# Copyright 1999-2015 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Header: $

EAPI=5

PYTHON_COMPAT=( python2_7 )
inherit eutils linux-mod multilib python-single-r1 versionator toolchain-funcs

MY_PV="${PV/beta/BETA}"
MY_PV="${MY_PV/rc/RC}"
MY_P=VirtualBox-${MY_PV}
DESCRIPTION="VirtualBox video driver"
HOMEPAGE="http://www.virtualbox.org/"
SRC_URI="http://download.virtualbox.org/virtualbox/${MY_PV}/${MY_P}.tar.bz2"

LICENSE="GPL-2"
SLOT="0"
KEYWORDS="~amd64 ~x86"
IUSE="dri"

RDEPEND=">=x11-base/xorg-server-1.7:=[-minimal]
    x11-libs/libXcomposite"
DEPEND="${RDEPEND}
    >=dev-util/kbuild-0.1.9998_pre20131130
    ${PYTHON_DEPS}
    >=dev-lang/yasm-0.6.2
    sys-power/iasl
    x11-proto/fontsproto
    x11-proto/randrproto
    x11-proto/renderproto
    x11-proto/resourceproto
    x11-proto/scrnsaverproto
    x11-proto/xextproto
    x11-proto/xineramaproto
    x11-proto/xproto
    x11-libs/libXdmcp
    x11-libs/libXau
    x11-libs/libX11
    x11-libs/libXfixes
    x11-libs/libXext
    dri? (  x11-proto/xf86driproto
	>=x11-libs/libdrm-2.4.5 )"

REQUIRED_USE=( "${PYTHON_REQUIRED_USE}" )

BUILD_TARGETS="all"
BUILD_TARGET_ARCH="${ARCH}"
MODULE_NAMES="vboxvideo(misc:${WORKDIR}/vboxvideo_drm:${WORKDIR}/vboxvideo_drm)"

S="${WORKDIR}/${MY_P}"

QA_TEXTRELS_x86="usr/lib/VBoxOGL.so"

pkg_setup() {
    linux-mod_pkg_setup
    BUILD_PARAMS="KERN_DIR=${KV_OUT_DIR} KERNOUT=${KV_OUT_DIR}"

    python-single-r1_pkg_setup
}

src_prepare() {
    # Prepare the vboxvideo_drm sources and Makefile in ${WORKDIR}
    cp -a "${S}"/src/VBox/Additions/linux/drm "${WORKDIR}/vboxvideo_drm" \
	|| die "cannot copy vboxvideo_drm directory"
    cp "${FILESDIR}/${PN}-3-vboxvideo_drm.makefile" \
	"${WORKDIR}/vboxvideo_drm/Makefile" \
	    || die "cannot copy vboxvideo_drm Makefile"

    # stupid new header references...
    for vboxheader in {product,version}-generated.h ; do
	ln -sf "${S}"/out/linux.${ARCH}/release/${vboxheader} \
	    "${WORKDIR}/vboxvideo_drm/${vboxheader}"
    done

    # Remove shipped binaries (kBuild,yasm), see bug #232775
    rm -rf kBuild/bin tools

    # Disable things unused or splitted into separate ebuilds
    cp "${FILESDIR}/${PN}-5-localconfig" LocalConfig.kmk || die

    # Ugly hack to build the opengl part of the video driver
    epatch "${FILESDIR}/${PN}-2.2.0-enable-opengl.patch"

    # unset useless/problematic checks in configure
    epatch "${FILESDIR}/${PN}-5.0.0_beta3-configure_checks.patch"

    # Patch to link with lazy on hardened #394757
    if gcc-specs-now ; then
	epatch "${FILESDIR}/${PN}-4.3.6-link-lazy.patch"
    fi

    # fix
    sed -i -e 's/VBOX_WITH_WARNINGS_AS_ERRORS = 1/VBOX_WITH_WARNINGS_AS_ERRORS_NOT_DEFINED = 1/g' Config.kmk
}

src_configure() {
    # build the user-space tools, warnings are harmless
    local cmd=(
	./configure
	--nofatal
	--disable-xpcom
	--disable-sdl-ttf
	--disable-pulse
	--disable-alsa
	--with-gcc="$(tc-getCC)"
	--with-g++="$(tc-getCXX)"
	--target-arch=${ARCH}
	--with-linux="${KV_OUT_DIR}"
	--build-headless
    )
    echo "${cmd[@]}"
    "${cmd[@]}" || die "configure failed"
    source ./env.sh
    export VBOX_GCC_OPT="${CFLAGS} ${CPPFLAGS}"
}

src_compile() {
    for each in /src/VBox/{Runtime,Additions/common/VBoxGuestLib} \
	/src/VBox/{GuestHost/OpenGL,Additions/x11/x11stubs,Additions/common/crOpenGL} \
	/src/VBox/Additions/x11/vboxvideo ; do
	    cd "${S}"${each} || die
	    MAKE="kmk" \
	    emake TOOL_YASM_AS=yasm \
	    VBOX_USE_SYSTEM_XORG_HEADERS=1 \
	    KBUILD_PATH="${S}/kBuild" \
	    KBUILD_VERBOSE=2
    done

    if use dri ; then
	# Now creating the kernel modules. We must do this _after_
	# we compiled the user-space tools as we need two of the
	# automatically generated header files. (>=3.2.0)
	linux-mod_src_compile
    fi
}

src_install() {
    if use dri; then
	linux-mod_src_install
    fi

    cd "${S}/out/linux.${ARCH}/release/bin/additions"
    insinto /usr/$(get_libdir)/xorg/modules/drivers
    newins vboxvideo_drv_system.so vboxvideo_drv.so

    # Guest OpenGL driver
    insinto /usr/$(get_libdir)
    doins -r VBoxOGL*

    if use dri ; then
	dosym /usr/$(get_libdir)/VBoxOGL.so \
	    /usr/$(get_libdir)/dri/vboxvideo_dri.so
    fi
}

pkg_postinst() {
    elog "You need to edit the file /etc/X11/xorg.conf and set:"
    elog ""
    elog "  Driver  \"vboxvideo\""
    elog ""
    elog "in the Graphics device section (Section \"Device\")"
    elog ""
    if use dri; then
	elog "To use the kernel drm video driver, please add:"
	elog "\"vboxvideo\" to:"
	if has_version sys-apps/openrc ; then
	    elog "/etc/conf.d/modules"
	else
	    elog "/etc/modules.autoload.d/kernel-${KV_MAJOR}.${KV_MINOR}"
	fi
	elog ""
    fi
}