540815eec2
Starting with Xcode 8 the SDK folder also contains an unversioned entry: $ ls -l /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs drwxr-xr-x 5 root wheel 170 Mar 4 2018 MacOSX.sdk lrwxr-xr-x 1 root wheel 10 Sep 16 20:49 MacOSX10.12.sdk -> MacOSX.sdk If this unversioned path is used CMake cannot detect the SDK version. To work around the problem we always invoke the code path that translates short SDK names like "macosx10.12" into a path. That way we always end up with a versioned SDK path in _CMAKE_OSX_SYSROOT_PATH which is later used to determine the version. Closes: #16323
148 lines
5.8 KiB
CMake
148 lines
5.8 KiB
CMake
# Ask xcode-select where to find /Developer or fall back to ancient location.
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execute_process(COMMAND xcode-select -print-path
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OUTPUT_VARIABLE _stdout
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OUTPUT_STRIP_TRAILING_WHITESPACE
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ERROR_VARIABLE _stderr
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RESULT_VARIABLE _failed)
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if(NOT _failed AND IS_DIRECTORY ${_stdout})
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set(OSX_DEVELOPER_ROOT ${_stdout})
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elseif(IS_DIRECTORY "/Developer")
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set(OSX_DEVELOPER_ROOT "/Developer")
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else()
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set(OSX_DEVELOPER_ROOT "")
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endif()
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execute_process(COMMAND sw_vers -productVersion
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OUTPUT_VARIABLE CURRENT_OSX_VERSION
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OUTPUT_STRIP_TRAILING_WHITESPACE)
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# Save CMAKE_OSX_ARCHITECTURES from the environment.
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set(CMAKE_OSX_ARCHITECTURES "$ENV{CMAKE_OSX_ARCHITECTURES}" CACHE STRING
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"Build architectures for OSX")
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#----------------------------------------------------------------------------
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# _CURRENT_OSX_VERSION - as a two-component string: 10.5, 10.6, ...
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#
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string(REGEX REPLACE "^([0-9]+\\.[0-9]+).*$" "\\1"
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_CURRENT_OSX_VERSION "${CURRENT_OSX_VERSION}")
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#----------------------------------------------------------------------------
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# CMAKE_OSX_DEPLOYMENT_TARGET
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# Set cache variable - end user may change this during ccmake or cmake-gui configure.
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if(_CURRENT_OSX_VERSION VERSION_GREATER 10.3)
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set(CMAKE_OSX_DEPLOYMENT_TARGET "$ENV{MACOSX_DEPLOYMENT_TARGET}" CACHE STRING
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"Minimum OS X version to target for deployment (at runtime); newer APIs weak linked. Set to empty string for default value.")
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endif()
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#----------------------------------------------------------------------------
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# CMAKE_OSX_SYSROOT
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if(CMAKE_OSX_SYSROOT)
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# Use the existing value without further computation to choose a default.
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set(_CMAKE_OSX_SYSROOT_DEFAULT "${CMAKE_OSX_SYSROOT}")
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elseif(NOT "x$ENV{SDKROOT}" STREQUAL "x" AND
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(NOT "x$ENV{SDKROOT}" MATCHES "/" OR IS_DIRECTORY "$ENV{SDKROOT}"))
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# Use the value of SDKROOT from the environment.
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set(_CMAKE_OSX_SYSROOT_DEFAULT "$ENV{SDKROOT}")
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elseif("${CMAKE_GENERATOR}" MATCHES Xcode
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OR CMAKE_OSX_DEPLOYMENT_TARGET
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OR CMAKE_OSX_ARCHITECTURES MATCHES "[^;]"
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OR NOT EXISTS "/usr/include/sys/types.h")
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# Find installed SDKs in either Xcode-4.3+ or pre-4.3 SDKs directory.
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set(_CMAKE_OSX_SDKS_DIR "")
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if(OSX_DEVELOPER_ROOT)
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foreach(d Platforms/MacOSX.platform/Developer/SDKs SDKs)
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file(GLOB _CMAKE_OSX_SDKS ${OSX_DEVELOPER_ROOT}/${d}/*)
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if(_CMAKE_OSX_SDKS)
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set(_CMAKE_OSX_SDKS_DIR ${OSX_DEVELOPER_ROOT}/${d})
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break()
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endif()
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endforeach()
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endif()
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if(_CMAKE_OSX_SDKS_DIR)
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# Select SDK for current OSX version accounting for the known
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# specially named SDKs.
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set(_CMAKE_OSX_SDKS_VER_SUFFIX_10.4 "u")
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set(_CMAKE_OSX_SDKS_VER_SUFFIX_10.3 ".9")
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# find the latest SDK
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set(_CMAKE_OSX_LATEST_SDK_VERSION "0.0")
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file(GLOB _CMAKE_OSX_SDKS RELATIVE "${_CMAKE_OSX_SDKS_DIR}" "${_CMAKE_OSX_SDKS_DIR}/MacOSX*.sdk")
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foreach(_SDK ${_CMAKE_OSX_SDKS})
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if(_SDK MATCHES "MacOSX([0-9]+\\.[0-9]+)[^/]*\\.sdk" AND CMAKE_MATCH_1 VERSION_GREATER ${_CMAKE_OSX_LATEST_SDK_VERSION})
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set(_CMAKE_OSX_LATEST_SDK_VERSION "${CMAKE_MATCH_1}")
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endif()
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endforeach()
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# pick an SDK that works
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set(_CMAKE_OSX_SYSROOT_DEFAULT)
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foreach(ver ${CMAKE_OSX_DEPLOYMENT_TARGET}
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${_CURRENT_OSX_VERSION}
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${_CMAKE_OSX_LATEST_SDK_VERSION})
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set(_CMAKE_OSX_DEPLOYMENT_TARGET ${ver})
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set(_CMAKE_OSX_SDKS_VER ${_CMAKE_OSX_DEPLOYMENT_TARGET}${_CMAKE_OSX_SDKS_VER_SUFFIX_${_CMAKE_OSX_DEPLOYMENT_TARGET}})
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set(_CMAKE_OSX_SYSROOT_CHECK "${_CMAKE_OSX_SDKS_DIR}/MacOSX${_CMAKE_OSX_SDKS_VER}.sdk")
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if(IS_DIRECTORY "${_CMAKE_OSX_SYSROOT_CHECK}")
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set(_CMAKE_OSX_SYSROOT_DEFAULT "${_CMAKE_OSX_SYSROOT_CHECK}")
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break()
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endif()
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endforeach()
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if(NOT CMAKE_OSX_DEPLOYMENT_TARGET AND _CURRENT_OSX_VERSION VERSION_LESS _CMAKE_OSX_DEPLOYMENT_TARGET)
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set(CMAKE_OSX_DEPLOYMENT_TARGET ${_CURRENT_OSX_VERSION} CACHE STRING
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"Minimum OS X version to target for deployment (at runtime); newer APIs weak linked. Set to empty string for default value." FORCE)
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endif()
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else()
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# Assume developer files are in root (such as Xcode 4.5 command-line tools).
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set(_CMAKE_OSX_SYSROOT_DEFAULT "")
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endif()
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endif()
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# Set cache variable - end user may change this during ccmake or cmake-gui configure.
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# Choose the type based on the current value.
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set(_CMAKE_OSX_SYSROOT_TYPE STRING)
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foreach(v CMAKE_OSX_SYSROOT _CMAKE_OSX_SYSROOT_DEFAULT)
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if("x${${v}}" MATCHES "/")
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set(_CMAKE_OSX_SYSROOT_TYPE PATH)
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break()
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endif()
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endforeach()
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set(CMAKE_OSX_SYSROOT "${_CMAKE_OSX_SYSROOT_DEFAULT}" CACHE ${_CMAKE_OSX_SYSROOT_TYPE}
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"The product will be built against the headers and libraries located inside the indicated SDK.")
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# Transform the cached value to something we can use.
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set(_CMAKE_OSX_SYSROOT_ORIG "${CMAKE_OSX_SYSROOT}")
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set(_CMAKE_OSX_SYSROOT_PATH "")
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if(CMAKE_OSX_SYSROOT)
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if("x${CMAKE_OSX_SYSROOT}" MATCHES "/")
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# This is a path to the SDK. Make sure it exists.
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if(NOT IS_DIRECTORY "${CMAKE_OSX_SYSROOT}")
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message(WARNING "Ignoring CMAKE_OSX_SYSROOT value:\n ${CMAKE_OSX_SYSROOT}\n"
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"because the directory does not exist.")
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set(CMAKE_OSX_SYSROOT "")
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set(_CMAKE_OSX_SYSROOT_ORIG "")
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endif()
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set(_CMAKE_OSX_SYSROOT_PATH "${CMAKE_OSX_SYSROOT}")
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endif()
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if(CMAKE_OSX_SYSROOT)
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# Transform the (maybe unversioned) sysroot into a versioned path.
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execute_process(
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COMMAND xcodebuild -sdk ${CMAKE_OSX_SYSROOT} -version Path
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OUTPUT_VARIABLE _stdout
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OUTPUT_STRIP_TRAILING_WHITESPACE
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ERROR_VARIABLE _stderr
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RESULT_VARIABLE _failed
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)
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if(NOT _failed AND IS_DIRECTORY "${_stdout}")
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set(_CMAKE_OSX_SYSROOT_PATH "${_stdout}")
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# For non-Xcode generators use the path.
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if(NOT "${CMAKE_GENERATOR}" MATCHES "Xcode")
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set(CMAKE_OSX_SYSROOT "${_CMAKE_OSX_SYSROOT_PATH}")
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endif()
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endif()
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endif()
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endif()
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