force gnu99

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
---
 configure.in |    1 +
 1 file changed, 1 insertion(+)

Index: b/configure.in
===================================================================
--- a/configure.in
+++ b/configure.in
@@ -28,6 +28,7 @@ AC_DISABLE_SHARED
 AC_PROG_LIBTOOL
 AC_SUBST(LIBTOOL_DEPS)
 
+CFLAGS="$CFLAGS -std=gnu99"
 
 dnl configure checks required for Jim files (these are obsolete w/ C99)
 AC_C_CONST