configure

#!/bin/bash

# This file creates the necessary Makefiles for building Turtl core for your
# platform.

ECL_BIN_PATH=""
ECL_INC_PATH=""
ECL_LIB_PATH=""

function guess_ecl_bin_path {
	if [ "$ECL_BIN_PATH" != "" ]; then
		return
	fi

	ECL_WHICH=`which ecl 2> /dev/null`
	if [ "$ECL_WHICH" != "" ]; then
		ECL_BIN_PATH=`dirname $ECL_WHICH`
		return
	fi

	CHECK=("/usr/local/ecl/bin/ecl" "/opt/ecl/bin/ecl" "/usr/local/ecl/ecl.exe" "/c/usr/local/ecl/ecl.exe" "/d/usr/local/ecl/ecl.exe")
	for i in "${CHECK[@]}"; do
		if [ -x $i ]; then
			ECL_BIN_PATH=`dirname $i`
			return
		fi
	done
}

function guess_ecl_include_path {
	if [ "$ECL_INC_PATH" != "" ]; then
		return
	fi

	if [ "$ECL_BIN_PATH" == "" ]; then
		return
	fi

	if [ -d "$ECL_BIN_PATH/../include" ]; then
		ECL_INC_PATH="$ECL_BIN_PATH/../include"
		return
	fi

	if [ -f "$ECL_BIN_PATH/ecl/ecl.h" ]; then
		ECL_INC_PATH=$ECL_BIN_PATH
		return
	fi
}

function guess_ecl_lib_path {
	if [ "$ECL_LIB_PATH" != "" ]; then
		return
	fi

	if [ "$ECL_BIN_PATH" == "" ]; then
		return
	fi

	if [ -d "$ECL_BIN_PATH/../lib" ]; then
		ECL_LIB_PATH="$ECL_BIN_PATH/../lib"
		return
	fi

	if [ -f "$ECL_BIN_PATH/ecl.dll" ]; then
		ECL_LIB_PATH=$ECL_BIN_PATH
		return
	fi
}

guess_ecl_bin_path

function print_help {
	echo "Welcome to Turtl's (probably foolishly) hand-generated configure script."
	echo "Usage:"
	echo "  ./configure [OPTIONS]"
	echo
	echo "Options:"
	echo "  --help                      Show this help"
	echo "  --ecl-bin-path [path]       Set the path that contains the ECL binaries."
	echo "  --ecl-include-path [path]   Set the path to ECL's headers."
	echo "  --ecl-lib-path [path]       Set the path to ECL's libs (libecl.so/ecl.dll)."
	echo
	echo "Note that setting --ecl-bin-path will help the configure script find the"
	echo "rest of the ECL directories, assuming you didn't split them up."
	echo
}

while test -n "$1"; do
    case "$1" in
        --help)
            print_help
			exit 0
            ;;
		--ecl-bin-path)
			ECL_BIN_PATH=$2
			shift
			;;
		--ecl-include-path)
			ECL_INC_PATH=$2
			shift
			;;
		--ecl-lib-path)
			ECL_LIB_PATH=$2
			shift
			;;
        *)
			CFG_ARGS="$*"
			break;
            ;;
    esac
    shift
done

guess_ecl_include_path
guess_ecl_lib_path

ECL_EXE=$ECL_BIN_PATH/ecl

if [ -d $ECL_EXE ]; then
	ECL_EXE=$ECL_BIN_PATH/ecl.exe
fi

if [ "$CC" == "" ]; then
	CC="gcc"
fi

echo "Found the following paths:"
echo "  ECL bin:      $ECL_BIN_PATH"
echo "  ECL include:  $ECL_INC_PATH"
echo "  ECL lib:      $ECL_LIB_PATH"
echo "  ECL exe:      $ECL_EXE"
echo
echo "Generating Makefiles."

MAKEFILES=(./Makefile.in ./src/Makefile.in ./app/Makefile.in)
for mf in "${MAKEFILES[@]}"; do
	if [ ! -f $mf ]; then
		echo "Missing makefile: $mf"
		continue
	fi
	real="`echo $mf | sed 's|\.in$||'`"
	cp $mf $real
	sed -i "s|@cc@|${CC}|g" $real
	sed -i "s|@ecl_bin@|${ECL_BIN_PATH}|g" $real
	sed -i "s|@ecl_inc@|${ECL_INC_PATH}|g" $real
	sed -i "s|@ecl_lib@|${ECL_LIB_PATH}|g" $real
	sed -i "s|@ecl_exe@|${ECL_EXE}|g" $real
	echo "  generated $real"
done