mirror of
https://github.com/opencv/opencv.git
synced 2024-11-24 11:10:21 +08:00
175 lines
6.2 KiB
CMake
175 lines
6.2 KiB
CMake
# ----------------------------------------------------------------------------
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# Detect Microsoft compiler:
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# ----------------------------------------------------------------------------
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if(CMAKE_CL_64)
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set(MSVC64 1)
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endif()
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if(CMAKE_CXX_COMPILER_ID STREQUAL "Clang")
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set(CMAKE_COMPILER_IS_GNUCXX 1)
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set(CMAKE_COMPILER_IS_CLANGCXX 1)
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endif()
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if(CMAKE_C_COMPILER_ID STREQUAL "Clang")
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set(CMAKE_COMPILER_IS_GNUCC 1)
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set(CMAKE_COMPILER_IS_CLANGCC 1)
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endif()
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if("${CMAKE_CXX_COMPILER};${CMAKE_C_COMPILER}" MATCHES "ccache")
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set(CMAKE_COMPILER_IS_CCACHE 1)
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endif()
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# ----------------------------------------------------------------------------
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# Detect Intel ICC compiler -- for -fPIC in 3rdparty ( UNIX ONLY ):
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# see include/opencv/cxtypes.h file for related ICC & CV_ICC defines.
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# NOTE: The system needs to determine if the '-fPIC' option needs to be added
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# for the 3rdparty static libs being compiled. The CMakeLists.txt files
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# in 3rdparty use the CV_ICC definition being set here to determine if
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# the -fPIC flag should be used.
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# ----------------------------------------------------------------------------
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if(UNIX)
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if (__ICL)
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set(CV_ICC __ICL)
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elseif(__ICC)
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set(CV_ICC __ICC)
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elseif(__ECL)
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set(CV_ICC __ECL)
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elseif(__ECC)
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set(CV_ICC __ECC)
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elseif(__INTEL_COMPILER)
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set(CV_ICC __INTEL_COMPILER)
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elseif(CMAKE_C_COMPILER MATCHES "icc")
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set(CV_ICC icc_matches_c_compiler)
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endif()
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endif()
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if(MSVC AND CMAKE_C_COMPILER MATCHES "icc|icl")
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set(CV_ICC __INTEL_COMPILER_FOR_WINDOWS)
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endif()
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# ----------------------------------------------------------------------------
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# Detect GNU version:
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# ----------------------------------------------------------------------------
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if(CMAKE_COMPILER_IS_CLANGCXX)
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set(CMAKE_GCC_REGEX_VERSION "4.2.1")
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set(CMAKE_OPENCV_GCC_VERSION_MAJOR 4)
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set(CMAKE_OPENCV_GCC_VERSION_MINOR 2)
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set(CMAKE_OPENCV_GCC_VERSION 42)
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set(CMAKE_OPENCV_GCC_VERSION_NUM 402)
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execute_process(COMMAND ${CMAKE_CXX_COMPILER} ${CMAKE_CXX_COMPILER_ARG1} -v
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ERROR_VARIABLE CMAKE_OPENCV_CLANG_VERSION_FULL
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ERROR_STRIP_TRAILING_WHITESPACE)
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string(REGEX MATCH "version.*$" CMAKE_OPENCV_CLANG_VERSION_FULL "${CMAKE_OPENCV_CLANG_VERSION_FULL}")
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string(REGEX MATCH "[0-9]+\\.[0-9]+" CMAKE_CLANG_REGEX_VERSION "${CMAKE_OPENCV_CLANG_VERSION_FULL}")
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elseif(CMAKE_COMPILER_IS_GNUCXX)
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execute_process(COMMAND ${CMAKE_CXX_COMPILER} ${CMAKE_CXX_COMPILER_ARG1} -dumpversion
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OUTPUT_VARIABLE CMAKE_OPENCV_GCC_VERSION_FULL
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OUTPUT_STRIP_TRAILING_WHITESPACE)
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execute_process(COMMAND ${CMAKE_CXX_COMPILER} ${CMAKE_CXX_COMPILER_ARG1} -v
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ERROR_VARIABLE CMAKE_OPENCV_GCC_INFO_FULL
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OUTPUT_STRIP_TRAILING_WHITESPACE)
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# Typical output in CMAKE_OPENCV_GCC_VERSION_FULL: "c+//0 (whatever) 4.2.3 (...)"
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# Look for the version number, major.minor.build
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string(REGEX MATCH "[0-9]+\\.[0-9]+\\.[0-9]+" CMAKE_GCC_REGEX_VERSION "${CMAKE_OPENCV_GCC_VERSION_FULL}")
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if(NOT CMAKE_GCC_REGEX_VERSION)#major.minor
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string(REGEX MATCH "[0-9]+\\.[0-9]+" CMAKE_GCC_REGEX_VERSION "${CMAKE_OPENCV_GCC_VERSION_FULL}")
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endif()
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if(CMAKE_GCC_REGEX_VERSION)
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# Split the parts:
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string(REGEX MATCHALL "[0-9]+" CMAKE_OPENCV_GCC_VERSIONS "${CMAKE_GCC_REGEX_VERSION}")
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list(GET CMAKE_OPENCV_GCC_VERSIONS 0 CMAKE_OPENCV_GCC_VERSION_MAJOR)
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list(GET CMAKE_OPENCV_GCC_VERSIONS 1 CMAKE_OPENCV_GCC_VERSION_MINOR)
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else()#compiler returned just the major version number
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string(REGEX MATCH "[0-9]+" CMAKE_GCC_REGEX_VERSION "${CMAKE_OPENCV_GCC_VERSION_FULL}")
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if(NOT CMAKE_GCC_REGEX_VERSION)#compiler did not return anything reasonable
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set(CMAKE_GCC_REGEX_VERSION "0")
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message(WARNING "GCC version not detected!")
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endif()
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set(CMAKE_OPENCV_GCC_VERSION_MAJOR ${CMAKE_GCC_REGEX_VERSION})
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set(CMAKE_OPENCV_GCC_VERSION_MINOR 0)
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endif()
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set(CMAKE_OPENCV_GCC_VERSION ${CMAKE_OPENCV_GCC_VERSION_MAJOR}${CMAKE_OPENCV_GCC_VERSION_MINOR})
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math(EXPR CMAKE_OPENCV_GCC_VERSION_NUM "${CMAKE_OPENCV_GCC_VERSION_MAJOR}*100 + ${CMAKE_OPENCV_GCC_VERSION_MINOR}")
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message(STATUS "Detected version of GNU GCC: ${CMAKE_OPENCV_GCC_VERSION} (${CMAKE_OPENCV_GCC_VERSION_NUM})")
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if(WIN32)
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execute_process(COMMAND ${CMAKE_CXX_COMPILER} -dumpmachine
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OUTPUT_VARIABLE OPENCV_GCC_TARGET_MACHINE
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OUTPUT_STRIP_TRAILING_WHITESPACE)
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if(OPENCV_GCC_TARGET_MACHINE MATCHES "amd64|x86_64|AMD64")
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set(MINGW64 1)
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endif()
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endif()
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endif()
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if(MSVC64 OR MINGW64)
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set(X86_64 1)
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elseif(MINGW OR (MSVC AND NOT CMAKE_CROSSCOMPILING))
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set(X86 1)
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elseif(CMAKE_SYSTEM_PROCESSOR MATCHES "amd64.*|x86_64.*|AMD64.*")
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set(X86_64 1)
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elseif(CMAKE_SYSTEM_PROCESSOR MATCHES "i686.*|i386.*|x86.*|amd64.*|AMD64.*")
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set(X86 1)
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elseif(CMAKE_SYSTEM_PROCESSOR MATCHES "^(arm.*|ARM.*)")
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set(ARM 1)
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elseif(CMAKE_SYSTEM_PROCESSOR MATCHES "^(aarch64.*|AARCH64.*)")
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set(AARCH64 1)
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endif()
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# Workaround for 32-bit operating systems on 64-bit x86_64 processor
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if(X86_64 AND CMAKE_SIZEOF_VOID_P EQUAL 4 AND NOT FORCE_X86_64)
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message(STATUS "sizeof(void) = 4 on x86 / x86_64 processor. Assume 32-bit compilation mode (X86=1)")
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unset(X86_64)
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set(X86 1)
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endif()
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# Similar code exists in OpenCVConfig.cmake
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if(NOT DEFINED OpenCV_STATIC)
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# look for global setting
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if(NOT DEFINED BUILD_SHARED_LIBS OR BUILD_SHARED_LIBS)
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set(OpenCV_STATIC OFF)
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else()
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set(OpenCV_STATIC ON)
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endif()
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endif()
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if(MSVC)
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if(CMAKE_CL_64)
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set(OpenCV_ARCH x64)
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elseif((CMAKE_GENERATOR MATCHES "ARM") OR ("${arch_hint}" STREQUAL "ARM") OR (CMAKE_VS_EFFECTIVE_PLATFORMS MATCHES "ARM|arm"))
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# see Modules/CmakeGenericSystem.cmake
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set(OpenCV_ARCH ARM)
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else()
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set(OpenCV_ARCH x86)
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endif()
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if(MSVC_VERSION EQUAL 1400)
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set(OpenCV_RUNTIME vc8)
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elseif(MSVC_VERSION EQUAL 1500)
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set(OpenCV_RUNTIME vc9)
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elseif(MSVC_VERSION EQUAL 1600)
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set(OpenCV_RUNTIME vc10)
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elseif(MSVC_VERSION EQUAL 1700)
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set(OpenCV_RUNTIME vc11)
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elseif(MSVC_VERSION EQUAL 1800)
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set(OpenCV_RUNTIME vc12)
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elseif(MSVC_VERSION EQUAL 1900)
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set(OpenCV_RUNTIME vc14)
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elseif(MSVC_VERSION EQUAL 1910)
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set(OpenCV_RUNTIME vc15)
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endif()
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elseif(MINGW)
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set(OpenCV_RUNTIME mingw)
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if(MINGW64)
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set(OpenCV_ARCH x64)
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else()
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set(OpenCV_ARCH x86)
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endif()
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endif()
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