#!/bin/sh
ENV_CPPFLAGS="$CPPFLAGS"
ENV_OBJCFLAGS="$OBJCFLAGS"
ENV_LIBS="$LIBS"
ENV_LDFLAGS="$LDFLAGS"

prefix="@prefix@"
exec_prefix="@exec_prefix@"
libdir="@libdir@"
CFLAGS=""
CPPFLAGS="-I@includedir@"
CXXFLAGS=""
OBJC="@OBJC@"
OBJCFLAGS="@GNU_RUNTIME@ -fexceptions -fobjc-exceptions"
OBJCFLAGS="$OBJCFLAGS -fconstant-string-class=OFConstString"
OBJCFLAGS="$OBJCFLAGS @NO_CONST_CFSTRINGS@ @NO_WARN_UNUSED@ @ATOMIC_OBJCFLAGS@"
LDFLAGS=""
LDFLAGS_RPATH="@LDFLAGS_RPATH@"
LIBS="-L${libdir} -lobjfw @LIBS@"
VERSION="0.3-dev"

show_help() {
	cat <<__EOF__
$0: Available arguments are:

	--all		Outputs all flags + libs
	--cflags	Outputs the required CFLAGS
	--compile out	Compiles and links the specified files if they changed
	--cppflags	Outputs the required CPPFLAGS
	--cxxflags	Outputs the required CXXFLAGS
	--objc		Outputs the OBJC used to compile ObjFW
	--objcflags	Outputs the required OBJCFLAGS
	--ldflags	Outputs the required LDFLAGS
	--rpath		Outputs LDFLAGS for using rpath
	--libs		Outputs the required LIBS
	--version	Outputs the installed version
__EOF__
	exit 0
}

compile() {
	out="$1"
	objs=""
	link="no"
	shift

	case "$out" in
		*.c | *.C | *.cpp | *.cxx | *.C | *.h | *.m | *.mm | *.M)
			echo "The first paramter must be the output name!" 1>&2
			exit 1
			;;
	esac

	while test x"$1" != "x"; do
		case "$1" in
			*.m)
				obj="${1%.m}.o"
				objs="$objs $obj"

				if test ! -f "$obj" -o "$1" -nt "$obj"; then
					link="yes"
					echo "Compiling $1..."
					$OBJC $CPPFLAGS $OBJCFLAGS \
						$ENV_CPPFLAGS $ENV_OBJCFLAGS \
						-c -o $obj $1 || exit $?
				fi
				;;
			*)
				echo "Only .m files can be compiled!" 1>&2
				exit 1
				;;
		esac

		shift
	done

	if test ! -f "$out" -o x"$link" = x"yes"; then
		echo "Linking $out..."
		$OBJC -o $out $objs $LIBS $ENV_LIBS $LDFLAGS $ENV_LDFLAGS
		exit $?
	fi

	echo "Nothing to do for $out..."
	exit 0
}

test -z "$1" && show_help

while test ! -z "$1"; do
	case "$1" in
		--all)
			echo "$CFLAGS"
			echo "$CPPFLAGS"
			echo "$CXXFLAGS"
			echo "$OBJCFLAGS"
			echo "$LDFLAGS"
			echo "$RPATH_LDFLAGS"
			echo "$LIBS"
			;;
		--cflags)
			echo "$CFLAGS"
			;;
		--compile)
			shift
			compile $@
			;;
		--cppflags)
			echo "$CPPFLAGS"
			;;
		--cxxflags)
			echo "$CXXFLAGS"
			;;
		--objc)
			echo "$OBJC"
			;;
		--objcflags)
			echo "$OBJCFLAGS"
			;;
		--libs)
			echo "$LIBS"
			;;
		--ldflags)
			echo "$LDFLAGS"
			;;
		--rpath)
			echo "$LDFLAGS_RPATH"
			;;
		--version)
			echo "$VERSION"
			;;
		*)
			echo "Invalid option: $1" 1>&2
			exit 1
			;;
	esac

	shift
done
