# Copyright 1999-2011 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Header: $

EAPI="2"

inherit eutils multilib toolchain-funcs versionator

DESCRIPTION="AMD X11 drivers for r600 (HD Series) and newer chipsets"
HOMEPAGE="http://ati.amd.com"
# 8.ble will be used for beta releases.
if [[ $(get_major_version) -gt 8 ]]; then
	ATI_URL="http://www2.ati.com/drivers/linux/"
	SRC_URI="${ATI_URL}/ati-driver-installer-${PV/./-}-x86.x86_64.run"
	FOLDER_PREFIX="common/"
else
	SRC_URI="https://launchpad.net/ubuntu/natty/+source/fglrx-installer/2:${PV}-0ubuntu1/+files/fglrx-installer_${PV}.orig.tar.gz"
	FOLDER_PREFIX=""
fi
IUSE="debug multilib"

LICENSE="AMD GPL-2 as-is"
KEYWORDS="~amd64 ~x86"
SLOT="1"

RDEPEND="<=x11-base/xorg-server-1.10.99
	!x11-drivers/ati-drivers:0
	!x11-apps/ati-drivers-extra
	>=app-admin/eselect-opengl-1.0.7
	x11-apps/xauth
	x11-libs/libX11
	x11-libs/libXext
	x11-libs/libXinerama
	x11-libs/libXrandr
	x11-libs/libXrender
	multilib? ( app-emulation/emul-linux-x86-opengl )
	!<x11-drivers/ati-userspace-${PV}
	!>x11-drivers/ati-userspace-${PV}"

DEPEND="${RDEPEND}
	app-misc/pax-utils
	app-portage/portage-utils
	sys-apps/findutils
	x11-proto/inputproto
	x11-proto/xf86miscproto
	x11-proto/xf86vidmodeproto
	x11-proto/xineramaproto
	x11-libs/libXtst"

EMULTILIB_PKG="true"

S="${WORKDIR}"

# QA Silencing
QA_TEXTRELS="
	usr/lib*/opengl/ati/lib/libGL.so.1.2
	usr/lib*/libatiadlxx.so
	usr/lib*/xorg/modules/glesx.so
	usr/lib*/libaticaldd.so
	usr/lib*/dri/fglrx_dri.so
"

QA_EXECSTACK="
	opt/bin/atiode
	opt/bin/amdcccle
	usr/lib*/opengl/ati/lib/libGL.so.1.2
	usr/lib*/dri/fglrx_dri.so
"

QA_WX_LOAD="
	usr/lib*/opengl/ati/lib/libGL.so.1.2
	usr/lib*/dri/fglrx_dri.so
"

QA_PRESTRIPPED="
	usr/lib\(32\|64\)\?/libXvBAW.so.1.0
	usr/lib\(32\|64\)\?/opengl/ati/lib/libGL.so.1.2
	usr/lib\(32\|64\)\?/opengl/ati/extensions/libglx.so
	usr/lib\(32\|64\)\?/xorg/modules/glesx.so
	usr/lib\(32\|64\)\?/libAMDXvBA.so.1.0
	usr/lib\(32\|64\)\?/libaticaldd.so
	usr/lib\(32\|64\)\?/dri/fglrx_dri.so
"

QA_SONAME="
	usr/lib\(32\|64\)\?/libatiadlxx.so
	usr/lib\(32\|64\)\?/libaticalcl.so
	usr/lib\(32\|64\)\?/libaticaldd.so
	usr/lib\(32\|64\)\?/libaticalrt.so
"

QA_DT_HASH="
	opt/bin/amdcccle
	opt/bin/aticonfig
	opt/bin/atiodcli
	opt/bin/atiode
	opt/bin/fglrxinfo
	opt/sbin/atieventsd
	usr/lib\(32\|64\)\?/libaticalcl.so
	usr/lib\(32\|64\)\?/libaticalrt.so
	usr/lib\(32\|64\)\?/libatiuki.so.1.0
	usr/lib\(32\|64\)\?/libatiadlxx.so
	usr/lib\(32\|64\)\?/libfglrx_dm.so.1.0
	usr/lib\(32\|64\)\?/libXvBAW.so.1.0
	usr/lib\(32\|64\)\?/libAMDXvBA.so.1.0
	usr/lib\(32\|64\)\?/xorg/modules/amdxmm.so
	usr/lib\(32\|64\)\?/xorg/modules/glesx.so
	usr/lib\(32\|64\)\?/xorg/modules/linux/libfglrxdrm.so
	usr/lib\(32\|64\)\?/xorg/modules/drivers/fglrx_drv.so
	usr/lib\(32\|64\)\?/libaticaldd.so
	usr/lib\(32\|64\)\?/dri/fglrx_dri.so
	usr/lib\(32\|64\)\?/opengl/ati/extensions/libglx.so
	usr/lib\(32\|64\)\?/opengl/ati/extensions/fglrx-libglx.so
	usr/lib\(32\|64\)\?/opengl/ati/lib/fglrx-libGL.so.1.2
	usr/lib\(32\|64\)\?/opengl/ati/lib/libGL.so.1.2
"

pkg_setup() {
	# get the xorg-server version and set BASE_DIR for that
	BASE_DIR="${S}/xpic"

	# amd64/x86
	if use amd64 ; then
		MY_BASE_DIR="${BASE_DIR}_64a"
		PKG_LIBDIR=lib64
		ARCH_DIR="${S}/arch/x86_64"
	else
		MY_BASE_DIR="${BASE_DIR}"
		PKG_LIBDIR=lib
		ARCH_DIR="${S}/arch/x86"
	fi
}

src_unpack() {
	if [[ $(get_major_version) -gt 8 ]]; then
		# Switching to a standard way to extract the files since otherwise no signature file
		# would be created
		local src="${DISTDIR}/${A}"
		sh "${src}" --extract "${S}"  2&>1 /dev/null
	else
		unpack ${A}
	fi
}

src_prepare() {
	# These are the userspace utilities that we also have source for.
	# We rebuild these later.
	rm \
		"${ARCH_DIR}"/usr/X11R6/bin/fgl_glxgears \
		|| die "bin rm failed"

        # amdcccle is shipped separately
        rm "${ARCH_DIR}"/usr/X11R6/bin/amdcccle || die "cannot rm amdcccle"

	# ACPI fixups
	sed -i \
		-e "s:/var/lib/xdm/authdir/authfiles/:/var/run/xauth/:" \
		-e "s:/var/lib/gdm/:/var/gdm/:" \
		"${S}/${FOLDER_PREFIX}etc/ati/authatieventsd.sh" \
		|| die "sed failed."

	# Since "who" is in coreutils, we're using that one instead of "finger".
	sed -i -e 's:finger:who:' \
		"${S}/${FOLDER_PREFIX}usr/share/doc/fglrx/examples/etc/acpi/ati-powermode.sh" \
		|| die "Replacing 'finger' with 'who' failed."
	# Adjust paths in the script from /usr/X11R6/bin/ to /opt/bin/ and
	# add function to detect default state.
	epatch "${FILESDIR}"/ati-powermode-opt-path-2.patch || die "Failed to epatch powermode-opt-path-2.patch"

	cd "${S}"
	mkdir extra || die "mkdir failed"
	cd extra
	unpack ./../${FOLDER_PREFIX}usr/src/ati/fglrx_sample_source.tgz
}

src_compile() {
	ebegin "Building fgl_glxgears"
	cd "${S}"/extra/fgl_glxgears
	# These extra libs/utils either have an Imakefile that does not
	# work very well without tweaking or a Makefile ignoring CFLAGS
	# and the like. We bypass those.

	# The -DUSE_GLU is needed to compile using nvidia headers
	# according to a comment in ati-drivers-extra-8.33.6.ebuild.
	"$(tc-getCC)" -o fgl_glxgears ${CFLAGS} ${LDFLAGS} -DUSE_GLU \
		-I"${S}"/${FOLDER_PREFIX}usr/include fgl_glxgears.c \
		-lGL -lGLU -lX11 -lm || die "fgl_glxgears build failed"
	eend $?
}

src_install() {
	# We can do two things here, and neither of them is very nice.

	# For direct rendering libGL has to be able to load one or more
	# dri modules (files ending in _dri.so, like fglrx_dri.so).
	# Gentoo's mesa looks for these files in the location specified by
	# LIBGL_DRIVERS_PATH or LIBGL_DRIVERS_DIR, then in the hardcoded
	# location /usr/$(get_libdir)/dri. Ati's libGL does the same
	# thing, but the hardcoded location is /usr/X11R6/lib/modules/dri
	# on x86 and amd64 32bit, /usr/X11R6/lib64/modules/dri on amd64
	# 64bit. So we can either put the .so files in that (unusual,
	# compared to "normal" mesa libGL) location or set
	# LIBGL_DRIVERS_PATH. We currently do the latter. See also bug
	# 101539.

	# The problem with this approach is that LIBGL_DRIVERS_PATH
	# *overrides* the default hardcoded location, it does not extend
	# it. So if ati-drivers is merged but a non-ati libGL is selected
	# and its hardcoded path does not match our LIBGL_DRIVERS_PATH
	# (because it changed in a newer mesa or because it was compiled
	# for a different set of multilib abis than we are) stuff breaks.

	# We create one file per ABI to work with "native" multilib, see
	# below.

	echo "COLON_SEPARATED=LIBGL_DRIVERS_PATH" > "${T}/03ati-colon-sep"
	doenvd "${T}/03ati-colon-sep" || die

	# All libraries that we have a 32 bit and 64 bit version of on
	# amd64 are installed in src_install-libs. Everything else
	# (including libraries only available in native 64bit on amd64)
	# goes in here.

	# There used to be some code here that tried to detect running
	# under a "native multilib" portage ((precursor of)
	# http://dev.gentoo.org/~kanaka/auto-multilib/). I removed that, it
	# should just work (only doing some duplicate work). --marienz
	if has_multilib_profile; then
		local OABI=${ABI}
		for ABI in $(get_install_abis); do
			src_install-libs
		done
		ABI=${OABI}
		unset OABI
	else
		src_install-libs
	fi

	# This is sorted by the order the files occur in the source tree.

	# X modules.
	exeinto /usr/$(get_libdir)/xorg/modules/drivers
	doexe "${MY_BASE_DIR}"/usr/X11R6/${PKG_LIBDIR}/modules/drivers/fglrx_drv.so
	exeinto /usr/$(get_libdir)/xorg/modules/linux
	doexe "${MY_BASE_DIR}"/usr/X11R6/${PKG_LIBDIR}/modules/linux/libfglrxdrm.so
	exeinto /usr/$(get_libdir)/xorg/modules
	doexe "${MY_BASE_DIR}"/usr/X11R6/${PKG_LIBDIR}/modules/{glesx.so,amdxmm.so}

	# Arch-specific files.
	# (s)bin.
	into /opt
	dosbin "${ARCH_DIR}"/usr/sbin/atieventsd
	# We cleaned out the compilable stuff in src_unpack
	dobin "${ARCH_DIR}"/usr/X11R6/bin/*

	# Common files.
	# etc.
	insinto /etc/ati
	exeinto /etc/ati
	# Everything except for the authatieventsd.sh script.
	doins ${FOLDER_PREFIX}etc/ati/{logo*,control,atiogl.xml,signature,amdpcsdb.default}
	doexe ${FOLDER_PREFIX}etc/ati/authatieventsd.sh

	# include.
	insinto /usr
	doins -r ${FOLDER_PREFIX}usr/include
	insinto /usr/include/X11/extensions

	# Just the atigetsysteminfo.sh script.
	into /usr
	dosbin ${FOLDER_PREFIX}usr/sbin/*

	# doc.
	dohtml -r ${FOLDER_PREFIX}usr/share/doc/fglrx

	doman ${FOLDER_PREFIX}usr/share/man/man8/atieventsd.8

	pushd ${FOLDER_PREFIX}usr/share/doc/fglrx/examples/etc/acpi > /dev/null

	exeinto /etc/acpi
	doexe ati-powermode.sh
	insinto /etc/acpi/events
	doins events/*

	popd > /dev/null

	# Done with the "source" tree. Install tools we rebuilt:
	dobin extra/fgl_glxgears/fgl_glxgears
	newdoc extra/fgl_glxgears/README README.fgl_glxgears

	# Gentoo-specific stuff:
	newinitd "${FILESDIR}"/atieventsd.init atieventsd
	echo 'ATIEVENTSDOPTS=""' > "${T}"/atieventsd.conf
	newconfd "${T}"/atieventsd.conf atieventsd

	# PowerXpress stuff
	local alllibdir="$(get_libdir)"
	use multilib && alllibdir="lib64 lib32"
	for libdir in ${alllibdir}
	do
		dosym /usr/${libdir}/opengl/xorg-x11/lib/libGL.so.1.2 \
			/usr/${libdir}/fglrx/libGL.so.1.2
		dosym ./libGL.so.1.2 /usr/${libdir}/fglrx/fglrx-libGL.so.1.2

		# Fixup xvba-video compilation
		dosym libXvBAW.so.1.0 /usr/${libdir}/libXvBAW.so
	done

}

src_install-libs() {
	if [[ "${ABI}" == "amd64" ]]; then
		local EX_BASE_DIR="${BASE_DIR}_64a"
		local pkglibdir=lib64
		local MY_ARCH_DIR="${S}/arch/x86_64"
	else
		local EX_BASE_DIR="${BASE_DIR}"
		local pkglibdir=lib
		local MY_ARCH_DIR="${S}/arch/x86"
	fi
	einfo "ati tree '${pkglibdir}' -> '$(get_libdir)' on system"

	local ATI_ROOT=/usr/$(get_libdir)/opengl/ati
	# To make sure we do not miss a spot when these change.
	local libmajor=1 libminor=2
	local libver=${libmajor}.${libminor}

	# The GLX libraries
	# (yes, this really is "lib" even on amd64/multilib --marienz)
	exeinto ${ATI_ROOT}/lib
	newexe "${MY_ARCH_DIR}"/usr/X11R6/${pkglibdir}/fglrx/fglrx-libGL.so.${libver} \
		libGL.so.${libver}
	dosym libGL.so.${libver} ${ATI_ROOT}/lib/libGL.so.${libmajor}
	dosym libGL.so.${libver} ${ATI_ROOT}/lib/libGL.so
	# PowerXpress stuff
	dosym /usr/$(get_libdir)/opengl/xorg-x11/lib/libGL.so.1.2 \
		${ATI_ROOT}/lib/FGL.renamed.libGL.so.1.2
	dosym ./libGL.so.1.2 ${ATI_ROOT}/lib/fglrx-libGL.so.1.2

	exeinto ${ATI_ROOT}/extensions
	doexe "${EX_BASE_DIR}"/usr/X11R6/${pkglibdir}/modules/extensions/fglrx/fglrx-libglx.so
	# PowerXpress stuff
	dosym /usr/$(get_libdir)/opengl/xorg-x11/extensions/libglx.so \
		${ATI_ROOT}/extensions/FGL.renamed.libglx.so
	dosym fglrx-libglx.so ${ATI_ROOT}/extensions/libglx.so

	# lib.
	exeinto /usr/$(get_libdir)
	# Everything except for the libGL.so installed in src_install-libs.
	doexe $(find "${MY_ARCH_DIR}"/usr/X11R6/${pkglibdir} \
		-maxdepth 1 -type f -name '*.so*' -not -name '*libGL.so*')
	insinto /usr/$(get_libdir)
	doins $(find "${MY_ARCH_DIR}"/usr/X11R6/${pkglibdir} \
		-maxdepth 1 -type f -not -name '*.so*')

	# DRI modules, installed into the path used by recent versions of mesa.
	exeinto /usr/$(get_libdir)/dri
	doexe "${MY_ARCH_DIR}"/usr/X11R6/${pkglibdir}/modules/dri/fglrx_dri.so

	# AMD Cal libraries
	exeinto /usr/$(get_libdir)
	doexe "${MY_ARCH_DIR}"/usr/${pkglibdir}/libati*.so*

	local envname="${T}"/04ati-dri-path
	if [[ -n ${ABI} ]]; then
		envname="${envname}-${ABI}"
	fi
	echo "LIBGL_DRIVERS_PATH=/usr/$(get_libdir)/dri" > "${envname}"
	doenvd "${envname}"

	# Silence the QA notice by creating missing soname symlinks
	for so in $(find "${D}"/usr/$(get_libdir) -maxdepth 1 -name *.so.[0-9].[0-9])
	do
		local soname=${so##*/}
		## let's keep also this alternative way ;)
		#dosym ${soname} /usr/$(get_libdir)/${soname%.[0-9]}
		dosym ${soname} /usr/$(get_libdir)/$(scanelf -qF "#f%S" ${so})
	done

}

pkg_postinst() {
	elog "To switch to ATI OpenGL, run \"eselect opengl set ati\""
	elog "To change your xorg.conf you can use the bundled \"aticonfig\""
	elog
	elog "You will have to source /etc/profile (or logout and back in) for dri"
	elog "to work, unless you previously had ati-drivers installed."

	"${ROOT}"/usr/bin/eselect opengl set --use-old ati
}

pkg_prerm() {
	"${ROOT}"/usr/bin/eselect opengl set --use-old xorg-x11
}

pkg_postrm() {
	"${ROOT}"/usr/bin/eselect opengl set --use-old xorg-x11
}