diff --git a/libselinux/src/exception.sh b/libselinux/src/exception.sh
old mode 100644
new mode 100755
index b2a37994..c3e61a58
--- a/libselinux/src/exception.sh
+++ b/libselinux/src/exception.sh
@@ -15,7 +15,6 @@ echo "
 ;;
 esac
 }
-echo '#include "../include/selinux/selinux.h"' > temp.c
-gcc -c temp.c -aux-info temp.aux 
-for i in `awk '/..\/include\/selinux\/selinux.h.*extern int/ { print $6 }' temp.aux`; do except $i ; done 
-rm -f temp.c temp.aux temp.o
+gcc -x c -c - -aux-info temp.aux < ../include/selinux/selinux.h
+for i in `awk '/<stdin>.*extern int/ { print $6 }' temp.aux`; do except $i ; done 
+rm -f -- temp.aux -.o