#!/bin/sh
# 
# The purpose of this script is to step in if no version of the "redo" build
# system is installed on your system to interpret the files that (Makefile-like)
# build the PlomRogue system: ./all.do, ./roguelike-client.do and
# ./roguelike-server.do.
# 
# If a version of "redo" is installed on your system and in your $PATH, just run
# "redo roguelike-client", "redo roguelike-server" or plain "redo" (to build
# both via all.do). Otherwise, run this very script with the very same
# arguments. It uses parts of a basic "redo" implementation written by Nils
# Dagsson Moskopp a.k.a. erlehmann, snapshots of which are stored in
# build/redo_scripts/. For details on this version, see:
# - <http://news.dieweltistgarnichtso.net/bin/redo.html>
# - <http://news.dieweltistgarnichtso.net/bin/redo-ifchange.html>

# Some tests first: for gcc, and certain necessary header files. (This is not
# strictly the responsibility of a mere redo wrapper. But those using a
# pre-installed redo probably will be fine with the error messages thrown by it
# if these miss.)
test=`command -v gcc | wc -l`
if [ 1 != $test ]
then
    echo "FAILURE:"
    echo "No gcc installed, but it's needed!"
    exit 1
fi
test_header() {
    code="#include <$1>"
    test=`echo $code | cpp -H -o /dev/null 2>&1 | head -n1 | grep error | wc -l`
    if [ 0 != $test ]
    then
        echo "FAILURE:"
        echo "No $1 header file found, but it's needed!"
        echo "Maybe install some $2 package?"
        exit 1
    fi
}
test_header stdlib.h libc6-dev      # Assume stdlib.h guarantees full libc6-dev.
test_header ncurses.h libncurses5-dev

# The actual redo calling.
export PATH=$PATH:$PWD/build/redo_scripts
redo "$@"