background:
http://www.airs.com/blog/archives/189

--- binutils/ld/ldmain.c
+++ binutils/ld/ldmain.c
@@ -293,2 +293,3 @@ main (int argc, char **argv)
   link_info.combreloc = TRUE;
+  link_info.relro = TRUE;
   link_info.strip_discarded = TRUE;