expose _mesa_swizzle_string()
diff --git a/src/mesa/shader/prog_print.h b/src/mesa/shader/prog_print.h
index 79c599f..c0101b6 100644
--- a/src/mesa/shader/prog_print.h
+++ b/src/mesa/shader/prog_print.h
@@ -37,6 +37,9 @@
 } gl_prog_print_mode;
 
 
+extern const char *
+_mesa_swizzle_string(GLuint swizzle, GLuint negateBase, GLboolean extended);
+
 extern void
 _mesa_print_instruction(const struct prog_instruction *inst);