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#! /usr/bin/env bash

# Test build2 toolchain (and brep) upgrade. The old packages come from
# cppget.org/alpha and the new ones from cppget.org/queue. Run from build2/
# root.
#
# Usage: test-upgrade [options] <old-toolchain>
#
# -c <option>|<module>|<var>
#    Specify additional options, modules, or configuration variables to pass
#    to the bpkg create command. For example:
#
usage="usage: $0 -t <old-toolchain>"

owd=`pwd`
trap "{ cd $owd; exit 1; }" ERR
set -o errtrace # Trap in functions.

function info () { echo "$*" 1>&2; }
function error () { info "$*"; exit 1; }

cfg=/tmp/upgrade-cfg
ins=/tmp/upgrade-install
toolchain=
co=() # Use a bash array to handle arguments with spaces (say "-Ifoo -Ibar").

while [ $# -gt 0 ]; do
  case $1 in
    -c)
      shift
      co=("${co[@]}" "$1")
      shift
      ;;
    *)
      toolchain=${1%/}
      shift
      break
      ;;
  esac
done

if [ -z "$toolchain" ]; then
  error $usage
fi

ob="$toolchain/bin/b"
if [ ! -x $ob ]; then
  error "$ob does not exist or is not executable"
fi
obo="--build $ob"

obpkg="$toolchain/bin/bpkg"
if [ ! -x $obpkg ]; then
  error "$obpkg does not exist or is not executable"
fi

# First create the configuration and build old packages using the old
# toolchain.
#
$obpkg $obo create -d $cfg --wipe "${co[@]}"
$obpkg add -d $cfg cppget.org/repository/1/alpha
$obpkg fetch -d $cfg
$obpkg $obo build -d $cfg --yes build2 bpkg brep

# Now upgrade to new packages but still using the old toolchain.
#
$obpkg add -d $cfg cppget.org/repository/1/queue
$obpkg fetch -d $cfg
$obpkg $obo build -d $cfg --yes build2 bpkg brep

# Install the new packages still using the old toolchain.
#
$obpkg $obo install -d $cfg config.install.root=$ins \
  config.bin.rpath=$ins/lib build2 bpkg brep

$ins/bin/b --version 1>&2
$ins/bin/bpkg --version 1>&2
$ins/bin/brep-load --version 1>&2

# Check the use of the new toolchain on the old configuration.
#
nb="$ins/bin/b"
nbo="--build $nb"
nbpkg="$ins/bin/bpkg"

$nbpkg $nbo clean -d $cfg build2 bpkg brep
$nbpkg $nbo build -d $cfg --yes build2 bpkg brep
$nbpkg $nbo install -d $cfg config.install.root=$ins \
  config.bin.rpath=$ins/lib build2 bpkg brep

$ins/bin/b --version 1>&2
$ins/bin/bpkg --version 1>&2
$ins/bin/brep-load --version 1>&2