diff --git a/configure.ac b/configure.ac
index 572222b..f4a4608 100644
--- a/configure.ac
+++ b/configure.ac
@@ -41,5 +41,6 @@ AM_PROG_AS
 AC_PROG_CC
 AC_PROG_CC_C99
 AC_PROG_RANLIB
+AC_C_INLINE
 
 AC_OUTPUT