commit:     42c5a87f91540e6926cdd858ca700700a2794fea
Author:     Andreas K. Hüttel <dilfridge <AT> gentoo <DOT> org>
AuthorDate: Sun Aug  5 09:29:55 2018 +0000
Commit:     Andreas Hüttel <dilfridge <AT> gentoo <DOT> org>
CommitDate: Sun Aug  5 09:30:48 2018 +0000
URL:        https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=42c5a87f

sys-libs/glibc: 2.27 revision bump (patchlevel 3)

Tests pass here

Package-Manager: Portage-2.3.44, Repoman-2.3.10

 sys-libs/glibc/Manifest             |    1 +
 sys-libs/glibc/glibc-2.27-r6.ebuild | 1418 +++++++++++++++++++++++++++++++++++
 2 files changed, 1419 insertions(+)

diff --git a/sys-libs/glibc/Manifest b/sys-libs/glibc/Manifest
index 72c3b5ac244..69619572243 100644
--- a/sys-libs/glibc/Manifest
+++ b/sys-libs/glibc/Manifest
@@ -18,6 +18,7 @@ DIST glibc-2.25.tar.xz 13873900 BLAKE2B 
73ef792fff059f6ad154c9af2155ea15b7869ec1
 DIST glibc-2.26-patches-7.tar.bz2 413976 BLAKE2B 
18263201cf33abf911eb7b802ed539b217391156f897a8db50f65a69627d8f8cceded78414168986ee98eba038364a6b2f3599b23f95e7b0ad2643481c399718
 SHA512 
0c812a343fcc68c10d92117cb2a0cf1c255470e81f0a7a04d6db2fe35445e410ef37f15162f145c2eb772b08ab55af246f5b52f5e57c2e91038181f6f027abc3
 DIST glibc-2.26.tar.xz 14682748 BLAKE2B 
c1c9dbec110dd4e25b2f463a96d8afc43b8e3ebfe3c958107032beaa879710252be3bc4122bb62166408725d43785f233544df6159d29cce0fc5b2c08f45adbe
 SHA512 
6ed368523bc55f00976f96c5177f114e3f714b27273d7bffc252812c8b98fb81970403c1f5b5f0a61da678811532fb446530745492d2b49bfefc0d5bd71ce8c0
 DIST glibc-2.27-patches-2.tar.bz2 129983 BLAKE2B 
fad8d14f5330bc301804913f92f48051583f122cc83ab44813dc13498f59e97b38d1b276353eed9df3fde427b669cf9168632bbed8d006a3d4995c1df79575a4
 SHA512 
b05e34dbb45aaadfdcc079888ef2b2f70b181ba31edf2e2bbd18fa666375f5c6c48993830a305de0706b4a562db6403b6287bcab4789c1c37bc535216ee9f4cd
+DIST glibc-2.27-patches-3.tar.bz2 166511 BLAKE2B 
1dc54bef6e82112935c7411f7a5cd07c1edb24c3edaa1e0243b846b3832a40af1ba3a7b77aef04c54a173388156b464ea442fa8310a02e6f44e2ed5b78994286
 SHA512 
12496e9b0c60630dbec4c2febdd6d20df1f3d7a2c243cc55b595202b27f682b9208e16cd8c387687c0cc9e18b36c3caeef8d1b1148eb3ee8081431997270db5e
 DIST glibc-2.27.tar.xz 15395316 BLAKE2B 
ea206d304c8c9aa86d69db981a14bea008602cea06a6c151c4971a8df059949ffe5632b42a67ab0ffcd7c4d7ce1ec02ac48815dac4dade1c4dd41eaee8a6ed33
 SHA512 
7c5581154487d38d173ce1feb944e60207139cca148bccf066eaae322c0c2d219423bdcfa15c7f9be1b5e45dfc43c641cc5d80d3c3c65837d08a83cdb4e2a147
 DIST glibc-2.28-patches-1.tar.bz2 15028 BLAKE2B 
4b2bcb4123a2a6d5df9c5bdf6bda29a4b7633159917d3e385bfe00d6685b71a3e42e8739a791a4ae5d88280a82227531cc6cd42536e5bd6b795f391cbcc62783
 SHA512 
6b9451df7a0e83e93b06ae97c564653ac17c8e0d9c78f8a0ed42750bd6e3e58938491acb018681341eb57898811dc6020fa42287e408dfd6e8189cb362e393f1
 DIST glibc-2.28.tar.xz 16484344 BLAKE2B 
9aa8cbd5a145c2a6fde3a60b3d0a14b12b46ed79333ad1ca3e73464adcfe700277a17a9e7fd0ca36e355a0c5b0b27decfa091da320ba802741ad75cc955bbcc8
 SHA512 
521f820953ff07c69ece4c2186f59fc061a7f9747932cd70ef2995c2b2deee76eeb6de700d85071cdca5949179aa8ccee75eda7feca1394121ec7b821ad0a3f3

diff --git a/sys-libs/glibc/glibc-2.27-r6.ebuild 
b/sys-libs/glibc/glibc-2.27-r6.ebuild
new file mode 100644
index 00000000000..080b20ae25c
--- /dev/null
+++ b/sys-libs/glibc/glibc-2.27-r6.ebuild
@@ -0,0 +1,1418 @@
+# Copyright 1999-2018 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=6
+
+inherit prefix eutils versionator toolchain-funcs flag-o-matic gnuconfig \
+       multilib systemd multiprocessing
+
+DESCRIPTION="GNU libc C library"
+HOMEPAGE="https://www.gnu.org/software/libc/";
+LICENSE="LGPL-2.1+ BSD HPND ISC inner-net rc PCRE"
+RESTRICT="strip" # Strip ourself #46186
+SLOT="2.2"
+
+EMULTILIB_PKG="true"
+
+if [[ ${PV} == 9999* ]]; then
+       EGIT_REPO_URI="https://sourceware.org/git/glibc.git";
+       inherit git-r3
+else
+       # KEYWORDS="~alpha ~amd64 ~arm ~arm64 ~hppa ~ia64 ~m68k ~mips ~ppc 
~ppc64 ~s390 ~sh ~sparc ~x86"
+       SRC_URI="mirror://gnu/glibc/${P}.tar.xz"
+fi
+
+RELEASE_VER=${PV}
+
+GCC_BOOTSTRAP_VER=20180511
+
+# Gentoo patchset
+PATCH_VER=3
+
+SRC_URI+=" 
https://dev.gentoo.org/~dilfridge/distfiles/${P}-patches-${PATCH_VER}.tar.bz2";
+SRC_URI+=" multilib? ( 
https://dev.gentoo.org/~dilfridge/distfiles/gcc-multilib-bootstrap-${GCC_BOOTSTRAP_VER}.tar.xz
 )"
+
+IUSE="audit caps compile-locales doc gd hardened headers-only +multiarch 
multilib nscd profile selinux suid systemtap vanilla"
+
+# Minimum kernel version that glibc requires
+MIN_KERN_VER="3.2.0"
+
+# Here's how the cross-compile logic breaks down ...
+#  CTARGET - machine that will target the binaries
+#  CHOST   - machine that will host the binaries
+#  CBUILD  - machine that will build the binaries
+# If CTARGET != CHOST, it means you want a libc for cross-compiling.
+# If CHOST != CBUILD, it means you want to cross-compile the libc.
+#  CBUILD = CHOST = CTARGET    - native build/install
+#  CBUILD != (CHOST = CTARGET) - cross-compile a native build
+#  (CBUILD = CHOST) != CTARGET - libc for cross-compiler
+#  CBUILD != CHOST != CTARGET  - cross-compile a libc for a cross-compiler
+# For install paths:
+#  CHOST = CTARGET  - install into /
+#  CHOST != CTARGET - install into /usr/CTARGET/
+#
+export CBUILD=${CBUILD:-${CHOST}}
+export CTARGET=${CTARGET:-${CHOST}}
+if [[ ${CTARGET} == ${CHOST} ]] ; then
+       if [[ ${CATEGORY} == cross-* ]] ; then
+               export CTARGET=${CATEGORY#cross-}
+       fi
+fi
+
+# We need a new-enough binutils/gcc to match upstream baseline.
+# Also we need to make sure our binutils/gcc supports TLS.
+COMMON_DEPEND="
+       nscd? ( selinux? (
+               audit? ( sys-process/audit )
+               caps? ( sys-libs/libcap )
+       ) )
+       suid? ( caps? ( sys-libs/libcap ) )
+       selinux? ( sys-libs/libselinux )
+       systemtap? ( dev-util/systemtap )
+"
+DEPEND="${COMMON_DEPEND}
+       >=app-misc/pax-utils-0.1.10
+       sys-devel/bison
+       !<sys-apps/sandbox-1.6
+       !<sys-apps/portage-2.1.2
+       !<sys-devel/bison-2.7
+       doc? ( sys-apps/texinfo )
+"
+RDEPEND="${COMMON_DEPEND}
+       sys-apps/gentoo-functions
+       !sys-kernel/ps3-sources
+       !sys-libs/nss-db
+"
+
+if [[ ${CATEGORY} == cross-* ]] ; then
+       DEPEND+=" !headers-only? (
+               >=${CATEGORY}/binutils-2.24
+               >=${CATEGORY}/gcc-4.9
+       )"
+       [[ ${CATEGORY} == *-linux* ]] && DEPEND+=" ${CATEGORY}/linux-headers"
+else
+       DEPEND+="
+               >=sys-devel/binutils-2.24
+               >=sys-devel/gcc-4.9
+               virtual/os-headers
+       "
+       RDEPEND+=" vanilla? ( !sys-libs/timezone-data )"
+       PDEPEND+=" !vanilla? ( sys-libs/timezone-data )"
+fi
+
+#
+# Small helper functions
+#
+
+is_crosscompile() {
+       [[ ${CHOST} != ${CTARGET} ]]
+}
+
+just_headers() {
+       is_crosscompile && use headers-only
+}
+
+alt_prefix() {
+       is_crosscompile && echo /usr/${CTARGET}
+}
+
+# We need to be able to set alternative headers for compiling for non-native
+# platform. Will also become useful for testing kernel-headers without screwing
+# up the whole system.
+alt_headers() {
+       echo ${ALT_HEADERS:=$(alt_prefix)/usr/include}
+}
+
+alt_build_headers() {
+       if [[ -z ${ALT_BUILD_HEADERS} ]] ; then
+               ALT_BUILD_HEADERS="${EPREFIX}$(alt_headers)"
+               if tc-is-cross-compiler ; then
+                       ALT_BUILD_HEADERS=${SYSROOT}$(alt_headers)
+                       if [[ ! -e ${ALT_BUILD_HEADERS}/linux/version.h ]] ; 
then
+                               local header_path=$(echo '#include 
<linux/version.h>' | $(tc-getCPP ${CTARGET}) ${CFLAGS} 2>&1 | grep -o 
'[^"]*linux/version.h')
+                               
ALT_BUILD_HEADERS=${header_path%/linux/version.h}
+                       fi
+               fi
+       fi
+       echo "${ALT_BUILD_HEADERS}"
+}
+
+alt_libdir() {
+       echo $(alt_prefix)/$(get_libdir)
+}
+alt_usrlibdir() {
+       echo $(alt_prefix)/usr/$(get_libdir)
+}
+
+builddir() {
+       echo "${WORKDIR}/build-${ABI}-${CTARGET}-$1"
+}
+
+do_compile_test() {
+       local ret save_cflags=${CFLAGS}
+       CFLAGS+=" $1"
+       shift
+
+       pushd "${T}" >/dev/null
+
+       rm -f glibc-test*
+       printf '%b' "$*" > glibc-test.c
+
+       nonfatal emake -s glibc-test
+       ret=$?
+
+       popd >/dev/null
+
+       CFLAGS=${save_cflags}
+       return ${ret}
+}
+
+do_run_test() {
+       local ret
+
+       if [[ ${MERGE_TYPE} == "binary" ]] ; then
+               # ignore build failures when installing a binary package #324685
+               do_compile_test "" "$@" 2>/dev/null || return 0
+       else
+               if ! do_compile_test "" "$@" ; then
+                       ewarn "Simple build failed ... assuming this is desired 
#324685"
+                       return 0
+               fi
+       fi
+
+       pushd "${T}" >/dev/null
+
+       ./glibc-test
+       ret=$?
+       rm -f glibc-test*
+
+       popd >/dev/null
+
+       return ${ret}
+}
+
+setup_target_flags() {
+       # This largely mucks with compiler flags.  None of which should matter
+       # when building up just the headers.
+       just_headers && return 0
+
+       case $(tc-arch) in
+               x86)
+                       # -march needed for #185404 #199334
+                       # TODO: When creating the first glibc cross-compile, 
this test will
+                       # always fail as it does a full link which in turn 
requires glibc.
+                       # Probably also applies when changing multilib profile 
settings (e.g.
+                       # enabling x86 when the profile was amd64-only 
previously).
+                       # We could change main to _start and pass -nostdlib 
here so that we
+                       # only test the gcc code compilation.  Or we could do a 
compile and
+                       # then look for the symbol via scanelf.
+                       if ! do_compile_test "" 'void f(int i, void *p) {if 
(__sync_fetch_and_add(&i, 1)) f(i, p);}\nint main(){return 0;}\n' 2>/dev/null ; 
then
+                               local t=${CTARGET_OPT:-${CTARGET}}
+                               t=${t%%-*}
+                               filter-flags '-march=*'
+                               export CFLAGS="-march=${t} ${CFLAGS}"
+                               einfo "Auto adding -march=${t} to CFLAGS 
#185404"
+                       fi
+               ;;
+               amd64)
+                       # -march needed for #185404 #199334
+                       # Note: This test only matters when the x86 ABI is 
enabled, so we could
+                       # optimize a bit and elide it.
+                       # TODO: See cross-compile issues listed above for x86.
+                       if ! do_compile_test "${CFLAGS_x86}" 'void f(int i, 
void *p) {if (__sync_fetch_and_add(&i, 1)) f(i, p);}\nint main(){return 0;}\n' 
2>/dev/null ; then
+                               local t=${CTARGET_OPT:-${CTARGET}}
+                               t=${t%%-*}
+                               # Normally the target is x86_64-xxx, so turn 
that into the -march that
+                               # gcc actually accepts. #528708
+                               [[ ${t} == "x86_64" ]] && t="x86-64"
+                               filter-flags '-march=*'
+                               # ugly, ugly, ugly.  ugly.
+                               CFLAGS_x86=$(CFLAGS=${CFLAGS_x86} filter-flags 
'-march=*'; echo "${CFLAGS}")
+                               export CFLAGS_x86="${CFLAGS_x86} -march=${t}"
+                               einfo "Auto adding -march=${t} to CFLAGS_x86 
#185404"
+                       fi
+               ;;
+               mips)
+                       # The mips abi cannot support the GNU style hashes. 
#233233
+                       filter-ldflags -Wl,--hash-style=gnu 
-Wl,--hash-style=both
+               ;;
+               sparc)
+                       # Both sparc and sparc64 can use -fcall-used-g6.  -g7 
is bad, though.
+                       filter-flags "-fcall-used-g7"
+                       append-flags "-fcall-used-g6"
+
+                       # If the CHOST is the basic one (e.g. not sparcv9-xxx 
already),
+                       # try to pick a better one so glibc can use 
cpu-specific .S files.
+                       # We key off the CFLAGS to get a good value.  Also need 
to handle
+                       # version skew.
+                       # We can't force users to set their CHOST to their 
exact machine
+                       # as many of these are not recognized by config.sub/gcc 
and such :(.
+                       # Note: If the mcpu values don't scale, we might try 
probing CPP defines.
+                       # Note: Should we factor in -Wa,-AvXXX flags too ?  Or 
-mvis/etc... ?
+
+                       local cpu
+                       case ${CTARGET} in
+                       sparc64-*)
+                               case $(get-flag mcpu) in
+                               niagara[234])
+                                       if version_is_at_least 2.8 ; then
+                                               cpu="sparc64v2"
+                                       elif version_is_at_least 2.4 ; then
+                                               cpu="sparc64v"
+                                       elif version_is_at_least 2.2.3 ; then
+                                               cpu="sparc64b"
+                                       fi
+                                       ;;
+                               niagara)
+                                       if version_is_at_least 2.4 ; then
+                                               cpu="sparc64v"
+                                       elif version_is_at_least 2.2.3 ; then
+                                               cpu="sparc64b"
+                                       fi
+                                       ;;
+                               ultrasparc3)
+                                       cpu="sparc64b"
+                                       ;;
+                               *)
+                                       # We need to force at least v9a because 
the base build doesn't
+                                       # work with just v9.
+                                       # 
https://sourceware.org/bugzilla/show_bug.cgi?id=19477
+                                       [[ -z ${cpu} ]] && append-flags 
"-Wa,-xarch=v9a"
+                                       ;;
+                               esac
+                               ;;
+                       sparc-*)
+                               case $(get-flag mcpu) in
+                               niagara[234])
+                                       if version_is_at_least 2.8 ; then
+                                               cpu="sparcv9v2"
+                                       elif version_is_at_least 2.4 ; then
+                                               cpu="sparcv9v"
+                                       elif version_is_at_least 2.2.3 ; then
+                                               cpu="sparcv9b"
+                                       else
+                                               cpu="sparcv9"
+                                       fi
+                                       ;;
+                               niagara)
+                                       if version_is_at_least 2.4 ; then
+                                               cpu="sparcv9v"
+                                       elif version_is_at_least 2.2.3 ; then
+                                               cpu="sparcv9b"
+                                       else
+                                               cpu="sparcv9"
+                                       fi
+                                       ;;
+                               ultrasparc3)
+                                       cpu="sparcv9b"
+                                       ;;
+                               v9|ultrasparc)
+                                       cpu="sparcv9"
+                                       ;;
+                               v8|supersparc|hypersparc|leon|leon3)
+                                       cpu="sparcv8"
+                                       ;;
+                               esac
+                       ;;
+                       esac
+                       [[ -n ${cpu} ]] && CTARGET_OPT="${cpu}-${CTARGET#*-}"
+               ;;
+       esac
+}
+
+setup_flags() {
+       # Make sure host make.conf doesn't pollute us
+       if is_crosscompile || tc-is-cross-compiler ; then
+               CHOST=${CTARGET} strip-unsupported-flags
+       fi
+
+       # Store our CFLAGS because it's changed depending on which CTARGET
+       # we are building when pulling glibc on a multilib profile
+       CFLAGS_BASE=${CFLAGS_BASE-${CFLAGS}}
+       CFLAGS=${CFLAGS_BASE}
+       CXXFLAGS_BASE=${CXXFLAGS_BASE-${CXXFLAGS}}
+       CXXFLAGS=${CXXFLAGS_BASE}
+       ASFLAGS_BASE=${ASFLAGS_BASE-${ASFLAGS}}
+       ASFLAGS=${ASFLAGS_BASE}
+
+       # Over-zealous CFLAGS can often cause problems.  What may work for one
+       # person may not work for another.  To avoid a large influx of bugs
+       # relating to failed builds, we strip most CFLAGS out to ensure as few
+       # problems as possible.
+       strip-flags
+       strip-unsupported-flags
+       filter-flags -m32 -m64 '-mabi=*'
+
+       # glibc aborts if rpath is set by LDFLAGS
+       filter-ldflags '-Wl,-rpath=*'
+
+       # #492892
+       filter-flags -frecord-gcc-switches
+
+       unset CBUILD_OPT CTARGET_OPT
+       if use multilib ; then
+               CTARGET_OPT=$(get_abi_CTARGET)
+               [[ -z ${CTARGET_OPT} ]] && CTARGET_OPT=$(get_abi_CHOST)
+       fi
+
+       setup_target_flags
+
+       if [[ -n ${CTARGET_OPT} && ${CBUILD} == ${CHOST} ]] && ! 
is_crosscompile; then
+               CBUILD_OPT=${CTARGET_OPT}
+       fi
+
+       # Lock glibc at -O2; we want to be conservative here.
+       # -fno-strict-aliasing is to work around #155906.
+       filter-flags '-O?'
+       append-flags -O2 -fno-strict-aliasing
+
+       filter-flags '-fstack-protector*'
+
+       # Starting with gcc-6 (and fully upstreamed pie patches) we control
+       # default enabled/disabled pie via use flags. So nothing to do
+       # here then. #618160
+       if [[ $(gcc-major-version) -lt 6 ]]; then
+               if use hardened && tc-enables-pie ; then
+                       # Force PIC macro definition for all compilations since 
they're all
+                       # either -fPIC or -fPIE with the default-PIE compiler.
+                       append-cppflags -DPIC
+               else
+                       # Don't build -fPIE without the default-PIE compiler 
and the
+                       # hardened-pie patch
+                       filter-flags -fPIE
+               fi
+       fi
+}
+
+want_tls() {
+       # Archs that can use TLS (Thread Local Storage)
+       case $(tc-arch) in
+               x86)
+                       # requires i486 or better #106556
+                       [[ ${CTARGET} == i[4567]86* ]] && return 0
+                       return 1
+               ;;
+       esac
+       return 0
+}
+
+want__thread() {
+       want_tls || return 1
+
+       # For some reason --with-tls --with__thread is causing segfaults on 
sparc32.
+       [[ ${PROFILE_ARCH} == "sparc" ]] && return 1
+
+       [[ -n ${WANT__THREAD} ]] && return ${WANT__THREAD}
+
+       # only test gcc -- can't test linking yet
+       tc-has-tls -c ${CTARGET}
+       WANT__THREAD=$?
+
+       return ${WANT__THREAD}
+}
+
+use_multiarch() {
+       # Allow user to disable runtime arch detection in multilib.
+       use multiarch || return 1
+       # Make sure binutils is new enough to support indirect functions,
+       # #336792. This funky sed supports gold and bfd linkers.
+       local bver nver
+       bver=$($(tc-getLD ${CTARGET}) -v | sed -n -r 
'1{s:[^0-9]*::;s:^([0-9.]*).*:\1:;p}')
+       case $(tc-arch ${CTARGET}) in
+       amd64|x86) nver="2.20" ;;
+       arm)       nver="2.22" ;;
+       hppa)      nver="2.23" ;;
+       ppc|ppc64) nver="2.20" ;;
+       # ifunc support was added in 2.23, but glibc also needs
+       # machinemode which is in 2.24.
+       s390)      nver="2.24" ;;
+       sparc)     nver="2.21" ;;
+       *)         return 1 ;;
+       esac
+       version_is_at_least ${nver} ${bver}
+}
+
+# Setup toolchain variables that had historically been defined in the
+# profiles for these archs.
+setup_env() {
+       # silly users
+       unset LD_RUN_PATH
+       unset LD_ASSUME_KERNEL
+
+       if is_crosscompile || tc-is-cross-compiler ; then
+               multilib_env ${CTARGET_OPT:-${CTARGET}}
+
+               if ! use multilib ; then
+                       MULTILIB_ABIS=${DEFAULT_ABI}
+               else
+                       MULTILIB_ABIS=${MULTILIB_ABIS:-${DEFAULT_ABI}}
+               fi
+
+               # If the user has CFLAGS_<CTARGET> in their make.conf, use that,
+               # and fall back on CFLAGS.
+               local VAR=CFLAGS_${CTARGET//[-.]/_}
+               CFLAGS=${!VAR-${CFLAGS}}
+               einfo " $(printf '%15s' 'Manual CFLAGS:')   ${CFLAGS}"
+       fi
+
+       setup_flags
+
+       export ABI=${ABI:-${DEFAULT_ABI:-default}}
+
+       if use headers-only ; then
+               # Avoid mixing host's CC and target's CFLAGS_${ABI}:
+               # At this bootstrap stage we have only binutils for
+               # target but not compiler yet.
+               einfo "Skip CC ABI injection. We can't use (cross-)compiler 
yet."
+               return 0
+       fi
+       local VAR=CFLAGS_${ABI}
+       # We need to export CFLAGS with abi information in them because glibc's
+       # configure script checks CFLAGS for some targets (like mips).  Keep
+       # around the original clean value to avoid appending multiple ABIs on
+       # top of each other.
+       : ${__GLIBC_CC:=$(tc-getCC ${CTARGET_OPT:-${CTARGET}})}
+       export __GLIBC_CC CC="${__GLIBC_CC} ${!VAR}"
+       einfo " $(printf '%15s' 'Manual CC:')   ${CC}"
+}
+
+foreach_abi() {
+       setup_env
+
+       local ret=0
+       local abilist=""
+       if use multilib ; then
+               abilist=$(get_install_abis)
+       else
+               abilist=${DEFAULT_ABI}
+       fi
+       local -x ABI
+       for ABI in ${abilist:-default} ; do
+               setup_env
+               einfo "Running $1 for ABI ${ABI}"
+               $1
+               : $(( ret |= $? ))
+       done
+       return ${ret}
+}
+
+glibc_banner() {
+       local b="Gentoo ${PVR}"
+       [[ -n ${PATCH_VER} ]] && ! use vanilla && b+=" p${PATCH_VER}"
+       echo "${b}"
+}
+
+check_devpts() {
+       # Make sure devpts is mounted correctly for use w/out setuid pt_chown.
+
+       # If merely building the binary package, then there's nothing to verify.
+       [[ ${MERGE_TYPE} == "buildonly" ]] && return
+
+       # Only sanity check when installing the native glibc.
+       [[ ${ROOT} != "/" ]] && return
+
+       # If they're opting in to the old suid code, then no need to check.
+       use suid && return
+
+       if awk '$3 == "devpts" && $4 ~ /[, ]gid=5[, ]/ { exit 1 }' /proc/mounts 
; then
+               eerror "In order to use glibc with USE=-suid, you must make 
sure that"
+               eerror "you have devpts mounted at /dev/pts with the gid=5 
option."
+               eerror "Openrc should do this for you, so you should check 
/etc/fstab"
+               eerror "and make sure you do not have any invalid settings 
there."
+               die "mount & fix your /dev/pts settings"
+       fi
+}
+
+# The following Kernel version handling functions are mostly copied from 
portage
+# source. It's better not to use linux-info.eclass here since a) it adds too
+# much magic, see bug 326693 for some of the arguments, and b) some of the
+# functions are just not provided.
+
+g_get_running_KV() {
+       uname -r
+       return $?
+}
+
+g_KV_major() {
+       [[ -z $1 ]] && return 1
+       local KV=$@
+       echo "${KV%%.*}"
+}
+
+g_KV_minor() {
+       [[ -z $1 ]] && return 1
+       local KV=$@
+       KV=${KV#*.}
+       echo "${KV%%.*}"
+}
+
+g_KV_micro() {
+       [[ -z $1 ]] && return 1
+       local KV=$@
+       KV=${KV#*.*.}
+       echo "${KV%%[^[:digit:]]*}"
+}
+
+g_KV_to_int() {
+       [[ -z $1 ]] && return 1
+       local KV_MAJOR=$(g_KV_major "$1")
+       local KV_MINOR=$(g_KV_minor "$1")
+       local KV_MICRO=$(g_KV_micro "$1")
+       local KV_int=$(( KV_MAJOR * 65536 + KV_MINOR * 256 + KV_MICRO ))
+
+       # We make version 2.2.0 the minimum version we will handle as
+       # a sanity check ... if its less, we fail ...
+       if [[ ${KV_int} -ge 131584 ]] ; then
+               echo "${KV_int}"
+               return 0
+       fi
+       return 1
+}
+
+g_int_to_KV() {
+       local version=$1 major minor micro
+       major=$((version / 65536))
+       minor=$(((version % 65536) / 256))
+       micro=$((version % 256))
+       echo ${major}.${minor}.${micro}
+}
+
+eend_KV() {
+       [[ $(g_KV_to_int $1) -ge $(g_KV_to_int $2) ]]
+       eend $?
+}
+
+get_kheader_version() {
+       printf '#include <linux/version.h>\nLINUX_VERSION_CODE\n' | \
+       $(tc-getCPP ${CTARGET}) -I "${EPREFIX}/$(alt_build_headers)" - | \
+       tail -n 1
+}
+
+# We collect all sanity checks here. Consistency is not guranteed between
+# pkg_ and src_ phases, so we call this function both in pkg_pretend and in
+# src_unpack.
+sanity_prechecks() {
+       # Make sure devpts is mounted correctly for use w/out setuid pt_chown
+       check_devpts
+
+       # Prevent native builds from downgrading
+       if [[ ${MERGE_TYPE} != "buildonly" ]] && \
+          [[ ${ROOT} == "/" ]] && \
+          [[ ${CBUILD} == ${CHOST} ]] && \
+          [[ ${CHOST} == ${CTARGET} ]] ; then
+
+               # The high rev # is to allow people to downgrade between -r#
+               # versions. We want to block 2.20->2.19, but 2.20-r3->2.20-r2
+               # should be fine. Hopefully we never actually use a r# this
+               # high.
+               if has_version ">${CATEGORY}/${P}-r10000" ; then
+                       eerror "Sanity check to keep you from breaking your 
system:"
+                       eerror " Downgrading glibc is not supported and a sure 
way to destruction."
+                       die "Aborting to save your system."
+               fi
+
+               if ! do_run_test '#include <unistd.h>\n#include 
<sys/syscall.h>\nint main(){return syscall(1000)!=-1;}\n' ; then
+                       eerror "Your old kernel is broken. You need to update 
it to a newer"
+                       eerror "version as syscall(<bignum>) will break. See 
bug 279260."
+                       die "Old and broken kernel."
+               fi
+       fi
+
+       # Users have had a chance to phase themselves, time to give em the boot
+       if [[ -e ${EROOT}/etc/locale.gen ]] && [[ -e ${EROOT}/etc/locales.build 
]] ; then
+               eerror "You still haven't deleted ${EROOT}/etc/locales.build."
+               eerror "Do so now after making sure ${EROOT}/etc/locale.gen is 
kosher."
+               die "Lazy upgrader detected"
+       fi
+
+       if [[ ${CTARGET} == i386-* ]] ; then
+               eerror "i386 CHOSTs are no longer supported."
+               eerror "Chances are you don't actually want/need i386."
+               eerror "Please read 
https://www.gentoo.org/doc/en/change-chost.xml";
+               die "Please fix your CHOST"
+       fi
+
+       if [[ -e /proc/xen ]] && [[ $(tc-arch) == "x86" ]] && ! is-flag 
-mno-tls-direct-seg-refs ; then
+               ewarn "You are using Xen but don't have 
-mno-tls-direct-seg-refs in your CFLAGS."
+               ewarn "This will result in a 50% performance penalty when 
running with a 32bit"
+               ewarn "hypervisor, which is probably not what you want."
+       fi
+
+       use hardened && ! tc-enables-pie && \
+               ewarn "PIE hardening not applied, as your compiler doesn't 
default to PIE"
+
+       # Check for sanity of /etc/nsswitch.conf
+       if [[ -e ${EROOT}/etc/nsswitch.conf ]] ; then
+               local entry
+               for entry in passwd group shadow; do
+                       if ! egrep -q "^[ \t]*${entry}:.*files" 
"${EROOT}"/etc/nsswitch.conf; then
+                               eerror "Your ${EROOT}/etc/nsswitch.conf is out 
of date."
+                               eerror "Please make sure you have 'files' 
entries for"
+                               eerror "'passwd:', 'group:' and 'shadow:' 
databases."
+                               eerror "For more details see:"
+                               eerror "  
https://wiki.gentoo.org/wiki/Project:Toolchain/nsswitch.conf_in_glibc-2.26";
+                               die "nsswitch.conf has no 'files' provider in 
'${entry}'."
+                       fi
+               done
+       fi
+
+       # ABI-specific checks follow here. Hey, we have a lot more specific 
conditions that
+       # we test for...
+       if ! is_crosscompile ; then
+               if use amd64 && use multilib && [[ ${MERGE_TYPE} != "binary" ]] 
; then
+                       ebegin "Checking that IA32 emulation is enabled in the 
running kernel"
+                       echo 'int main(){return 0;}' > 
"${T}/check-ia32-emulation.c"
+                       local STAT
+                       if "${CC-${CHOST}-gcc}" ${CFLAGS_x86} 
"${T}/check-ia32-emulation.c" -o "${T}/check-ia32-emulation.elf32"; then
+                               "${T}/check-ia32-emulation.elf32"
+                               STAT=$?
+                       else
+                               # Don't fail here to allow single->multi ABI 
switch
+                               # or recover from breakage like bug #646424
+                               ewarn "Failed to compile the ABI test. Broken 
host glibc?"
+                               STAT=0
+                       fi
+                       rm -f "${T}/check-ia32-emulation.elf32"
+                       eend $STAT
+                       [[ $STAT -eq 0 ]] || die "CONFIG_IA32_EMULATION must be 
enabled in the kernel to compile a multilib glibc."
+               fi
+
+       fi
+
+       # When we actually have to compile something...
+       if ! just_headers ; then
+               local run_kv build_kv want_kv
+
+               run_kv=$(g_get_running_KV)
+               build_kv=$(g_int_to_KV $(get_kheader_version))
+               want_kv=${MIN_KERN_VER}
+
+               ebegin "Checking gcc for __thread support"
+               if ! eend $(want__thread ; echo $?) ; then
+                       echo
+                       eerror "Could not find a gcc that supports the __thread 
directive!"
+                       eerror "Please update your binutils/gcc and try again."
+                       die "No __thread support in gcc!"
+               fi
+
+               if ! is_crosscompile && ! tc-is-cross-compiler ; then
+                       # Building fails on an non-supporting kernel
+                       ebegin "Checking running kernel version (${run_kv} >= 
${want_kv})"
+                       if ! eend_KV ${run_kv} ${want_kv} ; then
+                               echo
+                               eerror "You need a kernel of at least 
${want_kv}!"
+                               die "Kernel version too low!"
+                       fi
+               fi
+
+               ebegin "Checking linux-headers version (${build_kv} >= 
${want_kv})"
+               if ! eend_KV ${build_kv} ${want_kv} ; then
+                       echo
+                       eerror "You need linux-headers of at least ${want_kv}!"
+                       die "linux-headers version too low!"
+               fi
+       fi
+}
+
+#
+# the phases
+#
+
+# pkg_pretend
+
+pkg_pretend() {
+       # All the checks...
+       einfo "Checking general environment sanity."
+       sanity_prechecks
+}
+
+# src_unpack
+
+src_unpack() {
+       # Consistency is not guaranteed between pkg_ and src_ ...
+       sanity_prechecks
+
+       use multilib && unpack 
gcc-multilib-bootstrap-${GCC_BOOTSTRAP_VER}.tar.xz
+
+       setup_env
+
+       if [[ -n ${EGIT_REPO_URI} ]] ; then
+               git-r3_src_unpack
+       else
+               unpack ${P}.tar.xz
+       fi
+
+       cd "${S}" || die
+       touch locale/C-translit.h || die #185476 #218003
+
+       cd "${WORKDIR}" || die
+       unpack glibc-${RELEASE_VER}-patches-${PATCH_VER}.tar.bz2
+}
+
+src_prepare() {
+       if ! use vanilla ; then
+               elog "Applying Gentoo Glibc Patchset 
${RELEASE_VER}-${PATCH_VER}"
+               eapply "${WORKDIR}"/patches
+               einfo "Done."
+       fi
+
+       default
+
+       gnuconfig_update
+
+       cd "${WORKDIR}"
+       find . -name configure -exec touch {} +
+
+       eprefixify extra/locale/locale-gen
+
+       # Fix permissions on some of the scripts.
+       chmod u+x "${S}"/scripts/*.sh
+
+       cd "${S}"
+}
+
+glibc_do_configure() {
+       # Glibc does not work with gold (for various reasons) #269274.
+       tc-ld-disable-gold
+
+       # CXX isnt handled by the multilib system, so if we dont unset here
+       # we accumulate crap across abis
+       unset CXX
+
+       einfo "Configuring glibc for nptl"
+
+       if use doc ; then
+               export MAKEINFO=makeinfo
+       else
+               export MAKEINFO=/dev/null
+       fi
+
+       local v
+       for v in ABI CBUILD CHOST CTARGET CBUILD_OPT CTARGET_OPT CC CXX LD 
{AS,C,CPP,CXX,LD}FLAGS MAKEINFO ; do
+               einfo " $(printf '%15s' ${v}:)   ${!v}"
+       done
+
+       # CFLAGS can contain ABI-specific flags like -mfpu=neon, see bug #657760
+       # To build .S (assembly) files with the same ABI-specific flags
+       # upstream currently recommends adding CFLAGS to CC/CXX:
+       #    https://sourceware.org/PR23273
+       # Note: Passing CFLAGS via CPPFLAGS overrides glibc's arch-specific 
CFLAGS
+       # and breaks multiarch support. See 659030#c3 for an example.
+
+       # The glibc configure script doesn't properly use LDFLAGS all the time.
+       export CC="$(tc-getCC ${CTARGET}) ${CFLAGS} ${LDFLAGS}"
+       einfo " $(printf '%15s' 'Manual CC:')   ${CC}"
+
+       # Some of the tests are written in C++, so we need to force our multlib 
abis in, bug 623548
+       export CXX="$(tc-getCXX ${CTARGET}) $(get_abi_CFLAGS) ${CFLAGS}"
+       einfo " $(printf '%15s' 'Manual CXX:')   ${CXX}"
+
+       echo
+
+       local myconf=()
+
+       case ${CTARGET} in
+               powerpc-*)
+                       # Currently gcc on powerpc32 generates invalid code for
+                       # __builtin_return_address(0) calls. Normally programs
+                       # don't do that but malloc hooks in glibc do:
+                       # https://gcc.gnu.org/PR81996
+                       # https://bugs.gentoo.org/629054
+                       myconf+=( --enable-stack-protector=no )
+                       ;;
+               *)
+                       myconf+=( --enable-stack-protector=all )
+                       ;;
+       esac
+       myconf+=( --enable-stackguard-randomization )
+
+       # Keep a whitelist of targets supporing IFUNC. glibc's ./configure
+       # is not robust enough to detect proper support:
+       #    https://bugs.gentoo.org/641216
+       #    https://sourceware.org/PR22634#c0
+       case $(tc-arch ${CTARGET}) in
+               # Keep whitelist of targets where autodetection mostly works.
+               amd64|x86|sparc|ppc|ppc64|arm|arm64|s390) ;;
+               # Blacklist everywhere else
+               *) myconf+=( libc_cv_ld_gnu_indirect_function=no ) ;;
+       esac
+
+       [[ $(tc-is-softfloat) == "yes" ]] && myconf+=( --without-fp )
+
+       myconf+=( --enable-kernel=${MIN_KERN_VER} )
+
+       # Since SELinux support is only required for nscd, only enable it if:
+       # 1. USE selinux
+       # 2. only for the primary ABI on multilib systems
+       # 3. Not a crosscompile
+       if ! is_crosscompile && use selinux ; then
+               if use multilib ; then
+                       if is_final_abi ; then
+                               myconf+=( --with-selinux )
+                       else
+                               myconf+=( --without-selinux )
+                       fi
+               else
+                       myconf+=( --with-selinux )
+               fi
+       else
+               myconf+=( --without-selinux )
+       fi
+
+       # Force a few tests where we always know the answer but
+       # configure is incapable of finding it.
+       if is_crosscompile ; then
+               export \
+                       libc_cv_c_cleanup=yes \
+                       libc_cv_forced_unwind=yes
+       fi
+
+       myconf+=(
+               --without-cvs
+               --disable-werror
+               --enable-bind-now
+               --build=${CBUILD_OPT:-${CBUILD}}
+               --host=${CTARGET_OPT:-${CTARGET}}
+               $(use_enable profile)
+               $(use_with gd)
+               --with-headers=$(alt_build_headers)
+               --prefix="${EPREFIX}/usr"
+               --sysconfdir="${EPREFIX}/etc"
+               --localstatedir="${EPREFIX}/var"
+               --libdir='$(prefix)'/$(get_libdir)
+               --mandir='$(prefix)'/share/man
+               --infodir='$(prefix)'/share/info
+               --libexecdir='$(libdir)'/misc/glibc
+               --with-bugurl=https://bugs.gentoo.org/
+               --with-pkgversion="$(glibc_banner)"
+               $(use_multiarch || echo --disable-multi-arch)
+               $(use_enable systemtap)
+               $(use_enable nscd)
+               ${EXTRA_ECONF}
+       )
+
+       # We rely on sys-libs/timezone-data for timezone tools normally.
+       myconf+=( $(use_enable vanilla timezone-tools) )
+
+       # These libs don't have configure flags.
+       ac_cv_lib_audit_audit_log_user_avc_message=$(usex audit || echo no)
+       ac_cv_lib_cap_cap_init=$(usex caps || echo no)
+
+       # There is no configure option for this and we need to export it
+       # since the glibc build will re-run configure on itself
+       export libc_cv_rootsbindir="${EPREFIX}/sbin"
+       export libc_cv_slibdir="${EPREFIX}/$(get_libdir)"
+
+       # We take care of patching our binutils to use both hash styles,
+       # and many people like to force gnu hash style only, so disable
+       # this overriding check.  #347761
+       export libc_cv_hashstyle=no
+
+       local builddir=$(builddir nptl)
+       mkdir -p "${builddir}"
+       cd "${builddir}"
+       set -- "${S}"/configure "${myconf[@]}"
+       echo "$@"
+       "$@" || die "failed to configure glibc"
+
+       # ia64 static cross-compilers are a pita in so much that they
+       # can't produce static ELFs (as the libgcc.a is broken).  so
+       # disable building of the programs for those targets if it
+       # doesn't work.
+       # XXX: We could turn this into a compiler test, but ia64 is
+       # the only one that matters, so this should be fine for now.
+       if is_crosscompile && [[ ${CTARGET} == ia64* ]] ; then
+               sed -i '1i+link-static = touch $@' config.make
+       fi
+
+       # If we're trying to migrate between ABI sets, we need
+       # to lie and use a local copy of gcc.  Like if the system
+       # is built with MULTILIB_ABIS="amd64 x86" but we want to
+       # add x32 to it, gcc/glibc don't yet support x32.
+       #
+       if [[ -n ${GCC_BOOTSTRAP_VER} ]] && use multilib ; then
+               echo 'main(){}' > "${T}"/test.c
+               if ! $(tc-getCC ${CTARGET}) ${CFLAGS} ${LDFLAGS} "${T}"/test.c 
-Wl,-emain -lgcc 2>/dev/null ; then
+                       sed -i -e '/^CC = /s:$: 
-B$(objdir)/../'"gcc-multilib-bootstrap-${GCC_BOOTSTRAP_VER}/${ABI}:" 
config.make || die
+               fi
+       fi
+}
+
+glibc_headers_configure() {
+       export ABI=default
+
+       local builddir=$(builddir "headers")
+       mkdir -p "${builddir}"
+       cd "${builddir}"
+
+       # if we don't have a compiler yet, we can't really test it now ...
+       # hopefully they don't affect header generation, so let's hope for
+       # the best here ...
+       local v vars=(
+               ac_cv_header_cpuid_h=yes
+               
libc_cv_{386,390,alpha,arm,hppa,ia64,mips,{powerpc,sparc}{,32,64},sh,x86_64}_tls=yes
+               libc_cv_asm_cfi_directives=yes
+               libc_cv_broken_visibility_attribute=no
+               libc_cv_c_cleanup=yes
+               libc_cv_compiler_powerpc64le_binary128_ok=yes
+               libc_cv_forced_unwind=yes
+               libc_cv_gcc___thread=yes
+               libc_cv_mlong_double_128=yes
+               libc_cv_mlong_double_128ibm=yes
+               libc_cv_ppc_machine=yes
+               libc_cv_ppc_rel16=yes
+               libc_cv_predef_fortify_source=no
+               libc_cv_target_power8_ok=yes
+               libc_cv_visibility_attribute=yes
+               libc_cv_z_combreloc=yes
+               libc_cv_z_execstack=yes
+               libc_cv_z_initfirst=yes
+               libc_cv_z_nodelete=yes
+               libc_cv_z_nodlopen=yes
+               libc_cv_z_relro=yes
+               libc_mips_abi=${ABI}
+               libc_mips_float=$([[ $(tc-is-softfloat) == "yes" ]] && echo 
soft || echo hard)
+               # These libs don't have configure flags.
+               ac_cv_lib_audit_audit_log_user_avc_message=no
+               ac_cv_lib_cap_cap_init=no
+       )
+
+       einfo "Forcing cached settings:"
+       for v in "${vars[@]}" ; do
+               einfo " ${v}"
+               export ${v}
+       done
+
+       local headers_only_arch_CPPFLAGS=()
+
+       # Blow away some random CC settings that screw things up. #550192
+       if [[ -d ${S}/sysdeps/mips ]]; then
+               pushd "${S}"/sysdeps/mips >/dev/null
+               sed -i -e '/^CC +=/s:=.*:= -D_MIPS_SZPTR=32:' mips32/Makefile 
mips64/n32/Makefile || die
+               sed -i -e '/^CC +=/s:=.*:= -D_MIPS_SZPTR=64:' 
mips64/n64/Makefile || die
+
+               # Force the mips ABI to the default.  This is OK because the 
set of
+               # installed headers in this phase is the same between the 3 
ABIs.
+               # If this ever changes, this hack will break, but that's 
unlikely
+               # as glibc discourages that behavior.
+               # https://crbug.com/647033
+               sed -i -e 's:abiflag=.*:abiflag=_ABIO32:' preconfigure || die
+
+               popd >/dev/null
+       fi
+
+       case ${CTARGET} in
+       riscv*)
+               # RISC-V interrogates the compiler to determine which target to
+               # build.  If building the headers then we don't strictly need a
+               # RISC-V compiler, so the built-in definitions that are provided
+               # along with all RISC-V compiler might not exist.  This causes
+               # glibc's RISC-V preconfigure script to blow up.  Since we're 
just
+               # building the headers any value will actually work here, so 
just
+               # pick the standard one (rv64g/lp64d) to make the build scripts
+               # happy for now -- the headers are all the same anyway so it
+               # doesn't matter.
+               headers_only_arch_CPPFLAGS+=(
+                       -D__riscv_xlen=64
+                       -D__riscv_flen=64
+                       -D__riscv_float_abi_double=1
+                       -D__riscv_atomic=1
+               ) ;;
+       esac
+
+       local myconf=()
+       myconf+=(
+               --disable-sanity-checks
+               --enable-hacker-mode
+               --without-cvs
+               --disable-werror
+               --enable-bind-now
+               --build=${CBUILD_OPT:-${CBUILD}}
+               --host=${CTARGET_OPT:-${CTARGET}}
+               --with-headers=$(alt_build_headers)
+               --prefix="${EPREFIX}/usr"
+               ${EXTRA_ECONF}
+       )
+
+       # Nothing is compiled here which would affect the headers for the 
target.
+       # So forcing CC/CFLAGS is sane.
+       local headers_only_CC=$(tc-getBUILD_CC)
+       local headers_only_CFLAGS="-O1 -pipe"
+       local headers_only_CPPFLAGS="-U_FORTIFY_SOURCE 
${headers_only_arch_CPPFLAGS[*]}"
+       local headers_only_LDFLAGS=""
+       set -- "${S}"/configure "${myconf[@]}"
+       echo \
+               "CC=${headers_only_CC}" \
+               "CFLAGS=${headers_only_CFLAGS}" \
+               "CPPFLAGS=${headers_only_CPPFLAGS}" \
+               "LDFLAGS=${headers_only_LDFLAGS}" \
+               "$@"
+       CC=${headers_only_CC} \
+       CFLAGS=${headers_only_CFLAGS} \
+       CPPFLAGS=${headers_only_CPPFLAGS} \
+       LDFLAGS="" \
+       "$@" || die "failed to configure glibc"
+}
+
+do_src_configure() {
+       if just_headers ; then
+               glibc_headers_configure
+       else
+               glibc_do_configure nptl
+       fi
+}
+
+src_configure() {
+       foreach_abi do_src_configure
+}
+
+do_src_compile() {
+       emake -C "$(builddir nptl)" || die "make nptl for ${ABI} failed"
+}
+
+src_compile() {
+       if just_headers ; then
+               return
+       fi
+
+       foreach_abi do_src_compile
+}
+
+glibc_src_test() {
+       cd "$(builddir nptl)"
+       emake check
+}
+
+do_src_test() {
+       local ret=0
+
+       glibc_src_test
+       : $(( ret |= $? ))
+
+       return ${ret}
+}
+
+src_test() {
+       if just_headers ; then
+               return
+       fi
+
+       # Give tests more time to complete.
+       export TIMEOUTFACTOR=5
+
+       foreach_abi do_src_test || die "tests failed"
+}
+
+run_locale_gen() {
+       # if the host locales.gen contains no entries, we'll install everything
+       local root="$1"
+       local locale_list="${root}/etc/locale.gen"
+       if [[ -z $(locale-gen --list --config "${locale_list}") ]] ; then
+               ewarn "Generating all locales; edit /etc/locale.gen to save 
time/space"
+               locale_list="${root}/usr/share/i18n/SUPPORTED"
+       fi
+
+       locale-gen --jobs $(makeopts_jobs) --config "${locale_list}" \
+               --destdir "${root}"
+}
+
+glibc_do_src_install() {
+       local builddir=$(builddir nptl)
+       cd "${builddir}"
+
+       emake install_root="${D}$(alt_prefix)" install || die
+
+       # This version (2.26) provides some compatibility libraries for the 
NIS/NIS+ support
+       # which come without headers etc. Only needed for binary packages since 
the
+       # external net-libs/libnsl has increased soversion. Keep only versioned 
libraries.
+       find "${D}" -name "libnsl.a" -delete
+       find "${D}" -name "libnsl.so" -delete
+
+       # Normally upstream_pv is ${PV}. Live ebuilds are exception, there we 
need
+       # to infer upstream version:
+       # '#define VERSION "2.26.90"' -> '2.26.90'
+       local upstream_pv=$(sed -n -r 's/#define VERSION "(.*)"/\1/p' 
"${S}"/version.h)
+
+       if [[ -e ${ED}$(alt_usrlibdir)/libm-${upstream_pv}.a ]] ; then
+               # Move versioned .a file out of libdir to evade portage QA 
checks
+               # instead of using gen_usr_ldscript(). We fix ldscript as:
+               # "GROUP ( /usr/lib64/libm-<pv>.a ..." -> "GROUP ( 
/usr/lib64/glibc-<pv>/libm-<pv>.a ..."
+               sed -i "s@\(libm-${upstream_pv}.a\)@${P}/\1@" 
"${ED}"$(alt_usrlibdir)/libm.a || die
+               dodir $(alt_usrlibdir)/${P}
+               mv "${ED}"$(alt_usrlibdir)/libm-${upstream_pv}.a 
"${ED}"$(alt_usrlibdir)/${P}/libm-${upstream_pv}.a || die
+       fi
+
+       # We'll take care of the cache ourselves
+       rm -f "${ED}"/etc/ld.so.cache
+
+       # Everything past this point just needs to be done once ...
+       is_final_abi || return 0
+
+       # Make sure the non-native interp can be found on multilib systems even
+       # if the main library set isn't installed into the right place.  Maybe
+       # we should query the active gcc for info instead of hardcoding it ?
+       local i ldso_abi ldso_name
+       local ldso_abi_list=(
+               # x86
+               amd64   /lib64/ld-linux-x86-64.so.2
+               x32     /libx32/ld-linux-x32.so.2
+               x86     /lib/ld-linux.so.2
+               # mips
+               o32     /lib/ld.so.1
+               n32     /lib32/ld.so.1
+               n64     /lib64/ld.so.1
+               # powerpc
+               ppc     /lib/ld.so.1
+               ppc64   /lib64/ld64.so.1
+               # s390
+               s390    /lib/ld.so.1
+               s390x   /lib/ld64.so.1
+               # sparc
+               sparc32 /lib/ld-linux.so.2
+               sparc64 /lib64/ld-linux.so.2
+       )
+       case $(tc-endian) in
+       little)
+               ldso_abi_list+=(
+                       # arm
+                       arm64   /lib/ld-linux-aarch64.so.1
+               )
+               ;;
+       big)
+               ldso_abi_list+=(
+                       # arm
+                       arm64   /lib/ld-linux-aarch64_be.so.1
+               )
+               ;;
+       esac
+       if [[ ${SYMLINK_LIB} == "yes" ]] && [[ ! -e ${ED}/$(alt_prefix)/lib ]] 
; then
+               dosym $(get_abi_LIBDIR ${DEFAULT_ABI}) $(alt_prefix)/lib
+       fi
+       for (( i = 0; i < ${#ldso_abi_list[@]}; i += 2 )) ; do
+               ldso_abi=${ldso_abi_list[i]}
+               has ${ldso_abi} $(get_install_abis) || continue
+
+               ldso_name="$(alt_prefix)${ldso_abi_list[i+1]}"
+               if [[ ! -L ${ED}/${ldso_name} && ! -e ${ED}/${ldso_name} ]] ; 
then
+                       dosym ../$(get_abi_LIBDIR ${ldso_abi})/${ldso_name##*/} 
${ldso_name}
+               fi
+       done
+
+       # With devpts under Linux mounted properly, we do not need the pt_chown
+       # binary to be setuid.  This is because the default owners/perms will be
+       # exactly what we want.
+       if ! use suid ; then
+               find "${ED}" -name pt_chown -exec chmod -s {} +
+       fi
+
+       #################################################################
+       # EVERYTHING AFTER THIS POINT IS FOR NATIVE GLIBC INSTALLS ONLY #
+       # Make sure we install some symlink hacks so that when we build
+       # a 2nd stage cross-compiler, gcc finds the target system
+       # headers correctly.  See gcc/doc/gccinstall.info
+       if is_crosscompile ; then
+               # We need to make sure that /lib and /usr/lib always exists.
+               # gcc likes to use relative paths to get to its multilibs like
+               # /usr/lib/../lib64/.  So while we don't install any files into
+               # /usr/lib/, we do need it to exist.
+               keepdir $(alt_prefix)/lib
+               keepdir $(alt_prefix)/usr/lib
+
+               dosym usr/include $(alt_prefix)/sys-include
+               return 0
+       fi
+
+       # Files for Debian-style locale updating
+       dodir /usr/share/i18n
+       sed \
+               -e "/^#/d" \
+               -e "/SUPPORTED-LOCALES=/d" \
+               -e "s: \\\\::g" -e "s:/: :g" \
+               "${S}"/localedata/SUPPORTED > "${ED}"/usr/share/i18n/SUPPORTED \
+               || die "generating /usr/share/i18n/SUPPORTED failed"
+       cd "${WORKDIR}"/extra/locale
+       dosbin locale-gen
+       doman *.[0-8]
+       insinto /etc
+       doins locale.gen
+
+       # Make sure all the ABI's can find the locales and so we only
+       # have to generate one set
+       local a
+       keepdir /usr/$(get_libdir)/locale
+       for a in $(get_install_abis) ; do
+               if [[ ! -e ${ED}/usr/$(get_abi_LIBDIR ${a})/locale ]] ; then
+                       dosym ../$(get_libdir)/locale /usr/$(get_abi_LIBDIR 
${a})/locale
+               fi
+       done
+
+       cd "${S}"
+
+       # Install misc network config files
+       insinto /etc
+       doins nscd/nscd.conf posix/gai.conf nss/nsswitch.conf
+       doins "${WORKDIR}"/extra/etc/*.conf
+
+       if use nscd ; then
+               doinitd "$(prefixify_ro "${WORKDIR}"/extra/etc/nscd)"
+
+               local nscd_args=(
+                       -e "s:@PIDFILE@:$(strings "${ED}"/usr/sbin/nscd | grep 
nscd.pid):"
+               )
+
+               sed -i "${nscd_args[@]}" "${ED}"/etc/init.d/nscd
+
+               systemd_dounit nscd/nscd.service
+               systemd_newtmpfilesd nscd/nscd.tmpfiles nscd.conf
+       else
+               # Do this since extra/etc/*.conf above might have nscd.conf.
+               rm -f "${ED}"/etc/nscd.conf
+       fi
+
+       echo 'LDPATH="include ld.so.conf.d/*.conf"' > "${T}"/00glibc
+       doenvd "${T}"/00glibc
+
+       for d in BUGS ChangeLog CONFORMANCE FAQ NEWS NOTES PROJECTS README* ; do
+               [[ -s ${d} ]] && dodoc ${d}
+       done
+       dodoc -r ChangeLog.old
+
+       # Prevent overwriting of the /etc/localtime symlink.  We'll handle the
+       # creation of the "factory" symlink in pkg_postinst().
+       rm -f "${ED}"/etc/localtime
+
+       # Generate all locales if this is a native build as locale generation
+       if use compile-locales && ! is_crosscompile ; then
+               run_locale_gen "${ED}"
+       fi
+}
+
+glibc_headers_install() {
+       local builddir=$(builddir "headers")
+       cd "${builddir}"
+       emake install_root="${D}$(alt_prefix)" install-headers
+
+       insinto $(alt_headers)/gnu
+       doins "${S}"/include/gnu/stubs.h
+
+       # Make sure we install the sys-include symlink so that when
+       # we build a 2nd stage cross-compiler, gcc finds the target
+       # system headers correctly.  See gcc/doc/gccinstall.info
+       dosym usr/include $(alt_prefix)/sys-include
+}
+
+src_strip() {
+       # gdb is lame and requires some debugging information to remain in
+       # libpthread, so we need to strip it by hand.  libthread_db makes no
+       # sense stripped as it is only used when debugging.
+       local pthread=$(has splitdebug ${FEATURES} && echo "libthread_db" || 
echo "lib{pthread,thread_db}")
+       env \
+               -uRESTRICT \
+               CHOST=${CTARGET} \
+               STRIP_MASK="/*/{,tls/}${pthread}*" \
+               prepallstrip
+       # if user has stripping enabled and does not have split debug turned on,
+       # then leave the debugging sections in libpthread.
+       if ! has nostrip ${FEATURES} && ! has splitdebug ${FEATURES} ; then
+               ${STRIP:-${CTARGET}-strip} --strip-debug 
"${ED}"$(alt_prefix)/*/libpthread-*.so
+       fi
+}
+
+src_install() {
+       if just_headers ; then
+               export ABI=default
+               glibc_headers_install
+               return
+       fi
+
+       foreach_abi glibc_do_src_install
+       src_strip
+}
+
+# Simple test to make sure our new glibc isn't completely broken.
+# Make sure we don't test with statically built binaries since
+# they will fail.  Also, skip if this glibc is a cross compiler.
+#
+# If coreutils is built with USE=multicall, some of these files
+# will just be wrapper scripts, not actual ELFs we can test.
+glibc_sanity_check() {
+       cd / #228809
+
+       # We enter ${ED} so to avoid trouble if the path contains
+       # special characters; for instance if the path contains the
+       # colon character (:), then the linker will try to split it
+       # and look for the libraries in an unexpected place. This can
+       # lead to unsafe code execution if the generated prefix is
+       # within a world-writable directory.
+       # (e.g. /var/tmp/portage:${HOSTNAME})
+       pushd "${ED}"/$(get_libdir) >/dev/null
+
+       local x striptest
+       for x in cal date env free ls true uname uptime ; do
+               x=$(type -p ${x})
+               [[ -z ${x} || ${x} != ${EPREFIX}/* ]] && continue
+               striptest=$(LC_ALL="C" file -L ${x} 2>/dev/null) || continue
+               case ${striptest} in
+               *"statically linked"*) continue;;
+               *"ASCII text"*) continue;;
+               esac
+               # We need to clear the locale settings as the upgrade might want
+               # incompatible locale data.  This test is not for verifying 
that.
+               LC_ALL=C \
+               ./ld-*.so --library-path . ${x} > /dev/null \
+                       || die "simple run test (${x}) failed"
+       done
+
+       popd >/dev/null
+}
+
+pkg_preinst() {
+       # nothing to do if just installing headers
+       just_headers && return
+
+       # prepare /etc/ld.so.conf.d/ for files
+       mkdir -p "${EROOT}"/etc/ld.so.conf.d
+
+       # Default /etc/hosts.conf:multi to on for systems with small dbs.
+       if [[ $(wc -l < "${EROOT}"/etc/hosts) -lt 1000 ]] ; then
+               sed -i '/^multi off/s:off:on:' "${ED}"/etc/host.conf
+               einfo "Defaulting /etc/host.conf:multi to on"
+       fi
+
+       [[ ${ROOT} != "/" ]] && return 0
+       [[ -d ${ED}/$(get_libdir) ]] || return 0
+       [[ -z ${BOOTSTRAP_RAP} ]] && glibc_sanity_check
+}
+
+pkg_postinst() {
+       # nothing to do if just installing headers
+       just_headers && return
+
+       if ! tc-is-cross-compiler && [[ -x ${EROOT}/usr/sbin/iconvconfig ]] ; 
then
+               # Generate fastloading iconv module configuration file.
+               "${EROOT}"/usr/sbin/iconvconfig --prefix="${ROOT}"
+       fi
+
+       if ! is_crosscompile && [[ ${ROOT} == "/" ]] ; then
+               # Reload init ... if in a chroot or a diff init package, ignore
+               # errors from this step #253697
+               /sbin/telinit U 2>/dev/null
+
+               use compile-locales || run_locale_gen "${EROOT}"
+       fi
+
+       # Check for sanity of /etc/nsswitch.conf, take 2
+       if [[ -e ${EROOT}/etc/nsswitch.conf ]] && ! has_version 
sys-auth/libnss-nis ; then
+               local entry
+               for entry in passwd group shadow; do
+                       if egrep -q "^[ \t]*${entry}:.*nis" 
"${EROOT}"/etc/nsswitch.conf; then
+                               ewarn ""
+                               ewarn "Your ${EROOT}/etc/nsswitch.conf uses 
NIS. Support for that has been"
+                               ewarn "removed from glibc and is now provided 
by the package"
+                               ewarn "  sys-auth/libnss-nis"
+                               ewarn "Install it now to keep your NIS setup 
working."
+                               ewarn ""
+                       fi
+               done
+       fi
+}

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