diff --git a/configure.in b/configure.in
index b535eebc2..f10af3591 100644
--- a/configure.in
+++ b/configure.in
@@ -11,6 +11,7 @@ AM_CONFIG_HEADER(config.h)
 AC_C_BIGENDIAN
 AC_PROG_CC
 AM_PROG_CC_STDC
+AM_PROG_CC_C_O
 AC_HEADER_STDC
 AC_C_CONST
 AM_ENABLE_SHARED