Apple-GNU.cmake 2.31 KB
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# Distributed under the OSI-approved BSD 3-Clause License.  See accompanying
# file Copyright.txt or https://cmake.org/licensing for details.
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# This module is shared by multiple languages; use include blocker.
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if(__APPLE_COMPILER_GNU)
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  return()
endif()
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set(__APPLE_COMPILER_GNU 1)
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macro(__apple_compiler_gnu lang)
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  set(CMAKE_${lang}_VERBOSE_FLAG "-v -Wl,-v") # also tell linker to print verbose output
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  # GNU does not have -shared on OS X
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  set(CMAKE_SHARED_LIBRARY_CREATE_${lang}_FLAGS "-dynamiclib -Wl,-headerpad_max_install_names")
  set(CMAKE_SHARED_MODULE_CREATE_${lang}_FLAGS "-bundle -Wl,-headerpad_max_install_names")
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  if(NOT CMAKE_${lang}_COMPILER_VERSION VERSION_LESS 4.3)
    set(CMAKE_${lang}_SYSTEM_FRAMEWORK_SEARCH_FLAG "-iframework ")
  endif()
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endmacro()

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macro(cmake_gnu_set_sysroot_flag lang)
  if(NOT DEFINED CMAKE_${lang}_SYSROOT_FLAG)
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    set(_doc "${lang} compiler has -isysroot")
    message(STATUS "Checking whether ${_doc}")
    execute_process(
      COMMAND ${CMAKE_${lang}_COMPILER} "-v" "--help"
      OUTPUT_VARIABLE _gcc_help
      ERROR_VARIABLE _gcc_help
      )
    if("${_gcc_help}" MATCHES "isysroot")
      message(STATUS "Checking whether ${_doc} - yes")
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      set(CMAKE_${lang}_SYSROOT_FLAG "-isysroot")
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    else()
      message(STATUS "Checking whether ${_doc} - no")
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      set(CMAKE_${lang}_SYSROOT_FLAG "")
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    endif()
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    set(CMAKE_${lang}_SYSROOT_FLAG_CODE "set(CMAKE_${lang}_SYSROOT_FLAG \"${CMAKE_${lang}_SYSROOT_FLAG}\")")
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  endif()
endmacro()
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macro(cmake_gnu_set_osx_deployment_target_flag lang)
  if(NOT DEFINED CMAKE_${lang}_OSX_DEPLOYMENT_TARGET_FLAG)
    set(_doc "${lang} compiler supports OSX deployment target flag")
    message(STATUS "Checking whether ${_doc}")
    execute_process(
      COMMAND ${CMAKE_${lang}_COMPILER} "-v" "--help"
      OUTPUT_VARIABLE _gcc_help
      ERROR_VARIABLE _gcc_help
      )
    if("${_gcc_help}" MATCHES "macosx-version-min")
      message(STATUS "Checking whether ${_doc} - yes")
      set(CMAKE_${lang}_OSX_DEPLOYMENT_TARGET_FLAG "-mmacosx-version-min=")
    else()
      message(STATUS "Checking whether ${_doc} - no")
      set(CMAKE_${lang}_OSX_DEPLOYMENT_TARGET_FLAG "")
    endif()
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    set(CMAKE_${lang}_OSX_DEPLOYMENT_TARGET_FLAG_CODE "set(CMAKE_${lang}_OSX_DEPLOYMENT_TARGET_FLAG \"${CMAKE_${lang}_OSX_DEPLOYMENT_TARGET_FLAG}\")")
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  endif()
endmacro()