light: use $CC and honor $CFLAGS

Signed-off-by: Jürgen Buchmüller <pullmoll@t-online.de>

srcpkgs/light/template

@@ -1,7 +1,7 @@
 # Template file for 'light'
 pkgname=light
 version=1.1.2
-revision=1
+revision=2
 build_style=gnu-makefile
 make_use_env=1
 make_build_target=man
@@ -14,7 +14,9 @@ distfiles="https://github.com/haikarainen/light/archive/${version}.tar.gz"
 checksum=291ef234929adb20fe96359724c5ccad36cf396dd110f7001654c21e17800032
 
 pre_build() {
-	sed -i 's|^CC.*||g' Makefile
+	sed -i Makefile \
+		-e "s;^\(CC\)=.*;\1=${CC};" \
+		-e "s;^\(CFLAGS\)=\(.*\);\1=\2 ${CFLAGS};"
 }
 
 do_install() {