commit:     7aaaa1436a69fc2c653457f1b66342b77abb0281
Author:     Felix Janda <felix.janda <AT> posteo <DOT> de>
AuthorDate: Sun Feb 22 16:32:33 2015 +0000
Commit:     Anthony G. Basile <blueness <AT> gentoo <DOT> org>
CommitDate: Mon Feb 23 12:55:17 2015 +0000
URL:        
http://sources.gentoo.org/gitweb/?p=proj/hardened-dev.git;a=commit;h=7aaaa143

media-libs/mesa: bump to 10.3.7-r1

because of block on ~amd64 with app-admin/eselect-opengl cannot
use -r99

Signed-off-by: Anthony G. Basile <blueness <AT> gentoo.org>

---
 .../mesa/files/mesa-10.3.7-dont-use-clrsb.patch    |  36 ++
 media-libs/mesa/mesa-10.3.7-r1.ebuild              | 538 +++++++++++++++++++++
 2 files changed, 574 insertions(+)

diff --git a/media-libs/mesa/files/mesa-10.3.7-dont-use-clrsb.patch 
b/media-libs/mesa/files/mesa-10.3.7-dont-use-clrsb.patch
new file mode 100644
index 0000000..c38757d
--- /dev/null
+++ b/media-libs/mesa/files/mesa-10.3.7-dont-use-clrsb.patch
@@ -0,0 +1,36 @@
+From 32e98e8ef06f0bb6ad55f9fb5858be77c03367b0 Mon Sep 17 00:00:00 2001
+From: Matt Turner <[email protected]>
+Date: Mon, 2 Feb 2015 17:26:49 -0800
+Subject: [PATCH] gallium/util: Don't use __builtin_clrsb in util_last_bit().
+
+Unclear circumstances lead to undefined symbols on x86.
+
+Bugzilla: https://bugs.gentoo.org/show_bug.cgi?id=536916
+Cc: [email protected]
+Reviewed-by: Ilia Mirkin <[email protected]>
+---
+ src/gallium/auxiliary/util/u_math.h | 4 ----
+ 1 file changed, 4 deletions(-)
+
+diff --git a/src/gallium/auxiliary/util/u_math.h 
b/src/gallium/auxiliary/util/u_math.h
+index 19c7343..ca6d0f1 100644
+--- a/src/gallium/auxiliary/util/u_math.h
++++ b/src/gallium/auxiliary/util/u_math.h
+@@ -561,14 +561,10 @@ util_last_bit(unsigned u)
+ static INLINE unsigned
+ util_last_bit_signed(int i)
+ {
+-#if defined(__GNUC__) && ((__GNUC__ * 100 + __GNUC_MINOR__) >= 407) && 
!defined(__INTEL_COMPILER)
+-   return 31 - __builtin_clrsb(i);
+-#else
+    if (i >= 0)
+       return util_last_bit(i);
+    else
+       return util_last_bit(~(unsigned)i);
+-#endif
+ }
+ 
+ /* Destructively loop over all of the bits in a mask as in:
+-- 
+2.0.4
+

diff --git a/media-libs/mesa/mesa-10.3.7-r1.ebuild 
b/media-libs/mesa/mesa-10.3.7-r1.ebuild
new file mode 100644
index 0000000..20e6d22
--- /dev/null
+++ b/media-libs/mesa/mesa-10.3.7-r1.ebuild
@@ -0,0 +1,538 @@
+# Copyright 1999-2015 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+# $Header: /var/cvsroot/gentoo-x86/media-libs/mesa/mesa-10.3.7-r1.ebuild,v 1.4 
2015/02/20 11:16:40 ago Exp $
+
+EAPI=5
+
+EGIT_REPO_URI="git://anongit.freedesktop.org/mesa/mesa"
+
+if [[ ${PV} = 9999* ]]; then
+       GIT_ECLASS="git-r3"
+       EXPERIMENTAL="true"
+fi
+
+PYTHON_COMPAT=( python{2_6,2_7} )
+
+inherit base autotools multilib multilib-minimal flag-o-matic \
+       python-any-r1 toolchain-funcs pax-utils ${GIT_ECLASS}
+
+OPENGL_DIR="xorg-x11"
+
+MY_PN="${PN/m/M}"
+MY_P="${MY_PN}-${PV/_/-}"
+MY_SRC_P="${MY_PN}Lib-${PV/_/-}"
+
+FOLDER="${PV/.0/}"
+
+DESCRIPTION="OpenGL-like graphic library for Linux"
+HOMEPAGE="http://mesa3d.sourceforge.net/";
+
+#SRC_PATCHES="mirror://gentoo/${P}-gentoo-patches-01.tar.bz2"
+if [[ $PV = 9999* ]]; then
+       SRC_URI="${SRC_PATCHES}"
+else
+       
SRC_URI="ftp://ftp.freedesktop.org/pub/mesa/${FOLDER}/${MY_SRC_P}.tar.bz2
+               ${SRC_PATCHES}"
+fi
+
+# The code is MIT/X11.
+# GLES[2]/gl[2]{,ext,platform}.h are SGI-B-2.0
+LICENSE="MIT SGI-B-2.0"
+SLOT="0"
+KEYWORDS="amd64 ~arm ~mips ppc x86"
+
+INTEL_CARDS="i915 i965 ilo intel"
+RADEON_CARDS="r100 r200 r300 r600 radeon radeonsi"
+VIDEO_CARDS="${INTEL_CARDS} ${RADEON_CARDS} freedreno nouveau vmware"
+for card in ${VIDEO_CARDS}; do
+       IUSE_VIDEO_CARDS+=" video_cards_${card}"
+done
+
+IUSE="${IUSE_VIDEO_CARDS}
+       bindist +classic debug +dri3 +egl +gallium +gbm gles1 gles2 +llvm +nptl
+       opencl openvg osmesa pax_kernel openmax pic r600-llvm-compiler selinux
+       +udev vdpau wayland xvmc xa kernel_FreeBSD kernel_linux"
+
+REQUIRED_USE="
+       llvm?   ( gallium )
+       openvg? ( egl gallium )
+       opencl? (
+               gallium
+               llvm
+               video_cards_r600? ( r600-llvm-compiler )
+               video_cards_radeon? ( r600-llvm-compiler )
+               video_cards_radeonsi? ( r600-llvm-compiler )
+       )
+       openmax? ( gallium )
+       gles1?  ( egl )
+       gles2?  ( egl )
+       r600-llvm-compiler? ( gallium llvm || ( video_cards_r600 
video_cards_radeonsi video_cards_radeon ) )
+       wayland? ( egl gbm )
+       xa?  ( gallium )
+       video_cards_freedreno?  ( gallium )
+       video_cards_intel?  ( || ( classic gallium ) )
+       video_cards_i915?   ( || ( classic gallium ) )
+       video_cards_i965?   ( classic )
+       video_cards_ilo?    ( gallium )
+       video_cards_nouveau? ( || ( classic gallium ) )
+       video_cards_radeon? ( || ( classic gallium ) )
+       video_cards_r100?   ( classic )
+       video_cards_r200?   ( classic )
+       video_cards_r300?   ( gallium )
+       video_cards_r600?   ( gallium )
+       video_cards_radeonsi?   ( gallium llvm )
+       video_cards_vmware? ( gallium )
+       ${PYTHON_REQUIRED_USE}
+"
+
+LIBDRM_DEPSTRING=">=x11-libs/libdrm-2.4.56"
+# keep correct libdrm and dri2proto dep
+# keep blocks in rdepend for binpkg
+RDEPEND="
+       !<x11-base/xorg-server-1.7
+       !<=x11-proto/xf86driproto-2.0.3
+       abi_x86_32? ( !app-emulation/emul-linux-x86-opengl[-abi_x86_32(-)] )
+       classic? ( app-admin/eselect-mesa )
+       gallium? ( app-admin/eselect-mesa )
+       >=app-admin/eselect-opengl-1.2.7
+       udev? ( kernel_linux? ( >=virtual/libudev-215:=[${MULTILIB_USEDEP}] ) )
+       >=dev-libs/expat-2.1.0-r3:=[${MULTILIB_USEDEP}]
+       >=x11-libs/libX11-1.6.2:=[${MULTILIB_USEDEP}]
+       >=x11-libs/libxshmfence-1.1:=[${MULTILIB_USEDEP}]
+       >=x11-libs/libXdamage-1.1.4-r1:=[${MULTILIB_USEDEP}]
+       >=x11-libs/libXext-1.3.2:=[${MULTILIB_USEDEP}]
+       >=x11-libs/libXxf86vm-1.1.3:=[${MULTILIB_USEDEP}]
+       >=x11-libs/libxcb-1.9.3:=[${MULTILIB_USEDEP}]
+       llvm? (
+               video_cards_radeonsi? ( || (
+                       >=dev-libs/elfutils-0.155-r1:=[${MULTILIB_USEDEP}]
+                       >=dev-libs/libelf-0.8.13-r2:=[${MULTILIB_USEDEP}]
+                       ) )
+               video_cards_r600? ( || (
+                       >=dev-libs/elfutils-0.155-r1:=[${MULTILIB_USEDEP}]
+                       >=dev-libs/libelf-0.8.13-r2:=[${MULTILIB_USEDEP}]
+                       ) )
+               !video_cards_r600? (
+                       video_cards_radeon? ( || (
+                               
>=dev-libs/elfutils-0.155-r1:=[${MULTILIB_USEDEP}]
+                               
>=dev-libs/libelf-0.8.13-r2:=[${MULTILIB_USEDEP}]
+                               ) )
+               )
+               >=sys-devel/llvm-3.3-r3:=[${MULTILIB_USEDEP}]
+               video_cards_radeonsi? ( 
>=sys-devel/llvm-3.4.2:=[${MULTILIB_USEDEP}] )
+       )
+       opencl? (
+                               app-admin/eselect-opencl
+                               dev-libs/libclc
+                       )
+       openmax? ( >=media-libs/libomxil-bellagio-0.9.3:=[${MULTILIB_USEDEP}] )
+       vdpau? ( >=x11-libs/libvdpau-0.7:=[${MULTILIB_USEDEP}] )
+       wayland? ( >=dev-libs/wayland-1.2.0:=[${MULTILIB_USEDEP}] )
+       xvmc? ( >=x11-libs/libXvMC-1.0.8:=[${MULTILIB_USEDEP}] )
+       
${LIBDRM_DEPSTRING}[video_cards_freedreno?,video_cards_nouveau?,video_cards_vmware?,${MULTILIB_USEDEP}]
+"
+for card in ${INTEL_CARDS}; do
+       RDEPEND="${RDEPEND}
+               video_cards_${card}? ( ${LIBDRM_DEPSTRING}[video_cards_intel] )
+       "
+done
+
+for card in ${RADEON_CARDS}; do
+       RDEPEND="${RDEPEND}
+               video_cards_${card}? ( ${LIBDRM_DEPSTRING}[video_cards_radeon] )
+       "
+done
+
+DEPEND="${RDEPEND}
+       ${PYTHON_DEPS}
+       llvm? (
+               r600-llvm-compiler? ( sys-devel/llvm[video_cards_radeon] )
+               video_cards_radeonsi? ( sys-devel/llvm[video_cards_radeon] )
+       )
+       opencl? (
+                               >=sys-devel/llvm-3.4.2:=[${MULTILIB_USEDEP}]
+                               >=sys-devel/clang-3.4.2:=[${MULTILIB_USEDEP}]
+                               >=sys-devel/gcc-4.6
+       )
+       sys-devel/bison
+       sys-devel/flex
+       sys-devel/gettext
+       virtual/pkgconfig
+       >=x11-proto/dri2proto-2.8-r1:=[${MULTILIB_USEDEP}]
+       dri3? (
+               >=x11-proto/dri3proto-1.0:=[${MULTILIB_USEDEP}]
+               >=x11-proto/presentproto-1.0:=[${MULTILIB_USEDEP}]
+       )
+       >=x11-proto/glproto-1.4.16-r1:=[${MULTILIB_USEDEP}]
+       >=x11-proto/xextproto-7.2.1-r1:=[${MULTILIB_USEDEP}]
+       >=x11-proto/xf86driproto-2.1.1-r1:=[${MULTILIB_USEDEP}]
+       >=x11-proto/xf86vidmodeproto-2.3.1-r1:=[${MULTILIB_USEDEP}]
+"
+
+S="${WORKDIR}/${MY_P}"
+EGIT_CHECKOUT_DIR=${S}
+
+# It is slow without texrels, if someone wants slow
+# mesa without texrels +pic use is worth the shot
+QA_EXECSTACK="usr/lib*/opengl/xorg-x11/lib/libGL.so*"
+QA_WX_LOAD="usr/lib*/opengl/xorg-x11/lib/libGL.so*"
+
+# Think about: ggi, fbcon, no-X configs
+
+pkg_setup() {
+       # workaround toc-issue wrt #386545
+       use ppc64 && append-flags -mminimal-toc
+
+       # warning message for bug 459306
+       if use llvm && has_version sys-devel/llvm[!debug=]; then
+               ewarn "Mismatch between debug USE flags in media-libs/mesa and 
sys-devel/llvm"
+               ewarn "detected! This can cause problems. For details, see bug 
459306."
+       fi
+
+       python-any-r1_pkg_setup
+}
+
+src_unpack() {
+       default
+       [[ $PV = 9999* ]] && git-r3_src_unpack
+}
+
+src_prepare() {
+       # apply patches
+       if [[ ${PV} != 9999* && -n ${SRC_PATCHES} ]]; then
+               EPATCH_FORCE="yes" \
+               EPATCH_SOURCE="${WORKDIR}/patches" \
+               EPATCH_SUFFIX="patch" \
+               epatch
+       fi
+
+       epatch "${FILESDIR}"/${PN}-10.3.7-dont-use-clrsb.patch
+
+       # relax the requirement that r300 must have llvm, bug 380303
+       epatch "${FILESDIR}"/${PN}-10.2-dont-require-llvm-for-r300.patch
+
+       # for musl
+       epatch "${FILESDIR}"/${PN}-9.1.6-fpclassify.patch
+       epatch "${FILESDIR}"/${PN}-10-pthread.patch
+
+       # fix for hardened pax_kernel, bug 240956
+       [[ ${PV} != 9999* ]] && epatch "${FILESDIR}"/glx_ro_text_segm.patch
+
+       # Solaris needs some recent POSIX stuff in our case
+       if [[ ${CHOST} == *-solaris* ]] ; then
+               sed -i -e "s/-DSVR4/-D_POSIX_C_SOURCE=200112L/" configure.ac || 
die
+       fi
+
+       base_src_prepare
+
+       eautoreconf
+       multilib_copy_sources
+}
+
+multilib_src_configure() {
+       local myconf
+
+       if use classic; then
+       # Configurable DRI drivers
+               driver_enable swrast
+
+       # Intel code
+               driver_enable video_cards_i915 i915
+               driver_enable video_cards_i965 i965
+               if ! use video_cards_i915 && \
+                       ! use video_cards_i965; then
+                       driver_enable video_cards_intel i915 i965
+               fi
+
+               # Nouveau code
+               driver_enable video_cards_nouveau nouveau
+
+               # ATI code
+               driver_enable video_cards_r100 radeon
+               driver_enable video_cards_r200 r200
+               if ! use video_cards_r100 && \
+                               ! use video_cards_r200; then
+                       driver_enable video_cards_radeon radeon r200
+               fi
+       fi
+
+       if use egl; then
+               myconf+="--with-egl-platforms=x11$(use wayland && echo 
",wayland")$(use gbm && echo ",drm") "
+       fi
+
+       if use gallium; then
+               myconf+="
+                       $(use_enable llvm gallium-llvm)
+                       $(use_enable openvg)
+                       $(use_enable openvg gallium-egl)
+                       $(use_enable openmax omx)
+                       $(use_enable r600-llvm-compiler)
+                       $(use_enable vdpau)
+                       $(use_enable xa)
+                       $(use_enable xvmc)
+               "
+               gallium_enable swrast
+               gallium_enable video_cards_vmware svga
+               gallium_enable video_cards_nouveau nouveau
+               gallium_enable video_cards_i915 i915
+               gallium_enable video_cards_ilo ilo
+               if ! use video_cards_i915 && \
+                       ! use video_cards_i965; then
+                       gallium_enable video_cards_intel i915
+               fi
+
+               gallium_enable video_cards_r300 r300
+               gallium_enable video_cards_r600 r600
+               gallium_enable video_cards_radeonsi radeonsi
+               if ! use video_cards_r300 && \
+                               ! use video_cards_r600; then
+                       gallium_enable video_cards_radeon r300 r600
+               fi
+
+               gallium_enable video_cards_freedreno freedreno
+               # opencl stuff
+               if use opencl; then
+                       myconf+="
+                               $(use_enable opencl)
+                               
--with-opencl-libdir="${EPREFIX}/usr/$(get_libdir)/OpenCL/vendors/mesa"
+                               --with-clang-libdir="${EPREFIX}/usr/lib"
+                               "
+               fi
+       fi
+
+       # x86 hardened pax_kernel needs glx-rts, bug 240956
+       if use pax_kernel; then
+               myconf+="
+                       $(use_enable x86 glx-rts)
+               "
+       fi
+
+       # on abi_x86_32 hardened we need to have asm disable  
+       if [[ ${ABI} == x86* ]] && use pic; then
+               myconf+=" --disable-asm"
+       fi
+
+       # build fails with BSD indent, bug #428112
+       use userland_GNU || export INDENT=cat
+
+       econf \
+               --enable-dri \
+               --enable-glx \
+               --enable-shared-glapi \
+               $(use_enable !bindist texture-float) \
+               $(use_enable debug) \
+               $(use_enable dri3) \
+               $(use_enable egl) \
+               $(use_enable gbm) \
+               $(use_enable gles1) \
+               $(use_enable gles2) \
+               $(use_enable nptl glx-tls) \
+               $(use_enable osmesa) \
+               $(use_enable !udev sysfs) \
+               --enable-llvm-shared-libs \
+               --with-dri-drivers=${DRI_DRIVERS} \
+               --with-gallium-drivers=${GALLIUM_DRIVERS} \
+               PYTHON2="${PYTHON}" \
+               ${myconf}
+}
+
+multilib_src_install() {
+       emake install DESTDIR="${D}"
+
+       # Move libGL and others from /usr/lib to /usr/lib/opengl/blah/lib
+       # because user can eselect desired GL provider.
+       ebegin "Moving libGL and friends for dynamic switching"
+               local x
+               local gl_dir="/usr/$(get_libdir)/opengl/${OPENGL_DIR}/"
+               dodir ${gl_dir}/{lib,extensions,include/GL}
+               for x in 
"${ED}"/usr/$(get_libdir)/lib{EGL,GL*,OpenVG}.{la,a,so*}; do
+                       if [ -f ${x} -o -L ${x} ]; then
+                               mv -f "${x}" "${ED}${gl_dir}"/lib \
+                                       || die "Failed to move ${x}"
+                       fi
+               done
+               for x in "${ED}"/usr/include/GL/{gl.h,glx.h,glext.h,glxext.h}; 
do
+                       if [ -f ${x} -o -L ${x} ]; then
+                               mv -f "${x}" "${ED}${gl_dir}"/include/GL \
+                                       || die "Failed to move ${x}"
+                       fi
+               done
+               for x in "${ED}"/usr/include/{EGL,GLES*,VG,KHR}; do
+                       if [ -d ${x} ]; then
+                               mv -f "${x}" "${ED}${gl_dir}"/include \
+                                       || die "Failed to move ${x}"
+                       fi
+               done
+       eend $?
+
+       if use classic || use gallium; then
+                       ebegin "Moving DRI/Gallium drivers for dynamic 
switching"
+                       local gallium_drivers=( i915_dri.so i965_dri.so 
r300_dri.so r600_dri.so swrast_dri.so )
+                       keepdir /usr/$(get_libdir)/dri
+                       dodir /usr/$(get_libdir)/mesa
+                       for x in ${gallium_drivers[@]}; do
+                               if [ -f "$(get_libdir)/gallium/${x}" ]; then
+                                       mv -f 
"${ED}/usr/$(get_libdir)/dri/${x}" 
"${ED}/usr/$(get_libdir)/dri/${x/_dri.so/g_dri.so}" \
+                                               || die "Failed to move ${x}"
+                               fi
+                       done
+                       if use classic; then
+                               emake -C "${BUILD_DIR}/src/mesa/drivers/dri" 
DESTDIR="${D}" install
+                       fi
+                       for x in "${ED}"/usr/$(get_libdir)/dri/*.so; do
+                               if [ -f ${x} -o -L ${x} ]; then
+                                       mv -f "${x}" "${x/dri/mesa}" \
+                                               || die "Failed to move ${x}"
+                               fi
+                       done
+                       pushd "${ED}"/usr/$(get_libdir)/dri || die "pushd 
failed"
+                       ln -s ../mesa/*.so . || die "Creating symlink failed"
+                       # remove symlinks to drivers known to eselect
+                       for x in ${gallium_drivers[@]}; do
+                               if [ -f ${x} -o -L ${x} ]; then
+                                       rm "${x}" || die "Failed to remove ${x}"
+                               fi
+                       done
+                       popd
+               eend $?
+       fi
+       if use opencl; then
+               ebegin "Moving Gallium/Clover OpenCL implementation for dynamic 
switching"
+               local cl_dir="/usr/$(get_libdir)/OpenCL/vendors/mesa"
+               dodir ${cl_dir}/{lib,include}
+               if [ -f "${ED}/usr/$(get_libdir)/libOpenCL.so" ]; then
+                       mv -f "${ED}"/usr/$(get_libdir)/libOpenCL.so* \
+                       "${ED}"${cl_dir}
+               fi
+               if [ -f "${ED}/usr/include/CL/opencl.h" ]; then
+                       mv -f "${ED}"/usr/include/CL \
+                       "${ED}"${cl_dir}/include
+               fi
+               eend $?
+       fi
+
+       if use openmax; then
+               echo "XDG_DATA_DIRS=\"${EPREFIX}/usr/share/mesa/xdg\"" > 
"${T}/99mesaxdgomx"
+               doenvd "${T}"/99mesaxdgomx
+               keepdir /usr/share/mesa/xdg
+       fi
+}
+
+multilib_src_install_all() {
+       prune_libtool_files --all
+       einstalldocs
+
+       if use !bindist; then
+               dodoc docs/patents.txt
+       fi
+
+       # Install config file for eselect mesa
+       insinto /usr/share/mesa
+       newins "${FILESDIR}/eselect-mesa.conf.9.2" eselect-mesa.conf
+}
+
+multilib_src_test() {
+       if use llvm; then
+               local llvm_tests='lp_test_arit lp_test_arit lp_test_blend 
lp_test_blend lp_test_conv lp_test_conv lp_test_format lp_test_format 
lp_test_printf lp_test_printf'
+               pushd src/gallium/drivers/llvmpipe >/dev/null || die
+               emake ${llvm_tests}
+               pax-mark m ${llvm_tests}
+               popd >/dev/null || die
+       fi
+       emake check
+}
+
+pkg_postinst() {
+       # Switch to the xorg implementation.
+       echo
+       eselect opengl set --use-old ${OPENGL_DIR}
+
+       # switch to xorg-x11 and back if necessary, bug #374647 comment 11
+       OLD_IMPLEM="$(eselect opengl show)"
+       if [[ ${OPENGL_DIR}x != ${OLD_IMPLEM}x ]]; then
+               eselect opengl set ${OPENGL_DIR}
+               eselect opengl set ${OLD_IMPLEM}
+       fi
+
+       # Select classic/gallium drivers
+       if use classic || use gallium; then
+               eselect mesa set --auto
+       fi
+
+       # Switch to mesa opencl
+       if use opencl; then
+               eselect opencl set --use-old ${PN}
+       fi
+
+       # run omxregister-bellagio to make the OpenMAX drivers known system-wide
+       if use openmax; then
+               ebegin "Registering OpenMAX drivers"
+               
BELLAGIO_SEARCH_PATH="${EPREFIX}/usr/$(get_libdir)/libomxil-bellagio0" \
+                       
OMX_BELLAGIO_REGISTRY=${EPREFIX}/usr/share/mesa/xdg/.omxregister \
+                       omxregister-bellagio
+               eend $?
+       fi
+
+       # warn about patent encumbered texture-float
+       if use !bindist; then
+               elog "USE=\"bindist\" was not set. Potentially patent 
encumbered code was"
+               elog "enabled. Please see patents.txt for an explanation."
+       fi
+
+       local using_radeon r_flag
+       for r_flag in ${RADEON_CARDS}; do
+               if use video_cards_${r_flag}; then
+                       using_radeon=1
+                       break
+               fi
+       done
+
+       if [[ ${using_radeon} = 1 ]] && ! has_version media-libs/libtxc_dxtn; 
then
+               elog "Note that in order to have full S3TC support, it is 
necessary to install"
+               elog "media-libs/libtxc_dxtn as well. This may be necessary to 
get nice"
+               elog "textures in some apps, and some others even require this 
to run."
+       fi
+}
+
+pkg_prerm() {
+       if use openmax; then
+               rm "${EPREFIX}"/usr/share/mesa/xdg/.omxregister
+       fi
+}
+
+# $1 - VIDEO_CARDS flag
+# other args - names of DRI drivers to enable
+# TODO: avoid code duplication for a more elegant implementation
+driver_enable() {
+       case $# in
+               # for enabling unconditionally
+               1)
+                       DRI_DRIVERS+=",$1"
+                       ;;
+               *)
+                       if use $1; then
+                               shift
+                               for i in $@; do
+                                       DRI_DRIVERS+=",${i}"
+                               done
+                       fi
+                       ;;
+       esac
+}
+
+gallium_enable() {
+       case $# in
+               # for enabling unconditionally
+               1)
+                       GALLIUM_DRIVERS+=",$1"
+                       ;;
+               *)
+                       if use $1; then
+                               shift
+                               for i in $@; do
+                                       GALLIUM_DRIVERS+=",${i}"
+                               done
+                       fi
+                       ;;
+       esac
+}

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