libmakepkg: Add check_buildoption for distcc and ccache

makepkg used to check OPTIONS too, which could override
BUILDENV. Implement a new function that handles these
options more like OPTIONS.

This also reduces code duplication a bit.

Signed-off-by: Jan Alexander Steffens (heftig) <jan.steffens@gmail.com>
Signed-off-by: Allan McRae <allan@archlinux.org>

1 files changed, 34 insertions, 0 deletions

diff --git a/scripts/libmakepkg/util/option.sh b/scripts/libmakepkg/util/option.sh
index 1b2d94dc..41c7fd3a 100644
--- a/scripts/libmakepkg/util/option.sh
+++ b/scripts/libmakepkg/util/option.sh
@@ -106,3 +106,37 @@ check_buildenv() {
 	# not found
 	return 127
 }
+
+##
+# Checks to see if options are present in BUILDENV or PKGBUILD;
+# PKGBUILD options always take precedence.
+#
+#  usage : check_buildoption( $option, $expected_val )
+# return : 0   - matches expected
+#          1   - does not match expected
+#          127 - not found
+##
+check_buildoption() {
+	in_opt_array "$1" ${options[@]}
+	case $? in
+		0) # assert enabled
+			[[ $2 = y ]]
+			return ;;
+		1) # assert disabled
+			[[ $2 = n ]]
+			return
+	esac
+
+	in_opt_array "$1" ${BUILDENV[@]}
+	case $? in
+		0) # assert enabled
+			[[ $2 = y ]]
+			return ;;
+		1) # assert disabled
+			[[ $2 = n ]]
+			return
+	esac
+
+	# not found
+	return 127
+}