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glibc-9999.ebuild
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glibc-9999.ebuild
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# Copyright 1999-2021 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2
EAPI=7
# Bumping notes: https://wiki.gentoo.org/wiki/Project:Toolchain/sys-libs/glibc
# Please read & adapt the page as necessary if obsolete.
# We avoid Python 3.10 here _for now_ (it does work!) to avoid circular dependencies
# on upgrades as people migrate to libxcrypt.
# https://wiki.gentoo.org/wiki/User:Sam/Portage_help/Circular_dependencies#Python_and_libcrypt
PYTHON_COMPAT=( python3_{7,8,9} )
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=2
PATCH_DEV=dilfridge
if [[ ${PV} == 9999* ]]; then
inherit git-r3
else
#KEYWORDS="~alpha ~amd64 ~arm ~arm64 ~hppa ~ia64 ~m68k ~mips ~ppc ~ppc64 ~riscv ~s390 ~sparc ~x86"
KEYWORDS=""
SRC_URI="mirror://gnu/glibc/${P}.tar.xz"
SRC_URI+=" https://dev.gentoo.org/~${PATCH_DEV}/distfiles/${P}-patches-${PATCH_VER}.tar.xz"
fi
RELEASE_VER=${PV}
GCC_BOOTSTRAP_VER=20201208
LOCALE_GEN_VER=2.22
GLIBC_SYSTEMD_VER=20210729
SRC_URI+=" https://gitweb.gentoo.org/proj/locale-gen.git/snapshot/locale-gen-${LOCALE_GEN_VER}.tar.gz"
SRC_URI+=" multilib-bootstrap? ( https://dev.gentoo.org/~dilfridge/distfiles/gcc-multilib-bootstrap-${GCC_BOOTSTRAP_VER}.tar.xz )"
SRC_URI+=" systemd? ( https://gitweb.gentoo.org/proj/toolchain/glibc-systemd.git/snapshot/glibc-systemd-${GLIBC_SYSTEMD_VER}.tar.gz )"
IUSE="audit caps cet compile-locales +crypt custom-cflags doc gd headers-only +multiarch multilib multilib-bootstrap nscd profile selinux +ssp +static-libs static-pie suid systemd systemtap test vanilla"
# Minimum kernel version that glibc requires
MIN_KERN_VER="3.2.0"
# Minimum pax-utils version needed (which contains any new syscall changes for
# its seccomp filter!). Please double check this!
MIN_PAX_UTILS_VER="1.3.3"
# Here's how the cross-compile logic breaks down ...
# CTARGET - machine that will target the binaries
# CHOST - machine that will host the binaries
# CBUILD - machine that will build the binaries
# If CTARGET != CHOST, it means you want a libc for cross-compiling.
# If CHOST != CBUILD, it means you want to cross-compile the libc.
# CBUILD = CHOST = CTARGET - native build/install
# CBUILD != (CHOST = CTARGET) - cross-compile a native build
# (CBUILD = CHOST) != CTARGET - libc for cross-compiler
# CBUILD != CHOST != CTARGET - cross-compile a libc for a cross-compiler
# For install paths:
# CHOST = CTARGET - install into /
# CHOST != CTARGET - install into /usr/CTARGET/
#
export CBUILD=${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
BDEPEND="
${PYTHON_DEPS}
>=app-misc/pax-utils-${MIN_PAX_UTILS_VER}
sys-devel/bison
doc? ( sys-apps/texinfo )
!compile-locales? (
app-arch/gzip
sys-apps/grep
virtual/awk
)
"
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="${COMMON_DEPEND}
compile-locales? (
app-arch/gzip
sys-apps/grep
virtual/awk
)
test? ( >=net-dns/libidn2-2.3.0 )
"
RDEPEND="${COMMON_DEPEND}
app-arch/gzip
sys-apps/grep
virtual/awk
sys-apps/gentoo-functions
!<app-misc/pax-utils-${MIN_PAX_UTILS_VER}
!<net-misc/openssh-8.1_p1-r2
"
RESTRICT="!test? ( test )"
if [[ ${CATEGORY} == cross-* ]] ; then
BDEPEND+=" !headers-only? (
>=${CATEGORY}/binutils-2.27
>=${CATEGORY}/gcc-6
)"
[[ ${CATEGORY} == *-linux* ]] && DEPEND+=" ${CATEGORY}/linux-headers"
else
BDEPEND+="
>=sys-devel/binutils-2.27
>=sys-devel/gcc-6
"
DEPEND+=" virtual/os-headers "
RDEPEND+="
>=net-dns/libidn2-2.3.0
vanilla? ( !sys-libs/timezone-data )
"
PDEPEND+=" !vanilla? ( sys-libs/timezone-data )"
fi
# Ignore tests whitelisted below
GENTOO_GLIBC_XFAIL_TESTS="${GENTOO_GLIBC_XFAIL_TESTS:-yes}"
# The following tests fail due to the Gentoo build system and are thus
# executed but ignored:
XFAIL_TEST_LIST=(
# 9) Failures of unknown origin
tst-latepthread
# 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
# Flaky test, known to fail occasionally:
# https://sourceware.org/PR19329
# https://bugs.gentoo.org/719674#c12
tst-stack4
)
#
# Small helper functions
#
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' "$*" > glibc-test.c
# Most of the time CC is already set, but not in early sanity checks.
nonfatal emake glibc-test CC="${CC-$(tc-getCC ${CTARGET})}"
ret=$?
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
;;
amd64)
# -march needed for #185404 #199334
# TODO: See cross-compile issues listed above for x86.
[[ ${ABI} == x86 ]] &&
if ! do_compile_test "${CFLAGS_x86}" 'void f(int i, void *p) {if (__sync_fetch_and_add(&i, 1)) f(i, p);}\nint main(){return 0;}\n'; 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
;;
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=${ASFLAGS_BASE}
# Allow users to explicitly avoid flag sanitization via
# USE=custom-cflags.
if ! use custom-cflags; then
# Over-zealous CFLAGS can often cause problems. What may work for one
# person may not work for another. To avoid a large influx of bugs
# relating to failed builds, we strip most CFLAGS out to ensure as few
# problems as possible.
strip-flags
# Lock glibc at -O2; we want to be conservative here.
filter-flags '-O?'
append-flags -O2
fi
strip-unsupported-flags
filter-flags -m32 -m64 '-mabi=*'
# glibc aborts if rpath is set by LDFLAGS
filter-ldflags '-Wl,-rpath=*'
# ld can't use -r & --relax at the same time, bug #788901
# https://sourceware.org/PR27837
filter-ldflags '-Wl,--relax'
# #492892
filter-flags -frecord-gcc-switches
unset CBUILD_OPT CTARGET_OPT
if use multilib ; then
CTARGET_OPT=$(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
# 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
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 ${CTARGET})}
export __GLIBC_CC CC="${__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}"
}
# 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
# 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
# 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
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
}
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."
break
fi
done
fi
}
#
# the phases
#
# pkg_pretend
pkg_pretend() {
# All the checks...
einfo "Checking general environment sanity."
sanity_prechecks
upgrade_warning
}
pkg_setup() {
# see bug 682570
[[ -z ${BOOTSTRAP_RAP} ]] && python-any-r1_pkg_setup
}
# src_unpack
src_unpack() {
# Consistency is not guaranteed between pkg_ and src_ ...
sanity_prechecks
use multilib-bootstrap && unpack gcc-multilib-bootstrap-${GCC_BOOTSTRAP_VER}.tar.xz
setup_env
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-${RELEASE_VER}-patches-${PATCH_VER}.tar.xz
fi
cd "${WORKDIR}" || die
unpack locale-gen-${LOCALE_GEN_VER}.tar.gz
use systemd && unpack glibc-systemd-${GLIBC_SYSTEMD_VER}.tar.gz
}
src_prepare() {
local patchsetname
if ! use vanilla ; then
if [[ ${PV} == 9999* ]] ; then
patchsetname="from git master"
else
patchsetname="${RELEASE_VER}-${PATCH_VER}"
fi
einfo "Applying Gentoo Glibc Patchset ${patchsetname}"
eapply "${WORKDIR}"/patches
einfo "Done."
fi
default
gnuconfig_update
cd "${WORKDIR}"
find . -name configure -exec touch {} +
# move the external locale-gen to its old place
mkdir extra || die
mv locale-gen-${LOCALE_GEN_VER} extra/locale || die
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 NM READELF; 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}"
# 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})"
einfo " $(printf '%15s' 'Manual NM:') ${NM}"
einfo " $(printf '%15s' 'Manual READELF:') ${READELF}"
echo
local myconf=()
case ${CTARGET} in
m68k*)
# setjmp() is not compatible with stack protection:
# https://sourceware.org/PR24202
myconf+=( --enable-stack-protector=no )
;;
*)
# Use '=strong' instead of '=all' to protect only functions
# worth protecting from stack smashes.
# '=all' is also known to have a problem in IFUNC resolution
# tests: https://sourceware.org/PR25680, bug #712356.
myconf+=( --enable-stack-protector=$(usex ssp strong 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)
$(use_with gd)
--with-headers=$(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 static-pie)
$(use_enable systemtap)
$(use_enable nscd)
# locale data is arch-independent
# https://bugs.gentoo.org/753740
libc_cv_complocaledir='${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)"
# 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}"