mirror of
https://github.com/opencv/opencv.git
synced 2024-11-27 12:40:05 +08:00
200 lines
8.0 KiB
CMake
200 lines
8.0 KiB
CMake
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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