travis-ci: record and skip successfully built trees

diff --git a/xdiff-interface.c b/xdiff-interface.c
index d3f78ca2a718d3e4928aa90067e24d19988514c1..018e03308921e3b44bb75b8bc1e005424ca4fc1b 100644 (file)
--- a/xdiff-interface.c
+++ b/xdiff-interface.c
@@ -1,4 +1,5 @@
 #include "cache.h"
+#include "config.h"
 #include "xdiff-interface.h"
 #include "xdiff/xtypes.h"
 #include "xdiff/xdiffi.h"