_Originally posted by @RichBarton-Arm in https://github.com/flang-compiler/classic-flang-llvm-project/pull/106#discussion_r864053124 :_ > Weird also how this block needs to be in the Clang driver and can't just be in ClassicFlang.cpp The block in question is https://github.com/flang-compiler/classic-flang-llvm-project/blob/release_13x/clang/lib/Driver/ToolChains/Clang.cpp#L4754-L4806.