#!/bin/sh

# This 'configure' script is a very easy wrapper around 'make updateconf'
#  It allows cross-compilers to do their job much more easy.

function showhelp() {
	echo "Configure for OpenTTD"
	echo ""
	echo "Usage:"
	echo " $0 --your_options"
	echo ""
	echo "Params:"
	echo " --debug            Create debug-release                [no]"
	echo " --profile          Create profile-release              [no]"
	echo " --revision         Set the revision of the compilation [detected]"
	echo " --target-cc        Sets the target-compiler            [\$CC]"
	echo " --target-cxx       Sets the C++ target-compiler        []"
	echo " --host-cc          Sets the host-compiler              [\$CC]"
	echo " --os               Sets the OS. Listens to:            [detected]"
	echo "                       UNIX, OSX, FREEBSD, MORPHOS"
	echo "                       BEOS, SUNOS, CYGWIN, MINGW"
	echo " --windres          Sets the windres (Windows)          [windres]"
	echo " --force-le         Force LE platform                   [no]"
	echo " --force-be         Force BE platform                   [no]"
	echo ""
	echo "Params that can be used with --with or --without"
	echo "   (e.g.: --without-static disables static (default))"
	echo " static             Do you want a static build?         [no]"
	echo " directmusic        Do you want direct-music?           [no]"
	echo " zlib               Do you want zlib-support?           [yes]"
	echo " sdl                Do you want SDL-support?            [yes]"
	echo " png                Do you want PNG-support?            [yes]"
	echo " cocoa              Do you want cocoa-support? (MacOSX) [no]"
	echo ""
	echo "Params used to configure external libs:"
	echo " --static-zlib-path Set the path to your static zlib    []"
	echo " --sdl-config       Where is your sdl-config            [sdl-config]"
	echo " --libpng-config    Where is your libpng-config         [libpng-config]"
	echo " "
}

function handle() {
	PARAM="$PARAM $1=`awk 'BEGIN { FS="="; $0="'$2'"; print $2;}'`"
}

# The things you can use inside this case:
#  handle NAME VALUE - Sets the value to give the 'make upgradeconf'
#                         Value is in form: tag=REAL_VALUE
#  ITEM="NAME"       - Will set the value as above, only with the next param
#  SITEM="NAME"      - Will set the var $NAME to the next param
for n in $*
do
	case "$n" in
		--help | -h)
			showhelp
			exit 0
			;;

		--debug)
			PARAM="$PARAM DEBUG=1"
			;;
		--profile)
			PARAM="$PARAM PROFILE=1"
			;;
		--revision=*)
			RELEASE=`awk 'BEGIN { FS="="; $0="'$n'"; print $2;}'`
			;;
		--revision)
			SITEM="RELEASE"
			;;
		--target-cc=*)
			handle "CC_TARGET" $n
			;;
		--target-cc)
			ITEM="CCTARGET"
			;;
		--target-cxx=*)
			TARGET_CXX=`awk 'BEGIN { FS="="; $0="'$n'"; print $2;}'`
			;;
		--target-cxx)
			SITEM="TARGET_CXX"
			;;
		--host-cc=*)
			handle CC_HOST $n
			;;
		--host-cc)
			ITEM="CC_HOST"
			;;
		--os=*)
			TARGET_OS=`awk 'BEGIN { FS="="; $0="'$n'"; print $2;}'`
			;;
		--os)
			SITEM="TARGET_OS"
			;;
		--windres=*)
			handle WINDRES $n
			;;
		--windres)
			ITEM="WINDRES"
			;;
		--force-le)
			PARAM="$PARAM ENDIAN_FORCE=LE"
			;;
		--force-be)
			PARAM="$PARAM ENDIAN_FORCE=BE"
			;;

		--with-static)
			PARAM="$PARAM STATIC=1"
			;;
		--without-static)
			PARAM="$PARAM STATIC="
			;;
		--with-directmusic)
			PARAM="$PARAM WITH_DIRECTMUSIC=1"
			;;
		--without-directmusic)
			PARAM="$PARAM WITH_DIRECTMUSIC="
			;;
		--with-zlib)
			PARAM="$PARAM WITH_ZLIB=1"
			;;
		--without-zlib)
			PARAM="$PARAM WITH_ZLIB="
			;;
		--with-sdl)
			PARAM="$PARAM WITH_SDL=1"
			;;
		--without-sdl)
			PARAM="$PARAM WITH_SDL="
			;;
		--with-png)
			PARAM="$PARAM WITH_PNG=1"
			;;
		--without-png)
			PARAM="$PARAM WITH_PNG="
			;;
		--with-cocoa)
			PARAM="$PARAM WITH_COCOA=1"
			;;
		--without-cocoa)
			PARAM="$PARAM WITH_COCOA="
			;;
		--static-zlib-path=*)
			handle STATIC_ZLIB_PATH $n
			;;
		--static-zlib-path)
			ITEM="STATIC_ZLIB_PATH"
			;;
		--sdl-config=*)
			handle SDL-CONFIG $n
			;;
		--sdl-config)
			ITEM="SDL-CONFIG"
			;;
		--libpng-config=*)
			handle LIBPNG-CONFIG $n
			;;
		--lib-png-config)
			ITEM="LIBPNG-CONFIG"
			;;

		--*=*)
			echo -n "Unknown switch "
			echo `awk 'BEGIN { FS="="; $0="'$n'"; print $1;}'`
			exit 1
			;;
		-*)
			echo "Unknown switch $n"
			exit 1
			;;

		*)
			if ! test -z "$ITEM"
			then
				PARAM="$PARAM $ITEM=$n"
				ITEM="";
			elif ! test -z "$SITEM"
			then
				export $SITEM=$n
				SITEM=""
			else
				echo "Unknown switch $n"
				exit 1
			fi
			;;
	esac
done

if ! test -z "$TARGET_OS"
then
	TARGET_OS=`echo $TARGET_OS | tr '[:lower:]' '[:upper:]'`
	case "$TARGET_OS" in
		WIN32)
			PARAM="$PARAM WIN32=1"
			;;
		UNIX)
			PARAM="$PARAM UNIX=1"
			;;
		OSX)
			PARAM="$PARAM OSX=1 UNIX=1"
			;;
		FREEBSD)
			PARAM="$PARAM FREEBSD=1"
			;;
		MORPHOS)
			PARAM="$PARAM MORPHOS=1 UNIX=1"
			;;
		BEOS)
			PARAM="$PARAM BEOS=1 UNIX=1"
			;;
		SUNOS)
			PARAM="$PARAM SUNOS=1 UNIX=1"
			;;
		CYGWIN)
			PARAM="$PARAM CYGWIN=1 WIN32=1"
			;;
		MINGW)
			PARAM="$PARAM MINGW=1 WIN32=1"
			;;
		*)
			echo "Unknown OS: $TARGET_OS"
			exit 1
			;;
	esac
	PARAM="$PARAM BYPASS_OS_DETECT=1"
fi

rm Makefile.config
make upgradeconf $PARAM

# Makefile.config currently doesn't support custom CXX, so, we add the line
#  ourself!

if ! test -z "$TARGET_CXX"
then
	echo "CXX=$TARGET_CXX" >> Makefile.config
fi

# Same for RELEASE (read: REVISION)

if ! test -z "$RELEASE"
then
	echo "RELEASE=$RELEASE" >> Makefile.config
fi