Request a C99 compatible compiler

diff --git a/configure.ac b/configure.ac
index 98dbe5d5e335f206d7bacdf69393ba4e6e156304..d5e5d68fb0a0feded4d5dcd892c336a550c41eae 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -123,6 +123,7 @@ BABL_VARIADIC_MACROS
 
 # Check for programs
 AC_PROG_CC
+AC_PROG_CC_C99
 
 # Initialize libtool
 LT_PREREQ([2.2])