reconfigure

#!/bin/bash
echo Command line: ./reconfigure $@
# NOTE: this reuses previous configure params stored in configure.opts to
# to reconfigure 

echo "reconfiguring from previous configure run, stored in configure.opts"
echo "args are:"
echo "  <build_dir_name>  name of build directory to reconfigure (could be . if build)"
echo "  --clean           clean existing cmake cache etc first: start fresh"
echo " "
echo "  (note: -- before args is optional, and - works too!)"
echo " "

build_dir="."
clean=false

if [ $# -lt 1 ]; then
   echo "ERROR: requires at least one arg, which is the name of the directory to reconfigure"
   exit 1
fi

build_dir=$1
shift 1   
   
while [ $# -gt 0 ]
do
  preq=${1%%=*}			# get part before =
#  echo $preq
  case $preq
  in
    --help | -help | help)
      exit 0
    ;;
    --clean | -clean | clean | -c)
      clean=true
      shift 1
    ;;

    --dir | -dir | dir)
      build_dir=${1##*=}		# get part after =
      shift 1
    ;;

    *)
      echo "Invalid argument -- please see above list"
      shift 1
    ;;
  esac
done

configfl="${build_dir}/configure.opts"

if [ ! -f ${configfl} ]; then
    echo "ERROR: configure.opts file not found in dir: ${dir}, looking for ${configfl}"
    exit 1
fi

configopts=`cat ${configfl}`

if [[ $clean == "true" ]]; then
    echo "Adding clean option!"
    configopts="${configopts} --clean"
fi

if [[ $build_dir == "." ]]; then
    cd ../
    ./configure ${configopts}
else
    ./configure ${configopts}
fi