2022-05-06 09:49:46 +00:00
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include_guard(GLOBAL)
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2021-12-08 11:32:04 +00:00
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# https://stackoverflow.com/a/49216539
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#
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# Removes the specified compile flag from the specified target.
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# _target - The target to remove the compile flag from
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# _flag - The compile flag to remove
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#
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# Pre: apply_global_cxx_flags_to_all_targets() must be invoked.
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#
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# cmake-lint: disable=C0103
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macro(myx_cmake_remove_flag_from_target _target _flag)
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get_target_property(_target_cxx_flags ${_target} COMPILE_OPTIONS)
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if(_target_cxx_flags)
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list(REMOVE_ITEM _target_cxx_flags ${_flag})
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set_target_properties(${_target} PROPERTIES COMPILE_OPTIONS "${_target_cxx_flags}")
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endif()
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endmacro()
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#
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# Removes the specified compiler flag from the specified file.
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# _target - The target that _file belongs to
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# _file - The file to remove the compiler flag from
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# _flag - The compiler flag to remove.
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#
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# Pre: apply_global_cxx_flags_to_all_targets() must be invoked.
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#
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# cmake-lint: disable=C0103
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macro(myx_cmake_remove_flag_from_file _target _file _flag)
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get_target_property(_target_sources ${_target} SOURCES)
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# Check if a sync is required, in which case we'll force a rewrite of the cache variables.
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if(_flag_sync_required)
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unset(_cached_${_target}_cxx_flags CACHE)
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unset(_cached_${_target}_${_file}_cxx_flags CACHE)
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endif()
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get_target_property(_${_target}_cxx_flags ${_target} COMPILE_OPTIONS)
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# On first entry, cache the target compile flags and apply them to each source file
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# in the target.
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if(NOT _cached_${_target}_cxx_flags)
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# Obtain and cache the target compiler options, then clear them.
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get_target_property(_target_cxx_flags ${_target} COMPILE_OPTIONS)
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set(_cached_${_target}_cxx_flags "${_target_cxx_flags}" CACHE INTERNAL "")
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set_target_properties(${_target} PROPERTIES COMPILE_OPTIONS "")
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# Apply the target compile flags to each source file.
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foreach(_source_file ${_target_sources})
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# Check for pre-existing flags set by set_source_files_properties().
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get_source_file_property(_source_file_cxx_flags ${_source_file} COMPILE_FLAGS)
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if(_source_file_cxx_flags)
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separate_arguments(_source_file_cxx_flags UNIX_COMMAND ${_source_file_cxx_flags})
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list(APPEND _source_file_cxx_flags "${_target_cxx_flags}")
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else()
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set(_source_file_cxx_flags "${_target_cxx_flags}")
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endif()
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# Apply the compile flags to the current source file.
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string(REPLACE ";" " " _source_file_cxx_flags_string "${_source_file_cxx_flags}")
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set_source_files_properties(${_source_file} PROPERTIES COMPILE_FLAGS "${_source_file_cxx_flags_string}")
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endforeach()
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endif()
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list(FIND _target_sources ${_file} _file_found_at)
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if(_file_found_at GREATER -1)
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if(NOT _cached_${_target}_${_file}_cxx_flags)
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# Cache the compile flags for the specified file.
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# This is the list that we'll be removing flags from.
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get_source_file_property(_source_file_cxx_flags ${_file} COMPILE_FLAGS)
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separate_arguments(_source_file_cxx_flags UNIX_COMMAND ${_source_file_cxx_flags})
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set(_cached_${_target}_${_file}_cxx_flags ${_source_file_cxx_flags} CACHE INTERNAL "")
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endif()
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# Remove the specified flag, then re-apply the rest.
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list(REMOVE_ITEM _cached_${_target}_${_file}_cxx_flags ${_flag})
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string(REPLACE ";" " " _cached_${_target}_${_file}_cxx_flags_string
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"${_cached_${_target}_${_file}_cxx_flags}")
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set_source_files_properties(${_file} PROPERTIES COMPILE_FLAGS
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"${_cached_${_target}_${_file}_cxx_flags_string}")
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endif()
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endmacro()
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