mirror of https://github.com/opencv/opencv.git
Open Source Computer Vision Library
https://opencv.org/
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542 lines
24 KiB
542 lines
24 KiB
if("${CMAKE_CXX_COMPILER};${CMAKE_C_COMPILER};${CMAKE_CXX_COMPILER_LAUNCHER}" MATCHES "ccache") |
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set(CMAKE_COMPILER_IS_CCACHE 1) # TODO: FIXIT Avoid setting of CMAKE_ variables |
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set(OPENCV_COMPILER_IS_CCACHE 1) |
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endif() |
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function(access_CMAKE_COMPILER_IS_CCACHE) |
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if(NOT OPENCV_SUPPRESS_DEPRECATIONS) |
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message(WARNING "DEPRECATED: CMAKE_COMPILER_IS_CCACHE is replaced to OPENCV_COMPILER_IS_CCACHE.") |
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endif() |
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endfunction() |
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variable_watch(CMAKE_COMPILER_IS_CCACHE access_CMAKE_COMPILER_IS_CCACHE) |
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if(ENABLE_CCACHE AND NOT OPENCV_COMPILER_IS_CCACHE) |
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# This works fine with Unix Makefiles and Ninja generators |
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find_host_program(CCACHE_PROGRAM ccache) |
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if(CCACHE_PROGRAM) |
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message(STATUS "Looking for ccache - found (${CCACHE_PROGRAM})") |
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get_property(__OLD_RULE_LAUNCH_COMPILE GLOBAL PROPERTY RULE_LAUNCH_COMPILE) |
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if(CMAKE_GENERATOR MATCHES "Xcode") |
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configure_file("${CMAKE_CURRENT_LIST_DIR}/templates/xcode-launch-c.in" "${CMAKE_BINARY_DIR}/xcode-launch-c") |
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configure_file("${CMAKE_CURRENT_LIST_DIR}/templates/xcode-launch-cxx.in" "${CMAKE_BINARY_DIR}/xcode-launch-cxx") |
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execute_process(COMMAND chmod a+rx |
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"${CMAKE_BINARY_DIR}/xcode-launch-c" |
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"${CMAKE_BINARY_DIR}/xcode-launch-cxx" |
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) |
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# Xcode project attributes |
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set(CMAKE_XCODE_ATTRIBUTE_CC "${CMAKE_BINARY_DIR}/xcode-launch-c") |
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set(CMAKE_XCODE_ATTRIBUTE_CXX "${CMAKE_BINARY_DIR}/xcode-launch-cxx") |
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set(CMAKE_XCODE_ATTRIBUTE_LD "${CMAKE_BINARY_DIR}/xcode-launch-c") |
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set(CMAKE_XCODE_ATTRIBUTE_LDPLUSPLUS "${CMAKE_BINARY_DIR}/xcode-launch-cxx") |
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set(OPENCV_COMPILER_IS_CCACHE 1) |
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message(STATUS "ccache: enable support through Xcode project properties") |
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elseif(__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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|
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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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|
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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} ${option}") |
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endif() |
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endmacro() |
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|
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macro(add_extra_compiler_option_force option) |
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set(OPENCV_EXTRA_CXX_FLAGS "${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(MSVC) |
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if(NOT " ${CMAKE_CXX_FLAGS} ${OPENCV_EXTRA_FLAGS} ${OPENCV_EXTRA_CXX_FLAGS}" MATCHES " /fp:") |
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if(ENABLE_FAST_MATH) |
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add_extra_compiler_option("/fp:fast") |
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else() |
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add_extra_compiler_option("/fp:precise") |
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endif() |
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endif() |
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elseif(CV_ICC) |
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if(NOT " ${CMAKE_CXX_FLAGS} ${OPENCV_EXTRA_FLAGS} ${OPENCV_EXTRA_CXX_FLAGS}" MATCHES " /fp:" |
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AND NOT " ${CMAKE_CXX_FLAGS} ${OPENCV_EXTRA_FLAGS} ${OPENCV_EXTRA_CXX_FLAGS}" MATCHES " -fp-model" |
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) |
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if(NOT ENABLE_FAST_MATH) |
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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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elseif(CV_GCC OR CV_CLANG) |
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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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endif() |
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|
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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(-Wreturn-type) |
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add_extra_compiler_option(-Wnon-virtual-dtor) |
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add_extra_compiler_option(-Waddress) |
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add_extra_compiler_option(-Wsequence-point) |
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add_extra_compiler_option(-Wformat) |
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add_extra_compiler_option(-Wformat-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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if(CV_GCC AND (CMAKE_CXX_COMPILER_VERSION VERSION_GREATER 6.0) AND (CMAKE_CXX_COMPILER_VERSION VERSION_LESS 7.0 OR ARM)) |
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add_extra_compiler_option(-Wno-psabi) |
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endif() |
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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-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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if(CV_CLANG AND NOT CMAKE_CXX_COMPILER_ID STREQUAL "AppleClang" AND NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS 10.0) |
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add_extra_compiler_option(-Wno-deprecated-enum-enum-conversion) |
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add_extra_compiler_option(-Wno-deprecated-anon-enum-enum-conversion) |
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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, unless we have explicitly disabled multi-thread execution. |
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if(NOT OPENCV_DISABLE_THREAD_SUPPORT |
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AND ( |
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(UNIX |
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AND NOT ANDROID |
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AND NOT (APPLE AND CV_CLANG) |
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AND NOT EMSCRIPTEN |
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) |
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OR (EMSCRIPTEN AND WITH_PTHREADS_PF) # https://github.com/opencv/opencv/issues/20285 |
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) |
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) # TODO |
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add_extra_compiler_option(-pthread) |
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endif() |
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|
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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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|
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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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|
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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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|
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# Profiling? |
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if(ENABLE_PROFILING) |
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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" "" ${flags} "${${flags}}") |
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endforeach() |
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# -pg should be placed both in the linker and in the compiler settings |
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set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -pg") |
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add_extra_compiler_option("-pg -g") |
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else() |
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if(MSVC) |
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# TODO: Clang/C2 is not supported |
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elseif(((IOS OR ANDROID) AND NOT BUILD_SHARED_LIBS) AND NOT OPENCV_FORCE_FUNCTIONS_SECTIONS) |
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# don't create separate sections for functions/data, reduce package size |
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else() |
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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 OPENCV_SKIP_GC_SECTIONS) |
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if(APPLE) |
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set(OPENCV_EXTRA_EXE_LINKER_FLAGS "${OPENCV_EXTRA_EXE_LINKER_FLAGS} -Wl,-dead_strip") |
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set(OPENCV_EXTRA_SHARED_LINKER_FLAGS "${OPENCV_EXTRA_SHARED_LINKER_FLAGS} -Wl,-dead_strip") |
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set(OPENCV_EXTRA_MODULE_LINKER_FLAGS "${OPENCV_EXTRA_MODULE_LINKER_FLAGS} -Wl,-dead_strip") |
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else() |
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set(OPENCV_EXTRA_EXE_LINKER_FLAGS "${OPENCV_EXTRA_EXE_LINKER_FLAGS} -Wl,--gc-sections") |
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set(OPENCV_EXTRA_SHARED_LINKER_FLAGS "${OPENCV_EXTRA_SHARED_LINKER_FLAGS} -Wl,--gc-sections") |
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set(OPENCV_EXTRA_MODULE_LINKER_FLAGS "${OPENCV_EXTRA_MODULE_LINKER_FLAGS} -Wl,--gc-sections") |
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endif() |
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endif() |
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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 "${OPENCV_EXTRA_SHARED_LINKER_FLAGS_RELEASE} /debug") |
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set(OPENCV_EXTRA_MODULE_LINKER_FLAGS_RELEASE "${OPENCV_EXTRA_MODULE_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 "${OPENCV_EXTRA_CXX_FLAGS} /FS") |
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endif() |
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if(AARCH64 AND NOT MSVC_VERSION LESS 1930) |
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set(OPENCV_EXTRA_FLAGS "${OPENCV_EXTRA_FLAGS} /D _ARM64_DISTINCT_NEON_TYPES") |
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endif() |
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endif() |
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if(PROJECT_NAME STREQUAL "OpenCV") |
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include("${OpenCV_SOURCE_DIR}/cmake/OpenCVCompilerOptimizations.cmake") |
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endif() |
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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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|
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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} ${OPENCV_EXTRA_CXX_FLAGS}" MATCHES " -fvisibility") |
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add_extra_compiler_option(-fvisibility=hidden) |
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add_extra_compiler_option(-fvisibility-inlines-hidden) |
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endif() |
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|
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# workaround gcc bug for aligned ld/st |
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# https://github.com/opencv/opencv/issues/13211 |
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if((PPC64LE AND NOT CMAKE_CROSSCOMPILING) OR OPENCV_FORCE_COMPILER_CHECK_VSX_ALIGNED) |
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ocv_check_runtime_flag("${CPU_BASELINE_FLAGS}" OPENCV_CHECK_VSX_ALIGNED "${OpenCV_SOURCE_DIR}/cmake/checks/runtime/cpu_vsx_aligned.cpp") |
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if(NOT OPENCV_CHECK_VSX_ALIGNED) |
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add_extra_compiler_option_force(-DCV_COMPILER_VSX_BROKEN_ALIGNED) |
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endif() |
|
endif() |
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# validate inline asm with fixes register number and constraints wa, wd, wf |
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if(PPC64LE) |
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ocv_check_compiler_flag(CXX "${CPU_BASELINE_FLAGS}" OPENCV_CHECK_VSX_ASM "${OpenCV_SOURCE_DIR}/cmake/checks/cpu_vsx_asm.cpp") |
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if(NOT OPENCV_CHECK_VSX_ASM) |
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add_extra_compiler_option_force(-DCV_COMPILER_VSX_BROKEN_ASM) |
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endif() |
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endif() |
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|
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# Apply "-Wl,--as-needed" linker flags: https://github.com/opencv/opencv/issues/7001 |
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if(NOT OPENCV_SKIP_LINK_AS_NEEDED) |
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if(UNIX AND (NOT APPLE OR NOT CMAKE_VERSION VERSION_LESS "3.2")) |
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set(_option "-Wl,--as-needed") |
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set(_saved_CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS}") |
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set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} ${_option}") # requires CMake 3.2+ and CMP0056 |
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ocv_check_compiler_flag(CXX "" HAVE_LINK_AS_NEEDED) |
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set(CMAKE_EXE_LINKER_FLAGS "${_saved_CMAKE_EXE_LINKER_FLAGS}") |
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if(HAVE_LINK_AS_NEEDED) |
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set(OPENCV_EXTRA_EXE_LINKER_FLAGS "${OPENCV_EXTRA_EXE_LINKER_FLAGS} ${_option}") |
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set(OPENCV_EXTRA_SHARED_LINKER_FLAGS "${OPENCV_EXTRA_SHARED_LINKER_FLAGS} ${_option}") |
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set(OPENCV_EXTRA_MODULE_LINKER_FLAGS "${OPENCV_EXTRA_MODULE_LINKER_FLAGS} ${_option}") |
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endif() |
|
endif() |
|
endif() |
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|
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# Apply "-Wl,--no-undefined" linker flags: https://github.com/opencv/opencv/pull/21347 |
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if(NOT OPENCV_SKIP_LINK_NO_UNDEFINED) |
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if(UNIX AND (NOT APPLE OR NOT CMAKE_VERSION VERSION_LESS "3.2")) |
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set(_option "-Wl,--no-undefined") |
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set(_saved_CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS}") |
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set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} ${_option}") # requires CMake 3.2+ and CMP0056 |
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ocv_check_compiler_flag(CXX "" HAVE_LINK_NO_UNDEFINED) |
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set(CMAKE_EXE_LINKER_FLAGS "${_saved_CMAKE_EXE_LINKER_FLAGS}") |
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if(HAVE_LINK_NO_UNDEFINED) |
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set(OPENCV_EXTRA_EXE_LINKER_FLAGS "${OPENCV_EXTRA_EXE_LINKER_FLAGS} ${_option}") |
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set(OPENCV_EXTRA_SHARED_LINKER_FLAGS "${OPENCV_EXTRA_SHARED_LINKER_FLAGS} ${_option}") |
|
set(OPENCV_EXTRA_MODULE_LINKER_FLAGS "${OPENCV_EXTRA_MODULE_LINKER_FLAGS} ${_option}") |
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endif() |
|
endif() |
|
endif() |
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|
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# combine all "extra" options |
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if(NOT OPENCV_SKIP_EXTRA_COMPILER_FLAGS) |
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set(CMAKE_C_FLAGS "${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} ${OPENCV_EXTRA_FLAGS_RELEASE}") |
|
set(CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE} ${OPENCV_EXTRA_FLAGS_RELEASE}") |
|
set(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} ${OPENCV_EXTRA_FLAGS_DEBUG}") |
|
set(CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} ${OPENCV_EXTRA_FLAGS_DEBUG}") |
|
set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} ${OPENCV_EXTRA_EXE_LINKER_FLAGS}") |
|
set(CMAKE_EXE_LINKER_FLAGS_RELEASE "${CMAKE_EXE_LINKER_FLAGS_RELEASE} ${OPENCV_EXTRA_EXE_LINKER_FLAGS_RELEASE}") |
|
set(CMAKE_EXE_LINKER_FLAGS_DEBUG "${CMAKE_EXE_LINKER_FLAGS_DEBUG} ${OPENCV_EXTRA_EXE_LINKER_FLAGS_DEBUG}") |
|
set(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} ${OPENCV_EXTRA_SHARED_LINKER_FLAGS}") |
|
set(CMAKE_SHARED_LINKER_FLAGS_RELEASE "${CMAKE_SHARED_LINKER_FLAGS_RELEASE} ${OPENCV_EXTRA_SHARED_LINKER_FLAGS_RELEASE}") |
|
set(CMAKE_SHARED_LINKER_FLAGS_DEBUG "${CMAKE_SHARED_LINKER_FLAGS_DEBUG} ${OPENCV_EXTRA_SHARED_LINKER_FLAGS_DEBUG}") |
|
set(CMAKE_MODULE_LINKER_FLAGS "${CMAKE_MODULE_LINKER_FLAGS} ${OPENCV_EXTRA_MODULE_LINKER_FLAGS}") |
|
set(CMAKE_MODULE_LINKER_FLAGS_RELEASE "${CMAKE_MODULE_LINKER_FLAGS_RELEASE} ${OPENCV_EXTRA_MODULE_LINKER_FLAGS_RELEASE}") |
|
set(CMAKE_MODULE_LINKER_FLAGS_DEBUG "${CMAKE_MODULE_LINKER_FLAGS_DEBUG} ${OPENCV_EXTRA_MODULE_LINKER_FLAGS_DEBUG}") |
|
endif() |
|
|
|
if(MSVC) |
|
if(NOT ENABLE_NOISY_WARNINGS) |
|
if(MSVC_VERSION EQUAL 1400) |
|
ocv_warnings_disable(CMAKE_CXX_FLAGS /wd4510 /wd4610 /wd4312 /wd4201 /wd4244 /wd4328 /wd4267) |
|
endif() |
|
endif() |
|
|
|
foreach(flags CMAKE_C_FLAGS CMAKE_C_FLAGS_RELEASE CMAKE_C_FLAGS_RELEASE CMAKE_CXX_FLAGS CMAKE_CXX_FLAGS_RELEASE CMAKE_CXX_FLAGS_DEBUG) |
|
string(REPLACE "/Zm1000" "" ${flags} "${${flags}}") |
|
endforeach() |
|
|
|
# Enable 'extern "C"' and asynchronous (division by zero, access violation) exceptions |
|
if(NOT OPENCV_SKIP_MSVC_EXCEPTIONS_FLAG) |
|
foreach(flags CMAKE_C_FLAGS CMAKE_C_FLAGS_RELEASE CMAKE_C_FLAGS_RELEASE CMAKE_CXX_FLAGS CMAKE_CXX_FLAGS_RELEASE CMAKE_CXX_FLAGS_DEBUG) |
|
string(REGEX REPLACE " /EH[^ ]* " " " ${flags} " ${${flags}}") |
|
endforeach() |
|
if(NOT " ${CMAKE_CXX_FLAGS} ${CMAKE_CXX_FLAGS_RELEASE} ${CMAKE_CXX_FLAGS_DEBUG}" MATCHES " /EH") |
|
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /EHa") |
|
endif() |
|
endif() |
|
|
|
# Enable [[attribute]] syntax checking to prevent silent failure: "attribute is ignored in this syntactic position" |
|
add_extra_compiler_option("/w15240") |
|
|
|
if(NOT ENABLE_NOISY_WARNINGS) |
|
ocv_warnings_disable(CMAKE_CXX_FLAGS /wd4127) # conditional expression is constant |
|
ocv_warnings_disable(CMAKE_CXX_FLAGS /wd4251) # class 'std::XXX' needs to have dll-interface to be used by clients of YYY |
|
ocv_warnings_disable(CMAKE_CXX_FLAGS /wd4324) # 'struct_name' : structure was padded due to __declspec(align()) |
|
ocv_warnings_disable(CMAKE_CXX_FLAGS /wd4275) # non dll-interface class 'std::exception' used as base for dll-interface class 'cv::Exception' |
|
ocv_warnings_disable(CMAKE_CXX_FLAGS /wd4512) # Assignment operator could not be generated |
|
ocv_warnings_disable(CMAKE_CXX_FLAGS /wd4589) # Constructor of abstract class 'cv::ORB' ignores initializer for virtual base class 'cv::Algorithm' |
|
ocv_warnings_disable(CMAKE_CXX_FLAGS /wd4819) # Symbols like delta or epsilon cannot be represented |
|
endif() |
|
|
|
if(CV_ICC AND NOT ENABLE_NOISY_WARNINGS) |
|
foreach(flags CMAKE_CXX_FLAGS CMAKE_CXX_FLAGS_RELEASE CMAKE_CXX_FLAGS_DEBUG CMAKE_C_FLAGS CMAKE_C_FLAGS_RELEASE CMAKE_C_FLAGS_DEBUG) |
|
string(REGEX REPLACE "( |^)/W[0-9]+( |$)" "\\1\\2" ${flags} "${${flags}}") |
|
endforeach() |
|
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /Qwd673") # PCH warning |
|
endif() |
|
endif() |
|
|
|
if(APPLE AND NOT CMAKE_CROSSCOMPILING AND NOT DEFINED ENV{LDFLAGS} AND EXISTS "/usr/local/lib") |
|
link_directories("/usr/local/lib") |
|
endif() |
|
|
|
if(ENABLE_BUILD_HARDENING) |
|
include("${CMAKE_CURRENT_LIST_DIR}/OpenCVCompilerDefenses.cmake") |
|
endif() |
|
|
|
if(MSVC) |
|
include("${CMAKE_CURRENT_LIST_DIR}/OpenCVCRTLinkage.cmake") |
|
add_definitions(-D_VARIADIC_MAX=10) |
|
endif() |
|
|
|
if(CMAKE_SYSTEM_NAME STREQUAL "Windows") |
|
get_directory_property(__DIRECTORY_COMPILE_DEFINITIONS COMPILE_DEFINITIONS) |
|
if((NOT " ${CMAKE_CXX_FLAGS} ${CMAKE_CXX_FLAGS_RELEASE} ${OPENCV_EXTRA_CXX_FLAGS} ${OPENCV_EXTRA_FLAGS_RELEASE} ${__DIRECTORY_COMPILE_DEFINITIONS}" MATCHES "_WIN32_WINNT" |
|
AND NOT OPENCV_CMAKE_SKIP_MACRO_WIN32_WINNT) |
|
OR OPENCV_CMAKE_FORCE_MACRO_WIN32_WINNT |
|
) |
|
# https://docs.microsoft.com/en-us/cpp/porting/modifying-winver-and-win32-winnt |
|
# Target Windows 7 API |
|
set(OPENCV_CMAKE_MACRO_WIN32_WINNT "0x0601" CACHE STRING "Value of _WIN32_WINNT macro") |
|
add_definitions(-D_WIN32_WINNT=${OPENCV_CMAKE_MACRO_WIN32_WINNT}) |
|
endif() |
|
endif() |
|
|
|
# Enable compiler options for OpenCV modules/apps/samples only (ignore 3rdparty) |
|
macro(ocv_add_modules_compiler_options) |
|
if(MSVC AND NOT OPENCV_SKIP_MSVC_W4_OPTION) |
|
foreach(flags CMAKE_CXX_FLAGS CMAKE_CXX_FLAGS_RELEASE CMAKE_CXX_FLAGS_DEBUG) |
|
string(REPLACE "/W3" "/W4" ${flags} "${${flags}}") |
|
endforeach() |
|
endif() |
|
if(OPENCV_ENABLE_MEMORY_SANITIZER) |
|
add_definitions(-DOPENCV_ENABLE_MEMORY_SANITIZER=1) |
|
endif() |
|
endmacro() |
|
|
|
# adjust -Wl,-rpath-link |
|
if(CMAKE_SKIP_RPATH) |
|
if((NOT CMAKE_CROSSCOMPILING OR OPENCV_ENABLE_LINKER_RPATH_LINK_ORIGIN) AND NOT OPENCV_SKIP_LINKER_RPATH_LINK_ORIGIN) |
|
if(DEFINED CMAKE_SHARED_LIBRARY_RPATH_ORIGIN_TOKEN) |
|
list(APPEND CMAKE_PLATFORM_RUNTIME_PATH "${CMAKE_SHARED_LIBRARY_RPATH_ORIGIN_TOKEN}") |
|
else() |
|
list(APPEND CMAKE_PLATFORM_RUNTIME_PATH "\$ORIGIN") |
|
endif() |
|
elseif(NOT OPENCV_SKIP_LINKER_RPATH_LINK_BINARY_LIB) |
|
list(APPEND CMAKE_PLATFORM_RUNTIME_PATH "${LIBRARY_OUTPUT_PATH}") |
|
endif() |
|
endif() |
|
if(OPENCV_EXTRA_RPATH_LINK_PATH) |
|
string(REPLACE ":" ";" OPENCV_EXTRA_RPATH_LINK_PATH_ "${OPENCV_EXTRA_RPATH_LINK_PATH}") |
|
list(APPEND CMAKE_PLATFORM_RUNTIME_PATH ${OPENCV_EXTRA_RPATH_LINK_PATH_}) |
|
if(NOT CMAKE_EXECUTABLE_RPATH_LINK_CXX_FLAG) |
|
message(WARNING "OPENCV_EXTRA_RPATH_LINK_PATH may not work properly because CMAKE_EXECUTABLE_RPATH_LINK_CXX_FLAG is not defined (not supported)") |
|
endif() |
|
endif() |
|
|
|
# Control MSVC /MP flag |
|
# Input variables: OPENCV_MSVC_PARALLEL (ON,1,2,3,...) + OPENCV_SKIP_MSVC_PARALLEL |
|
# Details: |
|
# - https://docs.microsoft.com/en-us/cpp/build/reference/mp-build-with-multiple-processes |
|
# - https://docs.microsoft.com/en-us/cpp/build/reference/cl-environment-variables |
|
# - https://gitlab.kitware.com/cmake/cmake/merge_requests/1718/diffs |
|
if(CMAKE_GENERATOR MATCHES "Visual Studio" AND CMAKE_CXX_COMPILER_ID MATCHES "MSVC|Intel") |
|
ocv_check_environment_variables(OPENCV_SKIP_MSVC_PARALLEL) |
|
if(OPENCV_SKIP_MSVC_PARALLEL) |
|
# nothing |
|
elseif(" ${CMAKE_CXX_FLAGS}" MATCHES "/MP") |
|
# nothing, already defined in compiler flags |
|
elseif(DEFINED ENV{CL} AND " $ENV{CL}" MATCHES "/MP") |
|
# nothing, compiler will use CL environment variable |
|
elseif(DEFINED ENV{_CL_} AND " $ENV{_CL_}" MATCHES "/MP") |
|
# nothing, compiler will use _CL_ environment variable |
|
else() |
|
ocv_check_environment_variables(OPENCV_MSVC_PARALLEL) |
|
set(_mp_value "ON") |
|
if(DEFINED OPENCV_MSVC_PARALLEL) |
|
set(_mp_value "${OPENCV_MSVC_PARALLEL}") |
|
endif() |
|
set(OPENCV_MSVC_PARALLEL "${_mp_value}" CACHE STRING "Control MSVC /MP flag") |
|
if(_mp_value) |
|
if(_mp_value GREATER 0) |
|
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} /MP${_mp_value}") |
|
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /MP${_mp_value}") |
|
else() |
|
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} /MP") |
|
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /MP") |
|
endif() |
|
endif() |
|
endif() |
|
endif()
|
|
|