From 7a11908195a6d6bacd13dd49d6f15f18e85ef911 Mon Sep 17 00:00:00 2001
From: Reid Spencer
GCC 4.1.1: GCC fails to build LLVM with template concept check errors compiling some files. At the time of this writing, GCC mainline (4.2) did not share the problem.
+GNU ld 2.16.X. Some 2.16.X versions of the ld linker will produce very +long warning messages complaining that some ".gnu.linkonce.t.*" symbol was +defined in a discarded section. You can safely ignore these messages as they are +erroneous and the linkage is correct. These messages disappear using ld +2.17.