more build system fixups

[chaz/openbox] / configure.ac

diff --git a/configure.ac b/configure.ac
index a9281dc36f399adf902e438af47570a91512817a..0692209d3f826f089eb5e03a962cd3e7ed2b9bcc 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -16,6 +16,8 @@ OB_COMPILER_FLAGS
 AC_C_CONST
 AC_C_INLINE
 
+AC_PROG_MAKE_SET
+
 if test "$CVS" = "yes"; then
     AC_PATH_PROG([FLEX], [flex])
     test "$FLEX" || AC_MSG_ERROR([flex not found])