From eedfc445a3a3f4a5fb26e167a1eba717a883ea7c Mon Sep 17 00:00:00 2001
From: Russ Cox <rsc@golang.org>
Date: Fri, 18 Mar 2011 18:23:00 -0400
Subject: [PATCH] build: diagnose Ubuntu's buggy copy of gold

R=iant, dsymonds
CC=golang-dev
https://golang.org/cl/4300041
---
 src/make.bash | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/src/make.bash b/src/make.bash
index d9ca40d427..79e368cb50 100755
--- a/src/make.bash
+++ b/src/make.bash
@@ -10,6 +10,17 @@ if [ ! -f env.bash ]; then
 fi
 . ./env.bash
 
+if ld --version 2>&1 | grep 'gold.*2\.20' >/dev/null; then
+	echo 'ERROR: Your system has gold 2.20 installed.'
+	echo 'This version is shipped by Ubuntu even though'
+	echo 'it is known not to work on Ubuntu.'
+	echo 'Binaries built with this linker are likely to fail in mysterious ways.'
+	echo
+	echo 'Run sudo apt-get remove binutils-gold.'
+	echo
+	exit 1
+fi
+
 # Create target directories
 if [ "$GOBIN" = "$GOROOT/bin" ]; then
 	mkdir -p "$GOROOT/bin"