#!/bin/bash
# make like wrapper around "cmake --build"
# (c) 2020 Axel Kohlmeyer <akohlmey@temple.edu>
# This file is in the public domain

WORKDIR="${PWD}"
PARAMS=""
MYARGS=""

usage()
{
   echo "Usage: cmbuild [-v] [-h] [-C <dir>] [-j <num>] [<target>]" >&2
}

help()
{
   usage
   cat >&2 <<EOF

Options:
  -h                print this message
  -j <NUM>          allow processing of NUM concurrent tasks
  -C DIRECTORY      execute build in folder DIRECTORY
  -v                produce verbose output
EOF
}

while (( "$#" )); do
    case "$1" in
      -C)
        WORKDIR="$2"
        shift 2
        ;;
      -v)
        MYARGS="${MYARGS} -v"
        shift
        ;;
      -h)
        help
        exit 2
        ;;
      -j)
        MYARGS="${MYARGS} -j $2"
        shift 2
        ;;
      --)
        shift
        break
        ;;
      -*)
        echo "Error: Unsupported flag $1" >&2
        echo
        usage
        exit 1
        ;;
      *)
        PARAMS="${PARAMS} $1"
        shift
        ;;
    esac
done

if [ ! -f "${WORKDIR}/CMakeCache.txt" ] ; then
   echo "Must execute in a CMake build directory or use -C flag to select one" >&2
   exit 3
fi

eval set -- "${PARAMS} $@"
exec cmake --build "${WORKDIR}" ${MYARGS} --target "$@"