Don't screw up /usr/bin/ld if you can't write to current dir as root....

build/install-build-deps.sh

 #!/bin/bash -e
 
 # 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
 
 install_gold() {
   # Gold is optional; it's a faster replacement for ld,
   # and makes life on 2GB machines much more pleasant.
 
+  # First make sure root can access this directory, as that's tripped up some folks.
+  if sudo touch xyz.$$
+  then
+    sudo rm xyz.$$
+  else
+    echo root cannot write to the current directory, not installing gold
+    return
+  fi
+
   BINUTILS=binutils-2.19.1
   BINUTILS_URL=http://ftp.gnu.org/gnu/binutils/$BINUTILS.tar.bz2
   BINUTILS_SHA1=88c91e36cde93433e4c4c2b2e3417777aad84526
 
   test -f $BINUTILS.tar.bz2 || wget $BINUTILS_URL
   if `sha1sum $BINUTILS.tar.bz2` != $BINUTILS_SHA1
   then
     echo Bad sha1sum for $BINUTILS.tar.bz2
     exit 1
   fi
@@ skipping 18 matching lines @@
      this->failed_ = true;
    }
  
 __EOF__
 
   tar -xjvf $BINUTILS.tar.bz2
   cd $BINUTILS
   patch -p1 < ../binutils-fix.patch
   ./configure --prefix=/usr/local/gold --enable-gold
   make -j3
-  sudo make install
-
-  # Still need to figure out graceful way of pointing gyp to use 
-  # /usr/local/gold/bin/ld without requiring him to set environment
-  # variables.  That will go into bootstrap-linux.sh when it's ready.
-  echo "Installing gold as /usr/bin/ld."
-  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 ln -fs /usr/local/gold/bin/ld /usr/bin/ld.gold
-  sudo ln -fs /usr/bin/ld.gold /usr/bin/ld
+  if sudo make install
+  then
+    # Still need to figure out graceful way of pointing gyp to use
+    # /usr/local/gold/bin/ld without requiring him to set environment
+    # variables.  That will go into bootstrap-linux.sh when it's ready.
+    echo "Installing gold as /usr/bin/ld."
+    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 ln -fs /usr/local/gold/bin/ld /usr/bin/ld.gold
+    sudo ln -fs /usr/bin/ld.gold /usr/bin/ld
+  else
+    make install failed, not installing gold

[Paweł Hajdan Jr., 2009/06/30 23:36:12]

Shouldn't that be echo?

+  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
   exit 1
 fi
 
 if ! uname -m | egrep -q "i686|x86_64"; then
   echo "Only x86 architectures are currently supported" >&2
   exit
@@ skipping 140 matching lines @@
   touch "${tmp}/status"
 
   [ -r /etc/apt/apt.conf ] && cp /etc/apt/apt.conf "${tmp}/apt/"
   cat >>"${tmp}/apt/apt.conf" <<-EOF
         Apt::Architecture "i386";
         Dir::Cache "${tmp}/cache";
         Dir::Cache::Archives "${tmp}/";
         Dir::State::Lists "${tmp}/apt/lists/";
         Dir::State::status "${tmp}/status";
         EOF
-  
+
   # Download 32bit packages
   echo "Computing list of available 32bit packages..."
   apt-get -c="${tmp}/apt/apt.conf" update
 
   echo "Downloading available 32bit packages..."
   apt-get -c="${tmp}/apt/apt.conf" \
           --yes --download-only --force-yes --reinstall  install \
           ${lib_list} ${dbg_list}
 
   # Open packages, remove everything that is not a library, move the
@@ skipping 84 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