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

inherit eutils linux-mod multilib versionator toolchain-funcs

X86_PKG_V="pkg0"
AMD64_PKG_V="pkg2"
NV_V="${PV/1.0./1.0-}"
X86_NV_PACKAGE="NVIDIA-Linux-x86-${NV_V}"
AMD64_NV_PACKAGE="NVIDIA-Linux-x86_64-${NV_V}"
X86_FBSD_NV_PACKAGE="NVIDIA-FreeBSD-x86-${NV_V}"

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

DESCRIPTION="NVIDIA Linux X11 driver, GLX libraries, and utilities"
HOMEPAGE="http://www.nvidia.com/"
SRC_URI="x86? ( ftp://download.nvidia.com/XFree86/Linux-x86/${NV_V}/${X86_NV_PACKAGE}-${X86_PKG_V}.run )
	amd64? ( ftp://download.nvidia.com/XFree86/Linux-x86_64/${NV_V}/${AMD64_NV_PACKAGE}-${AMD64_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
	PKG_V="-${X86_PKG_V}"
	NV_PACKAGE="${X86_NV_PACKAGE}"
elif use amd64; then
	PKG_V="-${AMD64_PKG_V}"
	NV_PACKAGE="${AMD64_NV_PACKAGE}"
elif use x86-fbsd; then
	PKG_V=""
	NV_PACKAGE="${X86_FBSD_NV_PACKAGE}"
fi

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

LICENSE="NVIDIA"
SLOT="0"
KEYWORDS="-* ~amd64 ~x86"

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
	virtual/modutils
	!media-video/nvidia-kernel
	!media-video/nvidia-glx
	!media-video/nvidia-settings"
DEPEND="virtual/linux-sources
	virtual/x11
	>=x11-libs/gtk+-2"
export _POSIX2_VERSION="199209"

# On BSD userland it wants real make command
MAKE="make"

pkg_setup() {
	# NVIDIA KERNEL
	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

	# NVIDIA GLX
	check_xfree
	check_multilib
}

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

	# NVIDIA KERNEL
	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

	if ! use x86-fbsd; then
		cd ${WORKDIR}
		bash ${DISTDIR}/${NV_PACKAGE}${PKG_V}.run --extract-only
	else
		unpack ${A}
	fi

	# Add patches below, with a breif description.
	cd ${WORKDIR}/${NV_PACKAGE}${PKG_V}
	pwd
	# Any general patches should go here
	if ! use x86-fbsd; then
		# nVidia wants us to use nvidia-installer, removing warning.
		epatch ${NV_PATCH_PREFIX}-makefile.patch
	fi
	# Use the correct defines to make gtkglext build work
	epatch ${NV_PATCH_PREFIX}-defines.patch
	# Use some more sensible gl headers and make way for new glext.h
	epatch ${NV_PATCH_PREFIX}-glheader.patch

	cd ${S}
	# 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}-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
}


src_compile() {
	# KERNEL
	einfo "making nvidia kernel modules"
	linux-mod_src_compile

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

src_install() {
	# KERNEL and GLX
	cd ${WORKDIR}/${NV_PACKAGE}${PKG_V}
	install_kernel_modules
	install_glx_modules

	# NVIDIA-SETTINGS
	cd ${WORKDIR}/${NVS}-${NVS_V}
	install_nvidia_settings

	# NVIDIA-XCONFIG
	cd ${WORKDIR}/${NVX}-${NVX_V}
	install_nvidia_xconfig

	if ! use x86-fbsd; then
		cd ${WORKDIR}/${NV_PACKAGE}${PKG_V}/usr/share/doc 
		newdoc README.txt README
		dodoc NVIDIA_Changelog Copyrights XF86Config.sample
		dodoc nvidia-settings-user-guide.txt
		dohtml html/*
	else
		dodoc doc/README doc/XF86Config.sample doc/Copyrights doc/license.txt
		dohtml doc/html/*
	fi

	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
}

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
}

pkg_postinst() {
	linux-mod_pkg_postinst

	#switch to the nvidia implementation
	eselect opengl set 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
}

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
}

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
}

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_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
}

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 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"

	if use x86-fbsd; then
		# on FreeBSD everything is on obj/
		pkglibdir=obj
		usrpkglibdir=obj
		x11pkglibdir=obj
		drvdir=obj
		extdir=obj

		# don't ask me why the headers are there.. glxext.h is missing
		incdir=doc

		# on FreeBSD it has just .1 suffix
		sover=1
	fi

	# 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}

	if ! use x86-fbsd; then
		donvidia ${TLS_ROOT} ${usrpkglibdir}/tls/libnvidia-tls.so ${sover}
	fi

	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

#	if ! use x86-fbsd; then
#		# This cleans up the .la file.
#		# 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
#	fi

	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
}

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
}