Just to add to this, even for the special-compile-flags case, you shouldn't need to go the manual-make road; you can easily customize packages with the ABS (htt

Just to add to this, even for the special-compile-flags case, you shouldn't need to go the manual-make road; you can easily customize packages with the ABS (https://wiki.archlinux.org/index.php/ABS https://wiki.archlinux.org/index.php/ABS) and use them like AUR package (I used a customized gtk3 for a while using this method, and it worked wonderfully).