| # WEBKIT_ADD_SWIFT_PREWARM(<consumer> <swift-source>) |
| # <consumer> Target that contains .swift files with expensive imports. |
| # <swift-source> .swift file that imports the consumer's expensive Swift imports. |
| # |
| # Warms the implicit Clang module cache, so the consumer's swiftc finds them |
| # already built instead of compiling them serially. |
| function(WEBKIT_ADD_SWIFT_PREWARM _consumer _swift_source) |
| cmake_path(GET _swift_source STEM _prewarm) |
| |
| add_library(${_prewarm} OBJECT "${_swift_source}") |
| |
| get_target_property(_opts ${_consumer} COMPILE_OPTIONS) |
| list(FILTER _opts EXCLUDE REGEX "(-emit-clang-header-path|-import-underlying-module)") |
| target_compile_options(${_prewarm} PRIVATE ${_opts}) |
| |
| get_target_property(_consumer_bindir ${_consumer} BINARY_DIR) |
| set_property(SOURCE "${_swift_source}" APPEND PROPERTY OBJECT_DEPENDS |
| "${_consumer_bindir}/${_consumer}.platform-swift-args.resp") |
| |
| add_dependencies(${_consumer} ${_prewarm}) |
| endfunction() |
