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|
# Copyright 1999-2023 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2
EAPI=8
# Bumping notes: https://wiki.gentoo.org/wiki/Project:Toolchain/sys-libs/glibc
# Please read & adapt the page as necessary if obsolete.
PYTHON_COMPAT=( python3_{9..11} )
TMPFILES_OPTIONAL=1
inherit python-any-r1 prefix preserve-libs toolchain-funcs flag-o-matic gnuconfig \
multilib systemd multiprocessing tmpfiles
DESCRIPTION="GNU libc C library"
HOMEPAGE="https://www.gnu.org/software/libc/"
LICENSE="LGPL-2.1+ BSD HPND ISC inner-net rc PCRE"
SLOT="2.2"
EMULTILIB_PKG="true"
# Gentoo patchset (ignored for live ebuilds)
PATCH_VER=1
PATCH_DEV=dilfridge
# gcc mulitilib bootstrap files version
GCC_BOOTSTRAP_VER=20201208
# systemd integration version
GLIBC_SYSTEMD_VER=20210729
# Minimum kernel version that glibc requires
MIN_KERN_VER="3.2.0"
# Minimum pax-utils version needed (which contains any new syscall changes for
# its seccomp filter!). Please double check this!
MIN_PAX_UTILS_VER="1.3.3"
if [[ ${PV} == 9999* ]]; then
inherit git-r3
else
#KEYWORDS="~alpha ~amd64 ~arm ~arm64 ~hppa ~ia64 ~loong ~m68k ~mips ~ppc ~ppc64 ~riscv ~s390 ~sparc ~x86"
SRC_URI="mirror://gnu/glibc/${P}.tar.xz"
SRC_URI+=" https://dev.gentoo.org/~${PATCH_DEV}/distfiles/${P}-patches-${PATCH_VER}.tar.xz"
fi
SRC_URI+=" multilib-bootstrap? ( https://dev.gentoo.org/~dilfridge/distfiles/gcc-multilib-bootstrap-${GCC_BOOTSTRAP_VER}.tar.xz )"
SRC_URI+=" systemd? ( https://gitweb.gentoo.org/proj/toolchain/glibc-systemd.git/snapshot/glibc-systemd-${GLIBC_SYSTEMD_VER}.tar.gz )"
IUSE="audit caps cet compile-locales +crypt custom-cflags doc gd hash-sysv-compat headers-only +multiarch multilib multilib-bootstrap nscd perl profile selinux +ssp stack-realign +static-libs suid systemd systemtap test vanilla"
# Here's how the cross-compile logic breaks down ...
# CTARGET - machine that will target the binaries
# CHOST - machine that will host the binaries
# CBUILD - machine that will build the binaries
# If CTARGET != CHOST, it means you want a libc for cross-compiling.
# If CHOST != CBUILD, it means you want to cross-compile the libc.
# CBUILD = CHOST = CTARGET - native build/install
# CBUILD != (CHOST = CTARGET) - cross-compile a native build
# (CBUILD = CHOST) != CTARGET - libc for cross-compiler
# CBUILD != CHOST != CTARGET - cross-compile a libc for a cross-compiler
# For install paths:
# CHOST = CTARGET - install into /
# CHOST != CTARGET - install into /usr/CTARGET/
#
export CBUILD=${CBUILD:-${CHOST}}
export CTARGET=${CTARGET:-${CHOST}}
if [[ ${CTARGET} == ${CHOST} ]] ; then
if [[ ${CATEGORY} == cross-* ]] ; then
export CTARGET=${CATEGORY#cross-}
fi
fi
# Note [Disable automatic stripping]
# Disabling automatic stripping for a few reasons:
# - portage's attempt to strip breaks non-native binaries at least on
# arm: bug #697428
# - portage's attempt to strip libpthread.so.0 breaks gdb thread
# enumeration: bug #697910. This is quite subtle:
# * gdb uses glibc's libthread_db-1.0.so to enumerate threads.
# * libthread_db-1.0.so needs access to libpthread.so.0 local symbols
# via 'ps_pglobal_lookup' symbol defined in gdb.
# * 'ps_pglobal_lookup' uses '.symtab' section table to resolve all
# known symbols in 'libpthread.so.0'. Specifically 'nptl_version'
# (unexported) is used to sanity check compatibility before enabling
# debugging.
# Also see https://sourceware.org/gdb/wiki/FAQ#GDB_does_not_see_any_threads_besides_the_one_in_which_crash_occurred.3B_or_SIGTRAP_kills_my_program_when_I_set_a_breakpoint
# * normal 'strip' command trims '.symtab'
# Thus our main goal here is to prevent 'libpthread.so.0' from
# losing it's '.symtab' entries.
# As Gentoo's strip does not allow us to pass less aggressive stripping
# options and does not check the machine target we strip selectively.
# 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.
# Lastly, let's avoid some openssh nastiness, bug 708224, as
# convenience to our users.
# gzip, grep, awk are needed by locale-gen, bug 740750; depending on the
# compile-locales useflag either in src_install or in pkg_postinst.
IDEPEND="
!compile-locales? ( sys-apps/locale-gen )
"
BDEPEND="
${PYTHON_DEPS}
>=app-misc/pax-utils-${MIN_PAX_UTILS_VER}
sys-devel/bison
compile-locales? ( sys-apps/locale-gen )
doc? (
dev-lang/perl
sys-apps/texinfo
)
test? (
dev-lang/perl
>=net-dns/libidn2-2.3.0
)
"
COMMON_DEPEND="
gd? ( media-libs/gd:2= )
nscd? ( selinux? (
audit? ( sys-process/audit )
caps? ( sys-libs/libcap )
) )
suid? ( caps? ( sys-libs/libcap ) )
selinux? ( sys-libs/libselinux )
systemtap? ( dev-util/systemtap )
"
DEPEND="${COMMON_DEPEND}
"
RDEPEND="${COMMON_DEPEND}
sys-apps/locale-gen
!<app-misc/pax-utils-${MIN_PAX_UTILS_VER}
perl? ( dev-lang/perl )
"
RESTRICT="!test? ( test )"
if [[ ${CATEGORY} == cross-* ]] ; then
BDEPEND+=" !headers-only? (
>=${CATEGORY}/binutils-2.27
>=${CATEGORY}/gcc-6.2
)"
[[ ${CATEGORY} == *-linux* ]] && DEPEND+=" ${CATEGORY}/linux-headers"
else
BDEPEND+="
>=sys-devel/binutils-2.27
>=sys-devel/gcc-6.2
"
DEPEND+=" virtual/os-headers "
RDEPEND+="
>=net-dns/libidn2-2.3.0
vanilla? ( !sys-libs/timezone-data )
"
PDEPEND+=" !vanilla? ( sys-libs/timezone-data )"
fi
# Ignore tests whitelisted below
GENTOO_GLIBC_XFAIL_TESTS="${GENTOO_GLIBC_XFAIL_TESTS:-yes}"
# The following tests fail due to the Gentoo build system and are thus
# executed but ignored:
XFAIL_TEST_LIST=(
# buggy test, assumes /dev/ and /dev/null on a single filesystem
# 'mount --bind /dev/null /chroot/dev/null' breaks it.
# https://sourceware.org/PR25909
tst-support_descriptors
# The following tests fail only inside portage
# https://bugs.gentoo.org/831267
tst-system
tst-strerror
tst-strsignal
)
#
# Small helper functions
#
dump_build_environment() {
einfo ==== glibc build environment ========================================================
local v
for v in ABI CBUILD CHOST CTARGET CBUILD_OPT CTARGET_OPT CC CXX CPP LD {AS,C,CPP,CXX,LD}FLAGS MAKEINFO NM AR AS STRIP RANLIB OBJCOPY STRINGS OBJDUMP READELF; do
einfo " $(printf '%15s' ${v}:) ${!v}"
done
einfo =====================================================================================
}
is_crosscompile() {
[[ ${CHOST} != ${CTARGET} ]]
}
just_headers() {
is_crosscompile && use headers-only
}
alt_prefix() {
is_crosscompile && echo /usr/${CTARGET}
}
# This prefix is applicable to CHOST when building against this
# glibc. It is baked into the library at configure time.
host_eprefix() {
is_crosscompile || echo "${EPREFIX}"
}
# This prefix is applicable to CBUILD when building against this
# glibc. It determines the destination path at install time.
build_eprefix() {
is_crosscompile && echo "${EPREFIX}"
}
# 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 ${ALT_BUILD_HEADERS} ]] ; then
ALT_BUILD_HEADERS="$(host_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' "$*" > glibc-test.c
# We assume CC is already set up.
nonfatal emake glibc-test
ret=$?
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 $(tc-arch) in
x86)
# -march needed for #185404 #199334
# TODO: When creating the first glibc cross-compile, this test will
# always fail as it does a full link which in turn requires glibc.
# Probably also applies when changing multilib profile settings (e.g.
# enabling x86 when the profile was amd64-only previously).
# We could change main to _start and pass -nostdlib here so that we
# only test the gcc code compilation. Or we could do a compile and
# then look for the symbol via scanelf.
if ! do_compile_test "" 'void f(int i, void *p) {if (__sync_fetch_and_add(&i, 1)) f(i, p);}\nint main(){return 0;}\n'; then
local t=${CTARGET_OPT:-${CTARGET}}
t=${t%%-*}
filter-flags '-march=*'
export CFLAGS="-march=${t} ${CFLAGS}"
einfo "Auto adding -march=${t} to CFLAGS #185404"
fi
# For compatibility with older binaries at slight performance cost.
use stack-realign && export CFLAGS+=" -mstackrealign"
;;
amd64)
# -march needed for #185404 #199334
# TODO: See cross-compile issues listed above for x86.
if [[ ${ABI} == x86 ]]; then
if ! do_compile_test "${CFLAGS_x86}" 'void f(int i, void *p) {if (__sync_fetch_and_add(&i, 1)) f(i, p);}\nint main(){return 0;}\n'; 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=${t} to CFLAGS_x86 #185404 (ABI=${ABI})"
fi
# For compatibility with older binaries at slight performance cost.
use stack-realign && export CFLAGS_x86+=" -mstackrealign"
# Workaround for bug #823780.
# Need to save/restore CC because earlier on, we stuff it full of CFLAGS, and tc-getCPP doesn't like that.
CC_mangled=${CC}
CC=${glibc__GLIBC_CC}
if tc-is-gcc && (($(gcc-major-version) == 11)) && (($(gcc-minor-version) <= 2)) && (($(gcc-micro-version) == 0)) ; then
export CFLAGS_x86="${CFLAGS_x86} -mno-avx512f"
einfo "Auto adding -mno-avx512f to CFLAGS_x86 for buggy GCC version (bug #823780) (ABI=${ABI})"
fi
CC=${CC_mangled}
fi
;;
mips)
# The mips abi cannot support the GNU style hashes. #233233
filter-ldflags -Wl,--hash-style=gnu -Wl,--hash-style=both
;;
ppc|ppc64)
# Many arch-specific implementations do not work on ppc with
# cache-block not equal to 128 bytes. This breaks memset:
# https://sourceware.org/PR26522
# https://bugs.gentoo.org/737996
# Use default -mcpu=. For ppc it means non-multiarch setup.
filter-flags '-mcpu=*'
;;
sparc)
# Both sparc and sparc64 can use -fcall-used-g6. -g7 is bad, though.
filter-flags "-fcall-used-g7"
append-flags "-fcall-used-g6"
local cpu
case ${CTARGET} in
sparc64-*)
cpu="sparc64"
case $(get-flag mcpu) in
v9)
# 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
append-flags "-Wa,-xarch=v9a"
;;
esac
;;
sparc-*)
case $(get-flag mcpu) in
v8|supersparc|hypersparc|leon|leon3)
cpu="sparcv8"
;;
*)
cpu="sparcv9"
;;
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=${ASFLAGS_BASE}
# Allow users to explicitly avoid flag sanitization via
# USE=custom-cflags.
if ! use custom-cflags; then
# Over-zealous CFLAGS can often cause problems. What may work for one
# person may not work for another. To avoid a large influx of bugs
# relating to failed builds, we strip most CFLAGS out to ensure as few
# problems as possible.
strip-flags
filter-lto
# Lock glibc at -O2; we want to be conservative here.
filter-flags '-O?'
append-flags -O2
fi
strip-unsupported-flags
filter-flags -m32 -m64 '-mabi=*'
# glibc aborts if rpath is set by LDFLAGS
filter-ldflags '-Wl,-rpath=*'
# ld can't use -r & --relax at the same time, bug #788901
# https://sourceware.org/PR27837
filter-ldflags '-Wl,--relax'
# some weird software relies on sysv hashes in glibc, bug 863863, bug 864100
# we have to do that here already so mips can filter it out again :P
if use hash-sysv-compat ; then
append-ldflags '-Wl,--hash-style=both'
fi
# #492892
filter-flags -frecord-gcc-switches
# #898098
filter-flags -fno-builtin
# #829583
filter-lfs-flags
unset CBUILD_OPT CTARGET_OPT
if use multilib ; then
CTARGET_OPT=$(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
# glibc's headers disallow -O0 and fail at build time:
# include/libc-symbols.h:75:3: #error "glibc cannot be compiled without optimization"
replace-flags -O0 -O1
# glibc handles this internally already where it's appropriate;
# can't always have SSP when we're the ones setting it up, etc
filter-flags '-fstack-protector*'
# Similar issues as with SSP. Can't inject yourself that early.
filter-flags '-fsanitize=*'
# See end of bug #830454; we handle this via USE=cet
filter-flags '-fcf-protection=*'
# When bootstrapping, we may have a situation where
# CET-enabled gcc from seed is used to build CET-disabled
# glibc. As such, gcc implicitly enables CET if no
# -fcf-protection flag is passed. For a typical package it
# should not be a problem, but for glibc it matters as it is
# dealing with CET in ld.so. So if CET is supposed to be
# disabled for glibc, be explicit about it.
if (use amd64 || use x86) && ! use cet; then
append-flags '-fcf-protection=none'
fi
}
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
# Glibc does not work with gold (for various reasons) #269274.
tc-ld-disable-gold
if use doc ; then
export MAKEINFO=makeinfo
else
export MAKEINFO=/dev/null
fi
# Reset CC and CXX to the value at start of emerge
export CC=${glibc__ORIG_CC:-${CC:-$(tc-getCC ${CTARGET})}}
export CXX=${glibc__ORIG_CXX:-${CXX:-$(tc-getCXX ${CTARGET})}}
# and make sure glibc__ORIG_CC and glibc__ORIG_CXX is defined now.
export glibc__ORIG_CC=${CC}
export glibc__ORIG_CXX=${CXX}
if tc-is-clang && ! use custom-cflags && ! is_crosscompile ; then
export glibc__force_gcc=yes
# once this is toggled on, it needs to stay on, since with CPP manipulated
# tc-is-clang does not work correctly anymore...
fi
if [[ ${glibc__force_gcc} == "yes" ]] ; then
# If we are running in an otherwise clang/llvm environment, we need to
# recover the proper gcc and binutils settings here, at least until glibc
# is finally building with clang. So let's override everything that is
# set in the clang profiles.
# Want to shoot yourself into the foot? Set USE=custom-cflags, that's always
# a good start into that direction.
# Also, if you're crosscompiling, let's assume you know what you are doing.
# Hopefully.
# Last, we need the settings of the *build* environment, not of the
# target environment...
local current_binutils_path=$(env ROOT="${BROOT}" binutils-config -B)
local current_gcc_path=$(env ROOT="${BROOT}" gcc-config -B)
einfo "Overriding clang configuration, since it won't work here"
export CC="${current_gcc_path}/gcc"
export CPP="${current_gcc_path}/cpp"
export CXX="${current_gcc_path}/g++"
export LD="${current_binutils_path}/ld.bfd"
export AR="${current_binutils_path}/ar"
export AS="${current_binutils_path}/as"
export NM="${current_binutils_path}/nm"
export STRIP="${current_binutils_path}/strip"
export RANLIB="${current_binutils_path}/ranlib"
export OBJCOPY="${current_binutils_path}/objcopy"
export STRINGS="${current_binutils_path}/strings"
export OBJDUMP="${current_binutils_path}/objdump"
export READELF="${current_binutils_path}/readelf"
export ADDR2LINE="${current_binutils_path}/addr2line"
# do we need to also do flags munging here? yes! at least...
filter-flags '-fuse-ld=*'
filter-flags '-D_FORTIFY_SOURCE=*'
else
# this is the "normal" case
export CC="$(tc-getCC ${CTARGET})"
export CXX="$(tc-getCXX ${CTARGET})"
# Always use tuple-prefixed toolchain. For non-native ABI glibc's configure
# can't detect them automatically due to ${CHOST} mismatch and fallbacks
# to unprefixed tools. Similar to multilib.eclass:multilib_toolchain_setup().
export NM="$(tc-getNM ${CTARGET})"
export READELF="$(tc-getREADELF ${CTARGET})"
fi
# We need to export CFLAGS with abi information in them because glibc's
# configure script checks CFLAGS for some targets (like mips). Keep
# around the original clean value to avoid appending multiple ABIs on
# top of each other. (Why does the comment talk about CFLAGS if the code
# acts on CC?)
export glibc__GLIBC_CC=${CC}
export glibc__GLIBC_CXX=${CXX}
export glibc__abi_CFLAGS="$(get_abi_CFLAGS)"
# 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="${glibc__GLIBC_CC} ${glibc__abi_CFLAGS} ${CFLAGS} ${LDFLAGS}"
# Some of the tests are written in C++, so we need to force our multlib abis in, bug 623548
export CXX="${glibc__GLIBC_CXX} ${glibc__abi_CFLAGS} ${CFLAGS}"
if is_crosscompile; then
# Assume worst-case bootstrap: glibc is buil first time
# when ${CTARGET}-g++ is not available yet. We avoid
# building auxiliary programs that require C++: bug #683074
# It should not affect final result.
export libc_cv_cxx_link_ok=no
# The line above has the same effect. We set CXX explicitly
# to make build logs less confusing.
export CXX=
fi
}
foreach_abi() {
setup_env
local ret=0
local abilist=""
if use multilib ; then
abilist=$(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+=" (patchset ${PATCH_VER})"
echo "${b}"
}
# 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 ${CTARGET}) -I "$(build_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() {
# Prevent native builds from downgrading
if [[ ${MERGE_TYPE} != "buildonly" ]] && \
[[ -z ${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."
[[ ${I_ALLOW_TO_BREAK_MY_SYSTEM} = yes ]] || 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
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
# 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 && [[ ${MERGE_TYPE} != "binary" ]] ; then
if [[ -d "${ESYSROOT}"/usr/lib/include ]] ; then
# bug #833620, bug #643302
eerror "Found ${ESYSROOT}/usr/lib/include directory!"
eerror "This is known to break glibc's build."
eerror "Please backup its contents then remove the directory."
die "Found directory (${ESYSROOT}/usr/lib/include) which will break build (bug #833620)!"
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
# Do not run this check for pkg_pretend, just pkg_setup and friends (if we ever get used there).
# It's plausible (seen it in the wild) that Portage will (correctly) schedule a linux-headers
# upgrade before glibc, but because pkg_pretend gets run before any packages are merged at all (not
# just glibc), the whole emerge gets aborted without a good reason. We probably don't
# need to run this check at all given we have a dependency on the right headers,
# but let's leave it as-is for now.
if [[ ${EBUILD_PHASE_FUNC} != pkg_pretend ]] ; then
ebegin "Checking linux-headers version (${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
fi
}
upgrade_warning() {
if [[ ${MERGE_TYPE} != buildonly && -n ${REPLACING_VERSIONS} && -z ${ROOT} ]]; then
local oldv newv=$(ver_cut 1-2 ${PV})
for oldv in ${REPLACING_VERSIONS}; do
if ver_test ${oldv} -lt ${newv}; then
ewarn "After upgrading glibc, please restart all running processes."
ewarn "Be sure to include init (telinit u) or systemd (systemctl daemon-reexec)."
ewarn "Alternatively, reboot your system."
ewarn "(See bug #660556, bug #741116, bug #823756, etc)"
break
fi
done
fi
}
#
# the phases
#
# pkg_pretend
pkg_pretend() {
upgrade_warning
}
# pkg_setup
pkg_setup() {
# see bug 682570
[[ -z ${BOOTSTRAP_RAP} ]] && python-any-r1_pkg_setup
}
# src_unpack
src_unpack() {
setup_env
einfo "Checking general environment sanity."
sanity_prechecks
use multilib-bootstrap && unpack gcc-multilib-bootstrap-${GCC_BOOTSTRAP_VER}.tar.xz
if [[ ${PV} == 9999* ]] ; then
EGIT_REPO_URI="https://anongit.gentoo.org/git/proj/toolchain/glibc-patches.git"
EGIT_CHECKOUT_DIR=${WORKDIR}/patches-git
git-r3_src_unpack
mv patches-git/9999 patches || die
EGIT_REPO_URI="https://sourceware.org/git/glibc.git"
EGIT_CHECKOUT_DIR=${S}
git-r3_src_unpack
else
unpack ${P}.tar.xz
cd "${WORKDIR}" || die
unpack glibc-${PV}-patches-${PATCH_VER}.tar.xz
fi
cd "${WORKDIR}" || die
use systemd && unpack glibc-systemd-${GLIBC_SYSTEMD_VER}.tar.gz
}
# src_prepare
src_prepare() {
local patchsetname
if ! use vanilla ; then
if [[ ${PV} == 9999* ]] ; then
patchsetname="from git master"
else
patchsetname="${PV}-${PATCH_VER}"
fi
einfo "Applying Gentoo Glibc patchset ${patchsetname}"
eapply "${WORKDIR}"/patches
einfo "Done."
fi
default
gnuconfig_update
cd "${WORKDIR}" || die
find . -name configure -exec touch {} +
# Fix permissions on some of the scripts.
chmod u+x "${S}"/scripts/*.sh
cd "${S}" || die
}
# src_configure
glibc_do_configure() {
dump_build_environment
local myconf=()
# Use '=strong' instead of '=all' to protect only functions
# worth protecting from stack smashes.
myconf+=( --enable-stack-protector=$(usex ssp strong no) )
# 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|riscv|loong) ;;
# 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+=(
--disable-werror
--enable-bind-now
--build=${CBUILD_OPT:-${CBUILD}}
--host=${CTARGET_OPT:-${CTARGET}}
$(use_enable profile)
$(use_with gd)
--with-headers=$(build_eprefix)$(alt_build_headers)
--prefix="$(host_eprefix)/usr"
--sysconfdir="$(host_eprefix)/etc"
--localstatedir="$(host_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_enable crypt)
$(use_multiarch || echo --disable-multi-arch)
$(use_enable systemtap)
$(use_enable nscd)
# /usr/bin/mtrace has a Perl shebang. Gentoo Prefix QA checks fail if
# Perl hasn't been installed inside the prefix yet and configure picks
# up a Perl from outside the prefix instead. configure will fail to
# execute Perl during configure if we're cross-compiling a prefix, but
# it will just disable mtrace in that case.
# Note: mtrace is needed by the test suite.
ac_cv_path_PERL="$(usex perl "${EPREFIX}"/usr/bin/perl $(usex test "${EPREFIX}"/usr/bin/perl $(usex doc "${EPREFIX}"/usr/bin/perl no)))"
# locale data is arch-independent
# https://bugs.gentoo.org/753740
libc_cv_complocaledir='${exec_prefix}/lib/locale'
# -march= option tricks build system to infer too
# high ISA level: https://sourceware.org/PR27318
libc_cv_include_x86_isa_level=no
# Explicit override of https://sourceware.org/PR27991
# exposes a bug in glibc's configure:
# https://sourceware.org/PR27991
libc_cv_have_x86_lahf_sahf=no
libc_cv_have_x86_movbe=no
${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=$(usex caps || echo no)
# There is no configure option for this and we need to export it
# since the glibc build will re-run configure on itself
export libc_cv_rootsbindir="$(host_eprefix)/sbin"
export libc_cv_slibdir="$(host_eprefix)/$(get_libdir)"
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 ${GCC_BOOTSTRAP_VER} ]] && use multilib-bootstrap ; then
echo 'main(){}' > "${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 ${CTARGET} in
riscv*)
# RISC-V interrogates the compiler to determine which target to
# build. If building the headers then we don't strictly need a
# RISC-V compiler, so the built-in definitions that are provided
# along with all RISC-V compiler might not exist. This causes
# glibc's RISC-V preconfigure script to blow up. Since we're just
# building the headers any value will actually work here, so just
# pick the standard one (rv64g/lp64d) to make the build scripts
# happy for now -- the headers are all the same anyway so it
# doesn't matter.
headers_only_arch_CPPFLAGS+=(
-D__riscv_xlen=64
-D__riscv_flen=64
-D__riscv_float_abi_double=1
-D__riscv_atomic=1
) ;;
esac
local myconf=()
myconf+=(
--disable-sanity-checks
--enable-hacker-mode
--disable-werror
--enable-bind-now
--build=${CBUILD_OPT:-${CBUILD}}
--host=${CTARGET_OPT:-${CTARGET}}
--with-headers=$(build_eprefix)$(alt_build_headers)
--prefix="$(host_eprefix)/usr"
$(use_enable crypt)
${EXTRA_ECONF}
)
# Nothing is compiled here which would affect the headers for the target.
# So forcing CC/CFLAGS is sane.
local headers_only_CC=$(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
}
# src_compile
do_src_compile() {
emake -C "$(builddir nptl)"
}
src_compile() {
if just_headers ; then
return
fi
foreach_abi do_src_compile
}
# src_test
glibc_src_test() {
cd "$(builddir nptl)"
local myxfailparams=""
if [[ "${GENTOO_GLIBC_XFAIL_TESTS}" == "yes" ]] ; then
for myt in ${XFAIL_TEST_LIST[@]} ; do
myxfailparams+="test-xfail-${myt}=yes "
done
fi
# sandbox does not understand unshare() and prevents
# writes to /proc/, which makes many tests fail
# we give the tests a bit more time to avoid spurious
# bug reports on slow arches
SANDBOX_ON=0 LD_PRELOAD= TIMEOUTFACTOR=16 emake ${myxfailparams} check
}
src_test() {
if just_headers ; then
return
fi
foreach_abi glibc_src_test || die "tests failed"
}
# src_install
run_locale_gen() {
# if the host locales.gen contains no entries, we'll install everything
local root="$1"
local inplace=""
if [[ "${root}" == "--inplace-glibc" ]] ; then
inplace="--inplace-glibc"
root="$2"
fi
local locale_list="${root%/}/etc/locale.gen"
pushd "${ED}"/$(get_libdir) >/dev/null
if [[ -z $(locale-gen --list --config "${locale_list}") ]] ; then
[[ -z ${inplace} ]] && ewarn "Generating all locales; edit /etc/locale.gen to save time/space"
locale_list="${root%/}/usr/share/i18n/SUPPORTED"
fi
# bug 736794: we need to be careful with the parallelization... the number of
# processors saved in the environment of a binary package may differ strongly
# from the number of processes available during postinst
local mygenjobs="$(makeopts_jobs)"
if [[ "${EMERGE_FROM}" == "binary" ]] ; then
mygenjobs="$(nproc)"
fi
set -- locale-gen ${inplace} --jobs "${mygenjobs}" --config "${locale_list}" \
--destdir "${root}"
echo "$@"
"$@"
popd >/dev/null
}
glibc_do_src_install() {
local builddir=$(builddir nptl)
cd "${builddir}"
emake install_root="${D}/$(build_eprefix)$(alt_prefix)" install
# This version (2.26) provides some compatibility libraries for the NIS/NIS+ support
# which come without headers etc. Only needed for binary packages since the
# external net-libs/libnsl has increased soversion. Keep only versioned libraries.
find "${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)
# Avoid stripping binaries not targeted by ${CHOST}. Or else
# ${CHOST}-strip would break binaries build for ${CTARGET}.
is_crosscompile && dostrip -x /
# gdb thread introspection relies on local libpthreads symbols. stripping breaks it
# See Note [Disable automatic stripping]
dostrip -x $(alt_libdir)/libpthread-${upstream_pv}.so
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 configure toolchains for standalone prefix systems with a sysroot,
# which is prepended to paths in ld scripts, so strip the prefix from these.
# Before: GROUP ( /foo/lib64/libc.so.6 /foo/usr/lib64/libc_nonshared.a AS_NEEDED ( /foo/lib64/ld-linux-x86-64.so.2 ) )
# After: GROUP ( /lib64/libc.so.6 /usr/lib64/libc_nonshared.a AS_NEEDED ( /lib64/ld-linux-x86-64.so.2 ) )
if [[ -n $(host_eprefix) ]] ; then
local file
grep -lZIF "ld script" "${ED}/$(alt_usrlibdir)"/lib*.{a,so} 2>/dev/null | while read -rd '' file ; do
sed -i "s|$(host_eprefix)/|/|g" "${file}" || die
done
fi
# We'll take care of the cache ourselves
rm -f "${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
# riscv
ilp32d /lib/ld-linux-riscv32-ilp32d.so.1
ilp32 /lib/ld-linux-riscv32-ilp32.so.1
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
# ELFv2 (glibc does not support ELFv1 on LE)
ppc64 /lib64/ld64.so.2
)
;;
big)
ldso_abi_list+=(
# arm
arm64 /lib/ld-linux-aarch64_be.so.1
# ELFv1 (glibc does not support ELFv2 on BE)
ppc64 /lib64/ld64.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
# In the LSB 5.0 definition, someone had the excellent idea to "standardize"
# the runtime loader name, see also https://xkcd.com/927/
# Normally, in Gentoo one should never come across executables that require this.
# However, binary commercial packages are known to adhere to weird practices.
# https://refspecs.linuxfoundation.org/LSB_5.0.0/LSB-Core-AMD64/LSB-Core-AMD64.html#BASELIB
local lsb_ldso_name native_ldso_name lsb_ldso_abi
local lsb_ldso_abi_list=(
# x86
amd64 ld-linux-x86-64.so.2 ld-lsb-x86-64.so.3
)
for (( i = 0; i < ${#lsb_ldso_abi_list[@]}; i += 3 )) ; do
lsb_ldso_abi=${lsb_ldso_abi_list[i]}
native_ldso_name=${lsb_ldso_abi_list[i+1]}
lsb_ldso_name=${lsb_ldso_abi_list[i+2]}
has ${lsb_ldso_abi} $(get_install_abis) || continue
if [[ ! -L ${ED}/$(get_abi_LIBDIR ${lsb_ldso_abi})/${lsb_ldso_name} && ! -e ${ED}/$(get_abi_LIBDIR ${lsb_ldso_abi})/${lsb_ldso_name} ]] ; then
dosym ${native_ldso_name} "$(alt_prefix)/$(get_abi_LIBDIR ${lsb_ldso_abi})/${lsb_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 > "${ED}"/usr/share/i18n/SUPPORTED \
|| die "generating /usr/share/i18n/SUPPORTED failed"
cd "${S}" || die
# Install misc network config files
insinto /etc
doins posix/gai.conf
if use systemd ; then
doins "${WORKDIR}/glibc-systemd-${GLIBC_SYSTEMD_VER}/gentoo-config/nsswitch.conf"
else
doins nss/nsswitch.conf
fi
# Gentoo-specific
newins "${FILESDIR}"/host.conf-1 host.conf
if use nscd ; then
doins nscd/nscd.conf
newinitd "$(prefixify_ro "${FILESDIR}"/nscd-1)" nscd
local nscd_args=(
-e "s:@PIDFILE@:$(strings "${ED}"/usr/sbin/nscd | grep nscd.pid):"
)
sed -i "${nscd_args[@]}" "${ED}"/etc/init.d/nscd
use systemd && systemd_dounit nscd/nscd.service
newtmpfiles nscd/nscd.tmpfiles nscd.conf
fi
echo 'LDPATH="include ld.so.conf.d/*.conf"' > "${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 --inplace-glibc "${ED}/"
fi
}
glibc_headers_install() {
local builddir=$(builddir "headers")
cd "${builddir}"
emake install_root="${D}/$(build_eprefix)$(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 $(alt_prefix)/sys-include
}
src_install() {
if just_headers ; then
export ABI=default
glibc_headers_install
return
fi
foreach_abi glibc_do_src_install
if ! use static-libs ; then
einfo "Not installing static glibc libraries"
find "${ED}" -name "*.a" -and -not -name "*_nonshared.a" -delete
fi
}
# 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
# first let's find the actual dynamic linker here
# symlinks may point to the wrong abi
local newldso=$(find . -maxdepth 1 -name 'ld*so.?' -type f -print -quit)
einfo Last-minute run tests with ${newldso} in /$(get_libdir) ...
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 \
${newldso} --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
einfo "Checking general environment sanity."
sanity_prechecks
# 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
[[ -n ${ROOT} ]] && return 0
[[ -d ${ED}/$(get_libdir) ]] || return 0
[[ -z ${BOOTSTRAP_RAP} ]] && glibc_sanity_check
if [[ -L ${EROOT}/usr/lib/locale ]]; then
# Help portage migrate this to a directory
# https://bugs.gentoo.org/753740
rm "${EROOT}"/usr/lib/locale || die
fi
# Keep around libcrypt so that Perl doesn't break when merging libxcrypt
# (libxcrypt is the new provider for now of libcrypt.so.{1,2}).
# bug #802207
if ! use crypt && has_version "${CATEGORY}/${PN}[crypt]" && ! has preserve-libs ${FEATURES}; then
PRESERVED_OLD_LIBCRYPT=1
cp -p "${EROOT}/$(get_libdir)/libcrypt$(get_libname 1)" "${T}/libcrypt$(get_libname 1)" || die
else
PRESERVED_OLD_LIBCRYPT=0
fi
}
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 && [[ -z ${ROOT} ]] ; then
use compile-locales || run_locale_gen "${EROOT}/"
fi
upgrade_warning
# Check for sanity of /etc/nsswitch.conf, take 2
if [[ -e ${EROOT}/etc/nsswitch.conf ]] && ! has_version sys-auth/libnss-nis ; then
local entry
for entry in passwd group shadow; do
if grep -E -q "^[ \t]*${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
if [[ ${PRESERVED_OLD_LIBCRYPT} -eq 1 ]] ; then
cp -p "${T}/libcrypt$(get_libname 1)" "${EROOT}/$(get_libdir)/libcrypt$(get_libname 1)" || die
preserve_old_lib_notify /$(get_libdir)/libcrypt$(get_libname 1)
elog "Please ignore a possible later error message about a file collision involving"
elog "${EROOT}/$(get_libdir)/libcrypt$(get_libname 1). We need to preserve this file for the moment to keep"
elog "the upgrade working, but it also needs to be overwritten when"
elog "sys-libs/libxcrypt is installed. See bug 802210 for more details."
fi
}
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