[5.9][cxx-interop] make -emit-clang-header-path a driver flag #1373
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hyp changed the title | @swift-ci please test |
DougGregor approved these changes Jun 8, 2023
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The -emit-clang-header-path flag is only a frontend option. Make it a driver option, so we can advise CMake / other build systems to emit a header using a Swift invocation, and not a Swift frontend invocation.