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Such module usages are not relevant for the final build, they are used only to detect the capabilities of the compiler. This generalizes #68453, and would be needed for Apple internal configurations that set `SWIFT_LOADED_MODULE_TRACE_FILE` when building the compiler. Addresses rdar://124954349
22 lines
670 B
CMake
22 lines
670 B
CMake
# Test if the Swift compiler supports -disable-implicit-<module>-module-import
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function(swift_supports_implicit_module module_name out_var)
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file(WRITE "${CMAKE_BINARY_DIR}/tmp/empty-check-${module_name}.swift" "")
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execute_process(
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COMMAND
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"${CMAKE_Swift_COMPILER}"
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-Xfrontend -disable-implicit-${module_name}-module-import
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-Xfrontend -parse-stdlib
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-parse -
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INPUT_FILE
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"${CMAKE_BINARY_DIR}/tmp/empty-check-${module_name}.swift"
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OUTPUT_QUIET ERROR_QUIET
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RESULT_VARIABLE
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result
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)
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if(NOT result)
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set("${out_var}" "TRUE" PARENT_SCOPE)
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else()
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set("${out_var}" "FALSE" PARENT_SCOPE)
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endif()
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endfunction()
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