# Copyright 1999-2021 Gentoo Authors # Distributed under the terms of the GNU General Public License v2 EAPI=6 TMPFILES_OPTIONAL=1 inherit prefix 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" if [[ ${PV} == 9999* ]]; then EGIT_REPO_URI="https://sourceware.org/git/glibc.git" inherit git-r3 else KEYWORDS="~amd64" SRC_URI="mirror://gnu/glibc/${P}.tar.xz" fi RELEASE_VER=${PV} GCC_BOOTSTRAP_VER="4.7.3-r1" # Gentoo patchset PATCH_VER=9 SRC_URI+=" https://dev.gentoo.org/~dilfridge/distfiles/${P}-patches-${PATCH_VER}.tar.bz2" SRC_URI+=" multilib? ( https://dev.gentoo.org/~dilfridge/distfiles/gcc-${GCC_BOOTSTRAP_VER}-multilib-bootstrap.tar.bz2 )" IUSE="audit caps compile-locales debug doc gd headers-only multilib nscd profile selinux suid systemtap vanilla" # Minimum kernel version that glibc requires # hppa requires 2.6.20 MIN_KERN_VER="2.6.16" # 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 disable stripping # entirely. RESTRICT=strip # We need a new-enough binutils/gcc to match upstream baseline. # Also we need to make sure our binutils/gcc supports TLS. COMMON_DEPEND=" nscd? ( selinux? ( audit? ( sys-process/audit ) caps? ( sys-libs/libcap ) ) ) suid? ( caps? ( sys-libs/libcap ) ) selinux? ( sys-libs/libselinux ) systemtap? ( dev-util/systemtap ) " DEPEND="${COMMON_DEPEND} >=app-misc/pax-utils-0.1.10 doc? ( sys-apps/texinfo ) " RDEPEND="${COMMON_DEPEND} sys-apps/gentoo-functions " if [[ ${CATEGORY} == cross-* ]] ; then DEPEND+=" !headers-only? ( >=${CATEGORY}/binutils-2.24 >=${CATEGORY}/gcc-4.9 )" [[ ${CATEGORY} == *-linux* ]] && DEPEND+=" ${CATEGORY}/linux-headers" else DEPEND+=" >=sys-devel/binutils-2.24 >=sys-devel/gcc-4.9 virtual/os-headers " RDEPEND+=" vanilla? ( !sys-libs/timezone-data )" PDEPEND+=" !vanilla? ( sys-libs/timezone-data )" fi # # Small helper functions # is_crosscompile() { [[ ${CHOST} != ${CTARGET} ]] } just_headers() { is_crosscompile && use headers-only } alt_prefix() { is_crosscompile && echo /usr/${CTARGET} } # We need to be able to set alternative headers for compiling for non-native # platform. Will also become useful for testing kernel-headers without screwing # up the whole system. alt_headers() { echo ${ALT_HEADERS:=$(alt_prefix)/usr/include} } alt_build_headers() { if [[ -z ${ALT_BUILD_HEADERS} ]] ; then ALT_BUILD_HEADERS="${EPREFIX}$(alt_headers)" if tc-is-cross-compiler ; then ALT_BUILD_HEADERS=${SYSROOT}$(alt_headers) if [[ ! -e ${ALT_BUILD_HEADERS}/linux/version.h ]] ; then local header_path=$(echo '#include <linux/version.h>' | $(tc-getCPP ${CTARGET}) ${CFLAGS} 2>&1 | grep -o '[^"]*linux/version.h') ALT_BUILD_HEADERS=${header_path%/linux/version.h} fi fi fi echo "${ALT_BUILD_HEADERS}" } alt_libdir() { echo $(alt_prefix)/$(get_libdir) } alt_usrlibdir() { echo $(alt_prefix)/usr/$(get_libdir) } builddir() { echo "${WORKDIR}/build-${ABI}-${CTARGET}-$1" } do_compile_test() { local ret save_cflags=${CFLAGS} CFLAGS+=" $1" shift pushd "${T}" >/dev/null rm -f glibc-test* printf '%b' "$*" > glibc-test.c nonfatal emake -s glibc-test ret=$? popd >/dev/null CFLAGS=${save_cflags} return ${ret} } do_run_test() { local ret if [[ ${MERGE_TYPE} == "binary" ]] ; then # ignore build failures when installing a binary package #324685 do_compile_test "" "$@" 2>/dev/null || return 0 else if ! do_compile_test "" "$@" ; then ewarn "Simple build failed ... assuming this is desired #324685" return 0 fi fi pushd "${T}" >/dev/null ./glibc-test ret=$? rm -f glibc-test* popd >/dev/null return ${ret} } setup_target_flags() { # This largely mucks with compiler flags. None of which should matter # when building up just the headers. just_headers && return 0 case $(tc-arch) in x86) # -march needed for #185404 #199334 # TODO: When creating the first glibc cross-compile, this test will # always fail as it does a full link which in turn requires glibc. # Probably also applies when changing multilib profile settings (e.g. # enabling x86 when the profile was amd64-only previously). # We could change main to _start and pass -nostdlib here so that we # only test the gcc code compilation. Or we could do a compile and # then look for the symbol via scanelf. if ! do_compile_test "" 'void f(int i, void *p) {if (__sync_fetch_and_add(&i, 1)) f(i, p);}\nint main(){return 0;}\n' 2>/dev/null ; then local t=${CTARGET_OPT:-${CTARGET}} t=${t%%-*} filter-flags '-march=*' export CFLAGS="-march=${t} ${CFLAGS}" einfo "Auto adding -march=${t} to CFLAGS #185404" fi ;; amd64) # -march needed for #185404 #199334 # Note: This test only matters when the x86 ABI is enabled, so we could # optimize a bit and elide it. # TODO: See cross-compile issues listed above for x86. if ! do_compile_test "${CFLAGS_x86}" 'void f(int i, void *p) {if (__sync_fetch_and_add(&i, 1)) f(i, p);}\nint main(){return 0;}\n' 2>/dev/null ; then local t=${CTARGET_OPT:-${CTARGET}} t=${t%%-*} # Normally the target is x86_64-xxx, so turn that into the -march that # gcc actually accepts. #528708 [[ ${t} == "x86_64" ]] && t="x86-64" filter-flags '-march=*' # ugly, ugly, ugly. ugly. CFLAGS_x86=$(CFLAGS=${CFLAGS_x86} filter-flags '-march=*'; echo "${CFLAGS}") export CFLAGS_x86="${CFLAGS_x86} -march=${t}" einfo "Auto adding -march=${t} to CFLAGS_x86 #185404" fi ;; mips) # The mips abi cannot support the GNU style hashes. #233233 filter-ldflags -Wl,--hash-style=gnu -Wl,--hash-style=both ;; sparc) # Both sparc and sparc64 can use -fcall-used-g6. -g7 is bad, though. filter-flags "-fcall-used-g7" append-flags "-fcall-used-g6" # If the CHOST is the basic one (e.g. not sparcv9-xxx already), # try to pick a better one so glibc can use cpu-specific .S files. # We key off the CFLAGS to get a good value. Also need to handle # version skew. # We can't force users to set their CHOST to their exact machine # as many of these are not recognized by config.sub/gcc and such :(. # Note: If the mcpu values don't scale, we might try probing CPP defines. # Note: Should we factor in -Wa,-AvXXX flags too ? Or -mvis/etc... ? local cpu case ${CTARGET} in sparc64-*) case $(get-flag mcpu) in niagara[234]) cpu="sparc64v2" ;; niagara) cpu="sparc64v" ;; 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]) cpu="sparcv9v2" ;; niagara) cpu="sparcv9v" ;; ultrasparc3) cpu="sparcv9b" ;; v9|ultrasparc) cpu="sparcv9" ;; v8|supersparc|hypersparc|leon|leon3) cpu="sparcv8" ;; esac ;; esac [[ -n ${cpu} ]] && CTARGET_OPT="${cpu}-${CTARGET#*-}" ;; esac } setup_flags() { # Make sure host make.conf doesn't pollute us if is_crosscompile || tc-is-cross-compiler ; then CHOST=${CTARGET} strip-unsupported-flags fi # Store our CFLAGS because it's changed depending on which CTARGET # we are building when pulling glibc on a multilib profile CFLAGS_BASE=${CFLAGS_BASE-${CFLAGS}} CFLAGS=${CFLAGS_BASE} CXXFLAGS_BASE=${CXXFLAGS_BASE-${CXXFLAGS}} CXXFLAGS=${CXXFLAGS_BASE} ASFLAGS_BASE=${ASFLAGS_BASE-${ASFLAGS}} ASFLAGS=${ASFLAGS_BASE} # Over-zealous CFLAGS can often cause problems. What may work for one # person may not work for another. To avoid a large influx of bugs # relating to failed builds, we strip most CFLAGS out to ensure as few # problems as possible. strip-flags strip-unsupported-flags filter-flags -m32 -m64 '-mabi=*' # glibc aborts if rpath is set by LDFLAGS filter-ldflags '-Wl,-rpath=*' # #492892 filter-flags -frecord-gcc-switches unset CBUILD_OPT CTARGET_OPT if use multilib ; then CTARGET_OPT=$(get_abi_CTARGET) [[ -z ${CTARGET_OPT} ]] && CTARGET_OPT=$(get_abi_CHOST) fi setup_target_flags if [[ -n ${CTARGET_OPT} && ${CBUILD} == ${CHOST} ]] && ! is_crosscompile; then CBUILD_OPT=${CTARGET_OPT} fi # Lock glibc at -O2; we want to be conservative here. # -fno-strict-aliasing is to work around #155906. filter-flags '-O?' append-flags -O2 -fno-strict-aliasing filter-flags '-fstack-protector*' append-flags '-fno-stack-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} } # 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}} fi setup_flags export ABI=${ABI:-${DEFAULT_ABI:-default}} 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} ${!VAR}" } foreach_abi() { setup_env local ret=0 local abilist="" if use multilib ; then abilist=$(get_install_abis) else abilist=${DEFAULT_ABI} fi local -x ABI for ABI in ${abilist:-default} ; do setup_env einfo "Running $1 for ABI ${ABI}" $1 : $(( ret |= $? )) done return ${ret} } glibc_banner() { local b="Gentoo ${PVR}" [[ -n ${PATCH_VER} ]] && ! use vanilla && b+=" p${PATCH_VER}" echo "${b}" } check_devpts() { # Make sure devpts is mounted correctly for use w/out setuid pt_chown. # If merely building the binary package, then there's nothing to verify. [[ ${MERGE_TYPE} == "buildonly" ]] && return # Only sanity check when installing the native glibc. [[ ${ROOT} != "/" ]] && return # If they're opting in to the old suid code, then no need to check. use suid && return if awk '$3 == "devpts" && $4 ~ /[, ]gid=5[, ]/ { exit 1 }' /proc/mounts ; then eerror "In order to use glibc with USE=-suid, you must make sure that" eerror "you have devpts mounted at /dev/pts with the gid=5 option." eerror "Openrc should do this for you, so you should check /etc/fstab" eerror "and make sure you do not have any invalid settings there." die "mount & fix your /dev/pts settings" fi } # The following Kernel version handling functions are mostly copied from portage # source. It's better not to use linux-info.eclass here since a) it adds too # much magic, see bug 326693 for some of the arguments, and b) some of the # functions are just not provided. g_get_running_KV() { uname -r return $? } g_KV_major() { [[ -z $1 ]] && return 1 local KV=$@ echo "${KV%%.*}" } g_KV_minor() { [[ -z $1 ]] && return 1 local KV=$@ KV=${KV#*.} echo "${KV%%.*}" } g_KV_micro() { [[ -z $1 ]] && return 1 local KV=$@ KV=${KV#*.*.} echo "${KV%%[^[:digit:]]*}" } g_KV_to_int() { [[ -z $1 ]] && return 1 local KV_MAJOR=$(g_KV_major "$1") local KV_MINOR=$(g_KV_minor "$1") local KV_MICRO=$(g_KV_micro "$1") local KV_int=$(( KV_MAJOR * 65536 + KV_MINOR * 256 + KV_MICRO )) # We make version 2.2.0 the minimum version we will handle as # a sanity check ... if its less, we fail ... if [[ ${KV_int} -ge 131584 ]] ; then echo "${KV_int}" return 0 fi return 1 } g_int_to_KV() { local version=$1 major minor micro major=$((version / 65536)) minor=$(((version % 65536) / 256)) micro=$((version % 256)) echo ${major}.${minor}.${micro} } eend_KV() { [[ $(g_KV_to_int $1) -ge $(g_KV_to_int $2) ]] eend $? } get_kheader_version() { printf '#include <linux/version.h>\nLINUX_VERSION_CODE\n' | \ $(tc-getCPP ${CTARGET}) -I "${EPREFIX}/$(alt_build_headers)" - | \ tail -n 1 } # We collect all sanity checks here. Consistency is not guranteed between # pkg_ and src_ phases, so we call this function both in pkg_pretend and in # src_unpack. sanity_prechecks() { # Make sure devpts is mounted correctly for use w/out setuid pt_chown check_devpts # Prevent native builds from downgrading if [[ ${MERGE_TYPE} != "buildonly" ]] && \ [[ ${ROOT} == "/" ]] && \ [[ ${CBUILD} == ${CHOST} ]] && \ [[ ${CHOST} == ${CTARGET} ]] ; then # The high rev # is to allow people to downgrade between -r# # versions. We want to block 2.20->2.19, but 2.20-r3->2.20-r2 # should be fine. Hopefully we never actually use a r# this # high. if has_version ">${CATEGORY}/${P}-r10000" ; then eerror "Sanity check to keep you from breaking your system:" eerror " Downgrading glibc is not supported and a sure way to destruction." [[ ${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 # Check for sanity of /etc/nsswitch.conf if [[ -e ${EROOT}/etc/nsswitch.conf ]] ; then local entry for entry in passwd group shadow; do if ! egrep -q "^[ \t]*${entry}:.*files" "${EROOT}"/etc/nsswitch.conf; then eerror "Your ${EROOT}/etc/nsswitch.conf is out of date." eerror "Please make sure you have 'files' entries for" eerror "'passwd:', 'group:' and 'shadow:' databases." eerror "For more details see:" eerror " https://wiki.gentoo.org/wiki/Project:Toolchain/nsswitch.conf_in_glibc-2.26" die "nsswitch.conf has no 'files' provider in '${entry}'." fi done fi # ABI-specific checks follow here. Hey, we have a lot more specific conditions that # we test for... if ! is_crosscompile ; then if use amd64 && use multilib && [[ ${MERGE_TYPE} != "binary" ]] ; then ebegin "Checking that IA32 emulation is enabled in the running kernel" echo 'int main(){return 0;}' > "${T}/check-ia32-emulation.c" local STAT if "${CC-${CHOST}-gcc}" ${CFLAGS_x86} "${T}/check-ia32-emulation.c" -o "${T}/check-ia32-emulation.elf32"; then "${T}/check-ia32-emulation.elf32" STAT=$? else # Don't fail here to allow single->multi ABI switch # or recover from breakage like bug #646424 ewarn "Failed to compile the ABI test. Broken host glibc?" STAT=0 fi rm -f "${T}/check-ia32-emulation.elf32" eend $STAT [[ $STAT -eq 0 ]] || die "CONFIG_IA32_EMULATION must be enabled in the kernel to compile a multilib glibc." fi fi # When we actually have to compile something... if ! just_headers ; then local run_kv build_kv want_kv run_kv=$(g_get_running_KV) build_kv=$(g_int_to_KV $(get_kheader_version)) want_kv=${MIN_KERN_VER} ebegin "Checking gcc for __thread support" if ! eend $(want__thread ; echo $?) ; then echo eerror "Could not find a gcc that supports the __thread directive!" eerror "Please update your binutils/gcc and try again." die "No __thread support in gcc!" fi if ! is_crosscompile && ! tc-is-cross-compiler ; then # Building fails on an non-supporting kernel ebegin "Checking running kernel version (${run_kv} >= ${want_kv})" if ! eend_KV ${run_kv} ${want_kv} ; then echo eerror "You need a kernel of at least ${want_kv}!" die "Kernel version too low!" fi fi ebegin "Checking linux-headers version (${build_kv} >= ${want_kv})" if ! eend_KV ${build_kv} ${want_kv} ; then echo eerror "You need linux-headers of at least ${want_kv}!" die "linux-headers version too low!" fi fi } # # the phases # # pkg_pretend pkg_pretend() { # All the checks... einfo "Checking general environment sanity." sanity_prechecks } # src_unpack src_unpack() { # Consistency is not guaranteed between pkg_ and src_ ... sanity_prechecks use multilib && unpack gcc-${GCC_BOOTSTRAP_VER}-multilib-bootstrap.tar.bz2 setup_env if [[ -n ${EGIT_REPO_URI} ]] ; then git-r3_src_unpack else unpack ${P}.tar.xz fi cd "${S}" || die touch locale/C-translit.h || die #185476 #218003 cd "${WORKDIR}" || die unpack glibc-${RELEASE_VER}-patches-${PATCH_VER}.tar.bz2 } src_prepare() { if ! use vanilla ; then elog "Applying Gentoo Glibc Patchset ${RELEASE_VER}-${PATCH_VER}" eapply "${WORKDIR}"/patches einfo "Done." fi if just_headers ; then if [[ -e ports/sysdeps/mips/preconfigure ]] ; then # mips peeps like to screw with us. if building headers, # we don't have a real compiler, so we can't let them # insert -mabi on us. sed -i '/CPPFLAGS=.*-mabi/s|.*|:|' ports/sysdeps/mips/preconfigure || die find ports/sysdeps/mips/ -name Makefile -exec sed -i '/^CC.*-mabi=/s:-mabi=.*:-D_MIPS_SZPTR=32:' {} + fi fi default gnuconfig_update eapply "${FILESDIR}"/2.19/glibc-2.19-kernel-2.6.16-compat.patch eapply "${FILESDIR}"/2.19/glibc-2.19-kernel-2.6.16-hide-pipe2.patch eapply "${FILESDIR}"/2.19/glibc-2.19-gcc-10.patch cd "${WORKDIR}" find . -name configure -exec touch {} + eprefixify extra/locale/locale-gen # Fix permissions on some of the scripts. chmod u+x "${S}"/scripts/*.sh } glibc_do_configure() { # Glibc does not work with gold (for various reasons) #269274. tc-ld-disable-gold # CXX isnt handled by the multilib system, so if we dont unset here # we accumulate crap across abis unset CXX einfo "Configuring glibc for nptl" if use doc ; then export MAKEINFO=makeinfo else export MAKEINFO=/dev/null fi local v for v in ABI CBUILD CHOST CTARGET CBUILD_OPT CTARGET_OPT CC CXX LD {AS,C,CPP,CXX,LD}FLAGS MAKEINFO ; do einfo " $(printf '%15s' ${v}:) ${!v}" done # The glibc configure script doesn't properly use LDFLAGS all the time. export CC="$(tc-getCC ${CTARGET}) ${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)" einfo " $(printf '%15s' 'Manual CXX:') ${CXX}" echo local myconf=() case ${CTARGET} in powerpc-*) # Currently gcc on powerpc32 generates invalid code for # __builtin_return_address(0) calls. Normally programs # don't do that but malloc hooks in glibc do: # https://gcc.gnu.org/PR81996 # https://bugs.gentoo.org/629054 myconf+=( --enable-stack-protector=no ) ;; *) myconf+=( --enable-stack-protector=all ) ;; esac myconf+=( --enable-stackguard-randomization ) # Keep a whitelist of targets supporing IFUNC. glibc's ./configure # is not robust enough to detect proper support: # https://bugs.gentoo.org/641216 # https://sourceware.org/PR22634#c0 case $(tc-arch ${CTARGET}) in # Keep whitelist of targets where autodetection mostly works. amd64|x86|sparc|ppc|ppc64|arm|arm64|s390) ;; # Blacklist everywhere else *) myconf+=( libc_cv_ld_gnu_indirect_function=no ) ;; esac [[ $(tc-is-softfloat) == "yes" ]] && myconf+=( --without-fp ) myconf+=( --enable-kernel=${MIN_KERN_VER} ) # Since SELinux support is only required for nscd, only enable it if: # 1. USE selinux # 2. only for the primary ABI on multilib systems # 3. Not a crosscompile if ! is_crosscompile && use selinux ; then if use multilib ; then if is_final_abi ; then myconf+=( --with-selinux ) else myconf+=( --without-selinux ) fi else myconf+=( --with-selinux ) fi else myconf+=( --without-selinux ) fi # Force a few tests where we always know the answer but # configure is incapable of finding it. if is_crosscompile ; then export \ libc_cv_c_cleanup=yes \ libc_cv_forced_unwind=yes fi myconf+=( --without-cvs --disable-werror --enable-bind-now --build=${CBUILD_OPT:-${CBUILD}} --host=${CTARGET_OPT:-${CTARGET}} $(use_enable profile) $(use_with gd) --with-headers=$(alt_build_headers) --prefix="${EPREFIX}/usr" --sysconfdir="${EPREFIX}/etc" --localstatedir="${EPREFIX}/var" --libdir='$(prefix)'/$(get_libdir) --mandir='$(prefix)'/share/man --infodir='$(prefix)'/share/info --libexecdir='$(libdir)'/misc/glibc --with-bugurl=https://bugs.gentoo.org/ --with-pkgversion="$(glibc_banner)" $(use_enable systemtap) $(use_enable nscd) ${EXTRA_ECONF} ) # We rely on sys-libs/timezone-data for timezone tools normally. myconf+=( $(use_enable vanilla timezone-tools) ) # These libs don't have configure flags. ac_cv_lib_audit_audit_log_user_avc_message=$(usex audit || echo no) ac_cv_lib_cap_cap_init=$(usex caps || echo no) # There is no configure option for this and we need to export it # since the glibc build will re-run configure on itself export libc_cv_rootsbindir="${EPREFIX}/sbin" export libc_cv_slibdir="${EPREFIX}/$(get_libdir)" # We take care of patching our binutils to use both hash styles, # and many people like to force gnu hash style only, so disable # this overriding check. #347761 export libc_cv_hashstyle=no local builddir=$(builddir nptl) mkdir -p "${builddir}" cd "${builddir}" set -- "${S}"/configure "${myconf[@]}" echo "$@" "$@" || die "failed to configure glibc" # ia64 static cross-compilers are a pita in so much that they # can't produce static ELFs (as the libgcc.a is broken). so # disable building of the programs for those targets if it # doesn't work. # XXX: We could turn this into a compiler test, but ia64 is # the only one that matters, so this should be fine for now. if is_crosscompile && [[ ${CTARGET} == ia64* ]] ; then sed -i '1i+link-static = touch $@' config.make fi # If we're trying to migrate between ABI sets, we need # to lie and use a local copy of gcc. Like if the system # is built with MULTILIB_ABIS="amd64 x86" but we want to # add x32 to it, gcc/glibc don't yet support x32. # if [[ -n ${GCC_BOOTSTRAP_VER} ]] && use multilib ; then echo 'main(){}' > "${T}"/test.c if ! $(tc-getCC ${CTARGET}) ${CFLAGS} ${LDFLAGS} "${T}"/test.c -Wl,-emain -lgcc 2>/dev/null ; then sed -i -e '/^CC = /s:$: -B$(objdir)/../'"gcc-${GCC_BOOTSTRAP_VER}/${ABI}:" config.make || die fi fi } glibc_headers_configure() { export ABI=default local builddir=$(builddir "headers") mkdir -p "${builddir}" cd "${builddir}" # if we don't have a compiler yet, we can't really test it now ... # hopefully they don't affect header generation, so let's hope for # the best here ... local v vars=( ac_cv_header_cpuid_h=yes libc_cv_{386,390,alpha,arm,hppa,ia64,mips,{powerpc,sparc}{,32,64},sh,x86_64}_tls=yes libc_cv_asm_cfi_directives=yes libc_cv_broken_visibility_attribute=no libc_cv_c_cleanup=yes libc_cv_forced_unwind=yes libc_cv_gcc___thread=yes libc_cv_mlong_double_128=yes libc_cv_mlong_double_128ibm=yes libc_cv_ppc_machine=yes libc_cv_ppc_rel16=yes libc_cv_predef_fortify_source=no libc_cv_visibility_attribute=yes libc_cv_z_combreloc=yes libc_cv_z_execstack=yes libc_cv_z_initfirst=yes libc_cv_z_nodelete=yes libc_cv_z_nodlopen=yes libc_cv_z_relro=yes libc_mips_abi=${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 # 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 local myconf=() myconf+=( --disable-sanity-checks --enable-hacker-mode --without-cvs --disable-werror --enable-bind-now --build=${CBUILD_OPT:-${CBUILD}} --host=${CTARGET_OPT:-${CTARGET}} --with-headers=$(alt_build_headers) --prefix="${EPREFIX}/usr" ${EXTRA_ECONF} ) # Nothing is compiled here which would affect the headers for the target. # So forcing CC/CFLAGS is sane. set -- "${S}"/configure "${myconf[@]}" echo "$@" CC="$(tc-getBUILD_CC)" \ CFLAGS="-O1 -pipe" \ CPPFLAGS="-U_FORTIFY_SOURCE" \ LDFLAGS="" \ "$@" || die "failed to configure glibc" } do_src_configure() { if just_headers ; then glibc_headers_configure else glibc_do_configure nptl fi } src_configure() { foreach_abi do_src_configure } do_src_compile() { emake -C "$(builddir nptl)" } src_compile() { if just_headers ; then return fi foreach_abi do_src_compile } glibc_src_test() { cd "$(builddir nptl)" emake check } do_src_test() { local ret=0 glibc_src_test : $(( ret |= $? )) return ${ret} } src_test() { # Give tests more time to complete. export TIMEOUTFACTOR=5 foreach_abi do_src_test || die "tests failed" } run_locale_gen() { # if the host locales.gen contains no entries, we'll install everything local root="$1" local locale_list="${root}/etc/locale.gen" if [[ -z $(locale-gen --list --config "${locale_list}") ]] ; then ewarn "Generating all locales; edit /etc/locale.gen to save time/space" locale_list="${root}/usr/share/i18n/SUPPORTED" fi locale-gen --jobs $(makeopts_jobs) --config "${locale_list}" \ --destdir "${root}" } glibc_do_src_install() { local builddir=$(builddir nptl) cd "${builddir}" emake install_root="${D}$(alt_prefix)" install # This version (2.26) provides some compatibility libraries for the NIS/NIS+ support # which come without headers etc. Only needed for binary packages since the # external net-libs/libnsl has increased soversion. Keep only versioned libraries. find "${D}" -name "libnsl.a" -delete find "${D}" -name "libnsl.so" -delete # Normally upstream_pv is ${PV}. Live ebuilds are exception, there we need # to infer upstream version: # '#define VERSION "2.26.90"' -> '2.26.90' local upstream_pv=$(sed -n -r 's/#define VERSION "(.*)"/\1/p' "${S}"/version.h) if [[ -e ${ED}$(alt_usrlibdir)/libm-${upstream_pv}.a ]] ; then # Move versioned .a file out of libdir to evade portage QA checks # instead of using gen_usr_ldscript(). We fix ldscript as: # "GROUP ( /usr/lib64/libm-<pv>.a ..." -> "GROUP ( /usr/lib64/glibc-<pv>/libm-<pv>.a ..." sed -i "s@\(libm-${upstream_pv}.a\)@${P}/\1@" "${ED}"$(alt_usrlibdir)/libm.a || die dodir $(alt_usrlibdir)/${P} mv "${ED}"$(alt_usrlibdir)/libm-${upstream_pv}.a "${ED}"$(alt_usrlibdir)/${P}/libm-${upstream_pv}.a || die fi # We'll take care of the cache ourselves rm -f "${ED}"/etc/ld.so.cache # Everything past this point just needs to be done once ... is_final_abi || return 0 # Make sure the non-native interp can be found on multilib systems even # if the main library set isn't installed into the right place. Maybe # we should query the active gcc for info instead of hardcoding it ? local i ldso_abi ldso_name local ldso_abi_list=( # x86 amd64 /lib64/ld-linux-x86-64.so.2 x32 /libx32/ld-linux-x32.so.2 x86 /lib/ld-linux.so.2 # mips o32 /lib/ld.so.1 n32 /lib32/ld.so.1 n64 /lib64/ld.so.1 # powerpc ppc /lib/ld.so.1 # 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##*/} ${ldso_name} fi done # With devpts under Linux mounted properly, we do not need the pt_chown # binary to be setuid. This is because the default owners/perms will be # exactly what we want. if ! use suid ; then find "${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. cd "${ED}"$(alt_libdir)/.. [[ -e lib ]] || mkdir lib cd "${ED}"$(alt_usrlibdir)/.. [[ -e lib ]] || mkdir lib dosym usr/include $(alt_prefix)/sys-include return 0 fi # Files for Debian-style locale updating dodir /usr/share/i18n sed \ -e "/^#/d" \ -e "/SUPPORTED-LOCALES=/d" \ -e "s: \\\\::g" -e "s:/: :g" \ "${S}"/localedata/SUPPORTED > "${ED}"/usr/share/i18n/SUPPORTED \ || die "generating /usr/share/i18n/SUPPORTED failed" cd "${WORKDIR}"/extra/locale dosbin locale-gen doman *.[0-8] insinto /etc doins locale.gen # Make sure all the ABI's can find the locales and so we only # have to generate one set local a keepdir /usr/$(get_libdir)/locale for a in $(get_install_abis) ; do if [[ ! -e ${ED}/usr/$(get_abi_LIBDIR ${a})/locale ]] ; then dosym ../$(get_libdir)/locale /usr/$(get_abi_LIBDIR ${a})/locale fi done cd "${S}" # Install misc network config files insinto /etc doins nscd/nscd.conf posix/gai.conf nss/nsswitch.conf doins "${WORKDIR}"/extra/etc/*.conf if use nscd ; then doinitd "$(prefixify_ro "${WORKDIR}"/extra/etc/nscd)" local nscd_args=( -e "s:@PIDFILE@:$(strings "${ED}"/usr/sbin/nscd | grep nscd.pid):" ) sed -i "${nscd_args[@]}" "${ED}"/etc/init.d/nscd systemd_dounit nscd/nscd.service newtmpfiles nscd/nscd.tmpfiles nscd.conf else # Do this since extra/etc/*.conf above might have nscd.conf. rm -f "${ED}"/etc/nscd.conf fi echo 'LDPATH="include ld.so.conf.d/*.conf"' > "${T}"/00glibc doenvd "${T}"/00glibc for d in BUGS ChangeLog CONFORMANCE FAQ NEWS NOTES PROJECTS README* ; do [[ -s ${d} ]] && dodoc ${d} done # Prevent overwriting of the /etc/localtime symlink. We'll handle the # creation of the "factory" symlink in pkg_postinst(). rm -f "${ED}"/etc/localtime # Generate all locales if this is a native build as locale generation if use compile-locales && ! is_crosscompile ; then run_locale_gen "${ED}" fi } glibc_headers_install() { local builddir=$(builddir "headers") cd "${builddir}" emake install_root="${D}$(alt_prefix)" install-headers insinto $(alt_headers)/gnu doins "${S}"/include/gnu/stubs.h # Make sure we install the sys-include symlink so that when # we build a 2nd stage cross-compiler, gcc finds the target # system headers correctly. See gcc/doc/gccinstall.info dosym usr/include $(alt_prefix)/sys-include } src_install() { if just_headers ; then export ABI=default glibc_headers_install return fi foreach_abi glibc_do_src_install } # Simple test to make sure our new glibc isn't completely broken. # Make sure we don't test with statically built binaries since # they will fail. Also, skip if this glibc is a cross compiler. # # If coreutils is built with USE=multicall, some of these files # will just be wrapper scripts, not actual ELFs we can test. glibc_sanity_check() { cd / #228809 # We enter ${ED} so to avoid trouble if the path contains # special characters; for instance if the path contains the # colon character (:), then the linker will try to split it # and look for the libraries in an unexpected place. This can # lead to unsafe code execution if the generated prefix is # within a world-writable directory. # (e.g. /var/tmp/portage:${HOSTNAME}) pushd "${ED}"/$(get_libdir) >/dev/null local x striptest for x in cal date env free ls true uname uptime ; do x=$(type -p ${x}) [[ -z ${x} || ${x} != ${EPREFIX}/* ]] && continue striptest=$(LC_ALL="C" file -L ${x} 2>/dev/null) || continue case ${striptest} in *"statically linked"*) continue;; *"ASCII text"*) continue;; esac # We need to clear the locale settings as the upgrade might want # incompatible locale data. This test is not for verifying that. LC_ALL=C \ ./ld-*.so --library-path . ${x} > /dev/null \ || die "simple run test (${x}) failed" done popd >/dev/null } pkg_preinst() { # nothing to do if just installing headers just_headers && return # prepare /etc/ld.so.conf.d/ for files mkdir -p "${EROOT}"/etc/ld.so.conf.d # Default /etc/hosts.conf:multi to on for systems with small dbs. if [[ $(wc -l < "${EROOT}"/etc/hosts) -lt 1000 ]] ; then sed -i '/^multi off/s:off:on:' "${ED}"/etc/host.conf einfo "Defaulting /etc/host.conf:multi to on" fi [[ ${ROOT} != "/" ]] && return 0 [[ -d ${ED}/$(get_libdir) ]] || return 0 [[ -z ${BOOTSTRAP_RAP} ]] && glibc_sanity_check } pkg_postinst() { # nothing to do if just installing headers just_headers && return if ! tc-is-cross-compiler && [[ -x ${EROOT}/usr/sbin/iconvconfig ]] ; then # Generate fastloading iconv module configuration file. "${EROOT}"/usr/sbin/iconvconfig --prefix="${ROOT}" fi if ! is_crosscompile && [[ ${ROOT} == "/" ]] ; then use compile-locales || run_locale_gen "${EROOT}" fi # Check for sanity of /etc/nsswitch.conf, take 2 if [[ -e ${EROOT}/etc/nsswitch.conf ]] && ! has_version sys-auth/libnss-nis ; then local entry for entry in passwd group shadow; do if egrep -q "^[ \t]*${entry}:.*nis" "${EROOT}"/etc/nsswitch.conf; then ewarn "" ewarn "Your ${EROOT}/etc/nsswitch.conf uses NIS. Support for that has been" ewarn "removed from glibc and is now provided by the package" ewarn " sys-auth/libnss-nis" ewarn "Install it now to keep your NIS setup working." ewarn "" fi done fi }