configure

#!/usr/bin/env bash
echo For help type: ./configure --help
args=("$@")
haserror=false
defaultfpc=fpc
wantedfpc=$defaultfpc
if [ -f "debian/CONFIGURE_DEFAULT_FPCBIN" ]; then
	wantedfpc=$(cat debian/CONFIGURE_DEFAULT_FPCBIN)
fi
defaultprefix=/usr/local
wantedprefix=$defaultprefix
if [ -f "debian/CONFIGURE_DEFAULT_LAZDIR" ]; then
	wantedlazdir=$(cat debian/CONFIGURE_DEFAULT_LAZDIR)
else
	wantedlazdir=
fi
for param in "${args[@]}"
do
	if [ "$param" == "-h" ] || [ "$param" == "--help" ]; then
		echo "Usage: ./configure [OPTIONS]"
		echo ""
		echo "    --prefix=PREFIX"
		echo "        Specifies the install prefix."
		echo "        By default prefix is \"$defaultprefix\"" 
		echo "        For packages use \"/usr\""
		echo ""
		echo "    --lazdir=BASE_DIRECTORY_OF_LAZARUS"
		echo "        Specifies to compile with FPC using the specified Lazarus sources."
		echo "        Otherwise lazbuild will be used."
		echo ""
		echo "    --fpcbin=FPC_BINARY"
		echo "        Specifies the command to call Free Pascal Compiler."
		echo "        Default is \"$defaultfpc\""
		exit 0
	elif [ "${param:0:9}" == "--prefix=" ]; then
		wantedprefix=${param:9}
	elif [ "${param:0:9}" == "--lazdir=" ]; then
		wantedlazdir=${param:9}
	elif [ "${param:0:9}" == "--fpcbin=" ]; then
		wantedfpc=${param:9}
	else
		echo "Warning: unknown option $param"
	fi
done
echo "Prefix set to: $wantedprefix"
echo $wantedprefix >prefix
if [ "$wantedlazdir" == "" ]; then
	echo "Using lazbuild"
	rm -f lazdir
	touch lazdir
	rm -f fpcbin
else
	echo "Using FPC with Lazarus source: $wantedlazdir"
	if [ ! -d "$wantedlazdir" ]; then
		echo "Error: directory not found!"
		haserror=true
	elif [ ! -d "$wantedlazdir/lcl" ]; then
		echo "Warning: it does not seem to be the directory of Lazarus!"
	fi
	echo $wantedlazdir >lazdir
	echo "Compiler set to: $wantedfpc"
	rm -f fpcbin
	echo $wantedfpc >fpcbin
fi
if [ "$haserror" = true ]; then
	exit 1
else
	if [ "$(uname)" == "FreeBSD" ]; then
		echo "You can now type: gmake"
	else
		echo "You can now type: make"
	fi
	exit 0
fi