<p>oh, i figured it out</p><p>clang -target x86_64-windows-msvc puts the comment into a .drectve section. </p><p>clang -target x86_64-windows-gnu silently ignores it, presumably because mingw doesn't define anywhere to put it. </p><p>clang -target x86_64-linux-gnu puts it into an SHT_LLVM_DEPENDENT_LIBRARIES section because LLVM has defined that this is where it goes</p>