64 lines
2.2 KiB
CMake
64 lines
2.2 KiB
CMake
# Add a file to be compiled.
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#
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# add_files([file1 ...] CONDITION condition [condition ...])
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#
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# CONDITION is a complete statement that can be evaluated with if().
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# If it evaluates true, the source files will be added; otherwise not.
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# For example: ADD_IF SDL_FOUND AND Allegro_FOUND
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#
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function(add_files)
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cmake_parse_arguments(PARAM "" "" "CONDITION" ${ARGN})
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set(PARAM_FILES "${PARAM_UNPARSED_ARGUMENTS}")
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if(PARAM_CONDITION)
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if(NOT (${PARAM_CONDITION}))
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return()
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endif()
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endif()
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foreach(FILE IN LISTS PARAM_FILES)
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target_sources(openttd PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/${FILE})
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endforeach()
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endfunction()
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# This function works around an 'issue' with CMake, where
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# set_source_files_properties() only works in the scope of the file. We want
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# to set properties for the source file on a more global level. To solve this,
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# this function records the flags you want, and a macro adds them in the root
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# CMakeLists.txt.
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# See this URL for more information on the issue:
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# http://cmake.3232098.n2.nabble.com/scope-of-set-source-files-properties-td4766111.html
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#
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# set_compile_flags([file1 ...] COMPILE_FLAGS cflag [cflag ...])
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#
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function(set_compile_flags)
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cmake_parse_arguments(PARAM "" "" "COMPILE_FLAGS" ${ARGN})
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set(PARAM_FILES "${PARAM_UNPARSED_ARGUMENTS}")
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get_property(SOURCE_PROPERTIES GLOBAL PROPERTY source_properties)
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foreach(FILE IN LISTS PARAM_FILES)
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list(APPEND SOURCE_PROPERTIES "${CMAKE_CURRENT_SOURCE_DIR}/${FILE}::${PARAM_COMPILE_FLAGS}")
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endforeach()
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set_property(GLOBAL PROPERTY source_properties "${SOURCE_PROPERTIES}")
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endfunction()
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# Call this macro in the same CMakeLists.txt and after add_executable().
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# This makes sure all the COMPILE_FLAGS of set_compile_flags() are set
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# correctly.
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#
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# process_compile_flags()
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#
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function(process_compile_flags)
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get_property(SOURCE_PROPERTIES GLOBAL PROPERTY source_properties)
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foreach(ENTRY ${SOURCE_PROPERTIES})
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string(REPLACE "::" ";" ENTRY "${ENTRY}")
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list(GET ENTRY 0 FILE)
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list(GET ENTRY 1 PROPERTIES)
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set_source_files_properties(${FILE} PROPERTIES COMPILE_FLAGS ${PROPERTIES})
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endforeach()
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endfunction()
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