configure

#!/bin/sh
usage () {
echo "usage: configure [-h|--help|-d|--debug]"
echo "usage: configure [-h|--help|-d|--debug]"
cat <<EOF
usage: configure [ <option> ... ]

where '<option>' is one of the following:

-c | --check         include assertion checking (default for '--debug')
-d | --debug | -g    enable debugging (implies '-d', '-l', and '-s')
-h | --help          print this command line option summary
-l | --logging       include logging code (default for '--debug')
-s | --symbols       include symbol table (default for '--debug')
     --sanitize      use '-fsanitize=address,undefined' sanitizers
EOF
exit 1
}
die () {
  echo "configure: error: $*" 1>&2
  exit 1
}
check=no
debug=no
logging=no
symbols=no
sanitize=no
while [ $# -gt 0 ]
do
  case $1 in
    -c|--check) debug=yes;;
    -g | -d|--debug) debug=yes;;
    -h|--help) usage;;
    -l|--logging) logging=yes;;
    -s|--symbols) symbols=yes;;
    --sanitize) sanitize=yes;;
    *) die "invalid option '$1' (try '-h')";;
  esac
  shift
done

COMPILE="g++ -Wall"

[ $debug = yes ] && check=yes
[ $debug = yes ] && logging=yes
[ $debug = yes ] && symbols=yes

[ $symbols = yes ] && COMPILE="$COMPILE -g"
[ $debug = no ] && COMPILE="$COMPILE -O3"
[ $sanitize = yes ] && COMPILE="$COMPILE -fsanitize=address,undefined"
[ $logging = yes ] && COMPILE="$COMPILE -DLOGGING"
[ $check = no ] && COMPILE="$COMPILE -DNDEBUG"

echo "configure: using '$COMPILE'"
sed -e "s#@COMPILE@#$COMPILE#" makefile.in > makefile