cde697dd14
it adds OPENCV_TINY_GPU_MODULE definition, that will allow to build tiny version of gpu module (with limited image format support)
323 lines
12 KiB
CMake
323 lines
12 KiB
CMake
if(MINGW OR (X86 AND UNIX AND NOT APPLE))
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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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# OpenCV fails some tests when 'char' is 'unsigned' by default
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add_extra_compiler_option(-fsigned-char)
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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(OPENCV_CAN_BREAK_BINARY_COMPATIBILITY)
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add_definitions(-DOPENCV_CAN_BREAK_BINARY_COMPATIBILITY)
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endif()
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if(BUILD_TINY_GPU_MODULE)
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add_definitions(-DOPENCV_TINY_GPU_MODULE)
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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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if(OPENCV_CAN_BREAK_BINARY_COMPATIBILITY)
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add_extra_compiler_option(-Werror=non-virtual-dtor)
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endif()
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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 AND NOT (APPLE AND CMAKE_COMPILER_IS_CLANGCXX))
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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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if(APPLE)
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add_extra_compiler_option(-Wno-semicolon-before-method-body)
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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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if (ENABLE_NEON)
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add_extra_compiler_option("-mfpu=neon")
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endif()
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if (ENABLE_VFPV3 AND NOT ENABLE_NEON)
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add_extra_compiler_option("-mfpu=vfpv3")
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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_AVX)
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add_extra_compiler_option("-mavx")
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endif()
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if(ENABLE_AVX2)
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add_extra_compiler_option("-mavx2")
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endif()
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# GCC depresses SSEx instructions when -mavx is used. Instead, it generates new AVX instructions or AVX equivalence for all SSEx instructions when needed.
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if(NOT OPENCV_EXTRA_CXX_FLAGS MATCHES "-mavx")
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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(ENABLE_SSSE3)
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add_extra_compiler_option(-mssse3)
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endif()
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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(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(OPENCV_EXTRA_CXX_FLAGS MATCHES "-m(sse2|avx)")
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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" "" ${flags} "${${flags}}")
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endforeach()
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elseif(NOT APPLE AND NOT ANDROID)
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# Remove unreferenced functions: function level linking
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add_extra_compiler_option(-ffunction-sections)
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endif()
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if(ENABLE_COVERAGE)
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set(OPENCV_EXTRA_C_FLAGS "${OPENCV_EXTRA_C_FLAGS} --coverage")
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set(OPENCV_EXTRA_CXX_FLAGS "${OPENCV_EXTRA_CXX_FLAGS} --coverage")
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endif()
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set(OPENCV_EXTRA_FLAGS_RELEASE "${OPENCV_EXTRA_FLAGS_RELEASE} -DNDEBUG")
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set(OPENCV_EXTRA_FLAGS_DEBUG "${OPENCV_EXTRA_FLAGS_DEBUG} -O0 -DDEBUG -D_DEBUG")
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endif()
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if(MSVC)
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set(OPENCV_EXTRA_FLAGS "${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 "${OPENCV_EXTRA_FLAGS_RELEASE} /Zi")
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endif()
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if(ENABLE_SSE4_1 AND CV_ICC AND NOT OPENCV_EXTRA_FLAGS MATCHES "/arch:")
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set(OPENCV_EXTRA_FLAGS "${OPENCV_EXTRA_FLAGS} /arch:SSE4.1")
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endif()
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if(ENABLE_SSE3 AND CV_ICC AND NOT OPENCV_EXTRA_FLAGS MATCHES "/arch:")
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set(OPENCV_EXTRA_FLAGS "${OPENCV_EXTRA_FLAGS} /arch:SSE3")
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endif()
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if(NOT MSVC64)
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# 64-bit MSVC compiler uses SSE/SSE2 by default
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if(ENABLE_SSE2 AND NOT OPENCV_EXTRA_FLAGS MATCHES "/arch:")
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set(OPENCV_EXTRA_FLAGS "${OPENCV_EXTRA_FLAGS} /arch:SSE2")
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endif()
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if(ENABLE_SSE AND NOT OPENCV_EXTRA_FLAGS MATCHES "/arch:")
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set(OPENCV_EXTRA_FLAGS "${OPENCV_EXTRA_FLAGS} /arch:SSE")
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endif()
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endif()
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if(ENABLE_SSE OR ENABLE_SSE2 OR ENABLE_SSE3 OR ENABLE_SSE4_1 OR ENABLE_AVX OR ENABLE_AVX2)
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set(OPENCV_EXTRA_FLAGS "${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 "${OPENCV_EXTRA_FLAGS} /fp:fast") # !! important - be on the same wave with x64 compilers
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endif()
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endif()
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if(OPENCV_WARNINGS_ARE_ERRORS)
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set(OPENCV_EXTRA_FLAGS "${OPENCV_EXTRA_FLAGS} /WX")
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endif()
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endif()
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if(MSVC12 AND NOT CMAKE_GENERATOR MATCHES "Visual Studio")
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set(OPENCV_EXTRA_C_FLAGS "${OPENCV_EXTRA_C_FLAGS} /FS")
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set(OPENCV_EXTRA_CXX_FLAGS "${OPENCV_EXTRA_CXX_FLAGS} /FS")
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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) OR QNX))
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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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