diff --git a/sqlite3.go b/sqlite3.go
index c5c1a0c..2250261 100644
--- a/sqlite3.go
+++ b/sqlite3.go
@@ -8,6 +8,8 @@ package sqlite3
 /*
 #cgo CFLAGS: -std=gnu99
 #cgo CFLAGS: -DSQLITE_HAS_CODEC
+#cgo CFLAGS: -DSQLITE_ENABLE_RTREE -DSQLITE_THREADSAFE
+#cgo CFLAGS: -DSQLITE_ENABLE_FTS3 -DSQLITE_ENABLE_FTS3_PARENTHESIS
 #cgo LDFLAGS: -lcrypto
 #include <sqlite3-binding.h>
 #include <stdlib.h>