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toolchain-glibc.eclass
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toolchain-glibc.eclass
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# Copyright 1999-2018 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# @ECLASS: toolchain-glibc.eclass
# @MAINTAINER:
# @SUPPORTED_EAPIS: 0 1 2 3 4 5 6
# @BLURB: Common code for sys-libs/glibc ebuilds
# @DESCRIPTION:
# This eclass contains the common phase functions migrated from
# sys-libs/glibc eblits.
if [[ -z ${_TOOLCHAIN_GLIBC_ECLASS} ]]; then
inherit eutils versionator toolchain-funcs flag-o-matic gnuconfig \
multilib systemd unpacker multiprocessing prefix
case ${EAPI:-0} in
0|1|2|3) EXPORT_FUNCTIONS pkg_setup src_unpack src_compile src_test \
src_install pkg_preinst pkg_postinst;;
2|3) EXPORT_FUNCTIONS pkg_setup src_unpack src_prepare src_configure \
src_compile src_test src_install pkg_preinst pkg_postinst;;
4|5) EXPORT_FUNCTIONS pkg_pretend pkg_setup src_unpack src_prepare \
src_configure src_compile src_test src_install \
pkg_preinst pkg_postinst;;
6) EXPORT_FUNCTIONS pkg_pretend;;
*) die "Unsupported EAPI=${EAPI}";;
esac
# == common ==
alt_prefix() {
is_crosscompile && echo /usr/${CTARGET}
}
if [[ ${EAPI:-0} == [012] ]] ; then
: ${ED:=${D}}
: ${EROOT:=${ROOT}}
fi
# This indirection is for binpkgs. #523332
_nonfatal() { nonfatal "$@" ; }
if [[ ${EAPI:-0} == [0123] ]] ; then
nonfatal() { "$@" ; }
_nonfatal() { "$@" ; }
fi
# 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.
# note: intentionally undocumented.
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"
}
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 $(tc-arch) in
x86)
# -march needed for #185404 #199334
# TODO: When creating the first glibc cross-compile, this test will
# always fail as it does a full link which in turn requires glibc.
# Probably also applies when changing multilib profile settings (e.g.
# enabling x86 when the profile was amd64-only previously).
# We could change main to _start and pass -nostdlib here so that we
# only test the gcc code compilation. Or we could do a compile and
# then look for the symbol via scanelf.
if ! glibc_compile_test "" 'void f(int i, void *p) {if (__sync_fetch_and_add(&i, 1)) f(i, p);}\nint main(){return 0;}\n' 2>/dev/null ; then
local t=${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 ! glibc_compile_test "${CFLAGS_x86}" 'void f(int i, void *p) {if (__sync_fetch_and_add(&i, 1)) f(i, p);}\nint main(){return 0;}\n' 2>/dev/null ; then
local t=${CTARGET_OPT:-${CTARGET}}
t=${t%%-*}
# Normally the target is x86_64-xxx, so turn that into the -march that
# gcc actually accepts. #528708
[[ ${t} == "x86_64" ]] && t="x86-64"
filter-flags '-march=*'
# ugly, ugly, ugly. ugly.
CFLAGS_x86=$(CFLAGS=${CFLAGS_x86} filter-flags '-march=*'; echo "${CFLAGS}")
export CFLAGS_x86="${CFLAGS_x86} -march=${t}"
einfo "Auto adding -march=${t} to CFLAGS_x86 #185404"
fi
;;
mips)
# The mips abi cannot support the GNU style hashes. #233233
filter-ldflags -Wl,--hash-style=gnu -Wl,--hash-style=both
;;
sparc)
# Both sparc and sparc64 can use -fcall-used-g6. -g7 is bad, though.
filter-flags "-fcall-used-g7"
append-flags "-fcall-used-g6"
# If the CHOST is the basic one (e.g. not sparcv9-xxx already),
# try to pick a better one so glibc can use cpu-specific .S files.
# We key off the CFLAGS to get a good value. Also need to handle
# version skew.
# We can't force users to set their CHOST to their exact machine
# as many of these are not recognized by config.sub/gcc and such :(.
# Note: If the mcpu values don't scale, we might try probing CPP defines.
# Note: Should we factor in -Wa,-AvXXX flags too ? Or -mvis/etc... ?
local cpu
case ${CTARGET} in
sparc64-*)
case $(get-flag mcpu) in
niagara[234])
if version_is_at_least 2.8 ; then
cpu="sparc64v2"
elif version_is_at_least 2.4 ; then
cpu="sparc64v"
elif version_is_at_least 2.2.3 ; then
cpu="sparc64b"
fi
;;
niagara)
if version_is_at_least 2.4 ; then
cpu="sparc64v"
elif version_is_at_least 2.2.3 ; then
cpu="sparc64b"
fi
;;
ultrasparc3)
cpu="sparc64b"
;;
*)
# We need to force at least v9a because the base build doesn't
# work with just v9.
# https://sourceware.org/bugzilla/show_bug.cgi?id=19477
[[ -z ${cpu} ]] && append-flags "-Wa,-xarch=v9a"
;;
esac
;;
sparc-*)
case $(get-flag mcpu) in
niagara[234])
if version_is_at_least 2.8 ; then
cpu="sparcv9v2"
elif version_is_at_least 2.4 ; then
cpu="sparcv9v"
elif version_is_at_least 2.2.3 ; then
cpu="sparcv9b"
else
cpu="sparcv9"
fi
;;
niagara)
if version_is_at_least 2.4 ; then
cpu="sparcv9v"
elif version_is_at_least 2.2.3 ; then
cpu="sparcv9b"
else
cpu="sparcv9"
fi
;;
ultrasparc3)
cpu="sparcv9b"
;;
v9|ultrasparc)
cpu="sparcv9"
;;
v8|supersparc|hypersparc|leon|leon3)
cpu="sparcv8"
;;
esac
;;
esac
[[ -n ${cpu} ]] && CTARGET_OPT="${cpu}-${CTARGET#*-}"
;;
esac
}
setup_flags() {
# Make sure host make.conf doesn't pollute us
if is_crosscompile || tc-is-cross-compiler ; then
CHOST=${CTARGET} strip-unsupported-flags
fi
# Store our CFLAGS because it's changed depending on which CTARGET
# we are building when pulling glibc on a multilib profile
CFLAGS_BASE=${CFLAGS_BASE-${CFLAGS}}
CFLAGS=${CFLAGS_BASE}
CXXFLAGS_BASE=${CXXFLAGS_BASE-${CXXFLAGS}}
CXXFLAGS=${CXXFLAGS_BASE}
ASFLAGS_BASE=${ASFLAGS_BASE-${ASFLAGS}}
ASFLAGS=${ASFLAGS_BASE}
# Over-zealous CFLAGS can often cause problems. What may work for one
# person may not work for another. To avoid a large influx of bugs
# relating to failed builds, we strip most CFLAGS out to ensure as few
# problems as possible.
strip-flags
strip-unsupported-flags
filter-flags -m32 -m64 -mabi=*
filter-ldflags -Wl,-rpath=*
# Bug 492892.
filter-flags -frecord-gcc-switches
unset CBUILD_OPT CTARGET_OPT
if use multilib ; then
CTARGET_OPT=$(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 -- linuxthreads needs it and we want to be
# conservative here. -fno-strict-aliasing is to work around #155906
filter-flags -O?
append-flags -O2 -fno-strict-aliasing
# Can't build glibc itself with fortify code. Newer versions add
# this flag for us, so no need to do it manually.
version_is_at_least 2.16 ${PV} || append-cppflags -U_FORTIFY_SOURCE
# building glibc <2.25 with SSP is fraught with difficulty, especially
# due to __stack_chk_fail_local which would mean significant changes
# to the glibc build process. See bug #94325 #293721
# Note we have to handle both user-given CFLAGS and gcc defaults via
# spec rules here. We can't simply add -fno-stack-protector as it gets
# added before user flags, and we can't just filter-flags because
# _filter_hardened doesn't support globs.
filter-flags -fstack-protector*
if ! version_is_at_least 2.25 ; then
tc-enables-ssp && append-flags $(test-flags -fno-stack-protector)
fi
if [[ $(gcc-major-version) -lt 6 ]]; then
# Starting with gcc-6 (and fully upstreamed pie patches) we control
# default enabled/disabled pie via use flags. So nothing to do
# here. #618160
if use hardened && tc-enables-pie ; then
# Force PIC macro definition for all compilations since they're all
# either -fPIC or -fPIE with the default-PIE compiler.
append-cppflags -DPIC
else
# Don't build -fPIE without the default-PIE compiler and the
# hardened-pie patch
filter-flags -fPIE
fi
fi
}
want_nptl() {
[[ -z ${LT_VER} ]] && return 0
want_tls || return 1
use nptl || return 1
# Older versions of glibc had incomplete arch support for nptl.
# But if you're building those now, you can handle USE=nptl yourself.
return 0
}
want_linuxthreads() {
[[ -z ${LT_VER} ]] && return 1
use linuxthreads
}
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 ${WANT__THREAD}
}
use_multiarch() {
# Make sure binutils is new enough to support indirect functions #336792
# This funky sed supports gold and bfd linkers.
local bver nver
bver=$($(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 was added in 2.23, but glibc also needs machinemode which is in 2.24.
s390) nver="2.24" ;;
sparc) nver="2.21" ;;
*) return 1 ;;
esac
version_is_at_least ${nver} ${bver}
}
# Setup toolchain variables that had historically
# been defined in the profiles for these archs.
setup_env() {
# silly users
unset LD_RUN_PATH
unset LD_ASSUME_KERNEL
if is_crosscompile || tc-is-cross-compiler ; then
multilib_env ${CTARGET_OPT:-${CTARGET}}
if ! use multilib ; then
MULTILIB_ABIS=${DEFAULT_ABI}
else
MULTILIB_ABIS=${MULTILIB_ABIS:-${DEFAULT_ABI}}
fi
# If the user has CFLAGS_<CTARGET> in their make.conf, use that,
# and fall back on CFLAGS.
local VAR=CFLAGS_${CTARGET//[-.]/_}
CFLAGS=${!VAR-${CFLAGS}}
einfo " $(printf '%15s' 'Manual CFLAGS:') ${CFLAGS}"
fi
setup_flags
export ABI=${ABI:-${DEFAULT_ABI:-default}}
if just_headers ; then
# Avoid mixing host's CC and target's CFLAGS_${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}
}
just_headers() {
is_crosscompile && use headers-only
}
glibc_banner() {
local b="Gentoo ${PVR}"
[[ -n ${SNAP_VER} ]] && b+=" snapshot ${SNAP_VER}"
[[ -n ${BRANCH_UPDATE} ]] && b+=" branch ${BRANCH_UPDATE}"
[[ -n ${PATCH_VER} ]] && ! use vanilla && b+=" p${PATCH_VER}"
echo "${b}"
}
# == phases ==
glibc_compile_test() {
local ret save_cflags=${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}
}
glibc_run_test() {
local ret
if [[ ${EMERGE_FROM} == "binary" ]] ; then
# ignore build failures when installing a binary package #324685
glibc_compile_test "" "$@" 2>/dev/null || return 0
else
if ! glibc_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}
}
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
# Older versions always installed setuid, so no need to check.
in_iuse suid || 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."
# Do not die on older kernels as devpts did not export these settings #489520.
if version_is_at_least 2.6.25 $(uname -r) ; then
die "mount & fix your /dev/pts settings"
fi
fi
}
toolchain-glibc_pkg_pretend() {
if [[ ${EAPI:-0} == 6 ]]; then
eerror "We're moving code back to the ebuilds to get away from the ancient EAPI cruft."
eerror "From EAPI=6 on you'll have to define the phases in the glibc ebuilds."
die "Silly overlay authors..."
fi
# For older EAPIs, this is run in pkg_preinst.
if [[ ${EAPI:-0} != [0123] ]] ; then
check_devpts
fi
# 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 ! glibc_run_test '#include <pwd.h>\nint main(){return getpwuid(0)==0;}\n'
then
eerror "Your patched vendor kernel is broken. You need to get an"
eerror "update from whoever is providing the kernel to you."
eerror "https://sourceware.org/bugzilla/show_bug.cgi?id=5227"
eerror "http://bugs.gentoo.org/262698"
die "keeping your system alive, say thank you"
fi
if ! glibc_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"
eerror "a newer version as syscall(<bignum>) will break."
eerror "http://bugs.gentoo.org/279260"
die "keeping your system alive, say thank you"
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 http://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
# Make sure host system is up to date #394453
if has_version '<sys-libs/glibc-2.13' && \
[[ -n $(scanelf -qys__guard -F'#s%F' "${EROOT}"/lib*/l*-*.so) ]]
then
ebegin "Scanning system for __guard to see if you need to rebuild first ..."
local files=$(
scanelf -qys__guard -F'#s%F' \
"${EROOT}"/*bin/ \
"${EROOT}"/lib* \
"${EROOT}"/usr/*bin/ \
"${EROOT}"/usr/lib* | \
egrep -v \
-e "^${EROOT}/lib.*/(libc|ld)-2.*.so$" \
-e "^${EROOT}/sbin/(ldconfig|sln)$"
)
[[ -z ${files} ]]
if ! eend $? ; then
eerror "Your system still has old SSP __guard symbols. You need to"
eerror "rebuild all the packages that provide these files first:"
eerror "${files}"
die "old __guard detected"
fi
fi
}
toolchain-glibc_pkg_setup() {
[[ ${EAPI:-0} == [0123] ]] && toolchain-glibc_pkg_pretend
}
# 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.
tc_glibc_get_KV() {
uname -r
return $?
}
tc_glibc_KV_major() {
[[ -z $1 ]] && return 1
local KV=$@
echo "${KV%%.*}"
}
tc_glibc_KV_minor() {
[[ -z $1 ]] && return 1
local KV=$@
KV=${KV#*.}
echo "${KV%%.*}"
}
tc_glibc_KV_micro() {
[[ -z $1 ]] && return 1
local KV=$@
KV=${KV#*.*.}
echo "${KV%%[^[:digit:]]*}"
}
tc_glibc_KV_to_int() {
[[ -z $1 ]] && return 1
local KV_MAJOR=$(tc_glibc_KV_major "$1")
local KV_MINOR=$(tc_glibc_KV_minor "$1")
local KV_MICRO=$(tc_glibc_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
}
tc_glibc_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() {
[[ $(tc_glibc_KV_to_int $1) -ge $(tc_glibc_KV_to_int $2) ]]
eend $?
}
get_kheader_version() {
printf '#include <linux/version.h>\nLINUX_VERSION_CODE\n' | \
$(tc-getCPP ${CTARGET}) -I "$(alt_build_headers)" - | \
tail -n 1
}
check_nptl_support() {
# don't care about the compiler here as we aren't using it
just_headers && return
local run_kv build_kv want_kv
run_kv=$(tc_glibc_get_KV)
build_kv=$(tc_glibc_int_to_KV $(get_kheader_version))
want_kv=${NPTL_KERN_VER}
ebegin "Checking gcc for __thread support"
if ! eend $(want__thread ; echo $?) ; then
echo
eerror "Could not find a gcc that supports the __thread directive!"
eerror "Please update your binutils/gcc and try again."
die "No __thread support in gcc!"
fi
if ! is_crosscompile && ! tc-is-cross-compiler ; then
# Building fails on an non-supporting kernel
ebegin "Checking kernel version (${run_kv} >= ${want_kv})"
if ! eend_KV ${run_kv} ${want_kv} ; then
echo
eerror "You need a kernel of at least ${want_kv} for NPTL support!"
die "Kernel version too low!"
fi
fi
ebegin "Checking linux-headers version (${build_kv} >= ${want_kv})"
if ! eend_KV ${build_kv} ${want_kv} ; then
echo
eerror "You need linux-headers of at least ${want_kv} for NPTL support!"
die "linux-headers version too low!"
fi
}
unpack_pkg() {
local a=${PN}
[[ -n ${SNAP_VER} ]] && a="${a}-${RELEASE_VER}"
[[ -n $1 ]] && a="${a}-$1"
if [[ -n ${SNAP_VER} ]] ; then
a="${a}-${SNAP_VER}"
else
if [[ -n $2 ]] ; then
a="${a}-$2"
else
a="${a}-${RELEASE_VER}"
fi
fi
if has ${a}.tar.xz ${A} ; then
unpacker ${a}.tar.xz
else
unpack ${a}.tar.bz2
fi
[[ -n $1 ]] && { mv ${a} $1 || die ; }
}
toolchain-glibc_do_src_unpack() {
# Check NPTL support _before_ we unpack things to save some time
want_nptl && check_nptl_support
unpack_pkg
cd "${S}"
touch locale/C-translit.h #185476 #218003
[[ -n ${LT_VER} ]] && unpack_pkg linuxthreads ${LT_VER}
[[ -n ${PORTS_VER} ]] && unpack_pkg ports ${PORTS_VER}
[[ -n ${LIBIDN_VER} ]] && unpack_pkg libidn
if [[ -n ${PATCH_VER} ]] ; then
cd "${WORKDIR}"
unpack glibc-${RELEASE_VER}-patches-${PATCH_VER}.tar.bz2
# pull out all the addons
local d
for d in extra/*/configure ; do
d=${d%/configure}
[[ -d ${S}/${d} ]] && die "${d} already exists in \${S}"
mv "${d}" "${S}" || die "moving ${d} failed"
done
fi
}
toolchain-glibc_src_unpack() {
setup_env
toolchain-glibc_do_src_unpack
[[ ${EAPI:-0} == [01] ]] && cd "${S}" && toolchain-glibc_src_prepare
}
toolchain-glibc_src_prepare() {
# XXX: We should do the branchupdate, before extracting the manpages and
# infopages else it does not help much (mtimes change if there is a change
# to them with branchupdate)
if [[ -n ${BRANCH_UPDATE} ]] ; then
epatch "${DISTDIR}"/glibc-${RELEASE_VER}-branch-update-${BRANCH_UPDATE}.patch.bz2
# Snapshot date patch
einfo "Patching version to display snapshot date ..."
sed -i -e "s:\(#define RELEASE\).*:\1 \"${BRANCH_UPDATE}\":" version.h
fi
# tag, glibc is it
if ! version_is_at_least 2.17 ; then
[[ -e csu/Banner ]] && die "need new banner location"
glibc_banner > csu/Banner
fi
if [[ -n ${PATCH_VER} ]] && ! use vanilla ; then
EPATCH_MULTI_MSG="Applying Gentoo Glibc Patchset ${RELEASE_VER}-${PATCH_VER} ..." \
EPATCH_EXCLUDE=${GLIBC_PATCH_EXCLUDE} \
EPATCH_SUFFIX="patch" \
ARCH=$(tc-arch) \
epatch "${WORKDIR}"/patches
fi
if just_headers ; then
if [[ -e ports/sysdeps/mips/preconfigure ]] ; then
# mips peeps like to screw with us. if building headers,
# we don't have a real compiler, so we can't let them
# insert -mabi on us.
sed -i '/CPPFLAGS=.*-mabi/s|.*|:|' ports/sysdeps/mips/preconfigure || die
find ports/sysdeps/mips/ -name Makefile -exec sed -i '/^CC.*-mabi=/s:-mabi=.*:-D_MIPS_SZPTR=32:' {} +
fi
fi
epatch_user
gnuconfig_update
# Glibc is stupid sometimes, and doesn't realize that with a
# static C-Only gcc, -lgcc_eh doesn't exist.
# https://sourceware.org/ml/libc-alpha/2003-09/msg00100.html
# https://sourceware.org/ml/libc-alpha/2005-02/msg00042.html
# But! Finally fixed in recent versions:
# https://sourceware.org/ml/libc-alpha/2012-05/msg01865.html
if ! version_is_at_least 2.16 ; then
echo 'int main(){}' > "${T}"/gcc_eh_test.c
if ! $(tc-getCC ${CTARGET}) ${CFLAGS} ${LDFLAGS} "${T}"/gcc_eh_test.c -lgcc_eh 2>/dev/null ; then
sed -i -e 's:-lgcc_eh::' Makeconfig || die "sed gcc_eh"
fi
fi
cd "${WORKDIR}"
find . -type f '(' -size 0 -o -name "*.orig" ')' -delete
find . -name configure -exec touch {} +
eprefixify extra/locale/locale-gen
# Fix permissions on some of the scripts.
chmod u+x "${S}"/scripts/*.sh
}
dump_toolchain_settings() {
echo
einfo "$*"
local v
for v in ABI CBUILD CHOST CTARGET CBUILD_OPT CTARGET_OPT CC LD {AS,C,CPP,CXX,LD}FLAGS ; do
einfo " $(printf '%15s' ${v}:) ${!v}"
done
# The glibc configure script doesn't properly use LDFLAGS all the time.
export CC="$(tc-getCC ${CTARGET}) ${LDFLAGS}"
einfo " $(printf '%15s' 'Manual CC:') ${CC}"
echo
}
glibc_do_configure() {
# Glibc does not work with gold (for various reasons) #269274.
tc-ld-disable-gold
dump_toolchain_settings "Configuring glibc for $1"
local myconf=()
# set addons
pushd "${S}" > /dev/null
local addons=$(echo */configure | sed \
-e 's:/configure::g' \
-e 's:\(linuxthreads\|nptl\|rtkaio\|glibc-compat\)\( \|$\)::g' \
-e 's: \+$::' \
-e 's! !,!g' \
-e 's!^!,!' \
-e '/^,\*$/d')
[[ -d ports ]] && addons+=",ports"
popd > /dev/null
if has_version '<sys-libs/glibc-2.13' ; then
myconf+=( --enable-old-ssp-compat )
fi
if version_is_at_least 2.25 ; then
case ${CTARGET} in
m68k*)
# setjmp() is not compatible with stack protection:
# https://sourceware.org/PR24202
myconf+=( --enable-stack-protector=no )
;;
mips*)
# dlopen() detects stack smash on mips n32 ABI.
# Cause is unknown: https://bugs.gentoo.org/640130
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=all )
;;
esac
fi
# 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
if version_is_at_least 2.25 ; then
myconf+=( --enable-stackguard-randomization )
else
myconf+=( $(use_enable hardened stackguard-randomization) )
fi
[[ $(tc-is-softfloat) == "yes" ]] && myconf+=( --without-fp )
if [[ $1 == "linuxthreads" ]] ; then
if want_tls ; then
myconf+=( --with-tls )
if ! want__thread || use glibc-compat20 || [[ ${LT_KER_VER} == 2.[02].* ]] ; then
myconf+=( --without-__thread )
else
myconf+=( --with-__thread )
fi
else
myconf+=( --without-tls --without-__thread )
fi
myconf+=( --disable-sanity-checks )
addons="linuxthreads${addons}"
myconf+=( --enable-kernel=${LT_KER_VER} )
elif [[ $1 == "nptl" ]] ; then
# Newer versions require nptl, so there is no addon for it.
version_is_at_least 2.20 || addons="nptl${addons}"
myconf+=( --enable-kernel=${NPTL_KERN_VER} )
else
die "invalid pthread option"
fi
myconf+=( --enable-add-ons="${addons#,}" )
# 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=http://bugs.gentoo.org/
--with-pkgversion="$(glibc_banner)"
$(use_multiarch || echo --disable-multi-arch)
$(in_iuse rpc && use_enable rpc obsolete-rpc || echo --enable-obsolete-rpc)
$(in_iuse systemtap && use_enable systemtap)
$(in_iuse nscd && use_enable nscd)
${EXTRA_ECONF}
)
# We rely on sys-libs/timezone-data for timezone tools normally.
if version_is_at_least 2.23 ; then
myconf+=( $(use_enable vanilla timezone-tools) )
fi
# These libs don't have configure flags.
ac_cv_lib_audit_audit_log_user_avc_message=$(in_iuse audit && usex audit || echo no)
ac_cv_lib_cap_cap_init=$(in_iuse caps && usex caps || echo no)
# There is no configure option for this and we need to export it
# since the glibc build will re-run configure on itself
export libc_cv_rootsbindir="${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
# Overtime, generating info pages can be painful. So disable this for
# versions older than the latest stable to avoid the issue (this ver
# should be updated from time to time). #464394 #465816
if ! version_is_at_least 2.17 ; then
export ac_cv_prog_MAKEINFO=:
fi
local builddir=$(builddir "$1")
mkdir -p "${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.