On Thu, Aug 07, 2025 at 05:31:11PM -0700, Jeremy Drake via Cygwin wrote: > On a case-insensitive but case-preserving filesystem, is there a Cygwin > API to get the on-disk case for a given path? It seems like `realpath` > ought to do it but running > $ touch case-test > $ realpath CASE-TEST > returns CASE-TEST. Regardless, canonicalize_file_name or realpath may not > be what I want because it would dereference symlinks. > > Background: I'm trying to debug some test failures in Clang, due to a > warning that's supposed to be issued when you #include "foo.h" but the > file on disk that it opened is "Foo.h".
Not directly answering your initial question, but I have found the -H compiler flag useful for troubleshooting from where files are included: If you change the compiler command line from gcc/clang "... -o foo.o" to "-H", then the compiler outputs a list of header files paths as they are included by the preprocessor. Cheers, Glenn -- Problem reports: https://cygwin.com/problems.html FAQ: https://cygwin.com/faq/ Documentation: https://cygwin.com/docs.html Unsubscribe info: https://cygwin.com/ml/#unsubscribe-simple
