Download into unique subdir of /tmp to avoid permission problems (e.g. root n...

build/install-build-deps.sh

 #!/bin/sh
 # 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
 set -ex
 
+# Root can't access files on all filesystems, but /tmp should always be ok
+# (unless it's full).  
+DIR=`mktemp -d`
+cd $DIR
+touch .created
+
+cleanup() {
+  test -f $DIR/.created && rm -rf $DIR
+}
+
 # TODO(dkegel): add sha1sum verification
 download() {
   dir=$1
   file=$2
   if ! test -f $file
   then
     wget $MIRROR/$dir/$file
   fi
 }
 
@@ skipping 71 matching lines @@
 }
 
 if egrep -q "Ubuntu 8.04|Ubuntu 8.10" /etc/issue && test `uname -m` = i686
 then
   install_hardy
 elif egrep -q "Ubuntu 8.04|Ubuntu 8.10" /etc/issue && test `uname -m` = x86_64
 then
   install_hardy_64
 else
   echo "Unsupported system"
+  cleanup
   exit 1
 fi
+cleanup