configure: Add -Wformat -Werror=format-security to default CFLAGS

Matches debian build scripts.

Also expands the condition to gcc or clang. I'd rather remove this,
apparently it exists because some opensolaris compiler didn't have -Wall
which seems absurd to me, but whatever.

1 files changed, 2 insertions, 2 deletions

diff --git a/configure b/configure
index 643e70f1..093fbf3d 100755
--- a/configure
+++ b/configure
@@ -334,9 +334,9 @@ else
 fi
 
 echo "CC=$CC" >> Makefile.settings;
-if echo $CC | grep -qw gcc; then
+if echo $CC | grep -qw 'gcc\|clang'; then
 	# Apparently -Wall is gcc-specific?
-	echo CFLAGS+=-Wall >> Makefile.settings
+	echo CFLAGS+=-Wall -Wformat -Werror=format-security >> Makefile.settings
 fi
 
 if [ -z "$LD" ]; then