https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79771
--- Comment #6 from Yaakov Selkowitz <yselkowi at redhat dot com> --- (In reply to Jakub Jelinek from comment #5) > Do you really need even the zlib.def change? For standalone zlib, yes; if you try to export a symbol which doesn't exist, ld errors out. > That part has been added 5 years ago, so it would surprise me if it didn't > build even with that. For standalone zlib, no, we've just been patching it out all this time. Note that my patch was for the standalone zlib. OTOH, in-tree zlib should be built static-only, so zlib.def isn't used either way. > If that works, the gzguts.h and zlib.h changes is something we can apply to > gcc's copy until it is resolved upstream. Ultimately, IMHO we should be encouraging --with-system-zlib on Cygwin (like most other *NIX), but by all means, feel free to take the patch.
