diff --git a/configure.in b/configure.in
index 84989a4a7f..8bb334f179 100644
--- a/configure.in
+++ b/configure.in
@@ -306,6 +306,7 @@ AM_SANITY_CHECK
 
 # Checks for programs.
 AC_ISC_POSIX
+AM_PROG_CC_C_O
 AM_PROG_CC_STDC
 AC_PROG_INSTALL
 AC_PROG_MAKE_SET