endif()
endfunction()
variable_watch(CMAKE_COMPILER_IS_CCACHE access_CMAKE_COMPILER_IS_CCACHE)
-if(ENABLE_CCACHE AND NOT OPENCV_COMPILER_IS_CCACHE AND NOT CMAKE_GENERATOR MATCHES "Xcode")
+if(ENABLE_CCACHE AND NOT OPENCV_COMPILER_IS_CCACHE)
# This works fine with Unix Makefiles and Ninja generators
find_host_program(CCACHE_PROGRAM ccache)
if(CCACHE_PROGRAM)
message(STATUS "Looking for ccache - found (${CCACHE_PROGRAM})")
get_property(__OLD_RULE_LAUNCH_COMPILE GLOBAL PROPERTY RULE_LAUNCH_COMPILE)
- if(__OLD_RULE_LAUNCH_COMPILE)
+ if(CMAKE_GENERATOR MATCHES "Xcode")
+ configure_file("${CMAKE_CURRENT_LIST_DIR}/templates/xcode-launch-c.in" "${CMAKE_BINARY_DIR}/xcode-launch-c")
+ configure_file("${CMAKE_CURRENT_LIST_DIR}/templates/xcode-launch-cxx.in" "${CMAKE_BINARY_DIR}/xcode-launch-cxx")
+ execute_process(COMMAND chmod a+rx
+ "${CMAKE_BINARY_DIR}/xcode-launch-c"
+ "${CMAKE_BINARY_DIR}/xcode-launch-cxx"
+ )
+ # Xcode project attributes
+ set(CMAKE_XCODE_ATTRIBUTE_CC "${CMAKE_BINARY_DIR}/xcode-launch-c")
+ set(CMAKE_XCODE_ATTRIBUTE_CXX "${CMAKE_BINARY_DIR}/xcode-launch-cxx")
+ set(CMAKE_XCODE_ATTRIBUTE_LD "${CMAKE_BINARY_DIR}/xcode-launch-c")
+ set(CMAKE_XCODE_ATTRIBUTE_LDPLUSPLUS "${CMAKE_BINARY_DIR}/xcode-launch-cxx")
+ set(OPENCV_COMPILER_IS_CCACHE 1)
+ message(STATUS "ccache: enable support through Xcode project properties")
+ elseif(__OLD_RULE_LAUNCH_COMPILE)
message(STATUS "Can't replace CMake compiler launcher")
else()
set_property(GLOBAL PROPERTY RULE_LAUNCH_COMPILE "${CCACHE_PROGRAM}")
add_extra_compiler_option(-Wshadow)
add_extra_compiler_option(-Wsign-promo)
add_extra_compiler_option(-Wuninitialized)
- add_extra_compiler_option(-Winit-self)
if(CV_GCC AND (CMAKE_CXX_COMPILER_VERSION VERSION_GREATER 6.0) AND (CMAKE_CXX_COMPILER_VERSION VERSION_LESS 7.0))
add_extra_compiler_option(-Wno-psabi)
endif()
if(CV_GCC AND CMAKE_CXX_COMPILER_VERSION VERSION_LESS 5.0)
add_extra_compiler_option(-Wno-missing-field-initializers) # GCC 4.x emits warnings about {}, fixed in GCC 5+
endif()
+ if(CV_CLANG AND NOT CMAKE_CXX_COMPILER_ID STREQUAL "AppleClang" AND NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS 10.0)
+ add_extra_compiler_option(-Wno-deprecated-enum-enum-conversion)
+ add_extra_compiler_option(-Wno-deprecated-anon-enum-enum-conversion)
+ endif()
endif()
add_extra_compiler_option(-fdiagnostics-show-option)
endif()
# We need pthread's
- if(UNIX AND NOT ANDROID AND NOT (APPLE AND CV_CLANG)) # TODO
+ if((UNIX
+ AND NOT ANDROID
+ AND NOT (APPLE AND CV_CLANG)
+ AND NOT EMSCRIPTEN
+ )
+ OR (EMSCRIPTEN AND WITH_PTHREADS_PF) # https://github.com/opencv/opencv/issues/20285
+ )
add_extra_compiler_option(-pthread)
endif()
# Profiling?
if(ENABLE_PROFILING)
- add_extra_compiler_option("-pg -g")
# turn off incompatible options
foreach(flags CMAKE_CXX_FLAGS CMAKE_C_FLAGS CMAKE_CXX_FLAGS_RELEASE CMAKE_C_FLAGS_RELEASE CMAKE_CXX_FLAGS_DEBUG CMAKE_C_FLAGS_DEBUG
OPENCV_EXTRA_FLAGS_RELEASE OPENCV_EXTRA_FLAGS_DEBUG OPENCV_EXTRA_C_FLAGS OPENCV_EXTRA_CXX_FLAGS)
string(REPLACE "-ffunction-sections" "" ${flags} "${${flags}}")
string(REPLACE "-fdata-sections" "" ${flags} "${${flags}}")
endforeach()
+ # -pg should be placed both in the linker and in the compiler settings
+ set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -pg")
+ add_extra_compiler_option("-pg -g")
else()
if(MSVC)
# TODO: Clang/C2 is not supported
if(APPLE)
set(OPENCV_EXTRA_EXE_LINKER_FLAGS "${OPENCV_EXTRA_EXE_LINKER_FLAGS} -Wl,-dead_strip")
set(OPENCV_EXTRA_SHARED_LINKER_FLAGS "${OPENCV_EXTRA_SHARED_LINKER_FLAGS} -Wl,-dead_strip")
+ set(OPENCV_EXTRA_MODULE_LINKER_FLAGS "${OPENCV_EXTRA_MODULE_LINKER_FLAGS} -Wl,-dead_strip")
else()
set(OPENCV_EXTRA_EXE_LINKER_FLAGS "${OPENCV_EXTRA_EXE_LINKER_FLAGS} -Wl,--gc-sections")
set(OPENCV_EXTRA_SHARED_LINKER_FLAGS "${OPENCV_EXTRA_SHARED_LINKER_FLAGS} -Wl,--gc-sections")
+ set(OPENCV_EXTRA_MODULE_LINKER_FLAGS "${OPENCV_EXTRA_MODULE_LINKER_FLAGS} -Wl,--gc-sections")
endif()
endif()
endif()
set(OPENCV_EXTRA_FLAGS_RELEASE "${OPENCV_EXTRA_FLAGS_RELEASE} /Zi")
set(OPENCV_EXTRA_EXE_LINKER_FLAGS_RELEASE "${OPENCV_EXTRA_EXE_LINKER_FLAGS_RELEASE} /debug")
set(OPENCV_EXTRA_SHARED_LINKER_FLAGS_RELEASE "${OPENCV_EXTRA_SHARED_LINKER_FLAGS_RELEASE} /debug")
+ set(OPENCV_EXTRA_MODULE_LINKER_FLAGS_RELEASE "${OPENCV_EXTRA_MODULE_LINKER_FLAGS_RELEASE} /debug")
endif()
# Remove unreferenced functions: function level linking
if(HAVE_LINK_AS_NEEDED)
set(OPENCV_EXTRA_EXE_LINKER_FLAGS "${OPENCV_EXTRA_EXE_LINKER_FLAGS} ${_option}")
set(OPENCV_EXTRA_SHARED_LINKER_FLAGS "${OPENCV_EXTRA_SHARED_LINKER_FLAGS} ${_option}")
+ set(OPENCV_EXTRA_MODULE_LINKER_FLAGS "${OPENCV_EXTRA_MODULE_LINKER_FLAGS} ${_option}")
+ endif()
+ endif()
+endif()
+
+# Apply "-Wl,--no-undefined" linker flags: https://github.com/opencv/opencv/pull/21347
+if(NOT OPENCV_SKIP_LINK_NO_UNDEFINED)
+ if(UNIX AND (NOT APPLE OR NOT CMAKE_VERSION VERSION_LESS "3.2"))
+ set(_option "-Wl,--no-undefined")
+ set(_saved_CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS}")
+ set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} ${_option}") # requires CMake 3.2+ and CMP0056
+ ocv_check_compiler_flag(CXX "" HAVE_LINK_NO_UNDEFINED)
+ set(CMAKE_EXE_LINKER_FLAGS "${_saved_CMAKE_EXE_LINKER_FLAGS}")
+ if(HAVE_LINK_NO_UNDEFINED)
+ set(OPENCV_EXTRA_EXE_LINKER_FLAGS "${OPENCV_EXTRA_EXE_LINKER_FLAGS} ${_option}")
+ set(OPENCV_EXTRA_SHARED_LINKER_FLAGS "${OPENCV_EXTRA_SHARED_LINKER_FLAGS} ${_option}")
+ set(OPENCV_EXTRA_MODULE_LINKER_FLAGS "${OPENCV_EXTRA_MODULE_LINKER_FLAGS} ${_option}")
endif()
endif()
endif()
set(CMAKE_SHARED_LINKER_FLAGS "${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)
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
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()
projects / platform / upstream / opencv.git / blobdiff