commit:     880cd44162831d473af1c08b9ec604beb8f07153
Author:     Andreas K. Hüttel <dilfridge <AT> gentoo <DOT> org>
AuthorDate: Sun Apr 28 19:36:48 2019 +0000
Commit:     Andreas K. Hüttel <dilfridge <AT> gentoo <DOT> org>
CommitDate: Sun Apr 28 19:36:48 2019 +0000
URL:        https://gitweb.gentoo.org/proj/riscv.git/commit/?id=880cd441

sys-libs/glibc: Copy unmodified from main tree

Package-Manager: Portage-2.3.64, Repoman-2.3.12
Signed-off-by: Andreas K. Hüttel <dilfridge <AT> gentoo.org>

 sys-libs/glibc/Manifest                            |    3 +
 .../glibc-2.19-hardened-configure-picdefault.patch |   30 +
 .../2.19/glibc-2.19-ia64-gcc-4.8-reloc-hack.patch  |   32 +
 .../glibc/files/2.25/glibc-2.25-gentoo-chk_fail.c  |  303 ++++
 sys-libs/glibc/files/nscd.service                  |   15 +
 sys-libs/glibc/files/nscd.tmpfilesd                |    4 +
 sys-libs/glibc/glibc-2.29-r2.ebuild                | 1448 ++++++++++++++++++++
 sys-libs/glibc/metadata.xml                        |   21 +
 8 files changed, 1856 insertions(+)

diff --git a/sys-libs/glibc/Manifest b/sys-libs/glibc/Manifest
new file mode 100644
index 0000000..f75ed28
--- /dev/null
+++ b/sys-libs/glibc/Manifest
@@ -0,0 +1,3 @@
+DIST gcc-multilib-bootstrap-20180511.tar.xz 2392908 BLAKE2B 
f3cf614399368acd8908f60d894c6344a2fa09383b30c1633a0682bc668367c8a2f8c6fec2d41b6e2178d709a2bd8db57e8b2ab56ba263c7d56f819c15acd061
 SHA512 
98c766e913693ab42ff790557acde2a36a8001e2648046a685b21964200df8d4d52d8452d499c0068c6648284d086ce062c2d36e2c6c2fd8aacd232d193f2853
+DIST glibc-2.29-patches-3.tar.xz 35812 BLAKE2B 
90b8bc57b7a63f03617795c368b92e525eccfec462d638dbc25c581e5b7a2a72ffd5191842f5ac443a868cbc950838d7e5120e866d343a14b80c55dcbfa48f30
 SHA512 
4c9b78d9d1a8aa629418f2d758ef800857780b8a1fd8d3582b88348a513ca26ca7f6ac9110a8c6bae16949b360ba36840d184f42293cd4324760273592d1b438
+DIST glibc-2.29.tar.xz 16515488 BLAKE2B 
b754e6825176538a2b8ca03fce014f0d87d333dc4d038bf0cda5ee8a2f484cd3ce93ad78ec126737e093ab64b55ceedf04cd08aecb4f8041daaa329e99717afa
 SHA512 
146bc0769fe853d9edbf93cea7f74c5b3d84d69cb7614c62588e7acdecd1ec789a9d8949f3e8b99f8f36f2ccac740a003bed94f32b07817baf780b06cfeb6ed0

diff --git 
a/sys-libs/glibc/files/2.19/glibc-2.19-hardened-configure-picdefault.patch 
b/sys-libs/glibc/files/2.19/glibc-2.19-hardened-configure-picdefault.patch
new file mode 100644
index 0000000..341d8c5
--- /dev/null
+++ b/sys-libs/glibc/files/2.19/glibc-2.19-hardened-configure-picdefault.patch
@@ -0,0 +1,30 @@
+Prevent default-fPIE from confusing configure into thinking
+PIC code is default.  This causes glibc to build both PIC and
+non-PIC code as normal, which on the hardened compiler generates
+PIC and PIE.
+
+Patch by Kevin F. Quinn <kevqu...@gentoo.org>
+Fixed for glibc 2.19 by Magnus Granberg <zo...@ume.nu>
+
+--- configure.ac
++++ configure.ac
+@@ -2145,7 +2145,7 @@
+ # error PIC is default.
+ #endif
+ EOF
+-if eval "${CC-cc} -S conftest.c 2>&AS_MESSAGE_LOG_FD 1>&AS_MESSAGE_LOG_FD"; 
then
++if eval "${CC-cc} -fno-PIE -S conftest.c 2>&AS_MESSAGE_LOG_FD 
1>&AS_MESSAGE_LOG_FD"; then
+   libc_cv_pic_default=no
+ fi
+ rm -f conftest.*])
+--- configure
++++ configure
+@@ -7698,7 +7698,7 @@
+ # error PIC is default.
+ #endif
+ EOF
+-if eval "${CC-cc} -S conftest.c 2>&5 1>&5"; then
++if eval "${CC-cc} -fno-PIE -S conftest.c 2>&5 1>&5"; then
+   libc_cv_pic_default=no
+ fi
+ rm -f conftest.*

diff --git a/sys-libs/glibc/files/2.19/glibc-2.19-ia64-gcc-4.8-reloc-hack.patch 
b/sys-libs/glibc/files/2.19/glibc-2.19-ia64-gcc-4.8-reloc-hack.patch
new file mode 100644
index 0000000..72a616a
--- /dev/null
+++ b/sys-libs/glibc/files/2.19/glibc-2.19-ia64-gcc-4.8-reloc-hack.patch
@@ -0,0 +1,32 @@
+https://bugs.gentoo.org/503838
+http://gcc.gnu.org/PR60465
+https://sourceware.org/ml/libc-alpha/2015-12/msg00556.html
+https://trofi.github.io/posts/189-glibc-on-ia64-or-how-relocations-bootstrap.html
+
+newer versions of gcc generate relocations in the elf_get_dynamic_info func
+which glibc relies on to populate some info structs.  those structs are then
+used by ldso to process relocations in itself.  glibc requires that there are
+no relocations until that point (*after* elf_get_dynamic_info), so we end up
+crashing during elf_get_dynamic_info because the relocation has not yet been
+processed.
+
+this hack shuffles the code in a way that tricks gcc into not generating the
+relocation.  we need to figure out something better for upstream.
+
+--- a/elf/get-dynamic-info.h
++++ b/elf/get-dynamic-info.h
+@@ -66,8 +66,12 @@ elf_get_dynamic_info (struct link_map *l, ElfW(Dyn) *temp)
+       info[DT_VALTAGIDX (dyn->d_tag) + DT_NUM + DT_THISPROCNUM
+            + DT_VERSIONTAGNUM + DT_EXTRANUM] = dyn;
+       else if ((d_tag_utype) DT_ADDRTAGIDX (dyn->d_tag) < DT_ADDRNUM)
+-      info[DT_ADDRTAGIDX (dyn->d_tag) + DT_NUM + DT_THISPROCNUM
+-           + DT_VERSIONTAGNUM + DT_EXTRANUM + DT_VALNUM] = dyn;
++      {
++        d_tag_utype i =
++            DT_ADDRTAGIDX (dyn->d_tag) + DT_NUM + DT_THISPROCNUM
++            + DT_VERSIONTAGNUM + DT_EXTRANUM + DT_VALNUM;
++        info[i] = dyn;
++      }
+       ++dyn;
+     }
+ 

diff --git a/sys-libs/glibc/files/2.25/glibc-2.25-gentoo-chk_fail.c 
b/sys-libs/glibc/files/2.25/glibc-2.25-gentoo-chk_fail.c
new file mode 100644
index 0000000..2ef96b7
--- /dev/null
+++ b/sys-libs/glibc/files/2.25/glibc-2.25-gentoo-chk_fail.c
@@ -0,0 +1,303 @@
+/* Copyright (C) 2004-2014 Free Software Foundation, Inc.
+   Copyright (C) 2006-2014 Gentoo Foundation Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+/* Hardened Gentoo SSP and FORTIFY handler
+
+   A failure handler that does not use functions from the rest of glibc;
+   it uses the INTERNAL_SYSCALL methods directly.  This helps ensure no
+   possibility of recursion into the handler.
+
+   Direct all bug reports to http://bugs.gentoo.org/
+
+   People who have contributed significantly to the evolution of this file:
+   Ned Ludd - <solar[@]gentoo.org>
+   Alexander Gabert - <pappy[@]gentoo.org>
+   The PaX Team - <pageexec[@]freemail.hu>
+   Peter S. Mazinger - <ps.m[@]gmx.net>
+   Yoann Vandoorselaere - <yoann[@]prelude-ids.org>
+   Robert Connolly - <robert[@]linuxfromscratch.org>
+   Cory Visi <cory[@]visi.name>
+   Mike Frysinger <vapier[@]gentoo.org>
+   Magnus Granberg <zorry[@]gentoo.org>
+   Kevin F. Quinn - <kevquinn[@]gentoo.org>
+ */
+
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <signal.h>
+
+#include <sys/types.h>
+
+#include <sysdep-cancel.h>
+#include <sys/syscall.h>
+
+#include <kernel-features.h>
+
+#include <alloca.h>
+/* from sysdeps */
+#include <socketcall.h>
+/* for the stuff in bits/socket.h */
+#include <sys/socket.h>
+#include <sys/un.h>
+
+/* Sanity check on SYSCALL macro names - force compilation
+ * failure if the names used here do not exist
+ */
+#if !defined __NR_socketcall && !defined __NR_socket
+# error Cannot do syscall socket or socketcall
+#endif
+#if !defined __NR_socketcall && !defined __NR_connect
+# error Cannot do syscall connect or socketcall
+#endif
+#ifndef __NR_write
+# error Cannot do syscall write
+#endif
+#ifndef __NR_close
+# error Cannot do syscall close
+#endif
+#ifndef __NR_getpid
+# error Cannot do syscall getpid
+#endif
+#ifndef __NR_kill
+# error Cannot do syscall kill
+#endif
+#ifndef __NR_exit
+# error Cannot do syscall exit
+#endif
+#ifdef SSP_SMASH_DUMPS_CORE
+# define ENABLE_SSP_SMASH_DUMPS_CORE 1
+# if !defined _KERNEL_NSIG && !defined _NSIG
+#  error No _NSIG or _KERNEL_NSIG for rt_sigaction
+# endif
+# if !defined __NR_sigaction && !defined __NR_rt_sigaction
+#  error Cannot do syscall sigaction or rt_sigaction
+# endif
+/* Although rt_sigaction expects sizeof(sigset_t) - it expects the size
+ * of the _kernel_ sigset_t which is not the same as the user sigset_t.
+ * Most arches have this as _NSIG bits - mips has _KERNEL_NSIG bits for
+ * some reason.
+ */
+# ifdef _KERNEL_NSIG
+#  define _SSP_NSIG _KERNEL_NSIG
+# else
+#  define _SSP_NSIG _NSIG
+# endif
+#else
+# define _SSP_NSIG 0
+# define ENABLE_SSP_SMASH_DUMPS_CORE 0
+#endif
+
+/* Define DO_SIGACTION - default to newer rt signal interface but
+ * fallback to old as needed.
+ */
+#ifdef __NR_rt_sigaction
+# define DO_SIGACTION(signum, act, oldact) \
+       INLINE_SYSCALL(rt_sigaction, 4, signum, act, oldact, _SSP_NSIG/8)
+#else
+# define DO_SIGACTION(signum, act, oldact) \
+       INLINE_SYSCALL(sigaction, 3, signum, act, oldact)
+#endif
+
+/* Define DO_SOCKET/DO_CONNECT functions to deal with socketcall vs 
socket/connect */
+#if defined(__NR_socket) && defined(__NR_connect)
+# define USE_OLD_SOCKETCALL 0
+#else
+# define USE_OLD_SOCKETCALL 1
+#endif
+
+/* stub out the __NR_'s so we can let gcc optimize away dead code */
+#ifndef __NR_socketcall
+# define __NR_socketcall 0
+#endif
+#ifndef __NR_socket
+# define __NR_socket 0
+#endif
+#ifndef __NR_connect
+# define __NR_connect 0
+#endif
+#define DO_SOCKET(result, domain, type, protocol) \
+       do { \
+               if (USE_OLD_SOCKETCALL) { \
+                       socketargs[0] = domain; \
+                       socketargs[1] = type; \
+                       socketargs[2] = protocol; \
+                       socketargs[3] = 0; \
+                       result = INLINE_SYSCALL(socketcall, 2, SOCKOP_socket, 
socketargs); \
+               } else \
+                       result = INLINE_SYSCALL(socket, 3, domain, type, 
protocol); \
+       } while (0)
+#define DO_CONNECT(result, sockfd, serv_addr, addrlen) \
+       do { \
+               if (USE_OLD_SOCKETCALL) { \
+                       socketargs[0] = sockfd; \
+                       socketargs[1] = (unsigned long int)serv_addr; \
+                       socketargs[2] = addrlen; \
+                       socketargs[3] = 0; \
+                       result = INLINE_SYSCALL(socketcall, 2, SOCKOP_connect, 
socketargs); \
+               } else \
+                       result = INLINE_SYSCALL(connect, 3, sockfd, serv_addr, 
addrlen); \
+       } while (0)
+
+#ifndef _PATH_LOG
+# define _PATH_LOG "/dev/log"
+#endif
+
+static const char path_log[] = _PATH_LOG;
+
+/* For building glibc with SSP switched on, define __progname to a
+ * constant if building for the run-time loader, to avoid pulling
+ * in more of libc.so into ld.so
+ */
+#ifdef IS_IN_rtld
+static const char *__progname = "<ldso>";
+#else
+extern const char *__progname;
+#endif
+
+#ifdef GENTOO_SSP_HANDLER
+# define ERROR_MSG "stack smashing"
+#else
+# define ERROR_MSG "buffer overflow"
+#endif
+
+/* Common handler code, used by chk_fail
+ * Inlined to ensure no self-references to the handler within itself.
+ * Data static to avoid putting more than necessary on the stack,
+ * to aid core debugging.
+ */
+__attribute__ ((__noreturn__, __always_inline__))
+static inline void
+__hardened_gentoo_fail(void)
+{
+#define MESSAGE_BUFSIZ 512
+       static pid_t pid;
+       static int plen, i, hlen;
+       static char message[MESSAGE_BUFSIZ];
+       /* <11> is LOG_USER|LOG_ERR. A dummy date for loggers to skip over. */
+       static const char msg_header[] = "<11>" __DATE__ " " __TIME__ " 
glibc-gentoo-hardened-check: ";
+       static const char msg_ssd[] = "*** " ERROR_MSG " detected ***: ";
+       static const char msg_terminated[] = " terminated; ";
+       static const char msg_report[] = "report to " REPORT_BUGS_TO "\n";
+       static const char msg_unknown[] = "<unknown>";
+       static int log_socket, connect_result;
+       static struct sockaddr_un sock;
+       static unsigned long int socketargs[4];
+
+       /* Build socket address */
+       sock.sun_family = AF_UNIX;
+       i = 0;
+       while (path_log[i] != '\0' && i < sizeof(sock.sun_path) - 1) {
+               sock.sun_path[i] = path_log[i];
+               ++i;
+       }
+       sock.sun_path[i] = '\0';
+
+       /* Try SOCK_DGRAM connection to syslog */
+       connect_result = -1;
+       DO_SOCKET(log_socket, AF_UNIX, SOCK_DGRAM, 0);
+       if (log_socket != -1)
+               DO_CONNECT(connect_result, log_socket, &sock, sizeof(sock));
+       if (connect_result == -1) {
+               if (log_socket != -1)
+                       INLINE_SYSCALL(close, 1, log_socket);
+               /* Try SOCK_STREAM connection to syslog */
+               DO_SOCKET(log_socket, AF_UNIX, SOCK_STREAM, 0);
+               if (log_socket != -1)
+                       DO_CONNECT(connect_result, log_socket, &sock, 
sizeof(sock));
+       }
+
+       /* Build message.  Messages are generated both in the old style and new 
style,
+        * so that log watchers that are configured for the old-style message 
continue
+        * to work.
+        */
+#define strconcat(str) \
+       ({ \
+               i = 0; \
+               while ((str[i] != '\0') && ((i + plen) < (MESSAGE_BUFSIZ - 1))) 
{ \
+                       message[plen + i] = str[i]; \
+                       ++i; \
+               } \
+               plen += i; \
+       })
+
+       /* Tersely log the failure */
+       plen = 0;
+       strconcat(msg_header);
+       hlen = plen;
+       strconcat(msg_ssd);
+       if (__progname != NULL)
+               strconcat(__progname);
+       else
+               strconcat(msg_unknown);
+       strconcat(msg_terminated);
+       strconcat(msg_report);
+
+       /* Write out error message to STDERR, to syslog if open */
+       INLINE_SYSCALL(write, 3, STDERR_FILENO, message + hlen, plen - hlen);
+       if (connect_result != -1) {
+               INLINE_SYSCALL(write, 3, log_socket, message, plen);
+               INLINE_SYSCALL(close, 1, log_socket);
+       }
+
+       /* Time to kill self since we have no idea what is going on */
+       pid = INLINE_SYSCALL(getpid, 0);
+
+       if (ENABLE_SSP_SMASH_DUMPS_CORE) {
+               /* Remove any user-supplied handler for SIGABRT, before using 
it. */
+#if 0
+               /*
+                * Note: Disabled because some programs catch & process their
+                * own crashes.  We've already enabled this code path which
+                * means we want to let core dumps happen.
+                */
+               static struct sigaction default_abort_act;
+               default_abort_act.sa_handler = SIG_DFL;
+               default_abort_act.sa_sigaction = NULL;
+               __sigfillset(&default_abort_act.sa_mask);
+               default_abort_act.sa_flags = 0;
+               if (DO_SIGACTION(SIGABRT, &default_abort_act, NULL) == 0)
+#endif
+                       INLINE_SYSCALL(kill, 2, pid, SIGABRT);
+       }
+
+       /* SIGKILL is only signal which cannot be caught */
+       INLINE_SYSCALL(kill, 2, pid, SIGKILL);
+
+       /* In case the kill didn't work, exit anyway.
+        * The loop prevents gcc thinking this routine returns.
+        */
+       while (1)
+               INLINE_SYSCALL(exit, 1, 137);
+}
+
+__attribute__ ((__noreturn__))
+#ifdef GENTOO_SSP_HANDLER
+void __stack_chk_fail(void)
+#else
+void __chk_fail(void)
+#endif
+{
+       __hardened_gentoo_fail();
+}
+
+#ifdef GENTOO_SSP_HANDLER
+strong_alias (__stack_chk_fail, __stack_chk_fail_local)
+#endif

diff --git a/sys-libs/glibc/files/nscd.service 
b/sys-libs/glibc/files/nscd.service
new file mode 100644
index 0000000..25a3b1d
--- /dev/null
+++ b/sys-libs/glibc/files/nscd.service
@@ -0,0 +1,15 @@
+[Unit]
+Description=Name Service Cache Daemon
+After=network.target
+
+[Service]
+ExecStart=/usr/sbin/nscd -F
+ExecStop=/usr/sbin/nscd --shutdown
+ExecReload=/usr/sbin/nscd -i passwd
+ExecReload=/usr/sbin/nscd -i group
+ExecReload=/usr/sbin/nscd -i hosts
+ExecReload=/usr/sbin/nscd -i services
+Restart=always
+
+[Install]
+WantedBy=multi-user.target

diff --git a/sys-libs/glibc/files/nscd.tmpfilesd 
b/sys-libs/glibc/files/nscd.tmpfilesd
new file mode 100644
index 0000000..52edbba
--- /dev/null
+++ b/sys-libs/glibc/files/nscd.tmpfilesd
@@ -0,0 +1,4 @@
+# Configuration to create /run/nscd directory
+# Used as part of systemd's tmpfiles
+
+d /run/nscd 0755 root root

diff --git a/sys-libs/glibc/glibc-2.29-r2.ebuild 
b/sys-libs/glibc/glibc-2.29-r2.ebuild
new file mode 100644
index 0000000..60641cf
--- /dev/null
+++ b/sys-libs/glibc/glibc-2.29-r2.ebuild
@@ -0,0 +1,1448 @@
+# Copyright 1999-2019 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=6
+
+PYTHON_COMPAT=( python3_{5,6,7} )
+
+inherit python-any-r1 prefix eutils eapi7-ver 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-${PATCH_VER}.tar.xz";
+SRC_URI+=" multilib? ( 
https://dev.gentoo.org/~dilfridge/distfiles/gcc-multilib-bootstrap-${GCC_BOOTSTRAP_VER}.tar.xz
 )"
+
+IUSE="audit caps cet compile-locales doc gd headers-only +multiarch multilib 
nscd profile selinux +ssp suid systemtap test 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,
+# and that gcc already contains the hardened patches.
+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}
+       ${PYTHON_DEPS}
+       >=app-misc/pax-utils-0.1.10
+       sys-devel/bison
+       !<sys-apps/sandbox-1.6
+       !<sys-apps/portage-2.1.2
+       !<sys-devel/bison-2.7
+       !<sys-devel/make-4
+       doc? ( sys-apps/texinfo )
+       test? ( >=net-dns/libidn2-2.0.5 )
+"
+RDEPEND="${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-6
+       )"
+       [[ ${CATEGORY} == *-linux* ]] && DEPEND+=" ${CATEGORY}/linux-headers"
+else
+       DEPEND+="
+               >=sys-devel/binutils-2.24
+               >=sys-devel/gcc-6
+               virtual/os-headers
+       "
+       RDEPEND+="
+               >=net-dns/libidn2-2.0.5
+               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 ver_test -ge 2.8 ; then
+                                               cpu="sparc64v2"
+                                       elif ver_test -ge 2.4 ; then
+                                               cpu="sparc64v"
+                                       elif ver_test -ge 2.2.3 ; then
+                                               cpu="sparc64b"
+                                       fi
+                                       ;;
+                               niagara)
+                                       if ver_test -ge 2.4 ; then
+                                               cpu="sparc64v"
+                                       elif ver_test -ge 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 ver_test -ge 2.8 ; then
+                                               cpu="sparcv9v2"
+                                       elif ver_test -ge 2.4 ; then
+                                               cpu="sparcv9v"
+                                       elif ver_test -ge 2.2.3 ; then
+                                               cpu="sparcv9b"
+                                       else
+                                               cpu="sparcv9"
+                                       fi
+                                       ;;
+                               niagara)
+                                       if ver_test -ge 2.4 ; then
+                                               cpu="sparcv9v"
+                                       elif ver_test -ge 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*'
+}
+
+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
+       ver_test ${bver} -ge ${nver}
+}
+
+# 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:-${DEFAULT_ABI:-default}}
+
+       if just_headers ; then
+               # Avoid mixing host's CC and target's CFLAGS_${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
+
+       # 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
+               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 [[ ${CTARGET} == *-linux* ]] ; then
+                       local run_kv build_kv want_kv
+
+                       run_kv=$(g_get_running_KV)
+                       build_kv=$(g_int_to_KV $(get_kheader_version))
+                       want_kv=${MIN_KERN_VER}
+
+                       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
+       fi
+}
+
+#
+# the phases
+#
+
+# pkg_pretend
+
+pkg_pretend() {
+       # All the checks...
+       einfo "Checking general environment sanity."
+       sanity_prechecks
+}
+
+pkg_setup() {
+       # see bug 682570
+       [[ -z ${BOOTSTRAP_RAP} ]] && python-any-r1_pkg_setup
+}
+
+# src_unpack
+
+src_unpack() {
+       # Consistency is not guaranteed between pkg_ and src_ ...
+       sanity_prechecks
+
+       use multilib && unpack 
gcc-multilib-bootstrap-${GCC_BOOTSTRAP_VER}.tar.xz
+
+       setup_env
+
+       if [[ -n ${EGIT_REPO_URI} ]] ; then
+               git-r3_src_unpack
+       else
+               unpack ${P}.tar.xz
+       fi
+
+       cd "${WORKDIR}" || die
+       unpack glibc-${RELEASE_VER}-patches-${PATCH_VER}.tar.xz
+}
+
+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}"
+
+       if is_crosscompile; then
+               # Assume worst-case bootstrap: glibc is buil first time
+               # when ${CTARGET}-g++ is not available yet. We avoid
+               # building auxiliary programs that require C++: bug #683074
+               # It should not affect final result.
+               export libc_cv_cxx_link_ok=no
+               # The line above has the same effect. We set CXX explicitly
+               # to make build logs less confusing.
+               export CXX=
+       fi
+       einfo " $(printf '%15s' 'Manual CXX:')   ${CXX}"
+
+       echo
+
+       local myconf=()
+
+       case ${CTARGET} in
+               m68k*)
+                       # setjmp() is not compatible with stack protection:
+                       # https://sourceware.org/PR24202
+                       myconf+=( --enable-stack-protector=no )
+                       ;;
+               powerpc-*)
+                       # Currently gcc on powerpc32 generates invalid code for
+                       # __builtin_return_address(0) calls. Normally programs
+                       # don't do that but malloc hooks in glibc do:
+                       # https://gcc.gnu.org/PR81996
+                       # https://bugs.gentoo.org/629054
+                       myconf+=( --enable-stack-protector=no )
+                       ;;
+               *)
+                       myconf+=( --enable-stack-protector=$(usex ssp all no) )
+                       ;;
+       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
+
+       # Enable Intel Control-flow Enforcement Technology on amd64 if requested
+       case ${CTARGET} in
+               x86_64-*) myconf+=( $(use_enable cet) ) ;;
+               *) ;;
+       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
+               # riscv
+               lp64d   /lib/ld-linux-riscv64-lp64d.so.1
+               lp64    /lib/ld-linux-riscv64-lp64.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
+
+       # HACK: If we're building for riscv, we need to additionally make sure 
that
+       # we can find the locale archive afterwards
+       case ${CTARGET} in
+               riscv*)
+                       if [[ ! -e ${ED}/usr/lib/locale ]] ; then
+                               dosym ../$(get_libdir)/locale /usr/lib/locale
+                       fi
+                       ;;
+               *) ;;
+       esac
+
+       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
+}

diff --git a/sys-libs/glibc/metadata.xml b/sys-libs/glibc/metadata.xml
new file mode 100644
index 0000000..002e981
--- /dev/null
+++ b/sys-libs/glibc/metadata.xml
@@ -0,0 +1,21 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE pkgmetadata SYSTEM "http://www.gentoo.org/dtd/metadata.dtd";>
+<pkgmetadata>
+<maintainer type="project">
+ <email>toolch...@gentoo.org</email>
+ <name>Gentoo Toolchain Project</name>
+</maintainer>
+<use>
+ <flag name="cet">Enable Intel Control-flow Enforcement Technology (needs 
binutils 2.29 and gcc 8)</flag>
+ <flag name="compile-locales">build *all* locales in src_install; this is 
generally meant for stage building only as it ignores /etc/locale.gen file and 
can be pretty slow</flag>
+ <flag name="gd">build memusage and memusagestat tools</flag>
+ <flag name="multiarch">enable optimizations for multiple CPU architectures 
(detected at runtime)</flag>
+ <flag name="nscd">Build, and enable support for, the Name Service Cache 
Daemon</flag>
+ <flag name="ssp">protect stack of glibc internals</flag>
+ <flag name="suid">Make internal pt_chown helper setuid -- not needed if using 
Linux and have /dev/pts mounted with gid=5</flag>
+ <flag name="systemtap">enable systemtap static probe points</flag>
+</use>
+<upstream>
+ <remote-id type="cpe">cpe:/a:gnu:glibc</remote-id>
+</upstream>
+</pkgmetadata>

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