1 files changed, 54 insertions, 0 deletions
diff --git a/pgo.sh.in b/pgo.sh.in
new file mode 100644
index 000000000000..496043b295a6
--- /dev/null
+++ b/pgo.sh.in
@@ -0,0 +1,54 @@
+#!/usr/bin/bash
+#
+#   pgo.sh - Compile with, or utilize profile guided optimization
+#
+#   Copyright (c) 2008-2016 Pacman Development Team <pacman-dev@archlinux.org>
+#
+#   This program is free software; you can redistribute it and/or modify
+#   it under the terms of the GNU General Public License as published by
+#   the Free Software Foundation; either version 2 of the License, or
+#   (at your option) any later version.
+#
+#   This program is distributed in the hope that it will be useful,
+#   but WITHOUT ANY WARRANTY; without even the implied warranty of
+#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#   GNU General Public License for more details.
+#
+#   You should have received a copy of the GNU General Public License
+#   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+
+[[ -n "$LIBMAKEPKG_PGO_SH" ]] && return
+LIBMAKEPKG_PGO_SH=1
+
+LIBRARY=${LIBRARY:-'@libmakepkgdir@'}
+
+source "$LIBRARY/util/message.sh"
+source "$LIBRARY/util/option.sh"
+
+extra_buildopts+=('pgo')
+
+[[ -n ${PROFDEST} ]] && _PROFDEST=$(canonicalize_path ${PROFDEST})
+PROFDEST=${_PROFDEST:-$PROFDEST}
+PROFDEST=${PROFDEST:-$startdir} #default to $startdir if undefined
+if [[ ! -w $PROFDEST ]] ; then
+	error "$(gettext "You do not have write permission to store profiles in %s.")" "$PROFDEST"
+	plain "$(gettext "Aborting...")"
+	exit 1
+fi
+
+pgo() {
+	[[ "$INFAKEROOT" == 1 ]] && return
+	if check_buildoption "pgo" "y"; then
+		if [ ! -d "$PROFDEST/$pkgbase.gen" ]; then
+			mkdir "$PROFDEST/$pkgbase.gen"
+			CFLAGS+=" -fprofile-generate -fprofile-dir=$PROFDEST/$pkgbase.gen"
+			CXXFLAGS+=" -fprofile-generate -fprofile-dir=$PROFDEST/$pkgbase.gen"
+			LDFLAGS+=" -lgcov"
+		else
+			[[ ! -d "$PROFDEST/$pkgbase.used" ]] && mv "$PROFDEST/$pkgbase.gen" "$PROFDEST/$pkgbase.used"
+			CFLAGS+=" -fprofile-correction -fprofile-use -fprofile-dir=$PROFDEST/$pkgbase.used"
+			CXXFLAGS+=" -fprofile-correction -fprofile-use -fprofile-dir=$PROFDEST/$pkgbase.used"
+		fi
+	fi
+}