After the MacOS 15.4 update, my C++ code, which used to compile perfectly fine on my Homebrew gcc install, stopped working. After a bit of internet search, it seemed like Apple did something weird with their Clang and that is somehow screwing with how gcc searches for header files. Based on a comment I cannot find longer, it seemed that reinstalling gcc should fix the issue, but the following error still lingers at the moment:
/opt/homebrew/Cellar/gcc/14.2.0_1/lib/gcc/current/gcc/aarch64-apple-darwin24/14/include-fixed/_stdio.h:90:10: fatal error: _printf.h: No such file or directory
90 | #include <_printf.h>
I'm not sure how to continue from here. Could I please receive some guidance? Thanks!
The correct solution seems to be to install gcc again. brew reinstall gcc somehow does not do the trick, but brew uninstall gcc, followed by brew install gcc does. I assume this runs the mkheader script mentioned in the comment by this user as well.