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This causes CMake to include their headers with -isystem instead of -I, so the compiler doesn't generate warnings on them. ArchLinux was failing to build because of such warnings. Includes a function from cmake 3.6 to allow this to work on systems like Ubuntu 14.04 that still provide only cmake 3.5.
53 lines
1.7 KiB
CMake
53 lines
1.7 KiB
CMake
#Pinched from FindPkgConfig in CMake 3.6 because we need to do this in
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#CMake 3.5. Delete this file and the corresponding calls in master
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#after merging up.
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# given directories, and create an imported target from them
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function(_pkg_create_imp_target _prefix)
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unset(_libs)
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unset(_find_opts)
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# set the options that are used as long as the .pc file does not provide a library
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# path to look into
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foreach (flag IN LISTS ${_prefix}_LDFLAGS)
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if (flag MATCHES "^-L(.*)")
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# only look into the given paths from now on
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set(_find_opts "HINTS ${${CMAKE_MATCH_1}} NO_DEFAULT_PATH")
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continue()
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endif()
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if (flag MATCHES "^-l(.*)")
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set(_pkg_search "${CMAKE_MATCH_1}")
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else()
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continue()
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endif()
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find_library(pkgcfg_lib_${_prefix}_${_pkg_search}
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NAMES ${_pkg_search}
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${_find_opts})
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list(APPEND _libs "${pkgcfg_lib_${_prefix}_${_pkg_search}}")
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endforeach()
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# only create the target if it is linkable, i.e. no executables
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if (NOT TARGET PkgConfig::${_prefix}
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AND ( ${_prefix}_INCLUDE_DIRS OR _libs OR ${_prefix}_CFLAGS_OTHER ))
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add_library(PkgConfig::${_prefix} INTERFACE IMPORTED)
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unset(_props)
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if(${_prefix}_INCLUDE_DIRS)
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set_property(TARGET PkgConfig::${_prefix} PROPERTY
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INTERFACE_INCLUDE_DIRECTORIES "${${_prefix}_INCLUDE_DIRS}")
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endif()
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if(_libs)
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set_property(TARGET PkgConfig::${_prefix} PROPERTY
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INTERFACE_LINK_LIBRARIES "${_libs}")
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endif()
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if(${_prefix}_CFLAGS_OTHER)
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set_property(TARGET PkgConfig::${_prefix} PROPERTY
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INTERFACE_COMPILE_OPTIONS "${${_prefix}_CFLAGS_OTHER}")
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endif()
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endif()
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endfunction()
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