mirror of https://github.com/opencv/opencv.git
Open Source Computer Vision Library
https://opencv.org/
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
302 lines
12 KiB
302 lines
12 KiB
if(MINGW OR (X86 AND UNIX AND NOT APPLE)) |
|
# mingw compiler is known to produce unstable SSE code with -O3 hence we are trying to use -O2 instead |
|
if(CMAKE_COMPILER_IS_GNUCXX) |
|
foreach(flags CMAKE_CXX_FLAGS CMAKE_CXX_FLAGS_RELEASE CMAKE_CXX_FLAGS_DEBUG) |
|
string(REPLACE "-O3" "-O2" ${flags} "${${flags}}") |
|
endforeach() |
|
endif() |
|
|
|
if(CMAKE_COMPILER_IS_GNUCC) |
|
foreach(flags CMAKE_C_FLAGS CMAKE_C_FLAGS_RELEASE CMAKE_C_FLAGS_DEBUG) |
|
string(REPLACE "-O3" "-O2" ${flags} "${${flags}}") |
|
endforeach() |
|
endif() |
|
endif() |
|
|
|
if(MSVC) |
|
string(REGEX REPLACE "^ *| * $" "" CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}") |
|
string(REGEX REPLACE "^ *| * $" "" CMAKE_CXX_FLAGS_INIT "${CMAKE_CXX_FLAGS_INIT}") |
|
if(CMAKE_CXX_FLAGS STREQUAL CMAKE_CXX_FLAGS_INIT) |
|
# override cmake default exception handling option |
|
string(REPLACE "/EHsc" "/EHa" CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}") |
|
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}" CACHE STRING "Flags used by the compiler during all build types." FORCE) |
|
endif() |
|
endif() |
|
|
|
set(OPENCV_EXTRA_FLAGS "") |
|
set(OPENCV_EXTRA_C_FLAGS "") |
|
set(OPENCV_EXTRA_CXX_FLAGS "") |
|
set(OPENCV_EXTRA_FLAGS_RELEASE "") |
|
set(OPENCV_EXTRA_FLAGS_DEBUG "") |
|
set(OPENCV_EXTRA_EXE_LINKER_FLAGS "") |
|
set(OPENCV_EXTRA_EXE_LINKER_FLAGS_RELEASE "") |
|
set(OPENCV_EXTRA_EXE_LINKER_FLAGS_DEBUG "") |
|
|
|
macro(add_extra_compiler_option option) |
|
if(CMAKE_BUILD_TYPE) |
|
set(CMAKE_TRY_COMPILE_CONFIGURATION ${CMAKE_BUILD_TYPE}) |
|
endif() |
|
ocv_check_flag_support(CXX "${option}" _varname "${OPENCV_EXTRA_CXX_FLAGS} ${ARGN}") |
|
if(${_varname}) |
|
set(OPENCV_EXTRA_CXX_FLAGS "${OPENCV_EXTRA_CXX_FLAGS} ${option}") |
|
endif() |
|
|
|
ocv_check_flag_support(C "${option}" _varname "${OPENCV_EXTRA_C_FLAGS} ${ARGN}") |
|
if(${_varname}) |
|
set(OPENCV_EXTRA_C_FLAGS "${OPENCV_EXTRA_C_FLAGS} ${option}") |
|
endif() |
|
endmacro() |
|
|
|
# OpenCV fails some tests when 'char' is 'unsigned' by default |
|
add_extra_compiler_option(-fsigned-char) |
|
|
|
if(MINGW) |
|
# http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40838 |
|
# here we are trying to workaround the problem |
|
add_extra_compiler_option(-mstackrealign) |
|
if(NOT HAVE_CXX_MSTACKREALIGN) |
|
add_extra_compiler_option(-mpreferred-stack-boundary=2) |
|
endif() |
|
endif() |
|
|
|
if(CMAKE_COMPILER_IS_GNUCXX) |
|
# High level of warnings. |
|
add_extra_compiler_option(-W) |
|
add_extra_compiler_option(-Wall) |
|
add_extra_compiler_option(-Werror=return-type) |
|
add_extra_compiler_option(-Werror=non-virtual-dtor) |
|
add_extra_compiler_option(-Werror=address) |
|
add_extra_compiler_option(-Werror=sequence-point) |
|
add_extra_compiler_option(-Wformat) |
|
add_extra_compiler_option(-Werror=format-security -Wformat) |
|
add_extra_compiler_option(-Wmissing-declarations) |
|
add_extra_compiler_option(-Wmissing-prototypes) |
|
add_extra_compiler_option(-Wstrict-prototypes) |
|
add_extra_compiler_option(-Wundef) |
|
add_extra_compiler_option(-Winit-self) |
|
add_extra_compiler_option(-Wpointer-arith) |
|
add_extra_compiler_option(-Wshadow) |
|
add_extra_compiler_option(-Wsign-promo) |
|
|
|
if(ENABLE_NOISY_WARNINGS) |
|
add_extra_compiler_option(-Wcast-align) |
|
add_extra_compiler_option(-Wstrict-aliasing=2) |
|
else() |
|
add_extra_compiler_option(-Wno-narrowing) |
|
add_extra_compiler_option(-Wno-delete-non-virtual-dtor) |
|
add_extra_compiler_option(-Wno-unnamed-type-template-args) |
|
endif() |
|
add_extra_compiler_option(-fdiagnostics-show-option) |
|
|
|
# The -Wno-long-long is required in 64bit systems when including sytem headers. |
|
if(X86_64) |
|
add_extra_compiler_option(-Wno-long-long) |
|
endif() |
|
|
|
# We need pthread's |
|
if(UNIX AND NOT ANDROID AND NOT (APPLE AND CMAKE_COMPILER_IS_CLANGCXX)) |
|
add_extra_compiler_option(-pthread) |
|
endif() |
|
|
|
if(OPENCV_WARNINGS_ARE_ERRORS) |
|
add_extra_compiler_option(-Werror) |
|
endif() |
|
|
|
if(X86 AND NOT MINGW64 AND NOT X86_64 AND NOT APPLE) |
|
add_extra_compiler_option(-march=i686) |
|
endif() |
|
|
|
# Other optimizations |
|
if(ENABLE_OMIT_FRAME_POINTER) |
|
add_extra_compiler_option(-fomit-frame-pointer) |
|
else() |
|
add_extra_compiler_option(-fno-omit-frame-pointer) |
|
endif() |
|
if(ENABLE_FAST_MATH) |
|
add_extra_compiler_option(-ffast-math) |
|
endif() |
|
if(ENABLE_POWERPC) |
|
add_extra_compiler_option("-mcpu=G3 -mtune=G5") |
|
endif() |
|
if(ENABLE_SSE) |
|
add_extra_compiler_option(-msse) |
|
endif() |
|
if(ENABLE_SSE2) |
|
add_extra_compiler_option(-msse2) |
|
endif() |
|
|
|
# SSE3 and further should be disabled under MingW because it generates compiler errors |
|
if(NOT MINGW) |
|
if(ENABLE_AVX) |
|
add_extra_compiler_option(-mavx) |
|
endif() |
|
|
|
# GCC depresses SSEx instructions when -mavx is used. Instead, it generates new AVX instructions or AVX equivalence for all SSEx instructions when needed. |
|
if(NOT OPENCV_EXTRA_CXX_FLAGS MATCHES "-mavx") |
|
if(ENABLE_SSE3) |
|
add_extra_compiler_option(-msse3) |
|
endif() |
|
|
|
if(ENABLE_SSSE3) |
|
add_extra_compiler_option(-mssse3) |
|
endif() |
|
|
|
if(ENABLE_SSE41) |
|
add_extra_compiler_option(-msse4.1) |
|
endif() |
|
|
|
if(ENABLE_SSE42) |
|
add_extra_compiler_option(-msse4.2) |
|
endif() |
|
endif() |
|
endif(NOT MINGW) |
|
|
|
if(X86 OR X86_64) |
|
if(NOT APPLE AND CMAKE_SIZEOF_VOID_P EQUAL 4) |
|
if(OPENCV_EXTRA_CXX_FLAGS MATCHES "-m(sse2|avx)") |
|
add_extra_compiler_option(-mfpmath=sse)# !! important - be on the same wave with x64 compilers |
|
else() |
|
add_extra_compiler_option(-mfpmath=387) |
|
endif() |
|
endif() |
|
endif() |
|
|
|
if(ENABLE_NEON) |
|
add_extra_compiler_option(-mfpu=neon) |
|
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 "-fomit-frame-pointer" "" ${flags} "${${flags}}") |
|
string(REPLACE "-ffunction-sections" "" ${flags} "${${flags}}") |
|
endforeach() |
|
elseif(NOT APPLE AND NOT ANDROID) |
|
# Remove unreferenced functions: function level linking |
|
add_extra_compiler_option(-ffunction-sections) |
|
endif() |
|
|
|
set(OPENCV_EXTRA_FLAGS_RELEASE "${OPENCV_EXTRA_FLAGS_RELEASE} -DNDEBUG") |
|
set(OPENCV_EXTRA_FLAGS_DEBUG "${OPENCV_EXTRA_FLAGS_DEBUG} -O0 -DDEBUG -D_DEBUG") |
|
endif() |
|
|
|
if(MSVC) |
|
set(OPENCV_EXTRA_FLAGS "${OPENCV_EXTRA_FLAGS} /D _CRT_SECURE_NO_DEPRECATE /D _CRT_NONSTDC_NO_DEPRECATE /D _SCL_SECURE_NO_WARNINGS") |
|
# 64-bit portability warnings, in MSVC80 |
|
if(MSVC80) |
|
set(OPENCV_EXTRA_FLAGS "${OPENCV_EXTRA_FLAGS} /Wp64") |
|
endif() |
|
|
|
if(BUILD_WITH_DEBUG_INFO) |
|
set(OPENCV_EXTRA_EXE_LINKER_FLAGS_RELEASE "${OPENCV_EXTRA_EXE_LINKER_FLAGS_RELEASE} /debug") |
|
endif() |
|
|
|
# Remove unreferenced functions: function level linking |
|
set(OPENCV_EXTRA_FLAGS "${OPENCV_EXTRA_FLAGS} /Gy") |
|
if(NOT MSVC_VERSION LESS 1400) |
|
set(OPENCV_EXTRA_FLAGS "${OPENCV_EXTRA_FLAGS} /bigobj") |
|
endif() |
|
if(BUILD_WITH_DEBUG_INFO) |
|
set(OPENCV_EXTRA_FLAGS_RELEASE "${OPENCV_EXTRA_FLAGS_RELEASE} /Zi") |
|
endif() |
|
|
|
if(ENABLE_AVX AND NOT MSVC_VERSION LESS 1600) |
|
set(OPENCV_EXTRA_FLAGS "${OPENCV_EXTRA_FLAGS} /arch:AVX") |
|
endif() |
|
|
|
if(ENABLE_SSE4_1 AND CV_ICC AND NOT OPENCV_EXTRA_FLAGS MATCHES "/arch:") |
|
set(OPENCV_EXTRA_FLAGS "${OPENCV_EXTRA_FLAGS} /arch:SSE4.1") |
|
endif() |
|
|
|
if(ENABLE_SSE3 AND CV_ICC AND NOT OPENCV_EXTRA_FLAGS MATCHES "/arch:") |
|
set(OPENCV_EXTRA_FLAGS "${OPENCV_EXTRA_FLAGS} /arch:SSE3") |
|
endif() |
|
|
|
if(NOT MSVC64) |
|
# 64-bit MSVC compiler uses SSE/SSE2 by default |
|
if(ENABLE_SSE2 AND NOT OPENCV_EXTRA_FLAGS MATCHES "/arch:") |
|
set(OPENCV_EXTRA_FLAGS "${OPENCV_EXTRA_FLAGS} /arch:SSE2") |
|
endif() |
|
if(ENABLE_SSE AND NOT OPENCV_EXTRA_FLAGS MATCHES "/arch:") |
|
set(OPENCV_EXTRA_FLAGS "${OPENCV_EXTRA_FLAGS} /arch:SSE") |
|
endif() |
|
endif() |
|
|
|
if(ENABLE_SSE OR ENABLE_SSE2 OR ENABLE_SSE3 OR ENABLE_SSE4_1 OR ENABLE_AVX) |
|
set(OPENCV_EXTRA_FLAGS "${OPENCV_EXTRA_FLAGS} /Oi") |
|
endif() |
|
|
|
if(X86 OR X86_64) |
|
if(CMAKE_SIZEOF_VOID_P EQUAL 4 AND ENABLE_SSE2) |
|
set(OPENCV_EXTRA_FLAGS "${OPENCV_EXTRA_FLAGS} /fp:fast") # !! important - be on the same wave with x64 compilers |
|
endif() |
|
endif() |
|
|
|
if(OPENCV_WARNINGS_ARE_ERRORS) |
|
set(OPENCV_EXTRA_FLAGS "${OPENCV_EXTRA_FLAGS} /WX") |
|
endif() |
|
endif() |
|
|
|
# Extra link libs if the user selects building static libs: |
|
if(NOT BUILD_SHARED_LIBS AND CMAKE_COMPILER_IS_GNUCXX AND NOT ANDROID) |
|
# Android does not need these settings because they are already set by toolchain file |
|
set(OPENCV_LINKER_LIBS ${OPENCV_LINKER_LIBS} stdc++) |
|
set(OPENCV_EXTRA_FLAGS "-fPIC ${OPENCV_EXTRA_FLAGS}") |
|
endif() |
|
|
|
# Add user supplied extra options (optimization, etc...) |
|
# ========================================================== |
|
set(OPENCV_EXTRA_FLAGS "${OPENCV_EXTRA_FLAGS}" CACHE INTERNAL "Extra compiler options") |
|
set(OPENCV_EXTRA_C_FLAGS "${OPENCV_EXTRA_C_FLAGS}" CACHE INTERNAL "Extra compiler options for C sources") |
|
set(OPENCV_EXTRA_CXX_FLAGS "${OPENCV_EXTRA_CXX_FLAGS}" CACHE INTERNAL "Extra compiler options for C++ sources") |
|
set(OPENCV_EXTRA_FLAGS_RELEASE "${OPENCV_EXTRA_FLAGS_RELEASE}" CACHE INTERNAL "Extra compiler options for Release build") |
|
set(OPENCV_EXTRA_FLAGS_DEBUG "${OPENCV_EXTRA_FLAGS_DEBUG}" CACHE INTERNAL "Extra compiler options for Debug build") |
|
set(OPENCV_EXTRA_EXE_LINKER_FLAGS "${OPENCV_EXTRA_EXE_LINKER_FLAGS}" CACHE INTERNAL "Extra linker flags") |
|
set(OPENCV_EXTRA_EXE_LINKER_FLAGS_RELEASE "${OPENCV_EXTRA_EXE_LINKER_FLAGS_RELEASE}" CACHE INTERNAL "Extra linker flags for Release build") |
|
set(OPENCV_EXTRA_EXE_LINKER_FLAGS_DEBUG "${OPENCV_EXTRA_EXE_LINKER_FLAGS_DEBUG}" CACHE INTERNAL "Extra linker flags for Debug build") |
|
|
|
# set default visibility to hidden |
|
if(CMAKE_COMPILER_IS_GNUCXX AND CMAKE_OPENCV_GCC_VERSION_NUM GREATER 399) |
|
add_extra_compiler_option(-fvisibility=hidden) |
|
add_extra_compiler_option(-fvisibility-inlines-hidden) |
|
endif() |
|
|
|
#combine all "extra" options |
|
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${OPENCV_EXTRA_FLAGS} ${OPENCV_EXTRA_C_FLAGS}") |
|
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${OPENCV_EXTRA_FLAGS} ${OPENCV_EXTRA_CXX_FLAGS}") |
|
set(CMAKE_CXX_FLAGS_RELEASE "${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} ${OPENCV_EXTRA_EXE_LINKER_FLAGS_DEBUG}") |
|
|
|
if(MSVC) |
|
# avoid warnings from MSVC about overriding the /W* option |
|
# we replace /W3 with /W4 only for C++ files, |
|
# since all the 3rd-party libraries OpenCV uses are in C, |
|
# and we do not care about their warnings. |
|
string(REPLACE "/W3" "/W4" CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}") |
|
string(REPLACE "/W3" "/W4" CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE}") |
|
string(REPLACE "/W3" "/W4" CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG}") |
|
|
|
if(NOT ENABLE_NOISY_WARNINGS AND MSVC_VERSION EQUAL 1400) |
|
ocv_warnings_disable(CMAKE_CXX_FLAGS /wd4510 /wd4610 /wd4312 /wd4201 /wd4244 /wd4328 /wd4267) |
|
endif() |
|
|
|
# allow extern "C" functions throw exceptions |
|
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 "/EHsc-" "/EHs" ${flags} "${${flags}}") |
|
string(REPLACE "/EHsc" "/EHs" ${flags} "${${flags}}") |
|
|
|
string(REPLACE "/Zm1000" "" ${flags} "${${flags}}") |
|
endforeach() |
|
|
|
if(NOT ENABLE_NOISY_WARNINGS) |
|
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /wd4251") #class 'std::XXX' needs to have dll-interface to be used by clients of YYY |
|
endif() |
|
endif()
|
|
|