Update configure to use C99 mode.

diff --git a/configure.ac b/configure.ac
index b3bd60caffb67aa956562f30f00819a686c3f92b..db3ff63e5a68c80dada447ad57b2273888b68f91 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -5,7 +5,7 @@ AC_CONFIG_HEADER([config.h])
 
 AM_INIT_AUTOMAKE([-Wall -Werror foreign])
 
-AC_PROG_CC
+AC_PROG_CC_C99
 AC_C_BIGENDIAN
 
 AC_PROG_LIBTOOL