mirror of
https://git.dev.opencascade.org/repos/occt.git
synced 2025-04-03 17:56:21 +03:00
1bd04b5a02
Build tools are updated to support building with Visual Studion 2019 toolset ClangCL (LLVM clang-cl): - In CMake builds, use of unsupported option "-std=c++0x" is avoided - Tool genconf recognizes availability of ClangCL toolset and proposes it in the list - Tool genproj recognizes new compiler specification VCVER=vclang and generates VS 2019 projects for it Note that vclang configuration puts binaries to folder "vc14" as it is compatible with vc14 CRT. Code is updated to build with Clang for Windows without errors and warnings: - In BVH classes, pure virtual destructors are replaced by empty ones, to avoid bogus compiler warning - In .lex files, pragmas are added to disable warnings in parser code - In OSD, signature of function _osd_wnt_set_error() is corrected to avoid warning on incorrect use of va_args (undefined behavior) - In OSD_Host, OSD_Parallel_TBB, warnings on usage of deprecated function are disabled - In Quantity_ColorRGBA and ViewerTest_CmdParser, incorrect use of predefined macro __FUNCTION__ assuming it was a string literal is avoided - In Standard_Macro.hxx, code is reordered to handle Clang for Windows appropriately - In AdvApp2Var_SysBase.hxx, inclusion of obsolete (MSVC-specific) header file is replaced by Standard_TypeDef.hxx - In Standard_ErrorHandler.hxx, empty statements added to avoid warning on unused class fields - In IVtkDraw and ViewerTest, interface is corrected to use actual type avoiding unnecessary type casts Off-topic: corrections of some errors (uninitialized class fields) reported by VS Code Analysis in TKernel
152 lines
5.7 KiB
CMake
152 lines
5.7 KiB
CMake
##
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if(FLAGS_ALREADY_INCLUDED)
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return()
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endif()
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set(FLAGS_ALREADY_INCLUDED 1)
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# force option /fp:precise for Visual Studio projects.
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#
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# Note that while this option is default for MSVC compiler, Visual Studio
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# project can be switched later to use Intel Compiler (ICC).
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# Enforcing -fp:precise ensures that in such case ICC will use correct
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# option instead of its default -fp:fast which is harmful for OCCT.
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if (MSVC)
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set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /fp:precise")
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set (CMAKE_C_FLAGS "${CMAKE_C_FLAGS} /fp:precise")
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endif()
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# add SSE2 option for old MSVC compilers (VS 2005 - 2010, 32 bit only)
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if (NOT CMAKE_SIZEOF_VOID_P EQUAL 8)
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if (MSVC AND ((MSVC_VERSION EQUAL 1400) OR (MSVC_VERSION EQUAL 1500) OR (MSVC_VERSION EQUAL 1600)))
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set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /arch:SSE2")
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set (CMAKE_C_FLAGS "${CMAKE_C_FLAGS} /arch:SSE2")
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endif()
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endif()
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if (MSVC)
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add_definitions (-D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_DEPRECATE)
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else()
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set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fexceptions -fPIC")
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set (CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fexceptions -fPIC")
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add_definitions(-DOCC_CONVERT_SIGNALS)
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endif()
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# enable structured exceptions for MSVC
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string (REGEX MATCH "EHsc" ISFLAG "${CMAKE_CXX_FLAGS}")
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if (ISFLAG)
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string (REGEX REPLACE "EHsc" "EHa" CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}")
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elseif (MSVC)
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set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /EHa")
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endif()
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# remove _WINDOWS flag if it exists
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string (REGEX MATCH "/D_WINDOWS" IS_WINDOWSFLAG "${CMAKE_CXX_FLAGS}")
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if (IS_WINDOWSFLAG)
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message (STATUS "Info: /D_WINDOWS has been removed from CMAKE_CXX_FLAGS")
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string (REGEX REPLACE "/D_WINDOWS" "" CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}")
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endif()
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# remove WIN32 flag if it exists
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string (REGEX MATCH "/DWIN32" IS_WIN32FLAG "${CMAKE_CXX_FLAGS}")
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if (IS_WIN32FLAG)
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message (STATUS "Info: /DWIN32 has been removed from CMAKE_CXX_FLAGS")
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string (REGEX REPLACE "/DWIN32" "" CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}")
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endif()
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# remove _WINDOWS flag if it exists
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string (REGEX MATCH "/D_WINDOWS" IS_WINDOWSFLAG "${CMAKE_C_FLAGS}")
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if (IS_WINDOWSFLAG)
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message (STATUS "Info: /D_WINDOWS has been removed from CMAKE_C_FLAGS")
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string (REGEX REPLACE "/D_WINDOWS" "" CMAKE_C_FLAGS "${CMAKE_C_FLAGS}")
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endif()
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# remove WIN32 flag if it exists
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string (REGEX MATCH "/DWIN32" IS_WIN32FLAG "${CMAKE_C_FLAGS}")
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if (IS_WIN32FLAG)
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message (STATUS "Info: /DWIN32 has been removed from CMAKE_C_FLAGS")
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string (REGEX REPLACE "/DWIN32" "" CMAKE_C_FLAGS "${CMAKE_C_FLAGS}")
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endif()
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# remove DEBUG flag if it exists
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string (REGEX MATCH "-DDEBUG" IS_DEBUG_CXX "${CMAKE_CXX_FLAGS_DEBUG}")
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if (IS_DEBUG_CXX)
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message (STATUS "Info: -DDEBUG has been removed from CMAKE_CXX_FLAGS_DEBUG")
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string (REGEX REPLACE "-DDEBUG" "" CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG}")
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endif()
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string (REGEX MATCH "-DDEBUG" IS_DEBUG_C "${CMAKE_C_FLAGS_DEBUG}")
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if (IS_DEBUG_C)
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message (STATUS "Info: -DDEBUG has been removed from CMAKE_C_FLAGS_DEBUG")
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string (REGEX REPLACE "-DDEBUG" "" CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG}")
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endif()
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# enable parallel compilation on MSVC 9 and above
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if (MSVC AND (MSVC_VERSION GREATER 1400))
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set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /MP")
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endif()
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# generate a single response file which enlist all of the object files
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if (NOT DEFINED CMAKE_C_USE_RESPONSE_FILE_FOR_OBJECTS)
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SET(CMAKE_C_USE_RESPONSE_FILE_FOR_OBJECTS 1)
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endif()
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if (NOT DEFINED CMAKE_CXX_USE_RESPONSE_FILE_FOR_OBJECTS)
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SET(CMAKE_CXX_USE_RESPONSE_FILE_FOR_OBJECTS 1)
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endif()
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# increase compiler warnings level (-W4 for MSVC, -Wextra for GCC)
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if (MSVC)
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if (CMAKE_CXX_FLAGS MATCHES "/W[0-4]")
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string (REGEX REPLACE "/W[0-4]" "/W4" CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}")
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else()
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set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /W4")
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endif()
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elseif (CMAKE_COMPILER_IS_GNUCC OR CMAKE_COMPILER_IS_GNUCXX OR "${CMAKE_CXX_COMPILER_ID}" STREQUAL "Clang")
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set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall -Wextra")
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if (BUILD_SHARED_LIBS)
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if (APPLE)
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set (CMAKE_SHARED_LINKER_FLAGS "-lm ${CMAKE_SHARED_LINKER_FLAGS}")
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elseif(NOT WIN32)
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set (CMAKE_SHARED_LINKER_FLAGS "-lm ${CMAKE_SHARED_LINKER_FLAGS}")
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endif()
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endif()
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endif()
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if(MINGW)
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# Set default release optimization option to O2 instead of O3, since in
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# some OCCT related examples, this gives significantly smaller binaries
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# at comparable performace with MinGW-w64.
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string (REGEX MATCH "-O3" IS_O3_CXX "${CMAKE_CXX_FLAGS_RELEASE}")
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if (IS_O3_CXX)
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string (REGEX REPLACE "-O3" "-O2" CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE}")
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else()
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set (CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -O2")
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endif()
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set (CMAKE_CXX_FLAGS "-std=gnu++0x ${CMAKE_CXX_FLAGS}")
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add_definitions(-D_WIN32_WINNT=0x0501)
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# workaround bugs in mingw with vtable export
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set (CMAKE_SHARED_LINKER_FLAGS "-Wl,--export-all-symbols")
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elseif ("x${CMAKE_CXX_COMPILER_ID}" STREQUAL "xClang")
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if (APPLE)
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# CLang can be used with both libstdc++ and libc++, however on OS X libstdc++ is outdated.
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set (CMAKE_CXX_FLAGS "-std=c++0x -stdlib=libc++ ${CMAKE_CXX_FLAGS}")
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elseif(NOT WIN32)
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# CLang for Windows (at least CLang 8.0 distributed with VS 2019)
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# does not support option "-std=c++0x"
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set (CMAKE_CXX_FLAGS "-std=c++0x ${CMAKE_CXX_FLAGS}")
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endif()
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elseif (DEFINED CMAKE_COMPILER_IS_GNUCXX)
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set (CMAKE_CXX_FLAGS "-std=c++0x ${CMAKE_CXX_FLAGS}")
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endif()
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# Optimize size of binaries
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if (CMAKE_COMPILER_IS_GNUCC OR CMAKE_COMPILER_IS_GNUCXX OR MINGW)
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set (CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -s")
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set (CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE} -s")
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endif()
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if (BUILD_RELEASE_DISABLE_EXCEPTIONS)
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set (CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -DNo_Exception")
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set (CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE} -DNo_Exception")
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endif()
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