#!/bin/sh -e

function show_help () {
cat <<EOL
Usage: configure [options]
    -h, --help              Displays this help

    --disable-mac           Disable most of the Mac-related parts.
    --disable-ios           Disable most of the iOS-related parts.
                            The iOS build depend on some parts of the Mac build, so
                            a complete separation is not possible (neither desirable,
                            some parts will always be enabled to catch common programmer
                            errors causing build breaks).
                            The main reasons for disabling either part is to have faster
                            builds and disable the non-relevant tests.

    --disable-strip:        If executables should be stripped or not.
                            Disable to make it easier to debug executables using lldb.

    --enable-ccache
    --disable-ccache        Enable/disable ccache. Default: enabled if detected.

    --enable-xamarin        Enable additional Xamarin-specific parts of the build.

EOL
}

CONFIGURED_FILE=configure.inc

rm -f $CONFIGURED_FILE

if test -z "$1"; then
	echo "configure: all default values assumed."
    exit 0
fi

while test x$1 != x; do
	case $1 in
	--disable-mac)
		echo "INCLUDE_MAC=" >> $CONFIGURED_FILE
		echo "Mac Build disabled (partially)"
		shift
		;;
	--disable-ios)
		echo "INCLUDE_IOS=" >> $CONFIGURED_FILE
		echo "INCLUDE_WATCH=" >> $CONFIGURED_FILE
		echo "INCLUDE_TVOS=" >> $CONFIGURED_FILE
		echo "iOS Build disabled (partially)"
		shift
		;;
	--disable-strip)
		echo "DISABLE_STRIP=1" >> $CONFIGURED_FILE
		shift
		;;
    --disable-ccache)
        echo "ENABLE_CCACHE=" >> $CONFIGURED_FILE
        shift
        ;;
    --enable-ccache)
        if ! CCACHE=$(which ccache); then
            echo "Could not find ccache"
        else
            echo "ENABLE_CCACHE=1" >> $CONFIGURED_FILE
            echo "cache enabled"
        fi
        shift
        ;;
    --enable-xamarin)
        echo "ENABLE_XAMARIN=1" >> $CONFIGURED_FILE
        shift
        ;;
	--help|-h)
		show_help
		exit 0
		;;
	*)
		echo Unknown configure argument $1 >&2
		shift
		;;
	esac
done