# $Id$

PNAME="mesa"
PVER="11.0.4"
PBUILD="r2"

SPLIT_PACKAGES="mesa mesa-dev"

PCAT="media-libs"
HOMEPAGE="http://mesa3d.sourceforge.net/"

# hardcoded llvm version for libxatracker
LLVM_PVER="3.6.2"

MESA_DEPEND=">= dev-libs/expat-2.1
	>= dev-libs/libffi-3.2
	>= x11-libs/libX11-1.6
	>= x11-libs/libXext-1.3
	>= x11-libs/libXxf86vm-1.1
	>= x11-libs/libXi-1.7
	>= x11-libs/libXmu-1.1
	>= x11-libs/libdrm-2.4.61
	>= x11-libs/libICE-1
	>= x11-base/opengl-update-2.3
	>= x11-libs/libxcb-1.11
	>= x11-libs/libXfixes-5
	>= x11-libs/libXdamage-1
	>= x11-libs/libxshmfence-1.1
	>= sys-libs/libstdc++-5.2
	>= sys-fs/libudev-220
	>= sys-libs/llvm-libs-${LLVM_PVER}
	>= dev-libs/openssl-1.0.2"
#>= x11-libs/libXvMC-1
# >= x11-libs/libvdpau-1.1
#	>= x11-libs/libva-1.5

MESA_PROGS_DEPEND=">= virtual/glut"

# mesa-dev runtime deps
MESA_DEV_DEPEND=">= dev-libs/expat-dev-2.1
	>= dev-libs/libffi-dev-3.2
	>= x11-libs/libX11-dev-1.6
	>= x11-libs/libXext-dev-1.3
	>= x11-libs/libXxf86vm-dev-1.1
	>= x11-libs/libXi-dev-1.7
	>= x11-libs/libXmu-dev-1.1
	>= x11-libs/libdrm-dev-2.4.59
	>= x11-libs/libICE-dev-1
	>= x11-libs/libxcb-dev-1.11
	>= x11-libs/libXfixes-dev-5
	>= x11-libs/libXdamage-dev-1
	>= x11-libs/libxshmfence-dev-1.1
	>= sys-libs/libstdc++-dev-5.2
	>= sys-fs/libudev-dev-220
	>= dev-libs/openssl-dev-1.0.2"

SDEPEND="${MESA_DEPEND}
	${MESA_PROGS_DEPEND}
	>= dev-util/pkgconfig-0.25
	>= x11-misc/makedepend-1
	>= x11-libs/libXxf86vm-1.1
	>= x11-proto/glproto-1.4.17
	>= x11-proto/xf86driproto-2.1
	>= x11-proto/dri2proto-2.8
	>= x11-proto/dri3proto-1
	>= x11-proto/presentproto-1.0
	>= dev-lang/python-2.7
	>= sys-dev/llvm-${LLVM_PVER}
	${MESA_DEV_DEPEND}"

# must be set before the include of multilib!
EMUL_LINUX_32=true
sminclude xorg mtools multilib cleanutils
msetfeature "!check"

# must be set *after* the include of xorg!
SRCFILE="${PNAME}-${PVER/_/-}.tar.xz"
# libs SRCDIR
SRCDIR="${BUILDDIR}/${PNAME}-${PVER/_/-}"

# setup_dynamic_dri $impl
# impl may be classic or gallium atm
setup_dynamic_dri()
{
	local impl="$1"
	local i
	local abi

	[[ -z ${impl} ]] && die "missing dri implementation!"
	case ${impl} in
		classic|gallium) ;;
		*) die "unkown dri implementation '${impl}'!" ;;
	esac

	echo "settin up dynamic dri for a '${impl} implementation..."
	if [[ -z ${MULTILIB_ABIS} ]]
	then
		minstalldir /usr/$(mlibdir)/mesa/${impl} || die
		for i in ${BINDIR}/usr/$(mlibdir)/dri/*_dri.so
		do
			echo -n "  processing ${i}:"
			if [ -f ${i} -o -L ${i} ]
			then
				echo -n " moving"
				mv -vf ${i} ${BINDIR}/usr/$(mlibdir)/mesa/${impl} || die "moving ${i}"
			fi
		done
	else
		for abi in ${MULTILIB_ABIS}
		do
			[[ ${abi} = m32 ]] && ABI_LIBDIR="lib"
			[[ ${abi} = m64 ]] && ABI_LIBDIR="lib64"

			minstalldir /usr/$(mlibdir)/mesa/${impl} || die
			for i in ${BINDIR}/usr/$(mlibdir)/dri/*_dri.so
			do
				echo -n "  processing ${i}"
				if [ -f ${i} -o -L ${i} ]
				then
					echo -n " moving"
					mv -vf ${i} ${BINDIR}/usr/$(mlibdir)/mesa/${impl} || die "moving ${i}"
				fi
				echo " done"
			done
		done
	fi
}

SRC_URI=(
	ftp://ftp.freedesktop.org/pub/mesa/${PVER%_*}/${SRCFILE}
	mirror://${PNAME}/${SRCFILE}
)

#UP2DATE="updatecmd ftp://ftp.freedesktop.org/pub/mesa/current | highesttarball xz"
UP2DATE="updatecmd ftp://ftp.freedesktop.org/pub/mesa/ | grep '/[0-9].*' | sed 's:.*/\(.*\)/:\1:' | upsort_pipe"

split_info_mesa()
{
	DESCRIPTION="Mesa3D OpenGL graphics library."
	DEPEND="${MESA_DEPEND}"

	PROVIDE="virtual/opengl"
}

split_info_mesa-dev()
{
	DESCRIPTION="Dev package for mesa"
	DEPEND="== media-libs/mesa-${PVER}
		${MESA_DEV_DEPEND}"

	PROVIDE="virtual/opengl-dev"
}

src_prepare()
{
	munpack ${SRCFILE} || die

	# no debug code in the drives (gentoo)
	all-abis 'find src/mesa/drivers/dri -name *.[hc] -exec egrep -l "\#define\W+DO_DEBUG\W+1" {} \; | xargs --no-run-if-empty sed -i -re "s/\#define\W+DO_DEBUG\W+1/\#define DO_DEBUG 0/" ;'

	# get rid of glut includes
	all-abis rm -f include/GL/glut*h || die

	# fix an error in the libva detection
#	all-abis 'sed -i "s:libva = 0.31.1:libva >= 0.31.1:" configure.ac' || die

	mautoreconf || die
}

src_compile()
{
	# build without rtti and exeptions, fixes issues with llvm as well
	export CXXFLAGS="${CXXFLAGS} -fno-rtti -fno-exceptions -DNDEBUG"

	# texture-float has patent issues in non european contries
	# disable this feature if this legal concern is affected
	local myconf="--enable-texture-float"

	mconfigure \
		--with-dri-driverdir=/usr/'$(mlibdir)'/dri \
		--with-dri-drivers=i915,i965,r200,radeon,nouveau,swrast \
		--with-gallium-drivers=r300,r600,radeonsi,nouveau,svga,swrast \
		--with-egl-platforms=x11,drm \
		--disable-debug \
		--enable-glx-tls \
		--enable-asm \
		--enable-shared-glapi \
		--enable-egl \
		--enable-gles1 \
		--enable-gles2 \
		--enable-gbm \
		--enable-osmesa \
		--enable-xa \
		--enable-gallium-egl \
		--enable-gallium-llvm \
		--disable-vdpau \
		--enable-llvm-shared-libs \
		${myconf} \
		|| die
#		--enable-va \

#	# only build software renderer on multilib arches for 32Bit
#	if [[ ${ARCH} = x86_64 ]]
#	then
#		only-m32 "echo 'DRI_DIRS =' >> configs/autoconf" || die
#	fi

	mmake -j1 || die
}

src_install_mesa()
{
	mmake DESTDIR=${BINDIR} install || die

	# remove all la files
	find ${BINDIR} -name \*.la | xargs rm -fv

	# setup included for dynamic opengl
	# only target arch needed on multilib systems
	for abi in ${MULTILIB_ABIS}
	do
		[[ ${abi} = m32 ]] && ABI_LIBDIR="lib"
		[[ ${abi} = m64 ]] && ABI_LIBDIR="lib64"
		cd ${SRCDIR}-${abi}

		# setup dynamic opengl
		minstalldir /usr/$(mlibdir)/opengl/xorg/lib || die
		minstalldir /usr/$(mlibdir)/opengl/xorg/extensions || die

		local x
		for x in ${BINDIR}/usr/$(mlibdir)/lib{EGL,GL*,OpenVG}.so.*
		do
			if [ -f ${x} -o -L ${x} ]
			then
				mv -fv ${x} ${BINDIR}/usr/$(mlibdir)/opengl/xorg/lib || die "${x}"
			fi
		done

		# export LIBGL_DRIVER_PATH location.
		# we are using '/usr/lib/dri' as hardcoded location.
		# but nvidia and ati are using '/usr/$(mlibdir)/xorg/modules/dri'
		# LIBGL_DRIVER_PATH overwrites the hardcoded location and
		# if nvidia or ati driver are installed
		# the dri modules will never be found by libGL
		# use "LIBGL_DEBUG=verbose glxinfo" to check this issue
		minstalldir /etc/env.d || die
		MCONFIG=/etc/env.d/09mesa-${abi}
		mclearconfig || die
		maddconfig "LIBGL_DRIVERS_PATH=/usr/$(mlibdir)/dri" || die
	done

	zapmost ${BINDIR} \
		usr/$(mlibdir)/*.so.* \
		$([[ $(mlibdir) != lib ]] && echo 'usr/lib/*.so.*') \
		usr/$(mlibdir)/dri \
		$([[ $(mlibdir) != lib ]] && echo 'usr/lib/dri') \
		usr/$(mlibdir)/opengl \
		$([[ $(mlibdir) != lib ]] && echo 'usr/lib/opengl') \
		|| die
#		usr/$(mlibdir)/egl \
#		$([[ $(mlibdir) != lib ]] && echo 'usr/lib/egl')
}

src_install_mesa-dev()
{
	mmake DESTDIR=${BINDIR} install || die

	# remove all la files
	find ${BINDIR} -name \*.la | xargs rm -fv

	# setup included for dynamic opengl
	# only target arch needed on multilib systems
	minstalldir /usr/$(mlibdir)/opengl/xorg/include/GL || die
	for x in ${BINDIR}/usr/include/GL/{gl.h,glx.h,glext.h,glxext.h}
	do
		if [ -f ${x} -o -L ${x} ]
		then
			mv -fv ${x} ${BINDIR}/usr/$(mlibdir)/opengl/xorg/include/GL || die "${x}"
		fi
	done
	for x in ${BINDIR}/usr/include/{EGL,GLES*,VG,KHR}
	do
		if [ -d ${x} ]
		then
			mv -fv ${x} ${BINDIR}/usr/$(mlibdir)/opengl/xorg/include || die "${x}"
		fi
	done

	for abi in ${MULTILIB_ABIS}
	do
		[[ ${abi} = m32 ]] && ABI_LIBDIR="lib"
		[[ ${abi} = m64 ]] && ABI_LIBDIR="lib64"
		cd ${SRCDIR}-${abi}

		# setup dynamic opengl
		minstalldir /usr/$(mlibdir)/opengl/xorg/lib || die
		minstalldir /usr/$(mlibdir)/opengl/xorg/extensions || die

		local x
		for x in ${BINDIR}/usr/$(mlibdir)/lib{EGL,GL*,OpenVG}.{la,a,so}
		do
			if [ -f ${x} -o -L ${x} ]
			then
				mv -fv ${x} ${BINDIR}/usr/$(mlibdir)/opengl/xorg/lib || die "${x}"
			fi
		done
	done

	# includes in mesa package
	rm -r ${BINDIR}/usr/$(mlibdir)/*.so.* || die
	mdelete -r /usr/$(mlibdir)/dri || die
#	mdelete -r /usr/$(mlibdir)/egl || die
	if [[ $(mlibdir) != lib ]]
	then
		rm -r ${BINDIR}/usr/lib/*.so.* || die
		mdelete -r /usr/lib/dri || die
#		mdelete -r /usr/lib/egl || die
	fi
}

postinstall_mesa()
{
	${MROOT}/usr/sbin/dri-update --use-old gallium
}