forked from Mirrors/openclonk
38 lines
1.5 KiB
CMake
38 lines
1.5 KiB
CMake
# OpenClonk, http://www.openclonk.org
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#
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# Copyright (c) 2018, The OpenClonk Team and contributors
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#
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# Distributed under the terms of the ISC license; see accompanying file
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# "COPYING" for details.
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#
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# "Clonk" is a registered trademark of Matthes Bender, used with permission.
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# See accompanying file "TRADEMARK" for details.
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#
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# To redistribute this file separately, substitute the full license texts
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# for the above references.
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# GCC6 doesn't work well with CMake while cross-compiling. See bugs:
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# https://gitlab.kitware.com/cmake/cmake/issues/16291
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# https://gitlab.kitware.com/cmake/cmake/issues/16919
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# https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70129
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function(HANDLE_GCC_CROSS_INCLUDE_PATHS _lang _gcc_lang_flag)
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set(_compiler "${CMAKE_${_lang}_COMPILER}")
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set(_compile_flags "${CMAKE_${_lang}_FLAGS}")
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separate_arguments(_compile_flags UNIX_COMMAND "${_compile_flags}")
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execute_process(
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COMMAND ${_compiler} ${_compile_flags} -v -E -x ${_gcc_lang_flag} /dev/null
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OUTPUT_QUIET
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ERROR_VARIABLE _compiler_output
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)
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if ("${_compiler_output}" MATCHES "#include <\\.\\.\\.> search starts here:\n *(.*)\nEnd of search list\\.")
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string(REGEX REPLACE "[\n ]+" " " _search_list "${CMAKE_MATCH_1}")
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separate_arguments(_search_list)
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foreach(_directory ${_search_list})
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get_filename_component(_fixed_component "${_directory}" REALPATH)
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set(_resolved_list ${_resolved_list} "${_fixed_component}")
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endforeach()
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set(CMAKE_${_lang}_IMPLICIT_INCLUDE_DIRECTORIES ${CMAKE_${_lang}_IMPLICIT_INCLUDE_DIRECTORIES} ${_resolved_list} PARENT_SCOPE)
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endif()
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endfunction()
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