Add missing config.h header

fix problem of HAVE_TBM is always not defined

Change-Id: If9d816e5be908e3f700a47c116eafead14641e6b

diff --git a/src/backend.c b/src/backend.c
index b55686476898f509221f4576ace439d3c73f1b54..b2b089b741c3cad134e68ecbe2970c411b8882e3 100644 (file)
--- a/src/backend.c
+++ b/src/backend.c
@@ -32,6 +32,7 @@
 #include <limits.h>
 
 #include "backend.h"
+#include "config.h"
 
 #define ARRAY_SIZE(a) (sizeof(a)/sizeof((a)[0]))