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

# PAH: unified nvidia 
# PAH: combines nvidia-kernel/glx/settings/xconfig
# PAH: setting keyword -* ~x86 for now

inherit eutils linux-mod

# PAH: using pkg0 saves time since it does NOT contain
# PAH: precompiled kernel modules.
# PAH: remove references to x86-fbsd since not in iuse and
# PAH: causes QA warnings

PKG_V="pkg0"
NV_V="${PV/1.0./1.0-}"
X86_NV_PACKAGE="NVIDIA-Linux-x86-${NV_V}"
AMD64_NV_PACKAGE="NVIDIA-Linux-x86_64-${NV_V}"

# PAH: for nvidia settings and xconfig
NVS="nvidia-settings"
NVX="nvidia-xconfig"
NVS_V="1.0"
NVX_V="1.0"

DESCRIPTION="Linux kernel module for the NVIDIA X11 driver"
HOMEPAGE="http://www.nvidia.com/"
# PAH: amd64 dl from ftp too
# PAH: use only pkg0
# PAH: pull in settings and xconfig
SRC_URI="x86? ( ftp://download.nvidia.com/XFree86/Linux-x86/${NV_V}/${X86_NV_PACKAGE}-${PKG_V}.run )
	amd64? ( ftp://download.nvidia.com/XFree86/Linux-x86_64/${NV_V}/${AMD64_NV_PACKAGE}-${PKG_V}.run )
	ftp://download.nvidia.com/XFree86/${NVS}/${NVS}-${NVS_V}.tar.gz
	ftp://download.nvidia.com/XFree86/${NVX}/${NVX}-${NVX_V}.tar.gz"

if use x86; then
	NV_PACKAGE="${X86_NV_PACKAGE}"
elif use amd64; then
	NV_PACKAGE="${AMD64_NV_PACKAGE}"
fi

S="${WORKDIR}/${NV_PACKAGE}-${PKG_V}/usr/src/nv"

LICENSE="NVIDIA"
SLOT="0"
KEYWORDS="-* ~x86"
# PAH: add in glx uses
RESTRICT="nostrip multilib-pkg-force"
IUSE="dlloader"
PROVIDE="virtual/opengl"

RDEPEND="virtual/modutils
	|| ( virtual/x11 >=x11-base/xorg-server-0.99.1-r7 )
	|| ( virtual/x11 media-libs/mesa )
	app-admin/eselect-opengl
	!app-emulation/emul-linux-x86-nvidia"
# PAH: depends updated for nvidia-settings
DEPEND="virtual/linux-sources
	virtual/x11
	>=x11-libs/gtk+-2"
export _POSIX2_VERSION="199209"

mtrr_check() {
	ebegin "Checking for MTRR support"
	linux_chkconfig_present MTRR
	eend $?

	if [[ $? -ne 0 ]] ; then
		eerror "This version needs MTRR support for most chipsets!"
		eerror "Please enable MTRR support in your kernel config, found at:"
		eerror
		eerror "  Processor type and features"
		eerror "    [*] MTRR (Memory Type Range Register) support"
		eerror
		eerror "and recompile your kernel ..."
		die "MTRR support not detected!"
	fi
}

# PAH pulled in from nvidia-glx
check_xfree() {
	# This isn't necessary, true. But its about time people got the idea.
	if has_version "x11-base/xfree"; then
		eerror "Support for x11-base/xfree is deprecated. Upgrade to x11-base/xorg-x11."
	fi
}

check_multilib() {
	if use amd64 && has_multilib_profile && [ "${DEFAULT_ABI}" != "amd64" ]; then
		eerror "This ebuild doesn't currently support changing your defualt abi."
		die "Unexpected \${DEFAULT_ABI} = ${DEFAULT_ABI}"
	fi
}

pkg_setup() {
	linux-mod_pkg_setup
	MODULE_NAMES="nvidia(video:${S})"
	BUILD_PARAMS="IGNORE_CC_MISMATCH=yes V=1 SYSSRC=${KV_DIR} SYSOUT=${KV_OUT_DIR}"
	mtrr_check
	# PAH now check glx stuff (multilib check made into own function a la
	# check_xfree
	check_xfree
	check_multilib
}

src_unpack() {
	local NV_PATCH_PREFIX="${FILESDIR}/${PV}/NVIDIA_kernel-1.0-${PV##*.}"

	if [[ ${KV_MINOR} -eq 6 && ${KV_PATCH} -lt 7 ]] ; then
		echo
		ewarn "Your kernel version is ${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}"
		ewarn "This is not officially supported for ${P}. It is likely you"
		ewarn "will not be able to compile or use the kernel module."
		ewarn "It is recommended that you upgrade your kernel to a version >= 2.6.7"
		echo
		ewarn "DO NOT file bug reports for kernel versions less than 2.6.7 as they will be ignored."
	fi

	cd ${WORKDIR}
	bash ${DISTDIR}/${NV_PACKAGE}-${PKG_V}.run --extract-only
	# Add patches below, with a breif description.
	cd ${S}
	# Any general patches should go here

	# Patches from Zander goes here
	epatch ${NV_PATCH_PREFIX}-1423627.diff

	# Now any patches specific to the 2.6 kernel should go here
	if kernel_is 2 6 ; then
		einfo "Applying 2.6 kernel patches"
		# Fix calling of smp_processor_id() when preempt is enabled
		epatch ${NV_PATCH_PREFIX//8174/7167}-disable-preempt-on-smp_processor_id.patch
	fi

	# Quiet down warnings the user do not need to see
	sed -i \
		-e 's:-Wpointer-arith::g' \
		-e 's:-Wsign-compare::g' \
		${S}/Makefile.kbuild

	# If you set this then it's your own fault when stuff breaks :)
	[[ -n ${USE_CRAZY_OPTS} ]] && sed -i "s:-O:${CFLAGS}:" Makefile.*

	# If greater than 2.6.5 use M= instead of SUBDIR=
	cd ${S}; convert_to_m Makefile.kbuild

	# PAH: hack to clean up desktop file provided for nvidia-settings
	
	sed -i \
		-e 's:__.*__/::' \
		-e 's:\.png::' \
		${WORKDIR}/${NV_PACKAGE}-${PKG_V}/usr/share/applications/${NVS}.desktop
		
	# PAH: now unpack nvidia-settings and xconfig
	cd ${WORKDIR}
	unpack ${NVS}-${NVS_V}.tar.gz ${NVX}-${NVX_V}.tar.gz
}


# PAH: add function for compiling since settings and
# PAH: xconfig need to be done too
src_compile() {
	# PAH: first do the main compile
	einfo "making nvidia kernel modules"
	linux-mod_src_compile

	# PAH: now settings
	einfo "making nvidia settings"

	# PAH: change to nvidia-settings work dir
	cd ${WORKDIR}/${NVS}-${NVS_V}
	cd src/libXNVCtrl
	einfo "Building libXNVCtrl..."
	# This next voodoo is just to work around xmkmf's broken behaviour
	# after the Xorg move to /usr (or I think, as I have not messed
	# with it in ages).
	ln -snf ${ROOT}/usr/include/X11 include
	xmkmf -a || die "Running xmkmf failed!"
	make CCOPTIONS="${CFLAGS}" clean all || die "Building libXNVCtrl failed!"

	cd ../..
	einfo "Building nVidia-Settings..."
	emake CC=$(tc-getCC) || die "Failed to build nvidia-settings"
		
	# PAH: now xconfig	

	einfo "Building nVidia-xconfig..."
	cd ${WORKDIR}/${NVX}-${NVX_V}
	emake CC=$(tc-getCC) || die "Could not build nvidia-xconfig. Sorry :("

}	

# PAH: split off install procedures for now for ease of maintenance
# PAH: consolidate documentation install

src_install() {
	# PAH: install kernel and glx
	cd ${WORKDIR}/${NV_PACKAGE}-${PKG_V}
	install_kernel_modules
	install_glx_modules

	cd usr/share/doc 
	newdoc README.txt README
	dodoc NVIDIA_Changelog Copyrights XF86Config.sample
	dodoc nvidia-settings-user-guide.txt
	dohtml html/*

	cd ../man/man1
	doman nvidia-settings.1.gz nvidia-xconfig.1.gz

	# PAH: install nvidia-settings icon and desktop
	cd ../../
	doicon doc/${NVS}.png
	domenu applications/${NVS}.desktop
	
	# PAH: install settings
	cd ${WORKDIR}/${NVS}-${NVS_V}
	install_nvidia_settings

	# PAH: install nvidia-xconfig
	cd ${WORKDIR}/${NVX}-${NVX_V}
	install_nvidia_xconfig
	
}

install_kernel_modules() {
	linux-mod_src_install

	# Add the aliases
	sed -e 's:\${PACKAGE}:'${PF}':g' ${FILESDIR}/nvidia > ${WORKDIR}/nvidia
	insinto /etc/modules.d
	newins ${WORKDIR}/nvidia nvidia
}

install_glx_modules() {
	local MLTEST=$(type dyn_unpack)

	if [[ "${MLTEST/set_abi}" == "${MLTEST}" ]] && has_multilib_profile ; then
		local OABI=${ABI}
		for ABI in $(get_install_abis) ; do
			src_install-libs
		done
		ABI=${OABI}
		unset OABI
	elif use amd64 ; then
		src_install-libs lib32 $(get_multilibdir)
		src_install-libs lib $(get_libdir)

		rm -rf ${D}/usr/$(get_multilibdir)/opengl/nvidia/include
		rm -rf ${D}/usr/$(get_multilibdir)/opengl/nvidia/extensions
	else
		src_install-libs
	fi

	is_final_abi || return 0


	# nVidia want bug reports using this script
	exeinto /usr/bin
	doexe usr/bin/nvidia-bug-report.sh

}

install_nvidia_settings() {
	exeinto /usr/bin
	doexe nvidia-settings

	# Install libXNVCtrl and headers
	insinto "/usr/$(get_libdir)"
	doins src/libXNVCtrl/libXNVCtrl.a
	insinto /usr/include/NVCtrl
	doins src/libXNVCtrl/{NVCtrl,NVCtrlLib}.h
}

install_nvidia_xconfig() {
	exeinto /usr/bin
	doexe nvidia-xconfig
}

# PAH: more glx functions here
# Install nvidia library:
# the first parameter is the place where to install it
# the second paramis the base name of the library
# the third parameter is the provided soversion
donvidia() {
	dodir $1
	exeinto $1

	libname=$(basename $2)

	doexe $2.$3
	dosym ${libname}.$3 $1/${libname}

	[[ $3 != "1" ]] && dosym ${libname}.$3 $1/${libname}.1
}

src_install-libs() {
	local pkglibdir=lib
	local inslibdir=$(get_libdir)

	if [[ ${#} -eq 2 ]] ; then
		pkglibdir=${1}
		inslibdir=${2}
	elif has_multilib_profile && [[ ${ABI} == "x86" ]] ; then
		pkglibdir=lib32
	fi

	local usrpkglibdir=usr/${pkglibdir}
	local libdir=usr/X11R6/${pkglibdir}
	local drvdir=${libdir}/modules/drivers
	local extdir=${libdir}/modules/extensions
	local incdir=usr/include/GL
	local sover=${PV}
	local NV_ROOT="/usr/${inslibdir}/opengl/nvidia"
	local NO_TLS_ROOT="${NV_ROOT}/no-tls"
	local TLS_ROOT="${NV_ROOT}/tls"
	local X11_LIB_DIR="/usr/${inslibdir}/xorg"

	# PAH: remove x86-fbsd conditional

	# The GLX libraries
	donvidia ${NV_ROOT}/lib ${usrpkglibdir}/libGL.so ${sover}
	donvidia ${NV_ROOT}/lib ${usrpkglibdir}/libGLcore.so ${sover}

	dodir ${NO_TLS_ROOT}
	donvidia ${NO_TLS_ROOT} ${usrpkglibdir}/libnvidia-tls.so ${sover}

	donvidia ${TLS_ROOT} ${usrpkglibdir}/tls/libnvidia-tls.so ${sover}

	if want_tls ; then
		dosym ../tls/libnvidia-tls.so ${NV_ROOT}/lib
		dosym ../tls/libnvidia-tls.so.1 ${NV_ROOT}/lib
		dosym ../tls/libnvidia-tls.so.${sover} ${NV_ROOT}/lib
	else
		dosym ../no-tls/libnvidia-tls.so ${NV_ROOT}/lib
		dosym ../no-tls/libnvidia-tls.so.1 ${NV_ROOT}/lib
		dosym ../no-tls/libnvidia-tls.so.${sover} ${NV_ROOT}/lib
	fi

	# PAH: could someone tell me what this is for?
	
	# Not sure whether installing the .la file is neccessary;
	# this is adopted from the `nvidia' ebuild
	#local ver1=$(get_version_component_range 1)
	#local ver2=$(get_version_component_range 2)
	#local ver3=$(get_version_component_range 3)
	#sed -e "s:\${PV}:${PV}:"     \
	#	-e "s:\${ver1}:${ver1}:" \
	#	-e "s:\${ver2}:${ver2}:" \
	#	-e "s:\${ver3}:${ver3}:" \
	#	-e "s:\${libdir}:${inslibdir}:" \
	#	${FILESDIR}/libGL.la-r2 > ${D}/${NV_ROOT}/lib/libGL.la

	exeinto ${X11_LIB_DIR}/modules/drivers

	if use dlloader; then
		[[ -f ${drvdir}/nvidia_drv.so ]] && \
			doexe ${drvdir}/nvidia_drv.so
	else
		[[ -f ${drvdir}/nvidia_drv.o ]] && \
			doexe ${drvdir}/nvidia_drv.o
	fi

	insinto ${X11_LIB_DIR}
	[[ -f ${libdir}/libXvMCNVIDIA.a ]] && \
		doins ${libdir}/libXvMCNVIDIA.a
	exeinto ${X11_LIB_DIR}
	[[ -f ${libdir}/libXvMCNVIDIA.so.${PV} ]] && \
		doexe ${libdir}/libXvMCNVIDIA.so.${PV}

	exeinto ${NV_ROOT}/extensions
	[[ -f ${extdir}/libglx.so.${sover} ]] && \
		newexe ${extdir}/libglx.so.${sover} libglx.so

	# Includes
	insinto ${NV_ROOT}/include
	doins ${incdir}/*.h
}

pkg_preinst() {
	# Can we make up our minds ?!?!?
	local NV_D=${IMAGE:-${D}}

	if ! has_version x11-base/xorg-server ; then
		for dir in lib lib32 lib64 ; do
			if [[ -d ${NV_D}/usr/${dir}/xorg ]] ; then
				mv ${NV_D}/usr/${dir}/xorg/* ${NV_D}/usr/${dir}
				rmdir ${NV_D}/usr/${dir}/xorg
			fi
		done
	fi

	# The X module
	# Since we moved away from libs in /usr/X11R6 need to check this
	if has_version "<x11-base/xorg-x11-6.8.0-r4" || \
	   has_version "x11-base/xfree86" ; then
		mkdir -p ${NV_D}/usr/X11R6
		for dir in lib lib32 lib64 ; do
			[[ -d ${NV_D}/usr/${dir} ]] && mv ${NV_D}/usr/${dir} ${NV_D}/usr/X11R6
		done
	fi


	# Clean the dinamic libGL stuff's home to ensure
	# we dont have stale libs floating around
	if [[ -d ${ROOT}/usr/lib/opengl/nvidia ]] ; then
		rm -rf ${ROOT}/usr/lib/opengl/nvidia/*
	fi
	# Make sure we nuke the old nvidia-glx's env.d file
	if [[ -e ${ROOT}/etc/env.d/09nvidia ]] ; then
		rm -f ${ROOT}/etc/env.d/09nvidia
	fi
}

want_tls() {
	# For uclibc or anything non glibc, return false
	has_version sys-libs/glibc || return 1

	# Old versions of glibc were lt/no-tls only
	has_version '<sys-libs/glibc-2.3.2' && return 1

	local valid_chost="true"
	if use x86 ; then
		case ${CHOST/-*} in
			i486|i586|i686) ;;
			*) valid_chost="false"
		esac
	fi

	[[ ${valid_chost} == "false" ]] && return 1

	# If we've got nptl, we've got tls
	built_with_use sys-libs/glibc nptl && return 0

	# 2.3.5 turned off tls for linuxthreads glibc on i486 and i586
	if use x86 && has_version '>=sys-libs/glibc-2.3.5' ; then
		case ${CHOST/-*} in
			i486|i586) return 1 ;;
		esac
	fi

	# These versions built linuxthreads version to support tls, too
	has_version '>=sys-libs/glibc-2.3.4.20040619-r2' && return 0

	return 1
}

pkg_postinst() {
	linux-mod_pkg_postinst

	# PAH: add glx post inst stuff
	#switch to the nvidia implementation
	eselect opengl set --use-old nvidia

	echo
	einfo "To use the Nvidia GLX, run \"eselect opengl set nvidia\""
	echo
	einfo "nVidia have requested that any bug reports submitted have the"
	einfo "output of /usr/bin/nvidia-bug-report.sh included."
}

pkg_postrm() {
	eselect opengl set --use-old xorg-x11
}