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#!/usr/bin/env bash
set -eu
usage() {
echo "Usage: ./configure [OPTION]"
echo
echo "Configuration:"
echo " -h, --help display this help and exit"
echo
echo "Installation directories:"
echo " --destination=[local|global] install Python package locally or globally"
}
# -allow a command to fail with !’s side effect on errexit
# -use return value from ${PIPESTATUS[0]}, because ! hosed $?
! getopt --test > /dev/null
if [[ ${PIPESTATUS[0]} -ne 4 ]]; then
echo 'getopt not available'
exit 1
fi
LONGOPTS=destination:,help
OPTIONS=h
! PARSED=$(getopt --options=$OPTIONS --longoptions=$LONGOPTS --name "$0" -- "$@")
if [[ ${PIPESTATUS[0]} -ne 0 ]]; then
# e.g. return value is 1
# then getopt has complained about wrong arguments to stdout
exit 2
fi
# read getopt’s output this way to handle the quoting right:
eval set -- "$PARSED"
destination="local"
while true; do
case "$1" in
--destination)
destination="$2"
shift 2
;;
-h|--help)
usage
exit 1
;;
--)
shift
break
;;
*)
echo "Programming error"
exit 3
;;
esac
done
case "$destination" in
local)
install_global=false
;;
global)
install_global=true
;;
*)
echo "Destination (--destination) must be 'local' or 'global', paths are not allowed."
exit 3
;;
esac
cat << EOF > config.mk
# this file is autogenerated by ./configure
install_global=$install_global
EOF
if ! python3 --version &>/dev/null; then
echo 'Error: python3 missing'
exit 1
fi
if ! pip3 --version &>/dev/null; then
echo 'Error: pip3 missing'
exit 1
fi
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