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Open Source Computer Vision Library
https://opencv.org/
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199 lines
8.0 KiB
199 lines
8.0 KiB
if (WIN32 AND CMAKE_GENERATOR MATCHES "(MinGW)|(MSYS)") |
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set(CMAKE_CXX_FLAGS_RELEASE "-O2 -DNDEBUG" CACHE STRING "") |
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endif() |
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if(MSVC) |
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if(CMAKE_CXX_FLAGS STREQUAL CMAKE_CXX_FLAGS_INIT) |
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# override cmake default exception handling option |
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string(REPLACE "/EHsc" "/EHa" CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}") |
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set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}" CACHE STRING "Flags used by the compiler during all build types." FORCE) |
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endif() |
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endif() |
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set(OPENCV_EXTRA_C_FLAGS "") |
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set(OPENCV_EXTRA_C_FLAGS_RELEASE "") |
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set(OPENCV_EXTRA_C_FLAGS_DEBUG "") |
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set(OPENCV_EXTRA_EXE_LINKER_FLAGS "") |
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set(OPENCV_EXTRA_EXE_LINKER_FLAGS_RELEASE "") |
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set(OPENCV_EXTRA_EXE_LINKER_FLAGS_DEBUG "") |
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if(MSVC) |
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set(OPENCV_EXTRA_C_FLAGS "${OPENCV_EXTRA_C_FLAGS} /D _CRT_SECURE_NO_DEPRECATE /D _CRT_NONSTDC_NO_DEPRECATE /D _SCL_SECURE_NO_WARNINGS") |
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# 64-bit portability warnings, in MSVC80 |
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if(MSVC80) |
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set(OPENCV_EXTRA_C_FLAGS "${OPENCV_EXTRA_C_FLAGS} /Wp64") |
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endif() |
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if(BUILD_WITH_DEBUG_INFO) |
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set(OPENCV_EXTRA_EXE_LINKER_FLAGS_RELEASE "${OPENCV_EXTRA_EXE_LINKER_FLAGS_RELEASE} /debug") |
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endif() |
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# Remove unreferenced functions: function level linking |
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set(OPENCV_EXTRA_C_FLAGS "${OPENCV_EXTRA_C_FLAGS} /Gy") |
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if(NOT MSVC_VERSION LESS 1400) |
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set(OPENCV_EXTRA_C_FLAGS "${OPENCV_EXTRA_C_FLAGS} /bigobj") |
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endif() |
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if(BUILD_WITH_DEBUG_INFO) |
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set(OPENCV_EXTRA_C_FLAGS_RELEASE "${OPENCV_EXTRA_C_FLAGS_RELEASE} /Zi") |
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endif() |
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endif() |
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if(CMAKE_COMPILER_IS_GNUCXX) |
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# High level of warnings. |
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set(OPENCV_EXTRA_C_FLAGS "${OPENCV_EXTRA_C_FLAGS} -Wall") |
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# The -Wno-long-long is required in 64bit systems when including sytem headers. |
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if(X86_64) |
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set(OPENCV_EXTRA_C_FLAGS "${OPENCV_EXTRA_C_FLAGS} -Wno-long-long") |
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endif() |
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# We need pthread's |
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if(UNIX AND NOT ANDROID) |
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set(OPENCV_EXTRA_C_FLAGS "${OPENCV_EXTRA_C_FLAGS} -pthread") |
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endif() |
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if(OPENCV_WARNINGS_ARE_ERRORS) |
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set(OPENCV_EXTRA_C_FLAGS "${OPENCV_EXTRA_C_FLAGS} -Werror") |
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endif() |
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if(X86 AND NOT MINGW64 AND NOT X86_64 AND NOT APPLE) |
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set(OPENCV_EXTRA_C_FLAGS "${OPENCV_EXTRA_C_FLAGS} -march=i686") |
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endif() |
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# Other optimizations |
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if(ENABLE_OMIT_FRAME_POINTER) |
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set(OPENCV_EXTRA_C_FLAGS_RELEASE "${OPENCV_EXTRA_C_FLAGS_RELEASE} -fomit-frame-pointer") |
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else() |
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set(OPENCV_EXTRA_C_FLAGS_RELEASE "${OPENCV_EXTRA_C_FLAGS_RELEASE} -fno-omit-frame-pointer") |
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endif() |
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if(ENABLE_FAST_MATH) |
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set(OPENCV_EXTRA_C_FLAGS_RELEASE "${OPENCV_EXTRA_C_FLAGS_RELEASE} -ffast-math") |
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endif() |
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if(ENABLE_POWERPC) |
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set(OPENCV_EXTRA_C_FLAGS_RELEASE "${OPENCV_EXTRA_C_FLAGS_RELEASE} -mcpu=G3 -mtune=G5") |
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endif() |
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if(ENABLE_SSE) |
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set(OPENCV_EXTRA_C_FLAGS_RELEASE "${OPENCV_EXTRA_C_FLAGS_RELEASE} -msse") |
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endif() |
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if(ENABLE_SSE2) |
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set(OPENCV_EXTRA_C_FLAGS_RELEASE "${OPENCV_EXTRA_C_FLAGS_RELEASE} -msse2") |
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endif() |
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# SSE3 and further should be disabled under MingW because it generates compiler errors |
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if(NOT MINGW) |
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if(ENABLE_SSE3) |
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set(OPENCV_EXTRA_C_FLAGS_RELEASE "${OPENCV_EXTRA_C_FLAGS_RELEASE} -msse3") |
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endif() |
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if(${CMAKE_OPENCV_GCC_VERSION_NUM} GREATER 402) |
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set(HAVE_GCC43_OR_NEWER 1) |
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endif() |
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if(${CMAKE_OPENCV_GCC_VERSION_NUM} GREATER 401) |
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set(HAVE_GCC42_OR_NEWER 1) |
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endif() |
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if(HAVE_GCC42_OR_NEWER OR APPLE) |
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if(ENABLE_SSSE3) |
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set(OPENCV_EXTRA_C_FLAGS_RELEASE "${OPENCV_EXTRA_C_FLAGS_RELEASE} -mssse3") |
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endif() |
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if(HAVE_GCC43_OR_NEWER) |
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if(ENABLE_SSE41) |
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set(OPENCV_EXTRA_C_FLAGS_RELEASE "${OPENCV_EXTRA_C_FLAGS_RELEASE} -msse4.1") |
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endif() |
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if(ENABLE_SSE42) |
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set(OPENCV_EXTRA_C_FLAGS_RELEASE "${OPENCV_EXTRA_C_FLAGS_RELEASE} -msse4.2") |
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endif() |
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endif() |
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endif() |
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endif(NOT MINGW) |
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if(X86 OR X86_64) |
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if(NOT APPLE AND CMAKE_SIZEOF_VOID_P EQUAL 4) |
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set(OPENCV_EXTRA_C_FLAGS_RELEASE "${OPENCV_EXTRA_C_FLAGS_RELEASE} -mfpmath=387") |
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endif() |
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endif() |
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# Profiling? |
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if(ENABLE_PROFILING) |
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set(OPENCV_EXTRA_C_FLAGS_RELEASE "${OPENCV_EXTRA_C_FLAGS_RELEASE} -pg -g") |
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elseif(NOT APPLE AND NOT ANDROID) |
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# Remove unreferenced functions: function level linking |
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set(OPENCV_EXTRA_C_FLAGS "${OPENCV_EXTRA_C_FLAGS} -ffunction-sections") |
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endif() |
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set(OPENCV_EXTRA_C_FLAGS_RELEASE "${OPENCV_EXTRA_C_FLAGS_RELEASE} -DNDEBUG") |
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set(OPENCV_EXTRA_C_FLAGS_DEBUG "${OPENCV_EXTRA_C_FLAGS_DEBUG} -O0 -DDEBUG -D_DEBUG") |
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if(BUILD_WITH_DEBUG_INFO) |
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set(OPENCV_EXTRA_C_FLAGS_DEBUG "${OPENCV_EXTRA_C_FLAGS_DEBUG} -ggdb3") |
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endif() |
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endif() |
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if(MSVC) |
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# 64-bit MSVC compiler uses SSE/SSE2 by default |
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if(NOT MSVC64) |
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if(ENABLE_SSE) |
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set(OPENCV_EXTRA_C_FLAGS_RELEASE "${OPENCV_EXTRA_C_FLAGS_RELEASE} /arch:SSE") |
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endif() |
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if(ENABLE_SSE2) |
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set(OPENCV_EXTRA_C_FLAGS_RELEASE "${OPENCV_EXTRA_C_FLAGS_RELEASE} /arch:SSE2") |
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endif() |
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endif() |
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if(ENABLE_SSE3) |
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set(OPENCV_EXTRA_C_FLAGS_RELEASE "${OPENCV_EXTRA_C_FLAGS_RELEASE} /arch:SSE3") |
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endif() |
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if(ENABLE_SSE4_1) |
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set(OPENCV_EXTRA_C_FLAGS_RELEASE "${OPENCV_EXTRA_C_FLAGS_RELEASE} /arch:SSE4.1") |
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endif() |
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if(ENABLE_SSE OR ENABLE_SSE2 OR ENABLE_SSE3 OR ENABLE_SSE4_1) |
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set(OPENCV_EXTRA_C_FLAGS_RELEASE "${OPENCV_EXTRA_C_FLAGS_RELEASE} /Oi") |
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endif() |
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endif() |
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# Extra link libs if the user selects building static libs: |
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if(NOT BUILD_SHARED_LIBS AND CMAKE_COMPILER_IS_GNUCXX AND NOT ANDROID) |
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# Android does not need these settings because they are already set by toolchain file |
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set(OPENCV_LINKER_LIBS ${OPENCV_LINKER_LIBS} stdc++) |
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set(OPENCV_EXTRA_C_FLAGS "-fPIC ${OPENCV_EXTRA_C_FLAGS}") |
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endif() |
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# Add user supplied extra options (optimization, etc...) |
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# ========================================================== |
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set(OPENCV_EXTRA_C_FLAGS "${OPENCV_EXTRA_C_FLAGS}" CACHE INTERNAL "Extra compiler options") |
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set(OPENCV_EXTRA_C_FLAGS_RELEASE "${OPENCV_EXTRA_C_FLAGS_RELEASE}" CACHE INTERNAL "Extra compiler options for Release build") |
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set(OPENCV_EXTRA_C_FLAGS_DEBUG "${OPENCV_EXTRA_C_FLAGS_DEBUG}" CACHE INTERNAL "Extra compiler options for Debug build") |
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set(OPENCV_EXTRA_EXE_LINKER_FLAGS "${OPENCV_EXTRA_EXE_LINKER_FLAGS}" CACHE INTERNAL "Extra linker flags") |
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set(OPENCV_EXTRA_EXE_LINKER_FLAGS_RELEASE "${OPENCV_EXTRA_EXE_LINKER_FLAGS_RELEASE}" CACHE INTERNAL "Extra linker flags for Release build") |
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set(OPENCV_EXTRA_EXE_LINKER_FLAGS_DEBUG "${OPENCV_EXTRA_EXE_LINKER_FLAGS_DEBUG}" CACHE INTERNAL "Extra linker flags for Debug build") |
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#combine all "extra" options |
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set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${OPENCV_EXTRA_C_FLAGS}") |
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set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${OPENCV_EXTRA_C_FLAGS}") |
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set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} ${OPENCV_EXTRA_C_FLAGS_RELEASE}") |
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set(CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE} ${OPENCV_EXTRA_C_FLAGS_RELEASE}") |
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set(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} ${OPENCV_EXTRA_C_FLAGS_DEBUG}") |
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set(CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} ${OPENCV_EXTRA_C_FLAGS_DEBUG}") |
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set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} ${OPENCV_EXTRA_EXE_LINKER_FLAGS}") |
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set(CMAKE_EXE_LINKER_FLAGS_RELEASE "${CMAKE_EXE_LINKER_FLAGS_RELEASE} ${OPENCV_EXTRA_EXE_LINKER_FLAGS_RELEASE}") |
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set(CMAKE_EXE_LINKER_FLAGS_DEBUG "${CMAKE_EXE_LINKER_FLAGS_DEBUG} ${OPENCV_EXTRA_EXE_LINKER_FLAGS_DEBUG}") |
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if(MSVC) |
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# avoid warnings from MSVC about overriding the /W* option |
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# we replace /W3 with /W4 only for C++ files, |
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# since all the 3rd-party libraries OpenCV uses are in C, |
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# and we do not care about their warnings. |
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string(REPLACE "/W3" "/W4" CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}") |
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string(REPLACE "/W3" "/W4" CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE}") |
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string(REPLACE "/W3" "/W4" CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG}") |
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# allow extern "C" functions throw exceptions |
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foreach(flags CMAKE_C_FLAGS CMAKE_C_FLAGS_RELEASE CMAKE_C_FLAGS_RELEASE CMAKE_CXX_FLAGS CMAKE_CXX_FLAGS_RELEASE CMAKE_CXX_FLAGS_DEBUG) |
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string(REPLACE "/EHsc-" "/EHs" ${flags} "${${flags}}") |
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string(REPLACE "/EHsc" "/EHs" ${flags} "${${flags}}") |
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string(REPLACE "/Zm1000" "" ${flags} "${${flags}}") |
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endforeach() |
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if(NOT ENABLE_NOISY_WARNINGS) |
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set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /wd4251") #class 'std::XXX' needs to have dll-interface to be used by clients of YYY |
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endif() |
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endif()
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