## if(FLAGS_ALREADY_INCLUDED) return() endif() set(FLAGS_ALREADY_INCLUDED 1) # force option /fp:precise for Visual Studio projects. # # Note that while this option is default for MSVC compiler, Visual Studio # project can be switched later to use Intel Compiler (ICC). # Enforcing -fp:precise ensures that in such case ICC will use correct # option instead of its default -fp:fast which is harmful for OCCT. if (MSVC) set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /fp:precise") set (CMAKE_C_FLAGS "${CMAKE_C_FLAGS} /fp:precise") endif() # add SSE2 option for old MSVC compilers (VS 2005 - 2010, 32 bit only) if (NOT CMAKE_SIZEOF_VOID_P EQUAL 8) if (MSVC AND ((MSVC_VERSION EQUAL 1400) OR (MSVC_VERSION EQUAL 1500) OR (MSVC_VERSION EQUAL 1600))) set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /arch:SSE2") set (CMAKE_C_FLAGS "${CMAKE_C_FLAGS} /arch:SSE2") endif() endif() if (MSVC) add_definitions (-D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_DEPRECATE) else() set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fexceptions -fPIC") set (CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fexceptions -fPIC") add_definitions(-DOCC_CONVERT_SIGNALS) endif() # enable structured exceptions for MSVC string (REGEX MATCH "EHsc" ISFLAG "${CMAKE_CXX_FLAGS}") if (ISFLAG) string (REGEX REPLACE "EHsc" "EHa" CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}") elseif (MSVC) set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /EHa") endif() # remove _WINDOWS flag if it exists string (REGEX MATCH "/D_WINDOWS" IS_WINDOWSFLAG "${CMAKE_CXX_FLAGS}") if (IS_WINDOWSFLAG) message (STATUS "Info: /D_WINDOWS has been removed from CMAKE_CXX_FLAGS") string (REGEX REPLACE "/D_WINDOWS" "" CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}") endif() # remove WIN32 flag if it exists string (REGEX MATCH "/DWIN32" IS_WIN32FLAG "${CMAKE_CXX_FLAGS}") if (IS_WIN32FLAG) message (STATUS "Info: /DWIN32 has been removed from CMAKE_CXX_FLAGS") string (REGEX REPLACE "/DWIN32" "" CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}") endif() # remove _WINDOWS flag if it exists string (REGEX MATCH "/D_WINDOWS" IS_WINDOWSFLAG "${CMAKE_C_FLAGS}") if (IS_WINDOWSFLAG) message (STATUS "Info: /D_WINDOWS has been removed from CMAKE_C_FLAGS") string (REGEX REPLACE "/D_WINDOWS" "" CMAKE_C_FLAGS "${CMAKE_C_FLAGS}") endif() # remove WIN32 flag if it exists string (REGEX MATCH "/DWIN32" IS_WIN32FLAG "${CMAKE_C_FLAGS}") if (IS_WIN32FLAG) message (STATUS "Info: /DWIN32 has been removed from CMAKE_C_FLAGS") string (REGEX REPLACE "/DWIN32" "" CMAKE_C_FLAGS "${CMAKE_C_FLAGS}") endif() # remove DEBUG flag if it exists string (REGEX MATCH "-DDEBUG" IS_DEBUG_CXX "${CMAKE_CXX_FLAGS_DEBUG}") if (IS_DEBUG_CXX) message (STATUS "Info: -DDEBUG has been removed from CMAKE_CXX_FLAGS_DEBUG") string (REGEX REPLACE "-DDEBUG" "" CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG}") endif() string (REGEX MATCH "-DDEBUG" IS_DEBUG_C "${CMAKE_C_FLAGS_DEBUG}") if (IS_DEBUG_C) message (STATUS "Info: -DDEBUG has been removed from CMAKE_C_FLAGS_DEBUG") string (REGEX REPLACE "-DDEBUG" "" CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG}") endif() # enable parallel compilation on MSVC 9 and above if (MSVC AND (MSVC_VERSION GREATER 1400)) set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /MP") endif() # generate a single response file which enlist all of the object files if (NOT DEFINED CMAKE_C_USE_RESPONSE_FILE_FOR_OBJECTS) SET(CMAKE_C_USE_RESPONSE_FILE_FOR_OBJECTS 1) endif() if (NOT DEFINED CMAKE_CXX_USE_RESPONSE_FILE_FOR_OBJECTS) SET(CMAKE_CXX_USE_RESPONSE_FILE_FOR_OBJECTS 1) endif() # increase compiler warnings level (-W4 for MSVC, -Wextra for GCC) if (MSVC) if (CMAKE_CXX_FLAGS MATCHES "/W[0-4]") string (REGEX REPLACE "/W[0-4]" "/W4" CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}") else() set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /W4") endif() elseif (CMAKE_COMPILER_IS_GNUCC OR CMAKE_COMPILER_IS_GNUCXX OR "${CMAKE_CXX_COMPILER_ID}" STREQUAL "Clang") set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall -Wextra") if (BUILD_SHARED_LIBS) if (APPLE) set (CMAKE_SHARED_LINKER_FLAGS "-lm ${CMAKE_SHARED_LINKER_FLAGS}") elseif(NOT WIN32) set (CMAKE_SHARED_LINKER_FLAGS "-lm ${CMAKE_SHARED_LINKER_FLAGS}") endif() endif() endif() if ("x${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}") endif() # Optimize size of binaries set (CMAKE_SHARED_LINKER_FLAGS "-Wl,-s ${CMAKE_SHARED_LINKER_FLAGS}") elseif(MINGW) 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 (DEFINED CMAKE_COMPILER_IS_GNUCXX) # Require C++11 set (CMAKE_CXX_FLAGS "-std=c++0x ${CMAKE_CXX_FLAGS}") # Optimize size of binaries set (CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -s") set (CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE} -s") endif() if (BUILD_RELEASE_DISABLE_EXCEPTIONS) set (CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -DNo_Exception") set (CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE} -DNo_Exception") endif()