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Open Source Computer Vision Library
https://opencv.org/
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359 lines
15 KiB
359 lines
15 KiB
if("${CMAKE_CXX_COMPILER};${CMAKE_C_COMPILER};${CMAKE_CXX_COMPILER_LAUNCHER}" MATCHES "ccache") |
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set(CMAKE_COMPILER_IS_CCACHE 1) # TODO: FIXIT Avoid setting of CMAKE_ variables |
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set(OPENCV_COMPILER_IS_CCACHE 1) |
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endif() |
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function(access_CMAKE_COMPILER_IS_CCACHE) |
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if(NOT OPENCV_SUPPRESS_DEPRECATIONS) |
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message(WARNING "DEPRECATED: CMAKE_COMPILER_IS_CCACHE is replaced to OPENCV_COMPILER_IS_CCACHE.") |
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endif() |
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endfunction() |
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variable_watch(CMAKE_COMPILER_IS_CCACHE access_CMAKE_COMPILER_IS_CCACHE) |
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if(ENABLE_CCACHE AND NOT OPENCV_COMPILER_IS_CCACHE AND NOT CMAKE_GENERATOR MATCHES "Xcode") |
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# This works fine with Unix Makefiles and Ninja generators |
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find_host_program(CCACHE_PROGRAM ccache) |
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if(CCACHE_PROGRAM) |
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message(STATUS "Looking for ccache - found (${CCACHE_PROGRAM})") |
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get_property(__OLD_RULE_LAUNCH_COMPILE GLOBAL PROPERTY RULE_LAUNCH_COMPILE) |
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if(__OLD_RULE_LAUNCH_COMPILE) |
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message(STATUS "Can't replace CMake compiler launcher") |
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else() |
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set_property(GLOBAL PROPERTY RULE_LAUNCH_COMPILE "${CCACHE_PROGRAM}") |
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# NOTE: Actually this check doesn't work as expected. |
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# "RULE_LAUNCH_COMPILE" is ignored by CMake during try_compile() step. |
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# ocv_check_compiler_flag(CXX "" IS_CCACHE_WORKS) |
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set(IS_CCACHE_WORKS 1) |
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if(IS_CCACHE_WORKS) |
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set(OPENCV_COMPILER_IS_CCACHE 1) |
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else() |
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message(STATUS "Unable to compile program with enabled ccache, reverting...") |
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set_property(GLOBAL PROPERTY RULE_LAUNCH_COMPILE "${__OLD_RULE_LAUNCH_COMPILE}") |
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endif() |
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endif() |
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else() |
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message(STATUS "Looking for ccache - not found") |
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endif() |
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endif() |
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if((CV_CLANG AND NOT CMAKE_GENERATOR MATCHES "Xcode") # PCH has no support for Clang |
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OR OPENCV_COMPILER_IS_CCACHE |
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) |
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set(ENABLE_PRECOMPILED_HEADERS OFF CACHE BOOL "" FORCE) |
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endif() |
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macro(add_extra_compiler_option option) |
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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} ${option}") |
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endif() |
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endmacro() |
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macro(add_extra_compiler_option_force option) |
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set(OPENCV_EXTRA_CXX_FLAGS "${OPENCV_EXTRA_CXX_FLAGS} ${option}") |
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set(OPENCV_EXTRA_C_FLAGS "${OPENCV_EXTRA_C_FLAGS} ${option}") |
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endmacro() |
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# Gets environment variable and puts its value to the corresponding preprocessor definition |
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# Useful for WINRT that has no access to environment variables |
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macro(add_env_definitions option) |
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set(value $ENV{${option}}) |
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if("${value}" STREQUAL "") |
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message(WARNING "${option} environment variable is empty. Please set it to appropriate location to get correct results") |
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else() |
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string(REPLACE "\\" "\\\\" value ${value}) |
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endif() |
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add_definitions("-D${option}=\"${value}\"") |
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endmacro() |
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if(NOT MSVC) |
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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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endif() |
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if(CV_ICC AND NOT ENABLE_FAST_MATH) |
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if(MSVC) |
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add_extra_compiler_option("/fp:precise") |
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else() |
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add_extra_compiler_option("-fp-model precise") |
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endif() |
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endif() |
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if(CV_GCC OR CV_CLANG) |
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# High level of warnings. |
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add_extra_compiler_option(-W) |
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if (NOT MSVC) |
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# clang-cl interprets -Wall as MSVC would: -Weverything, which is more than |
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# we want. |
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add_extra_compiler_option(-Wall) |
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endif() |
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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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if(NOT (CV_GCC AND CMAKE_CXX_COMPILER_VERSION VERSION_LESS "5.0")) |
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add_extra_compiler_option(-Wshadow) # old GCC emits warnings for variables + methods combination |
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endif() |
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add_extra_compiler_option(-Wsign-promo) |
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add_extra_compiler_option(-Wuninitialized) |
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add_extra_compiler_option(-Winit-self) |
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if(HAVE_CXX11) |
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if(CMAKE_CXX_COMPILER_ID STREQUAL "GNU" AND NOT ENABLE_PRECOMPILED_HEADERS) |
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add_extra_compiler_option(-Wsuggest-override) |
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elseif(CMAKE_CXX_COMPILER_ID STREQUAL "Clang") |
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add_extra_compiler_option(-Winconsistent-missing-override) |
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endif() |
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endif() |
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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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add_extra_compiler_option(-Wno-comment) |
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if(NOT OPENCV_SKIP_IMPLICIT_FALLTHROUGH |
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AND NOT " ${CMAKE_CXX_FLAGS} ${OPENCV_EXTRA_FLAGS} ${OPENCV_EXTRA_CXX_FLAGS}" MATCHES "implicit-fallthrough" |
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AND (CV_GCC AND NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS 7.0.0) |
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) |
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add_extra_compiler_option(-Wimplicit-fallthrough=3) |
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endif() |
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if(CV_GCC AND CMAKE_CXX_COMPILER_VERSION VERSION_GREATER 7.0) |
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add_extra_compiler_option(-Wno-strict-overflow) # Issue appears when compiling surf.cpp from opencv_contrib/modules/xfeatures2d |
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endif() |
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if(CV_GCC AND CMAKE_CXX_COMPILER_VERSION VERSION_LESS 5.0) |
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add_extra_compiler_option(-Wno-missing-field-initializers) # GCC 4.x emits warnings about {}, fixed in GCC 5+ |
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endif() |
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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 system 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 CV_CLANG)) # TODO |
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add_extra_compiler_option(-pthread) |
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endif() |
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if(CV_CLANG) |
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add_extra_compiler_option(-Qunused-arguments) |
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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(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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elseif(DEFINED ENABLE_OMIT_FRAME_POINTER) |
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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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# 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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string(REPLACE "-fdata-sections" "" ${flags} "${${flags}}") |
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endforeach() |
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elseif(NOT ((IOS OR ANDROID) AND NOT BUILD_SHARED_LIBS) AND NOT MSVC) |
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# Remove unreferenced functions: function level linking |
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add_extra_compiler_option(-ffunction-sections) |
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add_extra_compiler_option(-fdata-sections) |
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if(NOT APPLE AND NOT OPENCV_SKIP_GC_SECTIONS) |
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set(OPENCV_EXTRA_EXE_LINKER_FLAGS "${OPENCV_EXTRA_EXE_LINKER_FLAGS} -Wl,--gc-sections") |
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endif() |
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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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set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} --coverage") |
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endif() |
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if(ENABLE_INSTRUMENTATION) |
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if(NOT HAVE_CXX11) |
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message(WARNING "ENABLE_INSTRUMENTATION requires C++11 support") |
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endif() |
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set(WITH_VTK OFF) # There are issues with VTK 6.0 |
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endif() |
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if(ENABLE_LTO) |
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add_extra_compiler_option(-flto) |
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endif() |
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if(ENABLE_THIN_LTO) |
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add_extra_compiler_option(-flto=thin) |
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endif() |
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set(OPENCV_EXTRA_FLAGS_RELEASE "${OPENCV_EXTRA_FLAGS_RELEASE} -DNDEBUG") |
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if(NOT " ${CMAKE_CXX_FLAGS} ${CMAKE_CXX_FLAGS_DEBUG} ${OPENCV_EXTRA_FLAGS_DEBUG} " MATCHES "-O") |
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set(OPENCV_EXTRA_FLAGS_DEBUG "${OPENCV_EXTRA_FLAGS_DEBUG} -O0") |
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endif() |
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set(OPENCV_EXTRA_FLAGS_DEBUG "${OPENCV_EXTRA_FLAGS_DEBUG} -DDEBUG -D_DEBUG") |
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if(BUILD_WITH_DEBUG_INFO) |
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# https://gcc.gnu.org/onlinedocs/gcc/Debugging-Options.html |
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# '-g' is equal to '-g2', '-g1' produces minimal information, enough for making backtraces |
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ocv_update(OPENCV_DEBUG_OPTION "-g1") |
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if(NOT " ${CMAKE_CXX_FLAGS} ${CMAKE_CXX_FLAGS_RELEASE} ${OPENCV_EXTRA_CXX_FLAGS} ${OPENCV_EXTRA_FLAGS_RELEASE}" MATCHES " -g") |
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set(OPENCV_EXTRA_FLAGS_RELEASE "${OPENCV_EXTRA_FLAGS_RELEASE} ${OPENCV_DEBUG_OPTION}") |
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endif() |
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endif() |
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endif() |
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if(MSVC) |
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#TODO Code refactoring is required to resolve security warnings |
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#if(NOT ENABLE_BUILD_HARDENING) |
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set(OPENCV_EXTRA_FLAGS "${OPENCV_EXTRA_FLAGS} /D _CRT_SECURE_NO_DEPRECATE /D _CRT_NONSTDC_NO_DEPRECATE /D _SCL_SECURE_NO_WARNINGS") |
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#endif() |
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if(BUILD_WITH_DEBUG_INFO) |
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set(OPENCV_EXTRA_FLAGS_RELEASE "${OPENCV_EXTRA_FLAGS_RELEASE} /Zi") |
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set(OPENCV_EXTRA_EXE_LINKER_FLAGS_RELEASE "${OPENCV_EXTRA_EXE_LINKER_FLAGS_RELEASE} /debug") |
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set(OPENCV_EXTRA_SHARED_LINKER_FLAGS_RELEASE "${OPENCV_EXTRA_SHARED_LINKER_FLAGS_RELEASE} /debug") |
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endif() |
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# Remove unreferenced functions: function level linking |
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set(OPENCV_EXTRA_FLAGS "${OPENCV_EXTRA_FLAGS} /Gy") |
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if(NOT MSVC_VERSION LESS 1400) |
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set(OPENCV_EXTRA_FLAGS "${OPENCV_EXTRA_FLAGS} /bigobj") |
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endif() |
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if(OPENCV_WARNINGS_ARE_ERRORS) |
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set(OPENCV_EXTRA_FLAGS "${OPENCV_EXTRA_FLAGS} /WX") |
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endif() |
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if(ENABLE_LTO) |
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set(OPENCV_EXTRA_FLAGS_RELEASE "${OPENCV_EXTRA_FLAGS_RELEASE} /GL") |
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set(OPENCV_EXTRA_EXE_LINKER_FLAGS_RELEASE "${OPENCV_EXTRA_EXE_LINKER_FLAGS_RELEASE} /LTCG") |
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endif() |
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if(NOT MSVC_VERSION LESS 1800 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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endif() |
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# Adding additional using directory for WindowsPhone 8.0 to get Windows.winmd properly |
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if(WINRT_PHONE AND WINRT_8_0) |
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set(OPENCV_EXTRA_CXX_FLAGS "${OPENCV_EXTRA_CXX_FLAGS} /AI\$(WindowsSDK_MetadataPath)") |
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endif() |
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include(cmake/OpenCVCompilerOptimizations.cmake) |
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if(COMMAND ocv_compiler_optimization_options) |
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ocv_compiler_optimization_options() |
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endif() |
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if(COMMAND ocv_compiler_optimization_options_finalize) |
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ocv_compiler_optimization_options_finalize() |
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endif() |
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# set default visibility to hidden |
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if((CV_GCC OR CV_CLANG) |
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AND NOT MSVC |
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AND NOT OPENCV_SKIP_VISIBILITY_HIDDEN |
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AND NOT " ${CMAKE_CXX_FLAGS} ${OPENCV_EXTRA_FLAGS} ${OPENCV_EXTRA_CXX_FLAGS}" MATCHES " -fvisibility") |
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add_extra_compiler_option(-fvisibility=hidden) |
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add_extra_compiler_option(-fvisibility-inlines-hidden) |
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endif() |
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# combine all "extra" options |
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if(NOT OPENCV_SKIP_EXTRA_COMPILER_FLAGS) |
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set(CMAKE_C_FLAGS "${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} ${OPENCV_EXTRA_EXE_LINKER_FLAGS_DEBUG}") |
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set(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} ${OPENCV_EXTRA_SHARED_LINKER_FLAGS}") |
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set(CMAKE_SHARED_LINKER_FLAGS_RELEASE "${CMAKE_SHARED_LINKER_FLAGS_RELEASE} ${OPENCV_EXTRA_SHARED_LINKER_FLAGS_RELEASE}") |
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set(CMAKE_SHARED_LINKER_FLAGS_DEBUG "${CMAKE_SHARED_LINKER_FLAGS_DEBUG} ${OPENCV_EXTRA_SHARED_LINKER_FLAGS_DEBUG}") |
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endif() |
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if(MSVC) |
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if(NOT ENABLE_NOISY_WARNINGS) |
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if(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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endif() |
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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 "/Zm1000" "" ${flags} "${${flags}}") |
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endforeach() |
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# Enable 'extern "C"' and asynchronous (division by zero, access violation) exceptions |
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if(NOT OPENCV_SKIP_MSVC_EXCEPTIONS_FLAG) |
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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(REGEX REPLACE " /EH[^ ]* " " " ${flags} " ${${flags}}") |
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endforeach() |
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if(NOT " ${CMAKE_CXX_FLAGS} ${CMAKE_CXX_FLAGS_RELEASE} ${CMAKE_CXX_FLAGS_DEBUG}" MATCHES " /EH") |
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set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /EHa") |
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endif() |
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endif() |
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if(NOT ENABLE_NOISY_WARNINGS) |
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ocv_warnings_disable(CMAKE_CXX_FLAGS /wd4127) # conditional expression is constant |
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ocv_warnings_disable(CMAKE_CXX_FLAGS /wd4251) # class 'std::XXX' needs to have dll-interface to be used by clients of YYY |
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ocv_warnings_disable(CMAKE_CXX_FLAGS /wd4324) # 'struct_name' : structure was padded due to __declspec(align()) |
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ocv_warnings_disable(CMAKE_CXX_FLAGS /wd4275) # non dll-interface class 'std::exception' used as base for dll-interface class 'cv::Exception' |
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ocv_warnings_disable(CMAKE_CXX_FLAGS /wd4512) # Assignment operator could not be generated |
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ocv_warnings_disable(CMAKE_CXX_FLAGS /wd4589) # Constructor of abstract class 'cv::ORB' ignores initializer for virtual base class 'cv::Algorithm' |
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endif() |
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if(CV_ICC AND NOT ENABLE_NOISY_WARNINGS) |
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foreach(flags CMAKE_CXX_FLAGS CMAKE_CXX_FLAGS_RELEASE CMAKE_CXX_FLAGS_DEBUG CMAKE_C_FLAGS CMAKE_C_FLAGS_RELEASE CMAKE_C_FLAGS_DEBUG) |
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string(REGEX REPLACE "( |^)/W[0-9]+( |$)" "\\1\\2" ${flags} "${${flags}}") |
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endforeach() |
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set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /Qwd673") # PCH warning |
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endif() |
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endif() |
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if(APPLE AND NOT CMAKE_CROSSCOMPILING AND NOT DEFINED ENV{LDFLAGS} AND EXISTS "/usr/local/lib") |
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link_directories("/usr/local/lib") |
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endif() |
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if(ENABLE_BUILD_HARDENING) |
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include(${CMAKE_CURRENT_LIST_DIR}/OpenCVCompilerDefenses.cmake) |
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endif() |
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if(MSVC) |
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include(cmake/OpenCVCRTLinkage.cmake) |
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add_definitions(-D_VARIADIC_MAX=10) |
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endif() |
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# Enable compiler options for OpenCV modules/apps/samples only (ignore 3rdparty) |
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macro(ocv_add_modules_compiler_options) |
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if(MSVC AND NOT OPENCV_SKIP_MSVC_W4_OPTION) |
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foreach(flags CMAKE_CXX_FLAGS CMAKE_CXX_FLAGS_RELEASE CMAKE_CXX_FLAGS_DEBUG) |
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string(REPLACE "/W3" "/W4" ${flags} "${${flags}}") |
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endforeach() |
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endif() |
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endmacro()
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