[build] Improve portability by invoking gcc with -std=gnu99 instead of -std=c99
2007-04-30 Andrew J. Schorr <ajschorr@alumni.princeton.edu>
* configure.ac: Change gcc CFLAGS from '-std=c99' to '-std=gnu99'
to improve portability.
diff --git a/configure.ac b/configure.ac
index 5421c76..b24ab91 100755
--- a/configure.ac
+++ b/configure.ac
@@ -119,7 +119,7 @@
AC_MSG_RESULT([Intel default])
;;
"GCC")
- CFLAGS="-Os -fno-omit-frame-pointer -g -std=c99 -Wall"
+ CFLAGS="-Os -fno-omit-frame-pointer -g -std=gnu99 -Wall"
CFLAGS="${CFLAGS} -Wsign-compare -Wpointer-arith"
CFLAGS="${CFLAGS} -Wbad-function-cast -Wwrite-strings"
CFLAGS="${CFLAGS} -Wmissing-prototypes -Wmissing-declarations"