diff --git a/configure.in b/configure.in
index 73809f65..f540671a 100644
--- a/configure.in
+++ b/configure.in
@@ -29,6 +29,8 @@ gl_EARLY
 AC_PROG_GCC_TRADITIONAL
 AC_PROG_LIBTOOL
 
+AM_PROG_CC_C_O
+
 AC_FUNC_ERROR_AT_LINE
 
 ifdef([AC_FUNC_STRTOD],[AC_FUNC_STRTOD],[AM_FUNC_STRTOD])