Add link time optimization support to makepkg

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>

1 files changed, 1 insertions, 0 deletions

diff --git a/scripts/libmakepkg/buildenv/meson.build b/scripts/libmakepkg/buildenv/meson.build
index 34d4ba7b..b72d91c0 100644
--- a/scripts/libmakepkg/buildenv/meson.build
+++ b/scripts/libmakepkg/buildenv/meson.build
@@ -4,6 +4,7 @@ sources = [
   'buildflags.sh.in',
   'compiler.sh.in',
   'debugflags.sh.in',
+  'lto.sh.in',
   'makeflags.sh.in',
 ]