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Open Source Computer Vision Library
https://opencv.org/
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285 lines
11 KiB
285 lines
11 KiB
if(MINGW) |
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# mingw compiler is known to produce unstable SSE code with -O3 hence we are trying to use -O2 instead |
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if(CMAKE_COMPILER_IS_GNUCXX) |
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foreach(flags CMAKE_CXX_FLAGS CMAKE_CXX_FLAGS_RELEASE CMAKE_CXX_FLAGS_DEBUG) |
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string(REPLACE "-O3" "-O2" ${flags} "${${flags}}") |
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endforeach() |
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endif() |
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if(CMAKE_COMPILER_IS_GNUCC) |
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foreach(flags CMAKE_C_FLAGS CMAKE_C_FLAGS_RELEASE CMAKE_C_FLAGS_DEBUG) |
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string(REPLACE "-O3" "-O2" ${flags} "${${flags}}") |
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endforeach() |
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endif() |
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endif() |
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if(MSVC) |
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string(REGEX REPLACE "^ *| * $" "" CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}") |
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string(REGEX REPLACE "^ *| * $" "" CMAKE_CXX_FLAGS_INIT "${CMAKE_CXX_FLAGS_INIT}") |
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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_FLAGS "") |
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set(OPENCV_EXTRA_C_FLAGS "") |
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set(OPENCV_EXTRA_CXX_FLAGS "") |
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set(OPENCV_EXTRA_FLAGS_RELEASE "") |
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set(OPENCV_EXTRA_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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macro(add_extra_compiler_option option) |
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if(CMAKE_BUILD_TYPE) |
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set(CMAKE_TRY_COMPILE_CONFIGURATION ${CMAKE_BUILD_TYPE}) |
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endif() |
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ocv_check_flag_support(CXX "${option}" _varname "${OPENCV_EXTRA_CXX_FLAGS} ${ARGN}") |
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if(${_varname}) |
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set(OPENCV_EXTRA_CXX_FLAGS "${OPENCV_EXTRA_CXX_FLAGS} ${option}") |
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endif() |
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ocv_check_flag_support(C "${option}" _varname "${OPENCV_EXTRA_C_FLAGS} ${ARGN}") |
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if(${_varname}) |
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set(OPENCV_EXTRA_C_FLAGS "${OPENCV_EXTRA_C_FLAGS} ${option}") |
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endif() |
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endmacro() |
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if(MINGW) |
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# http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40838 |
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# here we are trying to workaround the problem |
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add_extra_compiler_option(-mstackrealign) |
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if(NOT HAVE_CXX_MSTACKREALIGN) |
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add_extra_compiler_option(-mpreferred-stack-boundary=2) |
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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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add_extra_compiler_option(-W) |
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add_extra_compiler_option(-Wall) |
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add_extra_compiler_option(-Werror=return-type) |
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add_extra_compiler_option(-Werror=non-virtual-dtor) |
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add_extra_compiler_option(-Werror=address) |
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add_extra_compiler_option(-Werror=sequence-point) |
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add_extra_compiler_option(-Wformat) |
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add_extra_compiler_option(-Werror=format-security -Wformat) |
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add_extra_compiler_option(-Wmissing-declarations) |
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add_extra_compiler_option(-Wmissing-prototypes) |
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add_extra_compiler_option(-Wstrict-prototypes) |
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add_extra_compiler_option(-Wundef) |
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add_extra_compiler_option(-Winit-self) |
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add_extra_compiler_option(-Wpointer-arith) |
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add_extra_compiler_option(-Wshadow) |
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add_extra_compiler_option(-Wsign-promo) |
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if(ENABLE_NOISY_WARNINGS) |
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add_extra_compiler_option(-Wcast-align) |
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add_extra_compiler_option(-Wstrict-aliasing=2) |
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else() |
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add_extra_compiler_option(-Wno-narrowing) |
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add_extra_compiler_option(-Wno-delete-non-virtual-dtor) |
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add_extra_compiler_option(-Wno-unnamed-type-template-args) |
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endif() |
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add_extra_compiler_option(-fdiagnostics-show-option) |
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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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add_extra_compiler_option(-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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add_extra_compiler_option(-pthread) |
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endif() |
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if(OPENCV_WARNINGS_ARE_ERRORS) |
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add_extra_compiler_option(-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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add_extra_compiler_option(-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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add_extra_compiler_option(-fomit-frame-pointer) |
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else() |
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add_extra_compiler_option(-fno-omit-frame-pointer) |
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endif() |
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if(ENABLE_FAST_MATH) |
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add_extra_compiler_option(-ffast-math) |
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endif() |
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if(ENABLE_POWERPC) |
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add_extra_compiler_option("-mcpu=G3 -mtune=G5") |
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endif() |
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if(ENABLE_SSE) |
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add_extra_compiler_option(-msse) |
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endif() |
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if(ENABLE_SSE2) |
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add_extra_compiler_option(-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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add_extra_compiler_option(-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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add_extra_compiler_option(-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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add_extra_compiler_option(-msse4.1) |
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endif() |
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if(ENABLE_SSE42) |
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add_extra_compiler_option(-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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if(ENABLE_SSE2) |
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add_extra_compiler_option(-mfpmath=sse)# !! important - be on the same wave with x64 compilers |
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else() |
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add_extra_compiler_option(-mfpmath=387) |
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endif() |
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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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add_extra_compiler_option("-pg -g") |
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# turn off incompatible options |
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foreach(flags CMAKE_CXX_FLAGS CMAKE_C_FLAGS CMAKE_CXX_FLAGS_RELEASE CMAKE_C_FLAGS_RELEASE CMAKE_CXX_FLAGS_DEBUG CMAKE_C_FLAGS_DEBUG |
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OPENCV_EXTRA_FLAGS_RELEASE OPENCV_EXTRA_FLAGS_DEBUG OPENCV_EXTRA_C_FLAGS OPENCV_EXTRA_CXX_FLAGS) |
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string(REPLACE "-fomit-frame-pointer" "" ${flags} "${${flags}}") |
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string(REPLACE "-ffunction-sections" "" ${flags} "${${flags}}") |
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endforeach() |
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elseif(NOT APPLE AND NOT ANDROID) |
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# Remove unreferenced functions: function level linking |
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add_extra_compiler_option(-ffunction-sections) |
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endif() |
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set(OPENCV_EXTRA_FLAGS_RELEASE "${OPENCV_EXTRA_FLAGS_RELEASE} -DNDEBUG") |
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set(OPENCV_EXTRA_FLAGS_DEBUG "${OPENCV_EXTRA_FLAGS_DEBUG} -O0 -DDEBUG -D_DEBUG") |
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if(BUILD_WITH_DEBUG_INFO) |
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set(OPENCV_EXTRA_FLAGS_DEBUG "${OPENCV_EXTRA_FLAGS_DEBUG} -ggdb3") |
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endif() |
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endif() |
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if(MSVC) |
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set(OPENCV_EXTRA_FLAGS "${OPENCV_EXTRA_FLAGS} /D _CRT_SECURE_NO_DEPRECATE /D _CRT_NONSTDC_NO_DEPRECATE /D _SCL_SECURE_NO_WARNINGS") |
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# 64-bit portability warnings, in MSVC80 |
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if(MSVC80) |
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set(OPENCV_EXTRA_FLAGS "${OPENCV_EXTRA_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 "${OPENCV_EXTRA_EXE_LINKER_FLAGS_RELEASE} /debug") |
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endif() |
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# Remove unreferenced functions: function level linking |
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set(OPENCV_EXTRA_FLAGS "${OPENCV_EXTRA_FLAGS} /Gy") |
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if(NOT MSVC_VERSION LESS 1400) |
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set(OPENCV_EXTRA_FLAGS "${OPENCV_EXTRA_FLAGS} /bigobj") |
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endif() |
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if(BUILD_WITH_DEBUG_INFO) |
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set(OPENCV_EXTRA_FLAGS_RELEASE "${OPENCV_EXTRA_FLAGS_RELEASE} /Zi") |
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endif() |
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if(NOT MSVC64) |
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# 64-bit MSVC compiler uses SSE/SSE2 by default |
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if(ENABLE_SSE) |
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set(OPENCV_EXTRA_FLAGS "${OPENCV_EXTRA_FLAGS} /arch:SSE") |
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endif() |
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if(ENABLE_SSE2) |
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set(OPENCV_EXTRA_FLAGS "${OPENCV_EXTRA_FLAGS} /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_FLAGS "${OPENCV_EXTRA_FLAGS} /arch:SSE3") |
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endif() |
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if(ENABLE_SSE4_1) |
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set(OPENCV_EXTRA_FLAGS "${OPENCV_EXTRA_FLAGS} /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_FLAGS "${OPENCV_EXTRA_FLAGS} /Oi") |
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endif() |
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if(X86 OR X86_64) |
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if(CMAKE_SIZEOF_VOID_P EQUAL 4 AND ENABLE_SSE2) |
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set(OPENCV_EXTRA_FLAGS "${OPENCV_EXTRA_FLAGS} /fp:fast")# !! important - be on the same wave with x64 compilers |
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endif() |
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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_FLAGS "-fPIC ${OPENCV_EXTRA_FLAGS}") |
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endif() |
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# Add user supplied extra options (optimization, etc...) |
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# ========================================================== |
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set(OPENCV_EXTRA_FLAGS "${OPENCV_EXTRA_FLAGS}" CACHE INTERNAL "Extra compiler options") |
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set(OPENCV_EXTRA_C_FLAGS "${OPENCV_EXTRA_C_FLAGS}" CACHE INTERNAL "Extra compiler options for C sources") |
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set(OPENCV_EXTRA_CXX_FLAGS "${OPENCV_EXTRA_CXX_FLAGS}" CACHE INTERNAL "Extra compiler options for C++ sources") |
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set(OPENCV_EXTRA_FLAGS_RELEASE "${OPENCV_EXTRA_FLAGS_RELEASE}" CACHE INTERNAL "Extra compiler options for Release build") |
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set(OPENCV_EXTRA_FLAGS_DEBUG "${OPENCV_EXTRA_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_FLAGS} ${OPENCV_EXTRA_C_FLAGS}") |
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set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${OPENCV_EXTRA_FLAGS} ${OPENCV_EXTRA_CXX_FLAGS}") |
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set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} ${OPENCV_EXTRA_FLAGS_RELEASE}") |
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set(CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE} ${OPENCV_EXTRA_FLAGS_RELEASE}") |
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set(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} ${OPENCV_EXTRA_FLAGS_DEBUG}") |
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set(CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} ${OPENCV_EXTRA_FLAGS_DEBUG}") |
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set(CMAKE_EXE_LINKER_FLAGS "${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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if(NOT ENABLE_NOISY_WARNINGS AND MSVC_VERSION EQUAL 1400) |
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ocv_warnings_disable(CMAKE_CXX_FLAGS /wd4510 /wd4610 /wd4312 /wd4201 /wd4244 /wd4328 /wd4267) |
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endif() |
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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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