#!/bin/sh

# Given a chroot-root and a .tar.gz file, chroots to the chroot
# and runs 'make distcheck; make deb; make rpm' on the .tar.gz
# file (as $USER, so the chroot should have a user $USER), and
# copies the resulting deb/rpm files to the current directory.
# This can be used to build deb and rpm files on a different
# architecture than the default.

if [ -z "$2" ]; then
   echo "USAGE: $0 <chroot root> <.tar.gz file>"
   exit 1
fi

tgz="$2"
helper="$0.helper"
tgz_base="`basename $tgz`"
helper_base="`basename $helper`"

# I tar up $tgz and $helper into one file, and pass it in to the chroot.
# The --transform does a 'basename' on the $tgz and $helper files, so
# I can write them directly into $HOME in the chroot.

tar cf - -P --transform 's,.*/,,' "$tgz" "$helper" | \
sudo chroot "$1" \
   sudo -u "$USER" \
      sh -x -c "cd $HOME; tar xf -; sh -x './$helper_base' < './$tgz_base'" \
| tar xvf -