glsl2: Give the path within src/mesa/ for headers instead of relying on -I.
diff --git a/src/glsl/link_functions.cpp b/src/glsl/link_functions.cpp
index 327be73..fdf886f 100644
--- a/src/glsl/link_functions.cpp
+++ b/src/glsl/link_functions.cpp
@@ -34,7 +34,7 @@
 #include "glsl_parser_extras.h"
 #include "ir.h"
 #include "program.h"
-#include "hash_table.h"
+#include "program/hash_table.h"
 #include "linker.h"
 
 static ir_function_signature *