diff --git a/build/configure.ac.tools b/build/configure.ac.tools
index 7f1352548..d2b11c839 100644
--- a/build/configure.ac.tools
+++ b/build/configure.ac.tools
@@ -7,6 +7,7 @@ GTK_DOC_CHECK([1.6])
 AC_PROG_CC
 AC_PROG_CPP
 AC_PROG_CXX dnl required for BeOS (and cannot be a conditional dependency)
+AM_PROG_CC_C_O
 AC_LIBTOOL_WIN32_DLL
 AC_PROG_LIBTOOL dnl required version (1.4) DON'T REMOVE!
 AC_C_INLINE