Add support for Ubuntu 9.10 to install-build-deps.sh...

build/install-build-deps.sh

 #!/bin/bash -e
 
 # Copyright (c) 2009 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 # Script to install everything needed to build chromium (well, ideally, anyway)
 # See http://code.google.com/p/chromium/wiki/LinuxBuildInstructions
 # and http://code.google.com/p/chromium/wiki/LinuxBuild64Bit
 
@@ skipping 115 matching lines @@
     echo "To uninstall, do 'cd /usr/bin; sudo rm ld; sudo mv ld.orig ld'"
     test -f /usr/bin/ld && sudo mv /usr/bin/ld /usr/bin/ld.orig
     sudo strip /usr/local/gold/bin/ld
     sudo ln -fs /usr/local/gold/bin/ld /usr/bin/ld.gold
     sudo ln -fs /usr/bin/ld.gold /usr/bin/ld
   else
     echo "make install failed, not installing gold"
   fi
 }
 
-if ! egrep -q "Ubuntu 8.04|Ubuntu 8.10|Ubuntu 9.04" /etc/issue; then
-  echo "Only Ubuntu 8.04, 8.10, and 9.04 are currently supported" >&2
+if ! egrep -q 'Ubuntu (8\.04|8\.10|9\.04|9\.10)' /etc/issue; then
+  echo "Only Ubuntu 8.04, 8.10, 9.04, and 9.10 are currently supported" >&2
   exit 1
 fi
 
 if ! uname -m | egrep -q "i686|x86_64"; then
   echo "Only x86 architectures are currently supported" >&2
   exit
 fi
 
 if [ "x$(id -u)" != x0 ]; then
   echo "Running as non-root user."
@@ skipping 125 matching lines @@
 fi
 
 # Some operating systems already ship gold
 # (on Debian, you can probably do "apt-get install binutils-gold" to get it),
 # but though Ubuntu toyed with shipping it, they haven't yet.
 # So just install from source if it isn't the default linker.
 
 case `ld --version` in
 *gold*) ;;
 * )
-  # FIXME: avoid installing as /usr/bin/ld
   echo "Gold is a new linker that links Chrome 5x faster than ld."
   echo "Don't use it if you need to link other apps (e.g. valgrind, wine)"
-  echo -n "REPLACE SYSTEM LINKER ld with gold and back up ld as ld.orig? (y/N) "
+  echo -n "REPLACE SYSTEM LINKER ld with gold and back up ld? (y/N) "
   if yes_no 1; then
-    echo "Building binutils."
-    install_gold || exit 99
+    # If the system provides gold, just install it.
+    if apt-cache show binutils-gold >/dev/null; then
+      echo "Installing binutils-gold. Backing up ld as ld.single."
+      sudo apt-get install binutils-gold
+    else
+      # FIXME: avoid installing as /usr/bin/ld
+      echo "Building binutils. Backing up ld as ld.orig."
+      install_gold || exit 99
+    fi
   else
     echo "Not installing gold."
   fi
 esac
 
 # Install 32bit backwards compatibility support for 64bit systems
 if [ "$(uname -m)" = "x86_64" ]; then
   echo "Installing 32bit libraries that are not already provided by the system"
   echo
   echo "While we only need to install a relatively small number of library"
@@ skipping 120 matching lines @@
              sed -e 's/[.]so[.][0-9].*/.so/' |
              sort -u); do
     [ "x${i##*/}" = "xld-linux.so" ] && continue
     [ -r "$i" ] && continue
     j="$(ls "$i."* | sed -e 's/.*[.]so[.]\([^.]*\)$/\1/;t;d' |
          sort -n | tail -n 1)"
     [ -r "$i.$j" ] || continue
     sudo ln -s "${i##*/}.$j" "$i"
   done
 fi