configure: Add -Wno-format-security to default CFLAGS

Either due to a change in Ubuntu 13.10 or GCC 4.8 -Wno-format has no
effect if -Wformat-security is enabled (which it is on Ubuntu) so we
also disable the latter by default.

diff --git a/configure.ac b/configure.ac
index 3c1d590..ab90571 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -284,7 +284,7 @@ fi
 # ===========================
 
 if test -z "$CFLAGS"; then
-       CFLAGS="-g -O2 -Wall -Wno-format -Wno-pointer-sign"
+       CFLAGS="-g -O2 -Wall -Wno-format -Wno-format-security -Wno-pointer-sign"
 fi
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