCVER%" == "vc142" (
-  call "%VS142COMNTOOLS%/vsvars32.bat" > nul
-) else (
-  echo Error: wrong VS identifier
-  exit /B
-)
-
-set BUILDCONFIG=Release
-if "%CASDEB%"=="i" set BUILDCONFIG=RelWithDebInfo
-if "%CASDEB%"=="d" set BUILDCONFIG=Debug
-if "%ARCH%"=="32" set PLATFORM=win32
-if "%ARCH%"=="64" set PLATFORM=x64
-
-msbuild "%PRJFILE%" /m /fl /flp:LogFile="install_%BUILDCONFIG%.log" /p:Configuration=%BUILDCONFIG% /p:Platform=%PLATFORM% /p:BuildProjectReferences=false
-endlocal
--- a/adm/templates/sample.bat
+++ b/adm/templates/sample.bat
@@ -19,7 +19,6 @@ if ["%1"] == [""] (
  echo    AndroidQt
  echo    FuncDemo
  echo    IESample
-  echo    OCCTOverview  
  echo    Tutorial
  PAUSE
  exit /B
@@ -36,8 +35,5 @@ if not exist "%EXE_PATH%" (
  exit /B
 )

-rem Set path to location where sample code is installed
-set "CSF_OCCTOverviewSampleCodePath=%CSF_OCCTSamplesPath%\OCCTOverview\code"
-
 "%EXE_PATH%"

--- a/adm/templates/sample.sh
+++ b/adm/templates/sample.sh
@@ -8,7 +8,6 @@ if [ "$1" == "" ]; then
  echo available samples:
  echo    FuncDemo
  echo    IESample
-  echo    OCCTOverview
  echo    Tutorial
 fi

@@ -32,7 +31,5 @@ if [ ! -f "$EXE_PATH" ]; then
  exit 1
 fi

-export CSF_OCCTOverviewSampleCodePath="${CSF_OCCTSamplesPath}/OCCTOverview/code"
-
 cd ${aCurrentPath}
-"$EXE_PATH"
+"$EXE_PATH"
--- a/adm/templates/template.vc10
+++ b/adm/templates/template.vc10
@@ -159,7 +159,7 @@
      <PreprocessorDefinitions>_DEBUG;$(CSF_DEFINES);%(PreprocessorDefinitions)</PreprocessorDefinitions>
    </ResourceCompile>
    <Link>
-      <AdditionalDependencies>__TKDEP_DEBUG__</AdditionalDependencies>
+      <AdditionalDependencies>__TKDEP__</AdditionalDependencies>
      <OutputFile>.\..\..\..\win32\__VCVER__\bind\__TKNAM__.dll</OutputFile>
      <SuppressStartupBanner>true</SuppressStartupBanner>
      <AdditionalLibraryDirectories>..\..\..\win32\__VCVER__\libd;$(CSF_OPT_LIB32D);%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
@@ -255,7 +255,7 @@
      <PreprocessorDefinitions>_DEBUG;$(CSF_DEFINES);%(PreprocessorDefinitions)</PreprocessorDefinitions>
    </ResourceCompile>
    <Link>
-      <AdditionalDependencies>__TKDEP_DEBUG__</AdditionalDependencies>
+      <AdditionalDependencies>__TKDEP__</AdditionalDependencies>
      <OutputFile>.\..\..\..\win64\__VCVER__\bind\__TKNAM__.dll</OutputFile>
      <SuppressStartupBanner>true</SuppressStartupBanner>
      <AdditionalLibraryDirectories>..\..\..\win64\__VCVER__\libd;$(CSF_OPT_LIB64D);%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
--- a/adm/templates/template.vc10x
+++ b/adm/templates/template.vc10x
@@ -149,7 +149,7 @@
      <PreprocessorDefinitions>_DEBUG;$(CSF_DEFINES);%(PreprocessorDefinitions)</PreprocessorDefinitions>
    </ResourceCompile>
    <Link>
-      <AdditionalDependencies>__TKDEP_DEBUG__</AdditionalDependencies>
+      <AdditionalDependencies>__TKDEP__</AdditionalDependencies>
      <SuppressStartupBanner>true</SuppressStartupBanner>
      <AdditionalLibraryDirectories>..\..\..\win32\__VCVER__\libd;$(CSF_OPT_LIB32D);%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
      <GenerateDebugInformation>true</GenerateDebugInformation>
@@ -238,7 +238,7 @@
      <PreprocessorDefinitions>_DEBUG;$(CSF_DEFINES);%(PreprocessorDefinitions)</PreprocessorDefinitions>
    </ResourceCompile>
    <Link>
-      <AdditionalDependencies>__TKDEP_DEBUG__</AdditionalDependencies>
+      <AdditionalDependencies>__TKDEP__</AdditionalDependencies>
      <SuppressStartupBanner>true</SuppressStartupBanner>
      <AdditionalLibraryDirectories>..\..\..\win64\__VCVER__\libd;$(CSF_OPT_LIB64D);%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
      <GenerateDebugInformation>true</GenerateDebugInformation>
--- a/adm/upgrade.dat
+++ b/adm/upgrade.dat
@@ -71,7 +71,6 @@ BOPTools::MapShapesAndAncestors TopExp::MapShapesAndAncestors
 BOPCol_Box2DBndTreeSelector BOPTools_BoxSelector<Bnd_Box2d>
 BiTgte_DataMapOfShapeBox TopTools_DataMapOfShapeBox
 CDM_MessageDriver Message_Messenger
-Message_ProgressSentry Message_ProgressScope

 [tcollection]
 AdvApp2Var_SequenceOfNode
--- a/dox/FILES_HTML.txt
+++ b/dox/FILES_HTML.txt
@@ -5,56 +5,54 @@
 # The order of files in this list determines order of top-level pages
 # in the generated documentation.

-introduction/introduction.md
+overview/overview.md

-samples/samples.md
 ../samples/mfc/standard/ReadMe.md
 ../samples/CSharp/ReadMe.md
 ../samples/CSharp/ReadMe_D3D.md
+
 ../samples/qt/AndroidQt/ReadMe.md
-../samples/qt/OCCTOverview/ReadMe.md
 ../samples/java/jniviewer/ReadMe.md
 ../samples/ios/UIKitSample/ReadMe.md
-../samples/webgl/ReadMe.md
-samples/ocaf.md
-samples/ocaf_func.md
-samples/draw_scripts.md

 tutorial/tutorial.md

-build/build_upgrade.md
-build/build_occt/building_occt.md
-build/build_3rdparty/building_3rdparty.md
-build/build_documentation/building_documentation.md
-
-debug/debug.md
-upgrade/upgrade.md
+technical_overview/technical_overview.md

 user_guides/user_guides.md
 user_guides/foundation_classes/foundation_classes.md
 user_guides/modeling_data/modeling_data.md
 user_guides/modeling_algos/modeling_algos.md
-user_guides/mesh/mesh.md
+user_guides/boolean_operations/boolean_operations.md
 user_guides/shape_healing/shape_healing.md
 user_guides/visualization/visualization.md
 user_guides/iges/iges.md
 user_guides/step/step.md
 user_guides/xde/xde.md
 user_guides/ocaf/ocaf.md
+user_guides/tobj/tobj.md
 user_guides/draw_test_harness/draw_test_harness.md
 user_guides/inspector/inspector.md
+user_guides/brep_wp/brep_wp.md
 user_guides/vis/vis.md

-specification/specification.md
-specification/boolean_operations/boolean_operations.md
-specification/brep_format.md
-specification/pbr_math.md
+dev_guides/dev_guides.md
+dev_guides/documentation/documentation.md
+dev_guides/contribution/coding_rules.md
+dev_guides/contribution_workflow/contribution_workflow.md
+dev_guides/git_guide/git_guide.md
+dev_guides/tests/tests.md
+dev_guides/debug/debug.md
+dev_guides/upgrade/upgrade.md

-contribution/contribution.md
-contribution/documentation/documentation.md
-contribution/coding_rules.md
-contribution/contribution_workflow/contribution_workflow.md
-contribution/git_guide/git_guide.md
-contribution/tests/tests.md
+dev_guides/building/building.md
+dev_guides/building/3rdparty/3rdparty_windows.md
+dev_guides/building/3rdparty/3rdparty_linux.md
+dev_guides/building/3rdparty/3rdparty_osx.md
+dev_guides/building/cmake/cmake.md
+dev_guides/building/android/android.md
+dev_guides/building/code_blocks.md
+dev_guides/building/msvc.md
+dev_guides/building/xcode.md

 license.md
--- a/dox/FILES_PDF.txt
+++ b/dox/FILES_PDF.txt
@@ -4,29 +4,27 @@
 # Empty spaces are allowed.
 # Strings starting with '#' are treated as comments and ignored.

-tutorial/tutorial.md
-
-upgrade/upgrade.md
-
+user_guides/brep_wp/brep_wp.md
 user_guides/foundation_classes/foundation_classes.md
+user_guides/iges/iges.md
 user_guides/modeling_data/modeling_data.md
 user_guides/modeling_algos/modeling_algos.md
-user_guides/mesh/mesh.md
+user_guides/boolean_operations/boolean_operations.md
+user_guides/shape_healing/shape_healing.md
 user_guides/ocaf/ocaf.md
-user_guides/visualization/visualization.md
-user_guides/vis/vis.md
-user_guides/iges/iges.md
 user_guides/step/step.md
-user_guides/xde/xde.md
-user_guides/inspector/inspector.md
 user_guides/draw_test_harness/draw_test_harness.md
+user_guides/inspector/inspector.md
+user_guides/tobj/tobj.md
+user_guides/visualization/visualization.md
+user_guides/xde/xde.md
+user_guides/vis/vis.md

-contribution/contribution_workflow/contribution_workflow.md
-contribution/documentation/documentation.md
-contribution/coding_rules.md
-contribution/git_guide/git_guide.md
-contribution/tests/tests.md
+dev_guides/contribution_workflow/contribution_workflow.md
+dev_guides/documentation/documentation.md
+dev_guides/contribution/coding_rules.md
+dev_guides/git_guide/git_guide.md
+dev_guides/tests/tests.md
+dev_guides/upgrade/upgrade.md

-specification/boolean_operations/boolean_operations.md
-specification/brep_format.md
-specification/pbr_math.md
+tutorial/tutorial.md
--- a/dox/build/build_3rdparty/building_3rdparty.md
+++ b/dox/build/build_3rdparty/building_3rdparty.md
@@ -1,633 +0,0 @@
- Build 3rd-parties {#build_upgrade_building_3rdparty}
-==============================================
-@tableofcontents
-
-On Windows, the easiest way to install third-party libraries is to download archive with pre-built binaries from https://opencascade.com/content/3rd-party-components.
-On Linux and OS X, it is recommended to use the version installed in the system natively.
-
-@section dev_guides__building_3rdparty_win_1 Windows
-
-This document presents guidelines for building third-party products used by Open CASCADE Technology (OCCT) and samples on Windows platform. It is assumed that you are already familiar with MS Visual Studio / Visual C++. 
-
-You need to use the same version of MS Visual Studio for building all third-party products and OCCT itself, in order to receive a consistent set of run-time binaries. 
-
-The links for downloading the third-party products are available at https://opencascade.com/content/3rd-party-components.
-
-There are two types of third-party products used  by OCCT: 
-
-* Mandatory  products: 
-	* Tcl/Tk 8.5 -- 8.6;
-	* FreeType 2.4.10 -- 2.5.3.
-* Optional  products:
-	* TBB 3.x -- 4.x;
-	* FreeImage 3.14.1 -- 3.16.0;
-	* VTK 6.1.0.
-
-It is recommended to create a separate new folder on your workstation, where you will unpack the downloaded archives of the third-party  products, and where you will build these products (for example, *c:\\occ3rdparty*). 
-
-Further in this document, this folder is referred to as *3rdparty*. 
-
-@subsection dev_guides__building_3rdparty_win_2 Tcl/Tk
-
-Tcl/Tk is required for DRAW test harness.
-
-**Installation from sources: Tcl**
-  
-Download the necessary archive from https://www.tcl.tk/software/tcltk/download.html and unpack it.
-  
-1. In the *win* sub-directory, edit file *buildall.vc.bat*:
-
-   * Edit the line "call ... vcvars32.bat" to have correct path to the version of Visual Studio to be used for building, for instance:
-
-         call "%VS80COMNTOOLS%\vsvars32.bat"
-
-     If you are building 64-bit version, set environment accordingly, e.g.:
-
-         call "%VS80COMNTOOLS%\..\..\VC\vcvarsall.bat" amd64
-     
-   * Define variable *INSTALLDIR* pointing to directory where Tcl/Tk will be installed, e.g.:
-
-         set INSTALLDIR=D:\OCCT\3rdparty\tcltk-86-32
-
-   * Add option *install* to the first command line calling *nmake*:
-
-         nmake -nologo -f makefile.vc release htmlhelp install %1
-
-   * Remove second call to *nmake* (building statically linked executable)
-
-2. Edit file *rules.vc* replacing line 
-
-       SUFX	    = tsgx
-
-   by
-
-       SUFX	    = sgx
-
-   This is to avoid extra prefix 't' in the library name, which is not recognized by default by OCCT build tools.
-
-
-3. By default, Tcl uses dynamic version of run-time library (MSVCRT), which must be installed on the system where Tcl will be used.
-   You may wish to link Tcl library with static version of run-time to avoid this dependency.
-   For that:
-
-   * Edit file *makefile.vc* replacing strings "crt = -MD" by "crt = -MT"
-
-   * Edit source file *tclMain.c* (located in folder *generic*) commenting out forward declaration of function *isatty()*.
-
-
-4. In the command prompt, run *buildall.vc.bat*
-
-   You might need to run this script twice to have *tclsh* executable installed; check subfolder *bin* of specified installation path to verify this.
-
-5. For convenience of use, we recommend making a copy of *tclsh* executable created in subfolder *bin* of *INSTALLDIR* and named with Tcl version number suffix, as *tclsh.exe* (with no suffix)
-
-       > cd D:\OCCT\3rdparty\tcltk-86-32\bin
-       > cp tclsh86.exe tclsh.exe
-
-**Installation from sources: Tk**
-  
-Download the necessary archive from https://www.tcl.tk/software/tcltk/download.html and unpack it.
-
-Apply the same steps as described for building Tcl above, with the same INSTALLDIR.
-Note that Tk produces its own executable, called *wish*. 
-
-You might need to edit default value of *TCLDIR* variable defined in *buildall.vc.bat* (should be not necessary if you unpack both Tcl and Tk sources in the same folder).
-
-@subsection dev_guides__building_3rdparty_win_2_2 FreeType
-
-FreeType is required for text display in a 3D viewer. You can download its sources from https://sourceforge.net/projects/freetype/files/
-
-### The building procedure
-
-1. Unpack the downloaded archive of FreeType product into the *3rdparty*  folder. As a result, you will get a folder named, for example, *3rdparty\\freetype-2.4.10*.  Further in this document, this folder is referred to as *freetype*. 
-   
-2. Open the solution file *freetype\\builds\\win32\\vc20xx\\freetype.sln*  in Visual Studio. Here *vc20xx* stands for your version of Visual Studio. 
-
-3. Select the configuration to build: either Debug or Release. 
-
-4. Build  the *freetype* project. 
-
-   As a result, you will get a  freetype import library (.lib) in the *freetype\\obj\\win32\\vc20xx*  folder.  
-
-
-5. If you build FreeType for a 64 bit platform, select in the main menu **Build - Configuration Manager**  and add *x64* platform to the solution configuration by copying the settings from Win32 platform: 
-
-   @figure{/build/build_3rdparty/images/3rdparty_image001.png}
-
-   Update the value of the Output File for  x64 configuration: 
-
-   @figure{/build/build_3rdparty/images/3rdparty_image003.png}
-
-   Build the *freetype* project. 
-
-   As a result, you will obtain a 64 bit import library (.lib) file in the *freetype\\x64\\vc20xx*  folder. 
-
-   To build FreeType as a dynamic library (.dll) follow steps 6, 7 and 8 of this procedure. 
-
-6. Open menu Project-> Properties-> Configuration  Properties-> General and change option **Configuration Type** to *Dynamic  Library (.dll)*. 
-7. Edit file *freetype\\include\\freetype\\config\\ftoption.h*:  
-  
-   in line 255, uncomment the definition of macro *FT_EXPORT* and change it as follows: 
-
-       #define FT_EXPORT(x)   __declspec(dllexport) x 
-
-8. Build  the *freetype* project. 
-
-   As a result, you will obtain the files of the import  library (.lib) and the dynamic library (.dll)   in folders <i>freetype  \\objs\\release</i> or <i>\\objs\\debug </i>. 
-   
-   If you build for a 64 bit platform, follow step 5 of the procedure. 
-
-   To facilitate the use of FreeType libraries in OCCT with minimal adjustment of build procedures, it is recommended to copy the include files and libraries of FreeType into a separate folder, named according to the pattern: *freetype-compiler-bitness-building mode*, where: 
-   * **compiler** is *vc8* or *vc9* or *vc10* or *vc11*; 
-   * **bitness**  is *32* or *64*;
-   * **building mode** is *opt* (for Release) or *deb* (for Debug). 
-    
-   The *include* subfolder should be copied as is, while libraries should be renamed to *freetype.lib* and *freetype.dll* (suffixes removed) and placed to subdirectories *lib *and  *bin*, respectively. If the Debug configuration is built, the Debug libraries should be put into subdirectories *libd* and *bind*. 
-
-
-@subsection dev_guides__building_3rdparty_win_3_1 TBB
-
-This third-party product is installed with binaries 
-from the archive that can be downloaded from https://github.com/intel/tbb.
-Go to the **Download** page, find the  release version you need  (e.g. *tbb30_018oss*) and pick the archive for Windows  platform. 
-
-Unpack the downloaded  archive of TBB product into the *3rdparty* folder. 
-
-Further in this document,  this folder is referred to as *tbb*. 
-
-@subsection dev_guides__building_3rdparty_win_3_3 FreeImage
-
-This third-party product should be built as a dynamically loadable library (.dll file). 
-You can download its sources from 
-https://sourceforge.net/projects/freeimage/files/Source%20Distribution/
-
-### The building procedure: 
-
-1. Unpack the  downloaded archive of FreeImage product into *3rdparty* folder. 
-  
-   As a result, you should have a folder named *3rdparty\\FreeImage*. 
-  
-   Rename it according to the rule: *freeimage-platform-compiler-building  mode*, where 
-   
-   * **platform**  is *win32* or *win64*; 
-   * **compiler**  is *vc8* or *vc9* or *vc10* or *vc11*; 
-   * **building  mode** is *opt* (for release) or *deb* (for debug) 
-
-   Further in this  document, this folder is referred to as *freeimage*. 
-
-2. Open the solution file *freeimage\\FreeImage.*.sln* in your Visual Studio. 
-  
-   If you use a Visual Studio version higher than VC++ 2008, apply conversion of the workspace. 
-   Such conversion should be suggested automatically by Visual  Studio. 
-    
-3. Select a  configuration to build. 
-
-   - Choose **Release**  if you are building Release binaries. 
-   - Choose **Debug** if you are building  Debug binaries. 
-
-   *Note:* 
-
-   If you want to  build a debug version of FreeImage binaries then you need to rename the following files in FreeImage and FreeimagePlus projects:
-   
-   Project -> Properties -> Configuration Properties -> Linker -> General -> Output File
-
-       FreeImage*d*.dll  to FreeImage.dll 
-       FreeImagePlus*d*.dll to FreeImagePlus.dll 
-
-   Project -> Properties -> Configuration Properties -> Linker -> Debugging-> Generate Program Database File
-
-       FreeImage*d*.pdb  to FreeImage.pdb 
-       FreeImagePlus*d*.pdb to FreeImagePlus.pdb 
-
-   Project -> Properties -> Configuration Properties -> Linker -> Advanced-Import Library
-
-       FreeImage*d*.lib  to FreeImage.lib 
-       FreeImagePlus*d*.lib  to FreeImagePlus.lib 
-
-   Project -> Properties -> Configuration Properties -> Build Events -> Post -> Build Event -> Command Line 
-
-       FreeImage*d*.dll     to FreeImage.dll 
-       FreeImage*d*.lib     to FreeImage.lib 
-       FreeImagePlus*d*.dll to FreeImagePlus.dll 
-       FreeImagePlus*d*.lib to FreeImagePlus.lib 
-
-   Additionally, rename in project FreeImagePlus 
-   
-   Project -> Properties -> Configuration  Properties -> Linker -> Input -> Additional Dependencies 
-
-       from FreeImage*d*.lib to FreeImage.lib 
-
-4. Select a platform to build. 
-
-   - Choose *Win32* if you are building for a 32 bit platform. 
-   - Choose *x64* if you are building for a 64 bit platform. 
-
-5. Start the building process. 
-
-   As a result, you should have the  library files of FreeImage product  in *freeimage\\Dist* folder (*FreeImage.dll* and *FreeImage.lib*) and in *freeimage\\Wrapper\\FreeImagePlus\\dist* folder (*FreeImagePlus.dll* and *FreeImagePlus.lib*).
-
-@subsection dev_guides__building_3rdparty_win_3_4 VTK
-
-VTK is an open-source, freely available software system for 3D computer graphics, image processing and visualization. VTK Integration Services component provides adaptation functionality for visualization of OCCT topological shapes by means of VTK library.
-
-### The building procedure:
-
-1. Download the necessary archive from https://www.vtk.org/VTK/resources/software.html and unpack it into *3rdparty* folder.
-
-   As a result, you will get a folder named, for example, <i>3rdparty\VTK-6.1.0.</i>
-
-   Further in this document, this folder is referred to as *VTK*.
-
-2. Use CMake to generate VS projects for building the library:
-   - Start CMake-GUI and select VTK folder as source path, and the folder of your choice for VS project and intermediate build data.
-   - Click **Configure**.
-   - Select the VS version to be used from the ones you have installed (we recommend using VS 2010) and the architecture (32 or 64-bit).
-   - Generate VS projects with default CMake options. The open solution *VTK.sln* will be generated in the build folder.
-
-3. Build project VTK in Release mode.
-
-
-@section build_3rdparty_linux Linux
-
-This document presents additional guidelines for building third-party 
-products used by Open CASCADE Technology and samples on Linux platform. 
-
-The links for downloading the third-party products are available on the web site at 
-https://opencascade.com/content/3rd-party-components.
-
-There are two types of third-party products, which are  necessary to build OCCT: 
-  
-* Mandatory  products: 
-	* Tcl/Tk 8.5 - 8.6;  
-	* FreeType 2.4.10 - 2.5.3;
-* Optional  products: 
-	* TBB 3.x - 4.x;
-	* FreeImage 3.14.1 - 3.16.0;
-	* VTK 6.1.0.
-
-
-@subsection dev_guides__building_3rdparty_linux_2_1 Tcl/Tk 
-
-Tcl/Tk is required for DRAW test harness. 
-
-**Installation from sources: Tcl**
-  
-Download the necessary archive from https://www.tcl.tk/software/tcltk/download.html and unpack it.
-  
-1. Enter the unix sub-directory of the directory where the Tcl source  files are located <i>(TCL_SRC_DIR)</i>. 
-
-       cd TCL_SRC_DIR/unix   
-
-2. Run the *configure* command:
-
-       configure --enable-gcc  --enable-shared --enable-threads --prefix=TCL_INSTALL_DIR   
-
-   For a 64 bit platform also add <i>--enable-64bit</i> option to the command line. 
-  
-3. If the configure command has finished successfully, start  the building process:
-  
-       make   
-
-4. If building is finished successfully, start the installation of Tcl. 
-   All binary and service files of the product will be copied to the directory defined by *TCL_INSTALL_DIR* 
-
-       make install   
-
-**Installation from sources: Tk**
-  
-Download the necessary archive from https://www.tcl.tk/software/tcltk/download.html and unpack it.
-  
-1. Enter the unix sub-directory of the directory where the Tk source files are located <i>(TK_SRC_DIR)</i> 
-
-       cd TK_SRC_DIR/unix   
-
-2. Run the configure command, where <i>TCL_LIB_DIR</i> is *TCL_INSTALL_DIR/lib*.
-
-       configure --enable-gcc  --enable-shared --enable-threads --with-tcl=TCL_LIB_DIR  --prefix=TK_INSTALL_DIR   
-
-   For a 64 bit platform also add <i>--enable-64bit</i> option to the  command line. 
-
-3. If the configure command has finished successfully, start the building process: 
-
-       make   
-
-4. If the building has finished successfully, start the installation of Tk. 
-   All binary and service files of the product will be copied 
-   to the directory defined by *TK_INSTALL_DIR* (usually it is *TCL_INSTALL_DIR*) 
-
-       make install   
-
-@subsection dev_guides__building_3rdparty_linux_2_2 FreeType
-
-FreeType is required for text display in the 3D viewer. 
-Download the necessary archive from https://sourceforge.net/projects/freetype/files/ and unpack it.
-  
-1. Enter the directory where the source files of FreeType  are located <i>(FREETYPE_SRC_DIR)</i>. 
-
-       cd FREETYPE_SRC_DIR   
-
-2. Run the *configure* command: 
-  
-       configure  --prefix=FREETYPE_INSTALL_DIR   
-
-   For a 64 bit platform also add <i>CFLAGS='-m64 -fPIC'  CPPFLAGS='-m64 -fPIC'</i> option to the command line. 
-    
-3. If the *configure* command has finished successfully, start  the building process: 
-
-       make   
-
-4. If the building has finished successfully, start the installation of FreeType. 
-   All binary and service files of the product will be copied to the directory defined by *FREETYPE_INSTALL_DIR* 
-    
-       make install   
-
-    
-@subsection dev_guides__building_3rdparty_linux_3_1 TBB
-
-This third-party product is  installed with binaries from the archive that can be downloaded from https://github.com/intel/tbb.
-Go to the **Download** page, find the  release version you need and pick the archive for Linux platform.
-To install, unpack the downloaded archive of TBB product.
-
-@subsection dev_guides__building_3rdparty_linux_3_3 FreeImage
-
-Download the necessary archive from https://sourceforge.net/projects/freeimage/files/Source%20Distribution/
-and unpack it. The directory with unpacked sources is  further referred to as *FREEIMAGE_SRC_DIR*. 
-  
-1. Modify *FREEIMAGE_SRC_DIR/Source/OpenEXR/Imath/ImathMatrix.h*: 
-   In line 60 insert the following: 
-
-       #include string.h   
-
-2. Enter the directory where the source files of FreeImage are located <i>(FREEIMAGE_SRC_DIR)</i>. 
-  
-       cd FREEIMAGE_SRC_DIR   
-
-3. Run the building process 
-  
-       make   
-
-4. Run the installation process 
-
-   a. If you have the permission to write into directories <i>/usr/include</i> and <i>/usr/lib</i>, run the following command: 
-
-          make install   
-   b. If you do not have this permission, you need to modify file *FREEIMAGE_SRC_DIR/Makefile.gnu*: 
-  
-      Change lines 7-9 from:
-  
-          DESTDIR ?= /   
-          INCDIR  ?= $(DESTDIR)/usr/include   
-          INSTALLDIR  ?= $(DESTDIR)/usr/lib   
-
-      to: 
-
-          DESTDIR  ?= $(DESTDIR)   
-          INCDIR  ?= $(DESTDIR)/include   
-          INSTALLDIR  ?= $(DESTDIR)/lib   
-
-      Change lines 65-67 from: 
-
-          install  -m 644 -o root -g root $(HEADER) $(INCDIR)   
-          install  -m 644 -o root -g root $(STATICLIB) $(INSTALLDIR)   
-          install  -m 755 -o root -g root $(SHAREDLIB) $(INSTALLDIR)   
-  
-      to:
-
-          install  -m 755 $(HEADER) $(INCDIR)   
-          install  -m 755 $(STATICLIB) $(INSTALLDIR)   
-          install  -m 755 $(SHAREDLIB) $(INSTALLDIR)
-
-      Change line 70 from: 
-
-          ldconfig
-
-      to:
-  
-          \#ldconfig   
-    
-   Then run the installation process by the following command: 
-
-        make DESTDIR=FREEIMAGE_INSTALL_DIR  install   
-
-5. Clean temporary files
-
-        make clean
-
-@subsection dev_guides__building_3rdparty_linux_3_4 VTK
-
-You can download VTK sources from https://www.vtk.org/VTK/resources/software.html
-
-### The building procedure:
-
-Download the necessary archive from https://www.vtk.org/VTK/resources/software.html and unpack it.
-
-1. Install or build *cmake* product from the source file.
-2. Start *cmake* in GUI mode with the directory where the source files of *VTK* are located:
-
-       ccmake VTK_SRC_DIR
-
-   * Press <i>[c]</i> to make the  initial configuration
-   * Define the necessary options in *VTK_INSTALL_PREFIX*
-   * Press <i>[c]</i> to make the final  configuration
-   * Press <i>[g]</i> to generate  Makefile and exit
-
-3. Start the building of VTK:
-
-       make
-
-4. Start the installation of VTK. Binaries will be installed according to the *VTK_INSTALL_PREFIX* option.
-
-       make install
-
-@subsection dev_guides__building_3rdparty_linux_4 Installation From Official Repositories
-
-**Debian-based distributives**
-
-All 3rd-party products required for building of  OCCT could be installed
-from official repositories. You may install them from  console using apt-get utility:
-
-    sudo apt-get install tcllib tklib tcl-dev tk-dev libfreetype-dev libxt-dev libxmu-dev libxi-dev libgl1-mesa-dev libglu1-mesa-dev libfreeimage-dev libtbb-dev
-
-To launch binaries built with WOK you need to install C shell and 32-bit libraries on x86_64 distributives:
-
-    # you may need to add i386 if not done already by command "dpkg --add-architecture i386"
-    sudo apt-get install csh libstdc++6:i386 libxt6:i386 libxext6:i386 libxmu6:i386
-
-Building is possible with C++ compliant compiler:
-
-    sudo apt-get install g++
-
-@section build_3rdparty_macos Mac OS X
-
-This document presents additional guidelines for building third-party products 
-used by Open CASCADE Technology and samples on Mac OS X platform (10.6.4  and later). 
-
-The links for downloading the third-party products are available at https://opencascade.com/content/3rd-party-components.
-
-There are two types of third-party products, which are  necessary to build OCCT: 
-  
-* Mandatory  products: 
-	* Tcl/Tk 8.5 - 8.6;
-	* FreeType 2.4.10 - 2.5.3.
-* Optional  products: 
-	* TBB 3.x - 4.x;
-	* FreeImage 3.14.1 - 3.16.0
-  
-
-@subsection dev_guides__building_3rdparty_osx_2_1 Tcl/Tk 8.5 
-
-Tcl/Tk is required for DRAW test harness. Version 8.5 or  8.6 can be used with OCCT. 
-
-**Installation from sources: Tcl 8.5**
-
-Download the necessary archive from https://www.tcl.tk/software/tcltk/download.html and unpack it.
-
-1. Enter the *macosx* sub-directory of the directory where the Tcl source files are located <i>(TCL_SRC_DIR)</i>. 
-
-       cd TCL_SRC_DIR/macosx   
-
-2. Run the *configure* command 
-
-       configure --enable-gcc  --enable-shared --enable-threads --prefix=TCL_INSTALL_DIR   
-
-   For a 64 bit platform also add <i>--enable-64bit</i> option to the command line. 
-
-3. If the *configure* command has finished successfully, start the building process 
-
-       make   
-  
-4. If building is finished successfully, start the installation of Tcl. 
-   All binary and service files of the product will be copied to the directory defined by *TCL_INSTALL_DIR*. 
-
-       make install   
-
-**Installation from sources: Tk 8.5**
-
-Download the necessary archive from https://www.tcl.tk/software/tcltk/download.html and unpack it.
-
-1. Enter the *macosx* sub-directory of the directory where the  source files of Tk are located <i>(TK_SRC_DIR)</i>. 
-
-       cd TK_SRC_DIR/macosx   
-
-2. Run the *configure* command, where TCL_LIB_DIR is  TCL_INSTALL_DIR/lib 
-
-       configure --enable-gcc --enable-shared --enable-threads --with-tcl=TCL_LIB_DIR --prefix=TK_INSTALL_DIR   
-
-	For a 64 bit platform also add <i>--enable-64bit</i> option to the  command line. 
-
-3. If the *configure* command has finished successfully, start the building process:
-
-       make   
-
-4. If the building has finished successfully, start the  installation of Tk. All binary and service files of the product will be copied to the directory defined by *TK_INSTALL_DIR* (usually it is TCL_INSTALL_DIR) 
-
-       make install   
-
-@subsection dev_guides__building_3rdparty_osx_2_2 FreeType 2.4.10
-  
-FreeType is required for text display in the 3D viewer. 
-
-Download the necessary archive from https://sourceforge.net/projects/freetype/files/ and unpack it.
-
-1. Enter the directory where the source files of FreeType  are located <i>(FREETYPE_SRC_DIR)</i>. 
-
-       cd FREETYPE_SRC_DIR   
-
-2. Run the *configure* command 
-  
-       configure  --prefix=FREETYPE_INSTALL_DIR   
-
-   For a 64 bit platform also add <i>CFLAGS='-m64 -fPIC'  CPPFLAGS='-m64 -fPIC'</i> option to the command line. 
-
-3. If the *configure* command has finished successfully, start  the building process 
-
-       make   
-
-4. If building has finished successfully, start the installation of FreeType. 
-   All binary and service files of the product will be copied to the directory defined by *FREETYPE_INSTALL_DIR*.
-
-       make install   
-    
-@subsection dev_guides__building_3rdparty_osx_3_1 TBB 3.x or 4.x
-
-This third-party product is installed with binaries from the archive 
-that can be downloaded from https://github.com/intel/tbb.
-Go to the **Download** page, find the release version you need (e.g. *tbb30_018oss*) 
-and  pick the archive for Mac OS X platform. 
-To install, unpack the downloaded archive of TBB 3.0 product (*tbb30_018oss_osx.tgz*).
-
-@subsection dev_guides__building_3rdparty_osx_3_3 FreeImage 3.14.1 or 3.15.x
-
-Download the necessary archive from 
-https://sourceforge.net/projects/freeimage/files/Source%20Distribution/
-and unpack it. The directory with unpacked sources is  further referred to as *FREEIMAGE_SRC_DIR*.  
-
-Note that for building FreeImage on Mac OS X 10.7 you should replace *Makefile.osx* 
-in *FREEIMAGE_SRC_DIR* by the corrected file, which you can find in attachment to issue #22811 in OCCT Mantis bug tracker 
-(https://tracker.dev.opencascade.org/file_download.php?file_id=6937&type=bug).
-
-1. If you build FreeImage 3.15.x you can skip this  step. 
-   Modify <i>FREEIMAGE_SRC_DIR/Source/OpenEXR/Imath/ImathMatrix.h:</i> 
-  
-   In line 60 insert the following: 
-
-       #include string.h 
-
-   Modify <i>FREEIMAGE_SRC_DIR/Source/FreeImage/PluginTARGA.cpp:</i> 
-  
-   In line 320 replace: 
-
-       SwapShort(value); 
-
-   with: 
-
-       SwapShort(&value); 
-
-2. Enter the directory where the source files of FreeImage  are located <i>(FREEIMAGE_SRC_DIR)</i>. 
-
-       cd FREEIMAGE_SRC_DIR 
-
-3. Run the building process 
-
-       make   
-
-4. Run the installation process 
-   
-   1. If you have the permission to write into <i>/usr/local/include</i>  and <i>/usr/local/lib</i> directories, run the following command: 
-
-          make install   
-
-   2. If you do not have this permission, you need to modify file *FREEIMAGE_SRC_DIR/Makefile.osx*: 
-
-      Change line 49 from:     
-
-          PREFIX ?= /usr/local
-
-      to:
-   
-          PREFIX  ?= $(PREFIX) 
-
-      Change lines 65-69 from: 
-
-          install -d -m 755 -o  root -g wheel $(INCDIR) $(INSTALLDIR) 
-          install  -m 644 -o root -g wheel $(HEADER) $(INCDIR) 
-          install  -m 644 -o root -g wheel $(SHAREDLIB) $(STATICLIB) $(INSTALLDIR) 
-          ranlib  -sf $(INSTALLDIR)/$(STATICLIB) 
-          ln  -sf $(SHAREDLIB) $(INSTALLDIR)/$(LIBNAME) 
-    
-      to: 
-
-          install  -d $(INCDIR) $(INSTALLDIR) 
-          install  -m 755 $(HEADER) $(INCDIR) 
-          install  -m 755 $(STATICLIB) $(INSTALLDIR) 
-          install  -m 755 $(SHAREDLIB) $(INSTALLDIR) 
-          ln  -sf $(SHAREDLIB) $(INSTALLDIR)/$(VERLIBNAME)  
-          ln  -sf $(VERLIBNAME) $(INSTALLDIR)/$(LIBNAME)
-
-      Then run the installation process by the following command: 
-  
-          make PREFIX=FREEIMAGE_INSTALL_DIR  install 
-  
-5. Clean temporary files 
-  
-       make clean 
--- a/dox/build/build_3rdparty/images/genconf_linux.png
+++ b/dox/build/build_3rdparty/images/genconf_linux.png
--- a/dox/build/build_3rdparty/images/genconf_windows.png
+++ b/dox/build/build_3rdparty/images/genconf_windows.png
--- a/dox/build/build_documentation/building_documentation.md
+++ b/dox/build/build_documentation/building_documentation.md
@@ -1,19 +0,0 @@
-Build Documentation {#build_upgrade__building_documentation}
-=================
-
-To generate HTML documentation from sources contained in *dox* subdirectory, 
-you need to have Tcl and Doxygen 1.8.5 (or above) installed on your system.
-
-Use script **gendoc** (batch file on Windows, shell script on Linux / Mac OSX) to generate documentation.
-
-To generate Overview documentation:
-
-    cmd> gendoc -overview
-
-To generate Reference manual:
-
-    cmd> gendoc -refman
-
-Run this command without arguments to get help on supported options.
-
-See @ref occt_contribution__documentation for prerequisites and details on OCCT documentation system.
--- a/dox/build/build_occt/images/android_image001.png
+++ b/dox/build/build_occt/images/android_image001.png
--- a/dox/build/build_occt/images/android_image002.png
+++ b/dox/build/build_occt/images/android_image002.png
--- a/dox/build/build_occt/images/android_image003.png
+++ b/dox/build/build_occt/images/android_image003.png
--- a/dox/build/build_occt/images/android_image004.png
+++ b/dox/build/build_occt/images/android_image004.png
--- a/dox/build/build_occt/images/android_image005.png
+++ b/dox/build/build_occt/images/android_image005.png
--- a/dox/build/build_occt/images/android_image006.png
+++ b/dox/build/build_occt/images/android_image006.png
--- a/dox/build/build_occt/images/genconf_linux.png
+++ b/dox/build/build_occt/images/genconf_linux.png
--- a/dox/build/build_occt/images/genconf_osx.png
+++ b/dox/build/build_occt/images/genconf_osx.png
--- a/dox/build/build_occt/images/genconf_windows.png
+++ b/dox/build/build_occt/images/genconf_windows.png
--- a/dox/build/build_upgrade.md
+++ b/dox/build/build_upgrade.md
@@ -1,10 +0,0 @@
-Build, Debug and Upgrade {#build_upgrade}
-=================
-
-This chapter contains the detailed infomation about building, debugging and upgrade procedures:
-
-* @subpage build_upgrade__building_occt
-* @subpage build_upgrade_building_3rdparty
-* @subpage build_upgrade__building_documentation
-* @subpage occt__debug
-* @subpage occt__upgrade
--- a/dox/contribution/contribution.md
+++ b/dox/contribution/contribution.md
@@ -1,10 +0,0 @@
-Contribution {#contribution}
-============
-
-This chapter contains the detailed infomation about contribution procedure:
-
-* @subpage occt_contribution__contribution_workflow
-* @subpage occt_contribution__git_guide
-* @subpage occt_contribution__coding_rules
-* @subpage occt_contribution__tests
-* @subpage occt_contribution__documentation
--- a/dox/dev_guides/building/3rdparty/3rdparty_linux.md
+++ b/dox/dev_guides/building/3rdparty/3rdparty_linux.md
@@ -0,0 +1,217 @@
+ Building 3rd-party libraries on Linux {#occt_dev_guides__building_3rdparty_linux}
+=========
+
+@tableofcontents 
+
+@section dev_guides__building_3rdparty_linux_1 Introduction
+
+This document presents additional guidelines for building third-party 
+products used by Open CASCADE Technology and samples on Linux platform. 
+
+The links for downloading the third-party products are available on the web site 
+of OPEN CASCADE SAS at 
+https://www.opencascade.com/content/3rd-party-components.
+
+There are two types of third-party products, which are  necessary to build OCCT: 
+  
+* Mandatory  products: 
+	* Tcl/Tk 8.5 - 8.6;  
+	* FreeType 2.4.10 - 2.5.3;
+* Optional  products: 
+	* TBB 3.x - 4.x;
+	* FreeImage 3.14.1 - 3.16.0;
+	* VTK 6.1.0.
+
+@section dev_guides__building_3rdparty_linux_2 Building Mandatory Third-party Products
+
+@subsection dev_guides__building_3rdparty_linux_2_1 Tcl/Tk 
+
+Tcl/Tk is required for DRAW test harness. 
+
+@subsubsection dev_guides__building_3rdparty_linux_2_1_2 Installation from sources: Tcl
+  
+Download the necessary archive from https://www.tcl.tk/software/tcltk/download.html and unpack it.
+  
+1. Enter the unix sub-directory of the directory where the Tcl source  files are located <i>(TCL_SRC_DIR)</i>. 
+
+       cd TCL_SRC_DIR/unix   
+
+2. Run the *configure* command:
+
+       configure --enable-gcc  --enable-shared --enable-threads --prefix=TCL_INSTALL_DIR   
+
+   For a 64 bit platform also add <i>--enable-64bit</i> option to the command line. 
+  
+3. If the configure command has finished successfully, start  the building process:
+  
+       make   
+
+4. If building is finished successfully, start the installation of Tcl. 
+   All binary and service files of the product will be copied to the directory defined by *TCL_INSTALL_DIR* 
+
+       make install   
+
+@subsubsection dev_guides__building_3rdparty_linux_2_1_3 Installation from sources: Tk
+  
+Download the necessary archive from https://www.tcl.tk/software/tcltk/download.html and unpack it.
+  
+1. Enter the unix sub-directory of the directory where the Tk source files are located <i>(TK_SRC_DIR)</i> 
+
+       cd TK_SRC_DIR/unix   
+
+2. Run the configure command, where <i>TCL_LIB_DIR</i> is *TCL_INSTALL_DIR/lib*.
+
+       configure --enable-gcc  --enable-shared --enable-threads --with-tcl=TCL_LIB_DIR  --prefix=TK_INSTALL_DIR   
+
+   For a 64 bit platform also add <i>--enable-64bit</i> option to the  command line. 
+
+3. If the configure command has finished successfully, start the building process: 
+
+       make   
+
+4. If the building has finished successfully, start the installation of Tk. 
+   All binary and service files of the product will be copied 
+   to the directory defined by *TK_INSTALL_DIR* (usually it is *TCL_INSTALL_DIR*) 
+
+       make install   
+
+@subsection dev_guides__building_3rdparty_linux_2_2 FreeType
+
+FreeType is required for text display in the 3D viewer. 
+Download the necessary archive from https://sourceforge.net/projects/freetype/files/ and unpack it.
+  
+1. Enter the directory where the source files of FreeType  are located <i>(FREETYPE_SRC_DIR)</i>. 
+
+       cd FREETYPE_SRC_DIR   
+
+2. Run the *configure* command: 
+  
+       configure  --prefix=FREETYPE_INSTALL_DIR   
+
+   For a 64 bit platform also add <i>CFLAGS='-m64 -fPIC'  CPPFLAGS='-m64 -fPIC'</i> option to the command line. 
+    
+3. If the *configure* command has finished successfully, start  the building process: 
+
+       make   
+
+4. If the building has finished successfully, start the installation of FreeType. 
+   All binary and service files of the product will be copied to the directory defined by *FREETYPE_INSTALL_DIR* 
+    
+       make install   
+
+@section dev_guides__building_3rdparty_linux_3 Building Optional Third-party Products
+    
+@subsection dev_guides__building_3rdparty_linux_3_1 TBB
+
+This third-party product is  installed with binaries from the archive that can be downloaded from https://github.com/intel/tbb.
+Go to the **Download** page, find the  release version you need and pick the archive for Linux platform.
+To install, unpack the downloaded archive of TBB product.
+
+@subsection dev_guides__building_3rdparty_linux_3_3 FreeImage
+
+Download the necessary archive from https://sourceforge.net/projects/freeimage/files/Source%20Distribution/
+and unpack it. The directory with unpacked sources is  further referred to as *FREEIMAGE_SRC_DIR*. 
+  
+1. Modify *FREEIMAGE_SRC_DIR/Source/OpenEXR/Imath/ImathMatrix.h*: 
+   In line 60 insert the following: 
+
+       #include string.h   
+
+2. Enter the directory where the source files of FreeImage are located <i>(FREEIMAGE_SRC_DIR)</i>. 
+  
+       cd FREEIMAGE_SRC_DIR   
+
+3. Run the building process 
+  
+       make   
+
+4. Run the installation process 
+
+   a. If you have the permission to write into directories <i>/usr/include</i> and <i>/usr/lib</i>, run the following command: 
+
+          make install   
+   b. If you do not have this permission, you need to modify file *FREEIMAGE_SRC_DIR/Makefile.gnu*: 
+  
+      Change lines 7-9 from:
+  
+          DESTDIR ?= /   
+          INCDIR  ?= $(DESTDIR)/usr/include   
+          INSTALLDIR  ?= $(DESTDIR)/usr/lib   
+
+      to: 
+
+          DESTDIR  ?= $(DESTDIR)   
+          INCDIR  ?= $(DESTDIR)/include   
+          INSTALLDIR  ?= $(DESTDIR)/lib   
+
+      Change lines 65-67 from: 
+
+          install  -m 644 -o root -g root $(HEADER) $(INCDIR)   
+          install  -m 644 -o root -g root $(STATICLIB) $(INSTALLDIR)   
+          install  -m 755 -o root -g root $(SHAREDLIB) $(INSTALLDIR)   
+  
+      to:
+
+          install  -m 755 $(HEADER) $(INCDIR)   
+          install  -m 755 $(STATICLIB) $(INSTALLDIR)   
+          install  -m 755 $(SHAREDLIB) $(INSTALLDIR)
+
+      Change line 70 from: 
+
+          ldconfig
+
+      to:
+  
+          \#ldconfig   
+    
+   Then run the installation process by the following command: 
+
+        make DESTDIR=FREEIMAGE_INSTALL_DIR  install   
+
+5. Clean temporary files
+
+        make clean
+
+@subsection dev_guides__building_3rdparty_linux_3_4 VTK
+
+You can download VTK sources from https://www.vtk.org/VTK/resources/software.html
+
+### The building procedure:
+
+Download the necessary archive from https://www.vtk.org/VTK/resources/software.html and unpack it.
+
+1. Install or build *cmake* product from the source file.
+2. Start *cmake* in GUI mode with the directory where the source files of *VTK* are located:
+
+       ccmake VTK_SRC_DIR
+
+   * Press <i>[c]</i> to make the  initial configuration
+   * Define the necessary options in *VTK_INSTALL_PREFIX*
+   * Press <i>[c]</i> to make the final  configuration
+   * Press <i>[g]</i> to generate  Makefile and exit
+
+3. Start the building of VTK:
+
+       make
+
+4. Start the installation of VTK. Binaries will be installed according to the *VTK_INSTALL_PREFIX* option.
+
+       make install
+
+@section dev_guides__building_3rdparty_linux_4 Installation From Official Repositories
+
+@subsection dev_guides__building_3rdparty_linux_4_1 Debian-based distributives
+
+All 3rd-party products required for building of  OCCT could be installed
+from official repositories. You may install them from  console using apt-get utility:
+
+    sudo apt-get install tcllib tklib tcl-dev tk-dev libfreetype-dev libxt-dev libxmu-dev libxi-dev libgl1-mesa-dev libglu1-mesa-dev libfreeimage-dev libtbb-dev
+
+To launch binaries built with WOK you need to install C shell and 32-bit libraries on x86_64 distributives:
+
+    # you may need to add i386 if not done already by command "dpkg --add-architecture i386"
+    sudo apt-get install csh libstdc++6:i386 libxt6:i386 libxext6:i386 libxmu6:i386
+
+Building is possible with C++ compliant compiler:
+
+    sudo apt-get install g++
--- a/dox/dev_guides/building/3rdparty/3rdparty_osx.md
+++ b/dox/dev_guides/building/3rdparty/3rdparty_osx.md
@@ -0,0 +1,182 @@
+ Building 3rd-party libraries on MacOS X {#occt_dev_guides__building_3rdparty_osx}
+==============================================
+@tableofcontents 
+
+@section dev_guides__building_3rdparty_osx_1 Introduction
+
+This document presents additional guidelines for building third-party products 
+used by Open CASCADE Technology and samples on Mac OS X platform (10.6.4  and later). 
+
+The links for downloading the third-party products are available 
+on the web site of OPEN CASCADE SAS at https://www.opencascade.com/content/3rd-party-components.
+
+There are two types of third-party products, which are  necessary to build OCCT: 
+  
+* Mandatory  products: 
+	* Tcl/Tk 8.5 - 8.6;
+	* FreeType 2.4.10 - 2.5.3.
+* Optional  products: 
+	* TBB 3.x - 4.x;
+	* FreeImage 3.14.1 - 3.16.0
+  
+@section dev_guides__building_3rdparty_osx_2 Building Mandatory Third-party Products
+
+@subsection dev_guides__building_3rdparty_osx_2_1 Tcl/Tk 8.5 
+
+Tcl/Tk is required for DRAW test harness. Version 8.5 or  8.6 can be used with OCCT. 
+
+@subsubsection dev_guides__building_3rdparty_osx_2_1_2 Installation from sources: Tcl 8.5
+
+Download the necessary archive from https://www.tcl.tk/software/tcltk/download.html and unpack it.
+
+1. Enter the *macosx* sub-directory of the directory where the Tcl source files are located <i>(TCL_SRC_DIR)</i>. 
+
+       cd TCL_SRC_DIR/macosx   
+
+2. Run the *configure* command 
+
+       configure --enable-gcc  --enable-shared --enable-threads --prefix=TCL_INSTALL_DIR   
+
+   For a 64 bit platform also add <i>--enable-64bit</i> option to the command line. 
+
+3. If the *configure* command has finished successfully, start the building process 
+
+       make   
+  
+4. If building is finished successfully, start the installation of Tcl. 
+   All binary and service files of the product will be copied to the directory defined by *TCL_INSTALL_DIR*. 
+
+       make install   
+
+@subsubsection dev_guides__building_3rdparty_osx_2_1_3 Installation from sources: Tk 8.5
+
+Download the necessary archive from https://www.tcl.tk/software/tcltk/download.html and unpack it.
+
+1. Enter the *macosx* sub-directory of the directory where the  source files of Tk are located <i>(TK_SRC_DIR)</i>. 
+
+       cd TK_SRC_DIR/macosx   
+
+2. Run the *configure* command, where TCL_LIB_DIR is  TCL_INSTALL_DIR/lib 
+
+       configure --enable-gcc --enable-shared --enable-threads --with-tcl=TCL_LIB_DIR --prefix=TK_INSTALL_DIR   
+
+	For a 64 bit platform also add <i>--enable-64bit</i> option to the  command line. 
+
+3. If the *configure* command has finished successfully, start the building process:
+
+       make   
+
+4. If the building has finished successfully, start the  installation of Tk. All binary and service files of the product will be copied to the directory defined by *TK_INSTALL_DIR* (usually it is TCL_INSTALL_DIR) 
+
+       make install   
+
+@subsection dev_guides__building_3rdparty_osx_2_2 FreeType 2.4.10
+  
+FreeType is required for text display in the 3D viewer. 
+
+Download the necessary archive from https://sourceforge.net/projects/freetype/files/ and unpack it.
+
+1. Enter the directory where the source files of FreeType  are located <i>(FREETYPE_SRC_DIR)</i>. 
+
+       cd FREETYPE_SRC_DIR   
+
+2. Run the *configure* command 
+  
+       configure  --prefix=FREETYPE_INSTALL_DIR   
+
+   For a 64 bit platform also add <i>CFLAGS='-m64 -fPIC'  CPPFLAGS='-m64 -fPIC'</i> option to the command line. 
+
+3. If the *configure* command has finished successfully, start  the building process 
+
+       make   
+
+4. If building has finished successfully, start the installation of FreeType. 
+   All binary and service files of the product will be copied to the directory defined by *FREETYPE_INSTALL_DIR*.
+
+       make install   
+
+@section dev_guides__building_3rdparty_osx_3 Building Optional Third-party Products
+    
+@subsection dev_guides__building_3rdparty_osx_3_1 TBB 3.x or 4.x
+
+This third-party product is installed with binaries from the archive 
+that can be downloaded from https://github.com/intel/tbb.
+Go to the **Download** page, find the release version you need (e.g. *tbb30_018oss*) 
+and  pick the archive for Mac OS X platform. 
+To install, unpack the downloaded archive of TBB 3.0 product (*tbb30_018oss_osx.tgz*).
+
+@subsection dev_guides__building_3rdparty_osx_3_3 FreeImage 3.14.1 or 3.15.x
+
+Download the necessary archive from 
+https://sourceforge.net/projects/freeimage/files/Source%20Distribution/
+and unpack it. The directory with unpacked sources is  further referred to as *FREEIMAGE_SRC_DIR*.  
+
+Note that for building FreeImage on Mac OS X 10.7 you should replace *Makefile.osx* 
+in *FREEIMAGE_SRC_DIR* by the corrected file, which you can find in attachment to issue #22811 in OCCT Mantis bug tracker 
+(https://tracker.dev.opencascade.org/file_download.php?file_id=6937&type=bug).
+
+1. If you build FreeImage 3.15.x you can skip this  step. 
+   Modify <i>FREEIMAGE_SRC_DIR/Source/OpenEXR/Imath/ImathMatrix.h:</i> 
+  
+   In line 60 insert the following: 
+
+       #include string.h 
+
+   Modify <i>FREEIMAGE_SRC_DIR/Source/FreeImage/PluginTARGA.cpp:</i> 
+  
+   In line 320 replace: 
+
+       SwapShort(value); 
+
+   with: 
+
+       SwapShort(&value); 
+
+2. Enter the directory where the source files of FreeImage  are located <i>(FREEIMAGE_SRC_DIR)</i>. 
+
+       cd FREEIMAGE_SRC_DIR 
+
+3. Run the building process 
+
+       make   
+
+4. Run the installation process 
+   
+   1. If you have the permission to write into <i>/usr/local/include</i>  and <i>/usr/local/lib</i> directories, run the following command: 
+
+          make install   
+
+   2. If you do not have this permission, you need to modify file *FREEIMAGE_SRC_DIR/Makefile.osx*: 
+
+      Change line 49 from:     
+
+          PREFIX ?= /usr/local
+
+      to:
+   
+          PREFIX  ?= $(PREFIX) 
+
+      Change lines 65-69 from: 
+
+          install -d -m 755 -o  root -g wheel $(INCDIR) $(INSTALLDIR) 
+          install  -m 644 -o root -g wheel $(HEADER) $(INCDIR) 
+          install  -m 644 -o root -g wheel $(SHAREDLIB) $(STATICLIB) $(INSTALLDIR) 
+          ranlib  -sf $(INSTALLDIR)/$(STATICLIB) 
+          ln  -sf $(SHAREDLIB) $(INSTALLDIR)/$(LIBNAME) 
+    
+      to: 
+
+          install  -d $(INCDIR) $(INSTALLDIR) 
+          install  -m 755 $(HEADER) $(INCDIR) 
+          install  -m 755 $(STATICLIB) $(INSTALLDIR) 
+          install  -m 755 $(SHAREDLIB) $(INSTALLDIR) 
+          ln  -sf $(SHAREDLIB) $(INSTALLDIR)/$(VERLIBNAME)  
+          ln  -sf $(VERLIBNAME) $(INSTALLDIR)/$(LIBNAME)
+
+      Then run the installation process by the following command: 
+  
+          make PREFIX=FREEIMAGE_INSTALL_DIR  install 
+  
+5. Clean temporary files 
+  
+       make clean 
--- a/dox/dev_guides/building/3rdparty/3rdparty_windows.md
+++ b/dox/dev_guides/building/3rdparty/3rdparty_windows.md
@@ -0,0 +1,247 @@
+ Building 3rd-party libraries on Windows {#occt_dev_guides__building_3rdparty_windows}
+==============================================
+@tableofcontents
+
+@section dev_guides__building_3rdparty_win_1 Introduction
+
+This document presents guidelines for building third-party products used by Open CASCADE Technology (OCCT) and samples on Windows platform. It is assumed that you are already familiar with MS Visual Studio / Visual C++. 
+
+You need to use the same version of MS Visual Studio for building all third-party products and OCCT itself, in order to receive a consistent set of run-time binaries. 
+
+The links for downloading the third-party products are available on the web site of OPEN CASCADE SAS at https://www.opencascade.com/content/3rd-party-components.
+
+There are two types of third-party products used  by OCCT: 
+
+* Mandatory  products: 
+	* Tcl/Tk 8.5 -- 8.6;
+	* FreeType 2.4.10 -- 2.5.3.
+* Optional  products:
+	* TBB 3.x -- 4.x;
+	* FreeImage 3.14.1 -- 3.16.0;
+	* VTK 6.1.0.
+
+It is recommended to create a separate new folder on your workstation, where you will unpack the downloaded archives of the third-party  products, and where you will build these products (for example, *c:\\occ3rdparty*). 
+
+Further in this document, this folder is referred to as *3rdparty*. 
+
+@section dev_guides__building_3rdparty_win_2 Building Mandatory Third-party Products
+
+@subsection dev_guides__building_3rdparty_win_2_1 Tcl/Tk
+
+Tcl/Tk is required for DRAW test harness.
+
+@subsubsection dev_guides__building_3rdparty_win_2_1_1 Installation from sources: Tcl
+  
+Download the necessary archive from https://www.tcl.tk/software/tcltk/download.html and unpack it.
+  
+1. In the *win* sub-directory, edit file *buildall.vc.bat*:
+
+   * Edit the line "call ... vcvars32.bat" to have correct path to the version of Visual Studio to be used for building, for instance:
+
+         call "%VS80COMNTOOLS%\vsvars32.bat"
+
+     If you are building 64-bit version, set environment accordingly, e.g.:
+
+         call "%VS80COMNTOOLS%\..\..\VC\vcvarsall.bat" amd64
+     
+   * Define variable *INSTALLDIR* pointing to directory where Tcl/Tk will be installed, e.g.:
+
+         set INSTALLDIR=D:\OCCT\3rdparty\tcltk-86-32
+
+   * Add option *install* to the first command line calling *nmake*:
+
+         nmake -nologo -f makefile.vc release htmlhelp install %1
+
+   * Remove second call to *nmake* (building statically linked executable)
+
+2. Edit file *rules.vc* replacing line 
+
+       SUFX	    = tsgx
+
+   by
+
+       SUFX	    = sgx
+
+   This is to avoid extra prefix 't' in the library name, which is not recognized by default by OCCT build tools.
+
+
+3. By default, Tcl uses dynamic version of run-time library (MSVCRT), which must be installed on the system where Tcl will be used.
+   You may wish to link Tcl library with static version of run-time to avoid this dependency.
+   For that:
+
+   * Edit file *makefile.vc* replacing strings "crt = -MD" by "crt = -MT"
+
+   * Edit source file *tclMain.c* (located in folder *generic*) commenting out forward declaration of function *isatty()*.
+
+
+4. In the command prompt, run *buildall.vc.bat*
+
+   You might need to run this script twice to have *tclsh* executable installed; check subfolder *bin* of specified installation path to verify this.
+
+5. For convenience of use, we recommend making a copy of *tclsh* executable created in subfolder *bin* of *INSTALLDIR* and named with Tcl version number suffix, as *tclsh.exe* (with no suffix)
+
+       > cd D:\OCCT\3rdparty\tcltk-86-32\bin
+       > cp tclsh86.exe tclsh.exe
+
+@subsubsection dev_guides__building_3rdparty_win_2_1_2 Installation from sources: Tk
+  
+Download the necessary archive from https://www.tcl.tk/software/tcltk/download.html and unpack it.
+
+Apply the same steps as described for building Tcl above, with the same INSTALLDIR.
+Note that Tk produces its own executable, called *wish*. 
+
+You might need to edit default value of *TCLDIR* variable defined in *buildall.vc.bat* (should be not necessary if you unpack both Tcl and Tk sources in the same folder).
+
+@subsection dev_guides__building_3rdparty_win_2_2 FreeType
+
+FreeType is required for text display in a 3D viewer. You can download its sources from https://sourceforge.net/projects/freetype/files/
+
+### The building procedure
+
+1. Unpack the downloaded archive of FreeType product into the *3rdparty*  folder. As a result, you will get a folder named, for example, *3rdparty\\freetype-2.4.10*.  Further in this document, this folder is referred to as *freetype*. 
+   
+2. Open the solution file *freetype\\builds\\win32\\vc20xx\\freetype.sln*  in Visual Studio. Here *vc20xx* stands for your version of Visual Studio. 
+
+3. Select the configuration to build: either Debug or Release. 
+
+4. Build  the *freetype* project. 
+
+   As a result, you will get a  freetype import library (.lib) in the *freetype\\obj\\win32\\vc20xx*  folder.  
+
+
+5. If you build FreeType for a 64 bit platform, select in the main menu **Build - Configuration Manager**  and add *x64* platform to the solution configuration by copying the settings from Win32 platform: 
+
+   @figure{/dev_guides/building/3rdparty/images/3rdparty_image001.png}
+
+   Update the value of the Output File for  x64 configuration: 
+
+   @figure{/dev_guides/building/3rdparty/images/3rdparty_image003.png}
+
+   Build the *freetype* project. 
+
+   As a result, you will obtain a 64 bit import library (.lib) file in the *freetype\\x64\\vc20xx*  folder. 
+
+   To build FreeType as a dynamic library (.dll) follow steps 6, 7 and 8 of this procedure. 
+
+6. Open menu Project-> Properties-> Configuration  Properties-> General and change option **Configuration Type** to *Dynamic  Library (.dll)*. 
+7. Edit file *freetype\\include\\freetype\\config\\ftoption.h*:  
+  
+   in line 255, uncomment the definition of macro *FT_EXPORT* and change it as follows: 
+
+       #define FT_EXPORT(x)   __declspec(dllexport) x 
+
+8. Build  the *freetype* project. 
+
+   As a result, you will obtain the files of the import  library (.lib) and the dynamic library (.dll)   in folders <i>freetype  \\objs\\release</i> or <i>\\objs\\debug </i>. 
+   
+   If you build for a 64 bit platform, follow step 5 of the procedure. 
+
+   To facilitate the use of FreeType libraries in OCCT with minimal adjustment of build procedures, it is recommended to copy the include files and libraries of FreeType into a separate folder, named according to the pattern: *freetype-compiler-bitness-building mode*, where: 
+   * **compiler** is *vc8* or *vc9* or *vc10* or *vc11*; 
+   * **bitness**  is *32* or *64*;
+   * **building mode** is *opt* (for Release) or *deb* (for Debug). 
+    
+   The *include* subfolder should be copied as is, while libraries should be renamed to *freetype.lib* and *freetype.dll* (suffixes removed) and placed to subdirectories *lib *and  *bin*, respectively. If the Debug configuration is built, the Debug libraries should be put into subdirectories *libd* and *bind*. 
+
+@section dev_guides__building_3rdparty_win_3 Building Optional Third-party Products
+
+@subsection dev_guides__building_3rdparty_win_3_1 TBB
+
+This third-party product is installed with binaries 
+from the archive that can be downloaded from https://github.com/intel/tbb.
+Go to the **Download** page, find the  release version you need  (e.g. *tbb30_018oss*) and pick the archive for Windows  platform. 
+
+Unpack the downloaded  archive of TBB product into the *3rdparty* folder. 
+
+Further in this document,  this folder is referred to as *tbb*. 
+
+@subsection dev_guides__building_3rdparty_win_3_3 FreeImage
+
+This third-party product should be built as a dynamically loadable library (.dll file). 
+You can download its sources from 
+https://sourceforge.net/projects/freeimage/files/Source%20Distribution/
+
+### The building procedure: 
+
+1. Unpack the  downloaded archive of FreeImage product into *3rdparty* folder. 
+  
+   As a result, you should have a folder named *3rdparty\\FreeImage*. 
+  
+   Rename it according to the rule: *freeimage-platform-compiler-building  mode*, where 
+   
+   * **platform**  is *win32* or *win64*; 
+   * **compiler**  is *vc8* or *vc9* or *vc10* or *vc11*; 
+   * **building  mode** is *opt* (for release) or *deb* (for debug) 
+
+   Further in this  document, this folder is referred to as *freeimage*. 
+
+2. Open the solution file *freeimage\\FreeImage.*.sln* in your Visual Studio. 
+  
+   If you use a Visual Studio version higher than VC++ 2008, apply conversion of the workspace. 
+   Such conversion should be suggested automatically by Visual  Studio. 
+    
+3. Select a  configuration to build. 
+
+   - Choose **Release**  if you are building Release binaries. 
+   - Choose **Debug** if you are building  Debug binaries. 
+
+   *Note:* 
+
+   If you want to  build a debug version of FreeImage binaries then you need to rename the following files in FreeImage and FreeimagePlus projects:
+   
+   Project -> Properties -> Configuration Properties -> Linker -> General -> Output File
+
+       FreeImage*d*.dll  to FreeImage.dll 
+       FreeImagePlus*d*.dll to FreeImagePlus.dll 
+
+   Project -> Properties -> Configuration Properties -> Linker -> Debugging-> Generate Program Database File
+
+       FreeImage*d*.pdb  to FreeImage.pdb 
+       FreeImagePlus*d*.pdb to FreeImagePlus.pdb 
+
+   Project -> Properties -> Configuration Properties -> Linker -> Advanced-Import Library
+
+       FreeImage*d*.lib  to FreeImage.lib 
+       FreeImagePlus*d*.lib  to FreeImagePlus.lib 
+
+   Project -> Properties -> Configuration Properties -> Build Events -> Post -> Build Event -> Command Line 
+
+       FreeImage*d*.dll     to FreeImage.dll 
+       FreeImage*d*.lib     to FreeImage.lib 
+       FreeImagePlus*d*.dll to FreeImagePlus.dll 
+       FreeImagePlus*d*.lib to FreeImagePlus.lib 
+
+   Additionally, rename in project FreeImagePlus 
+   
+   Project -> Properties -> Configuration  Properties -> Linker -> Input -> Additional Dependencies 
+
+       from FreeImage*d*.lib to FreeImage.lib 
+
+4. Select a platform to build. 
+
+   - Choose *Win32* if you are building for a 32 bit platform. 
+   - Choose *x64* if you are building for a 64 bit platform. 
+
+5. Start the building process. 
+
+   As a result, you should have the  library files of FreeImage product  in *freeimage\\Dist* folder (*FreeImage.dll* and *FreeImage.lib*) and in *freeimage\\Wrapper\\FreeImagePlus\\dist* folder (*FreeImagePlus.dll* and *FreeImagePlus.lib*).
+
+@subsection dev_guides__building_3rdparty_win_3_4 VTK
+
+VTK is an open-source, freely available software system for 3D computer graphics, image processing and visualization. VTK Integration Services component provides adaptation functionality for visualization of OCCT topological shapes by means of VTK library.
+
+### The building procedure:
+
+1. Download the necessary archive from https://www.vtk.org/VTK/resources/software.html and unpack it into *3rdparty* folder.
+
+   As a result, you will get a folder named, for example, <i>3rdparty\VTK-6.1.0.</i>
+
+   Further in this document, this folder is referred to as *VTK*.
+
+2. Use CMake to generate VS projects for building the library:
+   - Start CMake-GUI and select VTK folder as source path, and the folder of your choice for VS project and intermediate build data.
+   - Click **Configure**.
+   - Select the VS version to be used from the ones you have installed (we recommend using VS 2010) and the architecture (32 or 64-bit).
+   - Generate VS projects with default CMake options. The open solution *VTK.sln* will be generated in the build folder.
+
+3. Build project VTK in Release mode.
--- a/dox/dev_guides/building/3rdparty/images/3rdparty_image001.png
+++ b/dox/dev_guides/building/3rdparty/images/3rdparty_image001.png
--- a/dox/dev_guides/building/3rdparty/images/3rdparty_image003.png
+++ b/dox/dev_guides/building/3rdparty/images/3rdparty_image003.png
--- a/dox/dev_guides/building/3rdparty/images/3rdparty_image004.png
+++ b/dox/dev_guides/building/3rdparty/images/3rdparty_image004.png
--- a/dox/dev_guides/building/3rdparty/images/3rdparty_image005.png
+++ b/dox/dev_guides/building/3rdparty/images/3rdparty_image005.png
--- a/dox/dev_guides/building/3rdparty/images/3rdparty_image006.png
+++ b/dox/dev_guides/building/3rdparty/images/3rdparty_image006.png
--- a/dox/dev_guides/building/3rdparty/images/3rdparty_image007.png
+++ b/dox/dev_guides/building/3rdparty/images/3rdparty_image007.png
--- a/dox/dev_guides/building/3rdparty/images/genconf_linux.png
+++ b/dox/dev_guides/building/3rdparty/images/genconf_linux.png
--- a/dox/dev_guides/building/3rdparty/images/genconf_osx.png
+++ b/dox/dev_guides/building/3rdparty/images/genconf_osx.png
--- a/dox/dev_guides/building/3rdparty/images/genconf_windows.png
+++ b/dox/dev_guides/building/3rdparty/images/genconf_windows.png
--- a/dox/dev_guides/building/android/android.md
+++ b/dox/dev_guides/building/android/android.md
@@ -0,0 +1,93 @@
+Building with CMake for Android {#occt_dev_guides__building_android}
+===================
+
+@tableofcontents
+
+This article describes the steps to build OCCT libraries for Android from a complete source package
+with GNU make (makefiles) on Windows 7 and Ubuntu 15.10.
+
+The steps on Windows and Ubuntu are similar. There is the only one difference: makefiles are built with mingw32-make
+on Windows and native GNU make on Ubuntu.
+
+Required tools (download and install if it is required):
+  - CMake v3.7+ https://www.cmake.org/cmake/resources/software.html
+  - Android NDK rev.10+ https://developer.android.com/tools/sdk/ndk/index.html
+  - GNU Make: MinGW v4.82+ for Windows (https://sourceforge.net/projects/mingw/files/), GNU Make 4.0 for Ubuntu.
+
+## Prerequisites
+
+In toolchain file <i>$CASROOT/adm/templates/android.toolchain.config.cmake</i>:
+
+  - Set CMAKE_ANDROID_NDK variable equal to your Android NDK path.
+  - Set CMAKE_ANDROID_STL_TYPE variable to specify which C++ standard library to use.
+
+The default value of CMAKE_ANDROID_STL_TYPE is <i>gnustl_shared</i> (GNU libstdc++ Shared)
+
+@figure{/dev_guides/building/android/images/android_image001.png}
+
+## Generation of makefiles using CMake GUI tool
+Run GUI tool provided by CMake: cmake-gui
+
+### Tools configuration
+  - Specify the root folder of OCCT (<i>$CASROOT</i>, which contains *CMakelists.txt* file) by clicking **Browse Source**.
+  - Specify the location (build folder) for Cmake generated project files by clicking **Browse Build**.
+
+@figure{/dev_guides/building/android/images/android_image002.png}
+
+Click **Configure** button. It opens the window with a drop-down list of generators supported by CMake project.
+
+Select "MinGW Makefiles" item from the list
+  - Choose "Specify toolchain file for cross-compiling"
+  - Click "Next"
+
+@figure{/dev_guides/building/android/images/android_image003.png}
+
+  - Specify a toolchain file at the next dialog by <i>android.toolchain.config.cmake</i> . It is contained by cross-compilation toolchain for CMake
+  - Click "Finish"
+@figure{/dev_guides/building/android/images/android_image004.png}
+
+If on Windows the message is appeared: "CMake Error: CMake was unable to find a build program corresponding to "MinGW Makefiles"
+CMAKE_MAKE_PROGRAM is not set.  You probably need to select a different build tool.",
+specify **CMAKE_MAKE_PROGRAM** to mingw32-make executable.
+@figure{/dev_guides/building/android/images/android_image005.png}
+
+### OCCT Configuration
+
+How to configure OCCT, see "OCCT Configuration" section of @ref occt_dev_guides__building_cmake "Building with CMake"
+
+### Generation of makefiles
+
+Click **Generate** button and wait until the generation process is finished. 
+Then makefiles will appear in the build folder (e.g. <i> D:/occt/build-android </i>).
+
+## Generation of makefiles using CMake from the command line
+
+Alternatively one may specify the values without a toolchain file:
+
+> cmake -G "MinGW Makefiles" -DCMAKE_SYSTEM_NAME=Android -DCMAKE_ANDROID_NDK=D:/DevTools/android-ndk-r13b -DCMAKE_ANDROID_STL_TYPE=gnustl_shared -DCMAKE_SYSTEM_VERSION=15 -DCMAKE_ANDROID_ARCH_ABI=armeabi-v7a -DCMAKE_MAKE_PROGRAM=D:/DevTools/MinGW/bin/mingw32-make.exe -D3RDPARTY_DIR=D:/occt-3rdparty D:/occt
+
+@figure{/dev_guides/building/android/images/android_image006.png}
+
+## Building makefiles of OCCT
+
+Open console and go to the build folder. Type "mingw32-make" (Windows) or "make" (Ubuntu) to start build process.
+
+> mingw32-make
+or
+> make
+
+
+Parallel building can be started with using **"-jN"** argument of "mingw32-make/make", where N is the number of building threads.
+
+> mingw32-make -j4
+or
+> make -j4
+
+## Install built OCCT libraries
+
+Type "mingw32-make/make" with argument "install" to place the libraries 
+to the install folder (see "OCCT Configuration" section of @ref occt_dev_guides__building_cmake "Building with CMake")
+
+> mingw32-make install
+or
+> make install
--- a/dox/dev_guides/building/android/images/android_image001.png
+++ b/dox/dev_guides/building/android/images/android_image001.png
--- a/dox/dev_guides/building/android/images/android_image002.png
+++ b/dox/dev_guides/building/android/images/android_image002.png
--- a/dox/dev_guides/building/android/images/android_image003.png
+++ b/dox/dev_guides/building/android/images/android_image003.png
--- a/dox/dev_guides/building/android/images/android_image004.png
+++ b/dox/dev_guides/building/android/images/android_image004.png
--- a/dox/dev_guides/building/android/images/android_image005.png
+++ b/dox/dev_guides/building/android/images/android_image005.png
--- a/dox/dev_guides/building/android/images/android_image006.png
+++ b/dox/dev_guides/building/android/images/android_image006.png
--- a/dox/dev_guides/building/building.md
+++ b/dox/dev_guides/building/building.md
@@ -0,0 +1,24 @@
+Building OCCT from sources {#occt_dev_guides__building}
+=========
+
+Before building OCCT, make sure to have all the required third-party libraries installed.
+The list of required libraries depends on what OCCT modules will be used, and your preferences.
+The typical minimum is **Freetype** (necessary for Visualization) and **Tcl/Tk** (for DRAW Test Harness).
+See "Third-party libraries" section in \ref OCCT_OVW_SECTION_5 "Overview" for a full list.
+
+On Windows, the easiest way to install third-party libraries is to download archive with pre-built binaries from https://www.opencascade.com/content/3rd-party-components.
+On Linux and OS X, it is recommended to use the version installed in the system natively.
+
+You can also build third-party libraries from their sources:
+* \subpage occt_dev_guides__building_3rdparty_windows
+* \subpage occt_dev_guides__building_3rdparty_linux
+* \subpage occt_dev_guides__building_3rdparty_osx
+
+Build OCCT using your preferred build tool.
+* \subpage occt_dev_guides__building_cmake "Building with CMake (cross-platform)"
+* \subpage occt_dev_guides__building_android "Building with CMake for Android (cross-platform)"
+* \subpage occt_dev_guides__building_msvc "Building on Windows with MS Visual Studio projects"
+* \subpage occt_dev_guides__building_code_blocks "Building on Mac OS X with Code::Blocks projects"
+* \subpage occt_dev_guides__building_xcode "Building on Mac OS X with Xcode projects"
+
+The current version of OCCT can be consulted in the file src/Standard/Standard_Version.hxx
--- a/dox/dev_guides/building/cmake/cmake.md
+++ b/dox/dev_guides/building/cmake/cmake.md
@@ -1,17 +1,9 @@
-Build OCCT {#build_upgrade__building_occt}
+Building with CMake {#occt_dev_guides__building_cmake}
 ===================

@tableofcontents

-@note Before building OCCT, make sure to have all required third-party libraries installed.
-The list of required libraries depends on what OCCT modules will be used, and your preferences.
-The typical minimum is **Freetype** (necessary for Visualization) and **Tcl/Tk** (for DRAW).
-See @ref intro_req "requirements on 3rdparty libraries" for a full list.
-On OS X we recommend to use native libraries.
-
-@section build_occt_windows Windows
-
-@subsection build_occt_win_cmake Building with CMake tool
+@section build_cmake_intro General

 This article describes the **CMake**-based build process, which is now suggested as a standard way to produce the binaries of Open CASCADE Technology from sources. *OCCT requires CMake version 2.8.12 or later*.

@@ -20,9 +12,9 @@ This article describes the **CMake**-based build process, which is now suggested
 Here we describe the build procedure on the example of Windows platform with Visual Studio 2010. 
 However, CMake is cross-platform and can be used to build OCCT on Linux and OS X in essentially the same way.

-@note Before you start, make sure to have installed all 3-rd party products that you are going to use with OCCT; see @ref build_upgrade.
+@note Before you start, make sure to have installed all 3-rd party products that you are going to use with OCCT; see @ref occt_dev_guides__building.

-@subsubsection build_cmake_start Start CMake
+@section build_cmake_start Start CMake

 CMake is a tool that generates the actual project files for the selected target build system (e.g. Unix makefiles) or IDE (e.g. Visual Studio 2010).

@@ -45,14 +37,14 @@ It is however possible to choose one installation directory for several configur
    d:/occt-install            -- the installation directory that is
                                  able to contain several OCCT configurations

-@subsubsection build_cmake_conf Configuration process
+@section build_cmake_conf Configuration process

 If the command-line tool is used, run the tool from the build directory with a single argument indicating the source (relative or absolute path) directory:

    cd d:/tmp/occt-build-vc10-x64
    ccmake d:/occt

-@figure{/build/build_occt/images/cmake_image000.png}
+@figure{/dev_guides/building/cmake/images/cmake_image000.png}

 Press *c* to configure.

@@ -60,13 +52,13 @@ All actions required in the configuration process with the GUI tool will be desc

 If the GUI tool is used, run this tool without additional arguments and after that specify the source directory by clicking **Browse Source** and the build (binary) one by clicking **Browse Build**.

-@figure{/build/build_occt/images/cmake_image001.png}
+@figure{/dev_guides/building/cmake/images/cmake_image001.png}

 **Note**: Each configuration of the project should be built in its own directory. When building multiple configurations it is recommended to indicate in the name of build directories the system, bitness and compiler (e.g., <i>d:/occt/build/win32-vc10</i> ).

 Once the source and build directories are selected, "Configure" button should be pressed in order to start manual configuration process. It begins with selection of a target configurator. It is "Visual Studio 10 2010 Win64" in our example.

-@figure{/build/build_occt/images/cmake_image002.png}
+@figure{/dev_guides/building/cmake/images/cmake_image002.png}

 To build OCCT for **Universal Windows Platform (UWP)** specify the path to toolchain file for cross-compiling <i>d:/occt/adm/templates/uwp.toolchain.config.cmake</i>.

@@ -76,7 +68,7 @@ Alternatively, if you are using CMake from the command line add options -DCMAKE_

 Once "Finish" button is pressed, the first pass of the configuration process is executed. At the end of the process, CMake outputs the list of environment variables, which have to be properly specified for successful configuration. 

-@figure{/build/build_occt/images/cmake_image003.png}
+@figure{/dev_guides/building/cmake/images/cmake_image003.png}

 The error message provides some information about these variables. This message will appear after each pass of the process until all required variables are specified correctly.

@@ -132,7 +124,7 @@ The following table gives the full list of environment variables used at the con

 **Note:** Only the forward slashes ("/") are acceptable in the CMake options defining paths.

-@subsubsection build_cmake_3rdparty 3rd party search mechanism
+@section build_cmake_3rdparty 3rd party search mechanism

 If *3RDPARTY_DIR* directory is defined, then required 3rd party binaries are sought in it, and default system folders are ignored.

@@ -175,15 +167,15 @@ During the configuration process the related variables (*3RDPARTY_FREETYPE_DLL_D

 **Note**: The names of searched libraries and header files are hard-coded. If there is the need to change their names, change appropriate cmake variables (edit CMakeCache.txt file or edit in cmake-gui in advance mode) without reconfiguration: *3RDPARTY_\<PRODUCT\>_INCLUDE* for include, *3RDPARTY_\<PRODUCT\>_LIB* for library and *3RDPARTY_\<PRODUCT\>_DLL* for shared library.

-@subsubsection build_cmake_gen Projects generation
+@section build_cmake_gen Projects generation

 Once the configuration process is done, the "Generate" button is used to prepare project files for the target IDE. In our exercise the Visual Studio solution will be automatically created in the buid directory.

-@subsubsection build_cmake_build Building
+@section build_cmake_build Building

 Go to the build folder, start the Visual Studio solution *OCCT.sln* and build it by clicking **Build -> Build Solution**.

-@figure{/build/build_occt/images/cmake_image004.png}
+@figure{/dev_guides/building/cmake/images/cmake_image004.png}

 By default the build solution process skips the building of the INSTALL and Overview project.

@@ -193,7 +185,7 @@ When the building process is finished build:

 For this, right-click on the *Overview/INSTALL* project and select **Project Only -> Build Only** -> *Overview/INSTALL* in the solution explorer. 

-@subsubsection build_cmake_install Installation
+@section build_cmake_install Installation

 Installation is a process of extracting redistributable resources (binaries, include files etc) from the build directory into the installation one. The installation directory will be free of project files, intermediate object files and any other information related to the build routines. 

@@ -221,362 +213,3 @@ follows:
 If CMake installation flags are enabled for the 3rd party products (e.g. INSTALL_FREETYPE), then the corresponding binaries will be copied to the same bin(d) and lib(d) directories together with the native binaries of OCCT. Such organization of libraries can be especially helpful if your OCCT-based software does not use itself the 3rd parties of Open CASCADE Technology (thus, there is no sense to pack them into dedicated directories).

 The installation folder contains the scripts to run *DRAWEXE* (*draw.bat* or *draw.sh*), samples (if they were installed) and overview.html (short-cut for installed OCCT overview documentation).
-
-@subsection build_occt_win_codeblocks Building with Code::Blocks
-
-This file describes steps to build OCCT libraries from sources using **Code::Blocks**, a cross-platform IDE, using project files generated by OCCT legacy tool **genproj**.
-It can be used as an alternative to CMake build system (see @ref build_occt_win_cmake) for all supported platforms.
-
-@subsubsection build_codeblocks_3rdparty Third-party libraries
-
-Before building OCCT, make sure to have all the needed third-party libraries installed, see @ref build_upgrade.
-
-@subsubsection build_codeblocks_conf Configuration
-
-Before building it is necessary to set up build environment.
-
-The environment is defined in the file *custom.sh* (on Linux and OS X) or *custom.bat* (on Windows) which can be edited directly:
-
-* Add paths to includes of used third-party libraries in variable *CSF_OPT_INC*. 
-* Add paths to their binary libraries in variable  *CSF_OPT_LIB64*.
-* Set variable *SHORTCUT_HEADERS* to specify a method for population of folder *inc* by header files. Supported methods are:
-  * *Copy* - headers will be copied from *src*;
-  * *ShortCut* - short-cut header files will be created, redirecting to same-named header located in *src*;
-  * "HardLink* - hard links to headers located in *src* will be created.
-* For optional  third-party libraries, set corresponding environment variable <i>HAVE_<LIBRARY_NAME></i> to either *false*,  e.g.:
-~~~~~
-       export HAVE_FREEIMAGE=false
-~~~~~
-
-Alternatively, or when *custom.sh* or *custom.bat* does not exist, you can launch **genconf** tool to configure environment interactively:
-
-@figure{/build/build_occt/images/genconf_linux.png}
-
-Click "Save" to store the specified configuration in *custom.sh* or *custom.bat* file.
-  
-@subsubsection build_codeblocks_gen Projects generation
-
-Launch **genproj** tool with option *cbp* to update content of *inc* folder and generate project files after changes in OCCT code affecting layout or composition of source files:
-
-~~~~~
-  $ cd /dev/OCCT/opencascade-7.0.0
-  $ ./genproj cbp
-~~~~~
-
-The generated Code::Blocks project are placed into subfolder *adm/&lt;OS&gt;/cbp*.
-
-@note To use **genproj** and **genconf** tools you need to have Tcl installed and accessible by PATH.
-
-@subsubsection build_codeblocks_build Building
-
-To start **Code::Blocks**, launch script *codeblocks.sh*.
-
-To build all toolkits, click **Build->Build workspace** in the menu bar.
-
-To start *DRAWEXE*, which has been built with **Code::Blocks** on Mac OS X, run the script
-~~~~~
-   ./draw.sh cbp [d]
-~~~~~
-Option *d* is used if OCCT has been built in **Debug** mode.
-
-@subsection build_occt_genproj Building with Genproj tool
-
-This page describes steps to build OCCT libraries from a complete source archive on Windows with <b>MS Visual C++</b> using projects generated by **genproj** tool. 
-It is an alternative to use of CMake build system (see @ref build_occt_win_cmake).
-
-**genproj** is a legacy tool (originated from command "wgenproj" in WOK) for generation of Visual Studio, Code.Blocks, and XCode project files used for building Open CASCADE Technology.
-These project files are placed inside OCCT directory (in *adm* subfolder) and use relative paths, thus can be moved together with sources.
-
-The project files included in official distribution of OCCT are generated by this tool.
-If you have official distribution with project files included, you can use them directly without a need to call **genproj**.
-
-@subsubsection build_msvc_3rdparty Third-party libraries
-
-Before building OCCT, make sure to have all the required third-party libraries installed.
-
-The easiest way to install third-party libraries is to download archive with pre-built binaries, corresponding to version of Visual Studio you are using, from https://opencascade.com/content/3rd-party-components.
-
-You can also build third-party libraries from their sources, see @ref build_upgrade_building_3rdparty for instructions.
-
-@subsubsection build_msvc_conf Configuration
-
-If you have Visual Studio projects already available (pre-installed or generated), you can edit file *custom.bat* manually to adjust the environment:
-
-* *VCVER* -- specification of format of project files, defining also version of Visual Studio to be used, and default name of the sub-folder for binaries:
-
-| VCVER     | Visual Studio version | Windows Platform                 | Binaries folder name |
-|-----------|-----------------------|----------------------------------|----------------------|
-| vc10      | 2010 (10)             | Desktop (Windows API)            | vc10 |
-| vc11      | 2012 (11)             | Desktop (Windows API)            | vc11 |
-| vc12      | 2013 (12)             | Desktop (Windows API)            | vc12 |
-| vc14      | 2015 (14)             | Desktop (Windows API)            | vc14 |
-| vc14-uwp  | 2015 (14)             | UWP (Universal Windows Platform) | vc14-uwp |
-| vc141     | 2017 (15)             | Desktop (Windows API)            | vc14 |
-| vc141-uwp | 2017 (15)             | UWP (Universal Windows Platform) | vc14-uwp |
-| vc142     | 2019 (16)             | Desktop (Windows API)            | vc14 |
-| vc142-uwp | 2019 (16)             | UWP (Universal Windows Platform) | vc14-uwp |
-
-* *ARCH* -- architecture (32 or 64), affects only *PATH* variable for execution
-* <i>HAVE_*</i> -- flags to enable or disable use of optional third-party products
-* <i>CSF_OPT_*</i> -- paths to search for includes and binaries of all used  third-party products
-* *SHORTCUT_HEADERS* -- defines method for population of folder *inc* by header files. Supported methods are:
-  * *Copy* - headers will be copied from *src*;
-  * *ShortCut* - short-cut header files will be created, redirecting to same-named header located in *src*;
-  * "HardLink* - hard links to headers located in *src* will be created.
-
-Alternatively, you can launch **genconf**, a GUI tool allowing to configure build options interactively.
-That tool will analyze your environment and propose you to choose available options:
-
-* Version of Visual Studio to be used (from the list of installed ones, detected by presence of environment variables like *VS100COMNTOOLS*).
-* Method to populate folder *inc* (short-cuts by default).
-* Location of third-party libraries (usually downloaded from OCCT web site, see above).
-* Path to common directory where third-party libraries are located (optional).
-* Paths to headers and binaries of the third-party libraries (found automatically basing on previous options; click button "Reset" to update).
-* Generation of PDB files within Release build ("Release with Debug info", false by default).
-
-@figure{/build/build_occt/images/genconf_windows.png}
-
-Click "Save" to store the specified configuration in *custom.bat* file.
-  
-@subsubsection build_msvc_generate Projects generation
-
-Launch **genproj** to update content of *inc* folder and generate project files after changes in OCCT code affecting layout or composition of source files.
-
-@note To use **genproj** and **genconf** tools you need to have Tcl installed and accessible by PATH.
-If Tcl is not found, the tool may prompt you to enter the path to directory where Tcl can be found.
- 
-~~~~~
-  $ genproj.bat
-~~~~~
-
-Note that if *custom.bat* is not present, **genproj** will start **genconf** to configure environment.
-
-@subsubsection build_msvc_build Building
-
-Launch *msvc.bat* to start Visual Studio with all necessary environment variables defined, and build the whole solution or required toolkits.
-
-Note: the MSVC project files are located in folders <i>adm\\msvc\\vc...</i>.
-Binaries are produced in *win32* or *win64* folders.
-
-To start DRAW, launch *draw.bat*.
-
-@section build_occt_linux Linux
-
-You may choose one of the following ways to generate, configure and build OCCT sources on Linux just keeping in mind 
-this platform specific:
-
-* @ref build_occt_win_cmake "Configuration, generation and building OCCT on Windows using CMake tool"
-* @ref build_occt_code_blocks "Building on Mac OS X with Code::Blocks IDE"
-
-@section build_occt_crossplatform_cmake Android (cross-compiling)
-
-This article describes the steps to build OCCT libraries for Android from a complete source package
-with GNU make (makefiles). The steps on Windows 7 and Ubuntu 15.10 are similar. There is the only one difference:
- makefiles are built with mingw32-make
-on Windows and native GNU make on Ubuntu.
-
-Required tools (download and install if it is required):
-  - CMake v3.0+ http://www.cmake.org/cmake/resources/software.html
-  - Cross-compilation toolchain for CMake https://github.com/taka-no-me/android-cmake
-  - Android NDK rev.10+ https://developer.android.com/tools/sdk/ndk/index.html
-  - GNU Make: MinGW v4.82+ for Windows (http://sourceforge.net/projects/mingw/files/), GNU Make 4.0 for Ubuntu. 
-
-Run GUI tool provided by CMake.
-
-@subsection build_occt_crossplatform_cmake_config Configuration
-
-**Configure Tools**
-  - Specify the root folder of OCCT (<i>$CASROOT</i>, which contains *CMakelists.txt* file) by clicking **Browse Source**.
-  - Specify the location (build folder) for Cmake generated project files by clicking **Browse Build**.
-
-@figure{/build/build_occt/images/android_image001.png}
-
-Click **Configure** button. It opens the window with a drop-down list of generators supported by CMake project.
-
-Select "MinGW MakeFiles" item from the list
-  - Choose "Specify toolchain file for cross-compiling"
-  - Click "Next"
-@figure{/build/build_occt/images/android_image002.png}
-
-  - Specify a toolchain file at the next dialog by android.toolchain.cmake . It is contained by cross-compilation 
-toolchain for CMake
-  - Click "Finish"
-@figure{/build/build_occt/images/android_image003.png}
-
-If ANDROID_NDK environment variable is not defined in current OS, add cache entry ANDROID_NDK (entry type is PATH) -- 
-path to the NDK folder ("Add Entry" button)
-@figure{/build/build_occt/images/android_image004.png}
-
-If on Windows the message is appeared: "CMake Error: CMake was unable to find a build program corresponding 
-to "MinGW Makefiles"
-CMAKE_MAKE_PROGRAM is not set.  You probably need to select a different build tool.",
-specify **CMAKE_MAKE_PROGRAM** to mingw32-make executable.
-@figure{/build/build_occt/images/android_image005.png}
-
-**Configure OCCT**
-
-How to configure OCCT, see "OCCT Configuration" section of @ref build_occt_win_cmake 
-"Configure, Generate, Build using CMake tool" taking into account the specific configuration variables for android:
-  - ANDROID_ABI = armeabi-v7a
-  - ANDROID_NATIVE_API_LEVEL = 15
-  - ANDROID_NDK_LAYOUT is equal to CMAKE_BUILD_TYPE variable
-  - **BUILD_MODULE_Draw = OFF**
-
-@figure{/build/build_occt/images/android_image006.png}
-
-@subsection build_occt_crossplatform_cmake_generation Generate Makefiles
-
-Click **Generate** button and wait until the generation process is finished. 
-Then makefiles will appear in the build folder (e.g. <i> D:/tmp/occt-android </i>).
-
-@subsection build_occt_crossplatform_cmake_building Build Makefiles
-
-Open console and go to the build folder. Type "mingw32-make" (Windows) or "make" (Ubuntu) to start build process.
-
-> mingw32-make
-or
-> make
-
-Parallel building can be started with using **"-jN"** argument of "mingw32-make/make", where N is the number of
- building threads.
-
-> mingw32-make -j4
-or
-> make -j4
-
-@subsection build_occt_crossplatform_cmake_install Install OCCT Libraries
-
-Type "mingw32-make/make" with argument "install" to place the libraries to the install folder
-
-> mingw32-make install
-or
-> make install
-
-@section build_occt_macos Mac OS X
-
-@subsection build_occt_macos_xcode Building with Xcode
-
-This file describes steps to build OCCT libraries from sources on Mac OS X with **Xcode** projects, generated by OCCT legacy tool **genproj**.
-
-<h2>Configuration</h2>
-
-Before building it is necessary to set up build environment.
-
-The environment is defined in the file *custom.sh* which can be edited directly:
-
-* Add paths to includes of used third-party libraries in variable *CSF_OPT_INC* (use colon ":" as path separator).
-* Add paths to their binary libraries in variable  *CSF_OPT_LIB64*.
-* Set variable *SHORTCUT_HEADERS* to specify a method for population of folder *inc* by header files. Supported methods are:
-  * *Copy* - headers will be copied from *src*;
-  * *ShortCut* - short-cut header files will be created, redirecting to same-named header located in *src*;
-  * "HardLink* - hard links to headers located in *src* will be created.
-* For optional  third-party libraries, set corresponding environment variable <i>HAVE_<LIBRARY_NAME></i> to either *false*,  e.g.:
-~~~~~
-       export HAVE_GL2PS=false
-~~~~~
-
-Alternatively, or when *custom.sh* does not exist, you can launch *genconf.sh* to configure environment interactively:
-
-@figure{/build/build_occt/images/genconf_osx.png}
-
-Click "Save" to store the specified configuration in *custom.sh* file.
-  
-<h2>Projects generation</h2>
-
-Launch **genproj** tool to update content of *inc* folder and generate project files after changes in OCCT code affecting layout or composition of source files.
-
-@note To use **genproj** and **genconf** tools you need to have Tcl installed and accessible by PATH.
-
-For instance, in Terminal application:
-
-~~~~~
-  $ cd /dev/OCCT/opencascade-7.0.0
-  $ ./genproj
-~~~~~
-
-<h2>Building</h2>
-
-To start **Xcode**, launch script *xcode.sh*.
-
-To build a certain toolkit, select it in **Scheme** drop-down list in Xcode toolbar, press **Product** in the menu and click **Build** button. 
-
-To build the entire OCCT:
-* Create a new empty project (select **File -> New -> Project -> Empty project** in the menu; input the project name, e.g. *OCCT*; then click **Next** and **Create**).
-* Drag and drop the *OCCT* folder in the created *OCCT* project in the Project navigator.
-* Select **File -> New -> Target -> Aggregate** in the menu. 
-* Enter the project name (e.g. *OCCT*) and click **Finish**. The **Build Phases** tab will open.  
-* Click "+" button to add the necessary toolkits to the target project. It is possible to select all toolkits by pressing **Command+A** combination. 
-
-<h2>Launching DRAW</h2>
-
-To start *DRAWEXE*, which has been built with Xcode on Mac OS X, perform the following steps:
-
-1.Open Terminal application
-
-2.Enter <i>\<OCCT_ROOT_DIR\></i>:
-~~~~~
-   cd \<OCCT_ROOT_DIR\>
-~~~~~
-
-3.Run the script
-~~~~~
-   ./draw_cbp.sh xcd [d]
-~~~~~
-
-Option *d* is used if OCCT has been built in **Debug** mode.
-
-@subsection build_occt_code_blocks Building with Code::Blocks
-
-This file describes steps to build OCCT libraries from sources using **Code::Blocks**, a cross-platform IDE, using 
-project files generated by OCCT legacy tool **genproj**.
-
-<h2>Configure</h2>
-
-Before building it is necessary to set up build environment.
-
-The environment is defined in the file *custom.sh* (on Linux and OS X) or *custom.bat* (on Windows) which can be edited 
-directly:
-
-* Add paths to includes of used third-party libraries in variable *CSF_OPT_INC*. 
-* Add paths to their binary libraries in variable  *CSF_OPT_LIB64*.
-* Set variable *SHORTCUT_HEADERS* to specify a method for population of folder *inc* by header files. Supported methods are:
-  * *Copy* - headers will be copied from *src*;
-  * *ShortCut* - short-cut header files will be created, redirecting to same-named header located in *src*;
-  * "HardLink* - hard links to headers located in *src* will be created.
-* For optional  third-party libraries, set corresponding environment variable <i>HAVE_<LIBRARY_NAME></i> to either *false*,  e.g.:
-~~~~~
-       export HAVE_GL2PS=false
-~~~~~
-
-Alternatively, or when *custom.sh* or *custom.bat* does not exist, you can launch **genconf** tool to configure
- environment interactively:
-
-@figure{/build/build_occt/images/genconf_linux.png}
-
-Click "Save" to store the specified configuration in *custom.sh* or *custom.bat* file.
-  
-<h2>Generate Projects</h2>
-
-Launch **genproj** tool with option *cbp* to update content of *inc* folder and generate project files after changes in 
-OCCT code affecting layout or composition of source files:
-
-~~~~~
-  $ cd /dev/OCCT/opencascade-7.0.0
-  $ ./genproj cbp
-~~~~~
-
-The generated Code::Blocks project are placed into subfolder *adm/&lt;OS&gt;/cbp*.
-
-@note To use **genproj** and **genconf** tools you need to have Tcl installed and accessible by PATH.
-
-<h2>Build</h2>
-
-To start **Code::Blocks**, launch script *codeblocks.sh*.
-
-To build all toolkits, click **Build->Build workspace** in the menu bar.
-
-To start *DRAWEXE*, which has been built with **Code::Blocks** on Mac OS X, run the script
-~~~~~
-   ./draw_cbp.sh cbp [d]
-~~~~~
-Option *d* is used if OCCT has been built in **Debug** mode.
--- a/dox/dev_guides/building/cmake/images/cmake_image000.png
+++ b/dox/dev_guides/building/cmake/images/cmake_image000.png
--- a/dox/dev_guides/building/cmake/images/cmake_image001.png
+++ b/dox/dev_guides/building/cmake/images/cmake_image001.png
--- a/dox/dev_guides/building/cmake/images/cmake_image002.png
+++ b/dox/dev_guides/building/cmake/images/cmake_image002.png
--- a/dox/dev_guides/building/cmake/images/cmake_image003.png
+++ b/dox/dev_guides/building/cmake/images/cmake_image003.png
--- a/dox/dev_guides/building/cmake/images/cmake_image004.png
+++ b/dox/dev_guides/building/cmake/images/cmake_image004.png
--- a/dox/dev_guides/building/code_blocks.md
+++ b/dox/dev_guides/building/code_blocks.md
@@ -0,0 +1,61 @@
+Building with Code::Blocks {#occt_dev_guides__building_code_blocks}
+==========================
+
+@tableofcontents
+
+@section build_codeblocks_intro General
+
+This file describes steps to build OCCT libraries from sources using **Code::Blocks**, a cross-platform IDE, using project files generated by OCCT legacy tool **genproj**.
+It can be used as an alternative to CMake build system (see @ref occt_dev_guides__building_cmake) for all supported platforms.
+
+@section build_codeblocks_3rdparty Third-party libraries
+
+Before building OCCT, make sure to have all the needed third-party libraries installed, see @ref occt_dev_guides__building.
+
+@section build_codeblocks_conf Configuration
+
+Before building it is necessary to set up build environment.
+
+The environment is defined in the file *custom.sh* (on Linux and OS X) or *custom.bat* (on Windows) which can be edited directly:
+
+* Add paths to includes of used third-party libraries in variable *CSF_OPT_INC*. 
+* Add paths to their binary libraries in variable  *CSF_OPT_LIB64*.
+* Set variable *SHORTCUT_HEADERS* to specify a method for population of folder *inc* by header files. Supported methods are:
+  * *Copy* - headers will be copied from *src*;
+  * *ShortCut* - short-cut header files will be created, redirecting to same-named header located in *src*;
+  * "HardLink* - hard links to headers located in *src* will be created.
+* For optional  third-party libraries, set corresponding environment variable <i>HAVE_<LIBRARY_NAME></i> to either *false*,  e.g.:
+~~~~~
+       export HAVE_FREEIMAGE=false
+~~~~~
+
+Alternatively, or when *custom.sh* or *custom.bat* does not exist, you can launch **genconf** tool to configure environment interactively:
+
+@figure{/dev_guides/building/3rdparty/images/genconf_linux.png}
+
+Click "Save" to store the specified configuration in *custom.sh* or *custom.bat* file.
+  
+@section build_codeblocks_gen Projects generation
+
+Launch **genproj** tool with option *cbp* to update content of *inc* folder and generate project files after changes in OCCT code affecting layout or composition of source files:
+
+~~~~~
+  $ cd /dev/OCCT/opencascade-7.0.0
+  $ ./genproj cbp
+~~~~~
+
+The generated Code::Blocks project are placed into subfolder *adm/&lt;OS&gt;/cbp*.
+
+@note To use **genproj** and **genconf** tools you need to have Tcl installed and accessible by PATH.
+
+@section build_codeblocks_build Building
+
+To start **Code::Blocks**, launch script *codeblocks.sh*.
+
+To build all toolkits, click **Build->Build workspace** in the menu bar.
+
+To start *DRAWEXE*, which has been built with **Code::Blocks** on Mac OS X, run the script
+~~~~~
+   ./draw.sh cbp [d]
+~~~~~
+Option *d* is used if OCCT has been built in **Debug** mode.
--- a/dox/dev_guides/building/msvc.md
+++ b/dox/dev_guides/building/msvc.md
@@ -0,0 +1,85 @@
+Building with MS Visual C++ {#occt_dev_guides__building_msvc}
+===========================
+
+@tableofcontents
+
+@section build_msvc_intro General
+
+This page describes steps to build OCCT libraries from a complete source archive on Windows with <b>MS Visual C++</b> using projects generated by **genproj** tool. 
+It is an alternative to use of CMake build system (see @ref occt_dev_guides__building_cmake).
+
+**genproj** is a legacy tool (originated from command "wgenproj" in WOK) for generation of Visual Studio, Code.Blocks, and XCode project files used for building Open CASCADE Technology.
+These project files are placed inside OCCT directory (in *adm* subfolder) and use relative paths, thus can be moved together with sources.
+
+The project files included in official distribution of OCCT are generated by this tool.
+If you have official distribution with project files included, you can use them directly without a need to call **genproj**.
+
+@section build_msvc_3rdparty Third-party libraries
+
+Before building OCCT, make sure to have all the required third-party libraries installed.
+
+The easiest way to install third-party libraries is to download archive with pre-built binaries, corresponding to version of Visual Studio you are using, from https://www.opencascade.com/content/3rd-party-components.
+
+You can also build third-party libraries from their sources, see @ref occt_dev_guides__building_3rdparty_windows for instructions.
+
+@section build_msvc_conf Configuration
+
+If you have Visual Studio projects already available (pre-installed or generated), you can edit file *custom.bat* manually to adjust the environment:
+
+* *VCVER* -- specification of format of project files, defining also version of Visual Studio to be used, and default name of the sub-folder for binaries:
+
+| VCVER     | Visual Studio version | Windows Platform                 | Binaries folder name |
+|-----------|-----------------------|----------------------------------|----------------------|
+| vc10      | 2010 (10)             | Desktop (Windows API)            | vc10 |
+| vc11      | 2012 (11)             | Desktop (Windows API)            | vc11 |
+| vc12      | 2013 (12)             | Desktop (Windows API)            | vc12 |
+| vc14      | 2015 (14)             | Desktop (Windows API)            | vc14 |
+| vc14-uwp  | 2015 (14)             | UWP (Universal Windows Platform) | vc14-uwp |
+| vc141     | 2017 (15)             | Desktop (Windows API)            | vc14 |
+| vc141-uwp | 2017 (15)             | UWP (Universal Windows Platform) | vc14-uwp |
+| vc142     | 2019 (16)             | Desktop (Windows API)            | vc14 |
+| vc142-uwp | 2019 (16)             | UWP (Universal Windows Platform) | vc14-uwp |
+
+* *ARCH* -- architecture (32 or 64), affects only *PATH* variable for execution
+* <i>HAVE_*</i> -- flags to enable or disable use of optional third-party products
+* <i>CSF_OPT_*</i> -- paths to search for includes and binaries of all used  third-party products
+* *SHORTCUT_HEADERS* -- defines method for population of folder *inc* by header files. Supported methods are:
+  * *Copy* - headers will be copied from *src*;
+  * *ShortCut* - short-cut header files will be created, redirecting to same-named header located in *src*;
+  * "HardLink* - hard links to headers located in *src* will be created.
+
+Alternatively, you can launch **genconf**, a GUI tool allowing to configure build options interactively.
+That tool will analyze your environment and propose you to choose available options:
+
+* Version of Visual Studio to be used (from the list of installed ones, detected by presence of environment variables like *VS100COMNTOOLS*).
+* Method to populate folder *inc* (short-cuts by default).
+* Location of third-party libraries (usually downloaded from OCCT web site, see above).
+* Path to common directory where third-party libraries are located (optional).
+* Paths to headers and binaries of the third-party libraries (found automatically basing on previous options; click button "Reset" to update).
+* Generation of PDB files within Release build ("Release with Debug info", false by default).
+
+@figure{/dev_guides/building/3rdparty/images/genconf_windows.png}
+
+Click "Save" to store the specified configuration in *custom.bat* file.
+  
+@section build_msvc_generate Projects generation
+
+Launch **genproj** to update content of *inc* folder and generate project files after changes in OCCT code affecting layout or composition of source files.
+
+@note To use **genproj** and **genconf** tools you need to have Tcl installed and accessible by PATH.
+If Tcl is not found, the tool may prompt you to enter the path to directory where Tcl can be found.
+ 
+~~~~~
+  $ genproj.bat
+~~~~~
+
+Note that if *custom.bat* is not present, **genproj** will start **genconf** to configure environment.
+
+@section build_msvc_build Building
+
+Launch *msvc.bat* to start Visual Studio with all necessary environment variables defined, and build the whole solution or required toolkits.
+
+Note: the MSVC project files are located in folders <i>adm\\msvc\\vc...</i>.
+Binaries are produced in *win32* or *win64* folders.
+
+To start DRAW, launch *draw.bat*.
--- a/dox/dev_guides/building/xcode.md
+++ b/dox/dev_guides/building/xcode.md
@@ -0,0 +1,88 @@
+Building with Xcode {#occt_dev_guides__building_xcode}
+===================
+
+@tableofcontents
+
+@section build_xcode_intro General
+
+This file describes steps to build OCCT libraries from sources on Mac OS X with **Xcode** projects, generated by OCCT legacy tool **genproj**.
+
+@section build_xcode_3rdparty Third-party libraries
+
+Before building OCCT, make sure to have all the needed third-party libraries installed.
+On OS X we recommend to use native libraries.
+You can also build third-party libraries from their sources, see @ref occt_dev_guides__building_3rdparty_osx for instructions.
+
+@section build_xcode_conf Configuration
+
+Before building it is necessary to set up build environment.
+
+The environment is defined in the file *custom.sh* which can be edited directly:
+
+* Add paths to includes of used third-party libraries in variable *CSF_OPT_INC* (use colon ":" as path separator).
+* Add paths to their binary libraries in variable  *CSF_OPT_LIB64*.
+* Set variable *SHORTCUT_HEADERS* to specify a method for population of folder *inc* by header files. Supported methods are:
+  * *Copy* - headers will be copied from *src*;
+  * *ShortCut* - short-cut header files will be created, redirecting to same-named header located in *src*;
+  * "HardLink* - hard links to headers located in *src* will be created.
+* For optional  third-party libraries, set corresponding environment variable <i>HAVE_<LIBRARY_NAME></i> to either *false*,  e.g.:
+~~~~~
+       export HAVE_FREEIMAGE=false
+~~~~~
+
+Alternatively, or when *custom.sh* does not exist, you can launch *genconf.sh* to configure environment interactively:
+
+@figure{/dev_guides/building/3rdparty/images/genconf_osx.png}
+
+Click "Save" to store the specified configuration in *custom.sh* file.
+  
+@section build_xcode_gen Projects generation
+
+Launch **genproj** tool to update content of *inc* folder and generate project files after changes in OCCT code affecting layout or composition of source files.
+
+@note To use **genproj** and **genconf** tools you need to have Tcl installed and accessible by PATH.
+
+For instance, in Terminal application:
+
+~~~~~
+  $ cd /dev/OCCT/opencascade-7.0.0
+  $ ./genproj
+~~~~~
+
+Option **-static** can be used with XCode to build static libraries.
+
+~~~~~
+  $ cd /dev/OCCT/opencascade-7.0.0
+  $ ./genproj xcd -static
+~~~~~
+
+@section build_xcode_build Building
+
+To start **Xcode**, launch script *xcode.sh*.
+
+To build a certain toolkit, select it in **Scheme** drop-down list in Xcode toolbar, press **Product** in the menu and click **Build** button. 
+
+To build the entire OCCT:
+* Create a new empty project (select **File -> New -> Project -> Empty project** in the menu; input the project name, e.g. *OCCT*; then click **Next** and **Create**).
+* Drag and drop the *OCCT* folder in the created *OCCT* project in the Project navigator.
+* Select **File -> New -> Target -> Aggregate** in the menu. 
+* Enter the project name (e.g. *OCCT*) and click **Finish**. The **Build Phases** tab will open.  
+* Click "+" button to add the necessary toolkits to the target project. It is possible to select all toolkits by pressing **Command+A** combination. 
+
+@section build_xcode_draw Launching DRAW
+
+To start *DRAWEXE*, which has been built with Xcode on Mac OS X, perform the following steps:
+
+1.Open Terminal application
+
+2.Enter <i>\<OCCT_ROOT_DIR\></i>:
+~~~~~
+   cd \<OCCT_ROOT_DIR\>
+~~~~~
+
+3.Run the script
+~~~~~
+   ./draw.sh xcd [d]
+~~~~~
+
+Option *d* is used if OCCT has been built in **Debug** mode.
--- a/dox/dev_guides/contribution/coding_rules.md
+++ b/dox/dev_guides/contribution/coding_rules.md
@@ -1,4 +1,4 @@
-Coding Rules {#occt_contribution__coding_rules}
+Coding Rules {#occt_dev_guides__coding_rules}
 ======================================

@tableofcontents
--- a/dox/contribution/contribution_workflow/contribution_workflow.md
+++ b/dox/contribution/contribution_workflow/contribution_workflow.md
@@ -1,4 +1,4 @@
-Contribution Workflow {#occt_contribution__contribution_workflow}
+Contribution Workflow {#occt_dev_guides__contribution_workflow}
 ====================================
@tableofcontents 

@@ -144,7 +144,7 @@ Change of layout or re-formatting of the existing code is allowed only in the pa

@note If deemed useful, re-formatting or cosmetic changes affecting considerable parts of the code can be made within a dedicated issue.

-The changes should comply with the OCCT @ref occt_contribution__coding_rules "Codng Rules". 
+The changes should comply with the OCCT @ref occt_dev_guides__coding_rules "Codng Rules". 
 It is especially important to comment the code properly so that other people can understand it easier.

 The modification should be tested by running OCCT tests (on the platform and scope available to **Developer**) and ensuring absence of regressions.
@@ -163,9 +163,9 @@ When the test case cannot be provided for any reason, the maximum possible infor

 If the change affects a functionality described in @ref user_guides "User Guides", the corresponding user guide should be updated to reflect the change.

-If the change affects OCCT test system, build environment, or development tools described in @ref build_upgrade "Build, Debug and Upgrade" or @ref contribution "Contribution", the corresponding guide should be updated.
+If the change affects OCCT test system, build environment, or development tools described in @ref dev_guides "Developer Guides", the corresponding guide should be updated.
 
-The changes that break compatibility with the previous versions of OCCT (i.e. affecting API or behavior of existing functionality in the way that may require update of existing applications based on an earlier official release of OCCT to work correctly) should be described in the document @ref occt__upgrade "Upgrade from previous OCCT versions".
+The changes that break compatibility with the previous versions of OCCT (i.e. affecting API or behavior of existing functionality in the way that may require update of existing applications based on an earlier official release of OCCT to work correctly) should be described in the document @ref occt_dev_guides__upgrade "Upgrade from previous OCCT versions".
 It is recommended to add a sub-section for each change described.
 The description should provide the explanation of the incompatibility introduced by the change, and describe how it can be resolved (at least, in known situations).
 When feasible, the automatic upgrade procedure (adm/upgrade.tcl) can be extended by a new option to perform the required upgrade of the dependent code automatically. 
@@ -183,7 +183,7 @@ In case if the fix is implemented on the previous release of OCCT, the branch ca
 The branch name should be composed of letters **CR** (abbreviation of "Change Request") followed by the issue ID number (without leading zeros). 
 It is possible to add an optional suffix to the branch name after the issue ID, e.g. to distinguish between several versions of the fix (see @ref occt_contribution_nonstd_rebase).

-See @ref occt_contribution__git_guide "Guide to using GIT" for help.
+See @ref occt_dev_guides__git_guide "Guide to using GIT" for help.

@note When a branch with the name given according to the above rule is pushed to Git, a note is automatically added to the corresponding issue in Mantis, indicating the person who has made the push, the commit hash, and (for new commits) the description.
  
@@ -226,7 +226,7 @@ The possible variants are:

@subsection occt_contribution_workflow_review Code review

-The **Reviewer** analyzes the proposed solution for applicability in accordance with OCCT @ref occt_contribution__coding_rules "Coding Rules" and examines all changes in the sources, test case(s), and documentation to detect obvious and possible errors, misprints, or violations of the coding style. 
+The **Reviewer** analyzes the proposed solution for applicability in accordance with OCCT @ref occt_dev_guides__coding_rules "Coding Rules" and examines all changes in the sources, test case(s), and documentation to detect obvious and possible errors, misprints, or violations of the coding style. 

 If the Reviewer detects some problems, he can either:

--- a/dox/contribution/contribution_workflow/images/OCCT_ContributionWorkflow_V3_image001.svg
+++ b/dox/contribution/contribution_workflow/images/OCCT_ContributionWorkflow_V3_image001.svg
--- a/dox/contribution/contribution_workflow/images/OCCT_ContributionWorkflow_V3_image002.png
+++ b/dox/contribution/contribution_workflow/images/OCCT_ContributionWorkflow_V3_image002.png
--- a/dox/dev_guides/debug/debug.md
+++ b/dox/dev_guides/debug/debug.md
@@ -1,4 +1,4 @@
-Debugging tools and hints {#occt__debug}
+Debugging tools and hints {#occt_dev_guides__debug}
 =========================

@tableofcontents
@@ -150,8 +150,7 @@ Steps to prepare dump of the object into json:
 1. Create method <b>DumpJson</b>. The method should accept the output stream and the depth for the fields dump.
 Depth, equal to zero means that only fields of this class should be dumped. Default value -1 means that whole tree of dump will be built recursively calling dump of all fields.

-2. Put into the first row of the method <b>OCCT_DUMP_CLASS_BEGIN</b> or <b>OCCT_DUMP_TRANSIENT_CLASS_BEGIN</b> (for Standard_Transient objects).
-This macro appends class name into output stream.
+2. Put into the first row of the method <b>OCCT_DUMP_CLASS_BEGIN</b>. This macro creates a local variable, that will open Json structure on start, and close on exit from this method.

 3. Add several macro to store field values.

@@ -369,53 +368,3 @@ Each counter has its name shown when the collected statistics are printed.
 In DRAW, use command *dperf* to print all performance statistics.

 Note that performance counters are not thread-safe.
-
-@section occt_debug_sanitizers Use of compiler sanitizers
-
-GCC and Clang compilers provide options for instrumenting the code with the tools intended for detection of run-time errors, called sanitizers.
-This section provides some hints for using sanitizers for detecting possible errors in OCCT code.
-
-@subsection occt_debug_sanitizers_linux Linux
-
-Example of configuration steps for Ubuntu:
-
-1. In CMake configuration:
-
-  - Use up-to-date version of the GCC or CLang compiler; make sure that if CMAKE_CXX_COMPILER is set to C++ compiler (e.g. "clang++-6.0") and CMAKE_C_COMPILER is set to C compiler (e.g. "clang-6.0")
-  - Ensure that CMAKE_LINKER is set to the C++ linker bundled with compiler (e.g. clang++-6.0); this is important to avoid linking problems
-  - For building with Address sanitizer, set CMAKE_CXX_FLAGS and CMAKE_C_FLAGS to "-fsanitize=address -fno-omit-frame-pointer -fno-optimize-sibling-calls"
-  - For building with Undefined Behavior sanitizer, set CMAKE_CXX_FLAGS and CMAKE_C_FLAGS to "-fsanitize=undefined -fno-omit-frame-pointer -fno-optimize-sibling-calls"
-  - Set CMAKE_BUILD_TYPE to RelWithDebInfo to get more informative stack traces on errors
-
-2. Build as usual (make)
-
-  Be prepared that it works much slower than normal build and consumes more disk space.
-
-3. Before running executable, make sure that "llvm-symbolizer" is in PATH; this is necessary to get human-readable stack traces. The tool must have exactly that name.
-
-  If it is installed in common folder (/usr/bin or similar) with different name, one option is to create a symlink, for instance:
-> sudo ln -s /usr/bin/llvm-symbolizer-6.0 /usr/bin/llvm-symbolizer
-
-  Alternatively, add directory where actual llvm-symbolizer is located (such as /usr/lib/llvm-6.0/bin) to the PATH variable. 
-
-4. Set environment variable to disable memory leaks detection (they seem to be reported for every global variable at exit, not much useful):
-> export ASAN_OPTIONS=detect_leaks=0
-
-5. Set environment variable CSF_CPULIMIT_FACTOR to reasonably large number to increase the time limits for program execution (used by OCCT tests) to compensate the performance penalty introduced by sanitizers:
-> export CSF_CPULIMIT_FACTOR=20
-
-6. When using UBSan, set environment variable UBSAN_OPTIONS to get stack traces:
-> export UBSAN_OPTIONS=print_stacktrace=1
-
-7. Run DRAW and perform tests as usual, keeping in mind that running with sanitizer is much heavier than normal build:
-> ./draw.sh relwithdeb  <br>
-> Draw[]> testgrid -parallel 0
-
-Note that when running tests under sanitizers, behavior may be different.
-Known problems (as of CLang 6.0) are:
- Software signals (access violation etc.) are not handled
- Heap memory usage always reports zero
-
-@subsection occt_debug_sanitizers_windows Windows
-
-Though CLang toolset is available in Visual Studio 2015 and newer, sanitizer do not seem to be available out of the box (last tested with VS 2019 16.2.3).
--- a/Show More
+++ b/Show More