Add the 'lto' option to enable building with link time optimization
by adding '-flto' to both CFLAGS and CXXFLAGS. The 'lto' option can
be specificed both in the PKGBUILD or by setting the default in
makepkg.conf.
Signed-off-by: Allan McRae <allan@archlinux.org>
This opens the door for third parties to provide libmakepkg
extentions for the purpose of altering the build environment.
Signed-off-by: Que Quotion <quequotion@gmail.com>
Signed-off-by: Allan McRae <allan@archlinux.org>
