Linux: change install-build-deps.sh to install gold linker from binutils 2.21...

build/install-build-deps.sh

Index: build/install-build-deps.sh
===================================================================
--- build/install-build-deps.sh	(revision 75475)
+++ build/install-build-deps.sh	(working copy)
@@ -46,9 +46,9 @@
     return
   fi
 
-  BINUTILS=binutils-2.20.1
+  BINUTILS=binutils-2.21
   BINUTILS_URL=http://ftp.gnu.org/gnu/binutils/$BINUTILS.tar.bz2
-  BINUTILS_SHA1=fd2ba806e6f3a55cee453cb25c86991b26a75dee
+  BINUTILS_SHA1=ef93235588eb443e4c4a77f229a8d131bccaecc6
 
   test -f $BINUTILS.tar.bz2 || wget $BINUTILS_URL
   if test "`sha1sum $BINUTILS.tar.bz2|cut -d' ' -f1`" != "$BINUTILS_SHA1"
@@ -240,11 +240,11 @@
 # Some operating systems already ship gold (on recent Debian and
 # Ubuntu you can do "apt-get install binutils-gold" to get it), but
 # older releases didn't.  Additionally, gold 2.20 (included in Ubuntu
-# Lucid) makes binaries that just segfault.
+# Lucid) makes binaries that just segfault, and 2.20.1 does not support
+# --map-whole-files.
 # So install from source if we don't have a good version.
 
 case `ld --version` in
-*gold*2.20.1*) ;;
 *gold*2.2[1-9]*) ;;

[Peter Mayo, 2011/02/23 15:46:47]

Are we not confident enough to be happy with 2.30 or 3.1?

Still, seems reasonable given a close eye on the pulse of gold.

[Lei Zhang, 2011/02/23 19:58:15]

Unlike Chrome, it takes binutils roughly a decade to hit 2.30. We'll keep an eye
on it. ;)

 * )
   if test "$do_inst_gold" = ""
@@ -259,7 +259,7 @@
   if test "$do_inst_gold" = "1"
   then
     # If the system provides a good version of gold, just install it.
-    if apt-cache show binutils-gold | grep -Eq 'Version: 2.2(0.1|[1-9]*)'; then
+    if apt-cache show binutils-gold | grep -Eq 'Version: 2.2[1-9]*'; then
       echo "Installing binutils-gold. Backing up ld as ld.single."
       sudo apt-get install binutils-gold
     else