# Copyright 1999-2005 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Header: $

inherit eutils libtool

DESCRIPTION="Object-oriented Graphics Rendering Engine"
HOMEPAGE="http://www.ogre3d.org/"
SRC_URI="mirror://sourceforge/ogre/${PN}-linux_osx-v${PV//./-}.tar.bz2"

LICENSE="LGPL-2.1"
SLOT="0"
KEYWORDS="~x86 ~amd64 ~ppc"

# A note on some of the USE flags:
# devil - compiles image loading stuff, recommended unless you have your own image loading code
# double-precision - uses double precision floats, runs slower.
# -
# gtk - compiles the gtk opengl renderer and platform manager
# sdl - compiles the sdl opengl renderer and platform manager
# The above two are mutually exclusive. If they are omitted, the GLX renderer and platform manager is used
# -
# gtk-config - this is separate from the renderers/platforms, it's the toolkit used for config dialogs.
# 	Uses cli if not specified.
#	 Perhaps should be renamed to avoid confusion?
# threads - Enables threading support, this is highly experimental.
IUSE="cegui cg devil double-precision doc gtk gtk-config openexr sdl threads"

RDEPEND=">=dev-libs/zziplib-0.13.36
	sdl? (
		>=media-libs/libsdl-1.2.6
	)
	=media-libs/freetype-2*
	cegui? (
		>=dev-games/cegui-0.2.0
	)
	devil? (
		>=media-libs/devil-1.5
	)
	openexr? (
		>=media-libs/openexr-1.0
	)
	gtk-config? (
		>=dev-cpp/libglademm-2.0
		>=dev-cpp/gtkmm-2.0
	)
	gtk? (
		>=dev-cpp/gtkglextmm-1.0
		>=dev-cpp/libglademm-2.0
	)
	virtual/opengl
	sys-libs/zlib"
DEPEND="${RDEPEND}
	>=sys-devel/libtool-1.5.0
    sys-devel/flex
	cg? ( >=media-gfx/nvidia-cg-toolkit-1.2 )
	amd64? || (
		dev-libs/STLport
		>=sys-devel/gcc-3.0 )"

S="${WORKDIR}/ogrenew"

pkg_setup() {
	if use gtk && use sdl; then
		die "The sdl and gtk USE flags are mutually exclusive! Please choose one or the other."
	fi
	
	ewarn "Please note:"
	if ! use cg; then
		ewarn "It is recommended that you emerge ogre with the cg USE flag."
	fi
	
	if use double-precision; then
		ewarn "You are using the double-precision USE flag; double floating point precision mode is much slower than normal."
	fi

	if use threads; then
		ewarn "You are using the threads USE flag; threading is still highly experimental. Use with caution."
	fi

	ewarn "The gtk and sdl flags are mutually exclusive. If neither is selected glx support is assumed."
	ewarn "The gtk-config flag is used to specify the toolkit used for configuration dialogs. If not selected, cli will be used."
 	epause 10
}

src_compile() {
	elibtoolize
	
	local myconf="cli"
	local myplat="GLX"
	local flags=""

	use gtk-config && myconf="gtk"
	use sdl && myplat="SDL"
	use gtk && myplat="gtk"
	
	# use_enable was not used because it doesn't work correctly with ogre.
	use double-precision && flags="$flags --enable-double"
	use threads && flags="$flags --enable-threading"
	use devil || flags="$flags --disable-devil"
	use cg || flags="$flags --disable-cg"
	use openexr && flags="$flags --enable-openexr"
	use sdl || flags="$flags --disable-sdltest"

	econf --with-cfgtk=${myconf} \
		--with-platform=${myplat} \
		--with-gl-support=${myplat} \
		$flags \
		|| die
	emake || die "emake failed"
}

src_install() {
	make DESTDIR="${D}" install || die "make install failed"
	if use doc ; then
		dohtml -r Docs/* Docs/Tutorials/*
	fi
	insinto /usr/share/OGRE/Media
	doins Samples/Media/*
	dodoc AUTHORS BUGS LINUX.DEV README Docs/README.linux
	dohtml Docs/*.html
	# Maybe install the sample applications somewhere as well?
}