diff --git a/README-ASRV.txt b/README-ASRV.txt
new file mode 100644
index 0000000000..61660bffbd
--- /dev/null
+++ b/README-ASRV.txt
@@ -0,0 +1,31 @@
+Instruction for building OCCT for ASRV
+======================================
+
+Build using regular native compiler
+-----------------------------------
+
+1. Make sure the directory 3rdparty is next to occt. It must contain the following products:
+    freetype
+    tcltk
+2. Change current directory to adm/scripts.
+3. On Windows run the script cmake_gen.bat.
+   On Linux run 'cmake_gen.sh' for release build and 'cmake_gen.sh -d' for debug build.
+4. Go to build directory and build and install OCCT.
+   On Windows run:
+    build.bat
+    build.bat vc14 64 d
+    install.bat
+    install.bat vc14 64 d
+   On Linux run:
+    make -j4 install
+
+Build using Emscripten to generate libs for Web assembly
+--------------------------------------------------------
+
+1. Make sure you have installed Emscripten. For that you can make sure occ-web3d directory 
+   is next to occt. It must contain fips\fips-sdks\emsdk.
+2. Make sure the directory 3rdparty is next to occt. It must contain the following products:
+    freetype wasm build
+3. Change current directory to adm/scripts.
+4. Run the script wasm_build.bat (wasm_build.sh on Linux).
+5. Copy installed files from work/wasm to the 3rdparty under occt77-wasm.
diff --git a/adm/scripts/.gitignore b/adm/scripts/.gitignore
deleted file mode 100644
index 3e9b15d9a3..0000000000
--- a/adm/scripts/.gitignore
+++ /dev/null
@@ -1,2 +0,0 @@
-*custom.bat
-*custom.sh
diff --git a/adm/scripts/cmake_custom.bat b/adm/scripts/cmake_custom.bat
new file mode 100644
index 0000000000..47aaf44bfc
--- /dev/null
+++ b/adm/scripts/cmake_custom.bat
@@ -0,0 +1,48 @@
+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%"
+set "INSTALL_DIR=%SrcRoot%\..\3rdparty\occt77-vc14-64"
+
+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 set BUILD_FORCE_RelWithDebInfo=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
+set USE_FREEIMAGE=ON
+rem set USE_GLES2=OFF
+rem set USE_RAPIDJSON=OFF
+rem set USE_DRACO=OFF
+rem set USE_TBB=OFF
+rem set USE_VTK=OFF
diff --git a/adm/scripts/cmake_custom.sh b/adm/scripts/cmake_custom.sh
new file mode 100644
index 0000000000..31183848b0
--- /dev/null
+++ b/adm/scripts/cmake_custom.sh
@@ -0,0 +1,43 @@
+# 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/../3rdparty/occt77"
+
+#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=ON
+#USE_GLES2=OFF
+#USE_RAPIDJSON=OFF
+#USE_DRACO=OFF
+#USE_TBB=OFF
+#USE_VTK=OFF
+
+# This is to add any additional arguments to cmake
+#AUX_ARGS=
diff --git a/adm/scripts/wasm_custom.bat b/adm/scripts/wasm_custom.bat
new file mode 100644
index 0000000000..c7696a0a76
--- /dev/null
+++ b/adm/scripts/wasm_custom.bat
@@ -0,0 +1,29 @@
+rem Environment configuration template for wasm_build.bat (to be renamed as wasm_custom.bat)
+set "EMSDK_ROOT=%aCasSrc%\..\occ-web3d\fips\fips-sdks\emsdk"
+set "aFreeType=%aCasSrc%\..\3rdparty\freetype-2.7.1-wasm"
+rem set "aRapidJson=%aCasSrc%\..\3rdparty\rapidjson-1.1.0"
+rem set "aDraco=%aCasSrc%\..\3rdparty\draco-1.4.1-wasm32"
+rem set "aCmakeBin=%ProgramW6432%\CMake\bin"
+
+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"
+set "toPack=0"
+set "toDebug=0"
+set "toBuildSample=0"
+rem Source map base (should point to server where C++ sources will be copied)
+rem enables -g4 debug building option for WebGL sample and allows navigating C++ source code within JavaScript debugger.
+rem set "sourceMapBase=http://localhost:9090/"
+
+set "BUILD_ModelingData=OFF"
+set "BUILD_ModelingAlgorithms=OFF"
+rem set "BUILD_Visualization=ON"
+set "BUILD_ApplicationFramework=OFF"
+set "BUILD_DataExchange=OFF"
+
+set "USE_RAPIDJSON=OFF"
+set "USE_DRACO=OFF"
+set "USE_PTHREADS=OFF"
diff --git a/adm/scripts/wasm_custom.sh b/adm/scripts/wasm_custom.sh
new file mode 100644
index 0000000000..1b23034858
--- /dev/null
+++ b/adm/scripts/wasm_custom.sh
@@ -0,0 +1,18 @@
+# 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/../occ-web3d/fips/fips-sdks/emsdk"
+
+# Uncomment to customize building steps
+#export aBuildRoot=work
+#export toCMake=1
+#export toClean=0
+#export toMake=1
+#export toInstall=1
+
+export BUILD_ModelingData=OFF
+export BUILD_ModelingAlgorithms=OFF
+#export BUILD_Visualization=ON
+export BUILD_ApplicationFramework=OFF
+export BUILD_DataExchange=OFF
+
+export aNbJobs=10