eclass/toolchain-glibc.eclass

   1 # Copyright 1999-2018 Gentoo Foundation
   2 # Distributed under the terms of the GNU General Public License v2
   3
   4 # @ECLASS: toolchain-glibc.eclass
   5 # @MAINTAINER:
   6 # <toolchain@gentoo.org>
   7 # @BLURB: Common code for sys-libs/glibc ebuilds
   8 # @DESCRIPTION:
   9 # This eclass contains the common phase functions migrated from
  10 # sys-libs/glibc eblits.
  11
  12 if [[ -z ${_TOOLCHAIN_GLIBC_ECLASS} ]]; then
  13
  14 inherit eutils versionator toolchain-funcs flag-o-matic gnuconfig \
  15         multilib systemd unpacker multiprocessing prefix
  16
  17 case ${EAPI:-0} in
  18         0|1|2|3) EXPORT_FUNCTIONS pkg_setup src_unpack src_compile src_test \
  19                 src_install pkg_preinst pkg_postinst;;
  20         2|3) EXPORT_FUNCTIONS pkg_setup src_unpack src_prepare src_configure \
  21                 src_compile src_test src_install pkg_preinst pkg_postinst;;
  22         4|5) EXPORT_FUNCTIONS pkg_pretend pkg_setup src_unpack src_prepare \
  23                 src_configure src_compile src_test src_install \
  24                 pkg_preinst pkg_postinst;;
  25         6) EXPORT_FUNCTIONS pkg_pretend;;
  26         *) die "Unsupported EAPI=${EAPI}";;
  27 esac
  28
  29 # == common ==
  30
  31 alt_prefix() {
  32         is_crosscompile && echo /usr/${CTARGET}
  33 }
  34
  35 if [[ ${EAPI:-0} == [012] ]] ; then
  36         : ${ED:=${D}}
  37         : ${EROOT:=${ROOT}}
  38 fi
  39 # This indirection is for binpkgs. #523332
  40 _nonfatal() { nonfatal "$@" ; }
  41 if [[ ${EAPI:-0} == [0123] ]] ; then
  42         nonfatal() { "$@" ; }
  43         _nonfatal() { "$@" ; }
  44 fi
  45
  46 # We need to be able to set alternative headers for
  47 # compiling for non-native platform
  48 # Will also become useful for testing kernel-headers without screwing up
  49 # the whole system.
  50 # note: intentionally undocumented.
  51 alt_headers() {
  52         echo ${ALT_HEADERS:=$(alt_prefix)/usr/include}
  53 }
  54 alt_build_headers() {
  55         if [[ -z ${ALT_BUILD_HEADERS} ]] ; then
  56                 ALT_BUILD_HEADERS="${EPREFIX}$(alt_headers)"
  57                 if tc-is-cross-compiler ; then
  58                         ALT_BUILD_HEADERS=${SYSROOT}$(alt_headers)
  59                         if [[ ! -e ${ALT_BUILD_HEADERS}/linux/version.h ]] ; then
  60                                 local header_path=$(echo '#include <linux/version.h>' | $(tc-getCPP ${CTARGET}) ${CFLAGS} 2>&1 | grep -o '[^"]*linux/version.h')
  61                                 ALT_BUILD_HEADERS=${header_path%/linux/version.h}
  62                         fi
  63                 fi
  64         fi
  65         echo "${ALT_BUILD_HEADERS}"
  66 }
  67
  68 alt_libdir() {
  69         echo $(alt_prefix)/$(get_libdir)
  70 }
  71 alt_usrlibdir() {
  72         echo $(alt_prefix)/usr/$(get_libdir)
  73 }
  74
  75 builddir() {
  76         echo "${WORKDIR}/build-${ABI}-${CTARGET}-$1"
  77 }
  78
  79 setup_target_flags() {
  80         # This largely mucks with compiler flags.  None of which should matter
  81         # when building up just the headers.
  82         just_headers && return 0
  83
  84         case $(tc-arch) in
  85                 x86)
  86                         # -march needed for #185404 #199334
  87                         # TODO: When creating the first glibc cross-compile, this test will
  88                         # always fail as it does a full link which in turn requires glibc.
  89                         # Probably also applies when changing multilib profile settings (e.g.
  90                         # enabling x86 when the profile was amd64-only previously).
  91                         # We could change main to _start and pass -nostdlib here so that we
  92                         # only test the gcc code compilation.  Or we could do a compile and
  93                         # then look for the symbol via scanelf.
  94                         if ! glibc_compile_test "" 'void f(int i, void *p) {if (__sync_fetch_and_add(&i, 1)) f(i, p);}\nint main(){return 0;}\n' 2>/dev/null ; then
  95                                 local t=${CTARGET_OPT:-${CTARGET}}
  96                                 t=${t%%-*}
  97                                 filter-flags '-march=*'
  98                                 export CFLAGS="-march=${t} ${CFLAGS}"
  99                                 einfo "Auto adding -march=${t} to CFLAGS #185404"
 100                         fi
 101                 ;;
 102                 amd64)
 103                         # -march needed for #185404 #199334
 104                         # Note: This test only matters when the x86 ABI is enabled, so we could
 105                         # optimize a bit and elide it.
 106                         # TODO: See cross-compile issues listed above for x86.
 107                         if ! glibc_compile_test "${CFLAGS_x86}" 'void f(int i, void *p) {if (__sync_fetch_and_add(&i, 1)) f(i, p);}\nint main(){return 0;}\n' 2>/dev/null ; then
 108                                 local t=${CTARGET_OPT:-${CTARGET}}
 109                                 t=${t%%-*}
 110                                 # Normally the target is x86_64-xxx, so turn that into the -march that
 111                                 # gcc actually accepts. #528708
 112                                 [[ ${t} == "x86_64" ]] && t="x86-64"
 113                                 filter-flags '-march=*'
 114                                 # ugly, ugly, ugly.  ugly.
 115                                 CFLAGS_x86=$(CFLAGS=${CFLAGS_x86} filter-flags '-march=*'; echo "${CFLAGS}")
 116                                 export CFLAGS_x86="${CFLAGS_x86} -march=${t}"
 117                                 einfo "Auto adding -march=${t} to CFLAGS_x86 #185404"
 118                         fi
 119                 ;;
 120                 mips)
 121                         # The mips abi cannot support the GNU style hashes. #233233
 122                         filter-ldflags -Wl,--hash-style=gnu -Wl,--hash-style=both
 123                 ;;
 124                 sparc)
 125                         # Both sparc and sparc64 can use -fcall-used-g6.  -g7 is bad, though.
 126                         filter-flags "-fcall-used-g7"
 127                         append-flags "-fcall-used-g6"
 128
 129                         # If the CHOST is the basic one (e.g. not sparcv9-xxx already),
 130                         # try to pick a better one so glibc can use cpu-specific .S files.
 131                         # We key off the CFLAGS to get a good value.  Also need to handle
 132                         # version skew.
 133                         # We can't force users to set their CHOST to their exact machine
 134                         # as many of these are not recognized by config.sub/gcc and such :(.
 135                         # Note: If the mcpu values don't scale, we might try probing CPP defines.
 136                         # Note: Should we factor in -Wa,-AvXXX flags too ?  Or -mvis/etc... ?
 137
 138                         local cpu
 139                         case ${CTARGET} in
 140                         sparc64-*)
 141                                 case $(get-flag mcpu) in
 142                                 niagara[234])
 143                                         if version_is_at_least 2.8 ; then
 144                                                 cpu="sparc64v2"
 145                                         elif version_is_at_least 2.4 ; then
 146                                                 cpu="sparc64v"
 147                                         elif version_is_at_least 2.2.3 ; then
 148                                                 cpu="sparc64b"
 149                                         fi
 150                                         ;;
 151                                 niagara)
 152                                         if version_is_at_least 2.4 ; then
 153                                                 cpu="sparc64v"
 154                                         elif version_is_at_least 2.2.3 ; then
 155                                                 cpu="sparc64b"
 156                                         fi
 157                                         ;;
 158                                 ultrasparc3)
 159                                         cpu="sparc64b"
 160                                         ;;
 161                                 *)
 162                                         # We need to force at least v9a because the base build doesn't
 163                                         # work with just v9.
 164                                         # https://sourceware.org/bugzilla/show_bug.cgi?id=19477
 165                                         [[ -z ${cpu} ]] && append-flags "-Wa,-xarch=v9a"
 166                                         ;;
 167                                 esac
 168                                 ;;
 169                         sparc-*)
 170                                 case $(get-flag mcpu) in
 171                                 niagara[234])
 172                                         if version_is_at_least 2.8 ; then
 173                                                 cpu="sparcv9v2"
 174                                         elif version_is_at_least 2.4 ; then
 175                                                 cpu="sparcv9v"
 176                                         elif version_is_at_least 2.2.3 ; then
 177                                                 cpu="sparcv9b"
 178                                         else
 179                                                 cpu="sparcv9"
 180                                         fi
 181                                         ;;
 182                                 niagara)
 183                                         if version_is_at_least 2.4 ; then
 184                                                 cpu="sparcv9v"
 185                                         elif version_is_at_least 2.2.3 ; then
 186                                                 cpu="sparcv9b"
 187                                         else
 188                                                 cpu="sparcv9"
 189                                         fi
 190                                         ;;
 191                                 ultrasparc3)
 192                                         cpu="sparcv9b"
 193                                         ;;
 194                                 v9|ultrasparc)
 195                                         cpu="sparcv9"
 196                                         ;;
 197                                 v8|supersparc|hypersparc|leon|leon3)
 198                                         cpu="sparcv8"
 199                                         ;;
 200                                 esac
 201                         ;;
 202                         esac
 203                         [[ -n ${cpu} ]] && CTARGET_OPT="${cpu}-${CTARGET#*-}"
 204                 ;;
 205         esac
 206 }
 207
 208 setup_flags() {
 209         # Make sure host make.conf doesn't pollute us
 210         if is_crosscompile || tc-is-cross-compiler ; then
 211                 CHOST=${CTARGET} strip-unsupported-flags
 212         fi
 213
 214         # Store our CFLAGS because it's changed depending on which CTARGET
 215         # we are building when pulling glibc on a multilib profile
 216         CFLAGS_BASE=${CFLAGS_BASE-${CFLAGS}}
 217         CFLAGS=${CFLAGS_BASE}
 218         CXXFLAGS_BASE=${CXXFLAGS_BASE-${CXXFLAGS}}
 219         CXXFLAGS=${CXXFLAGS_BASE}
 220         ASFLAGS_BASE=${ASFLAGS_BASE-${ASFLAGS}}
 221         ASFLAGS=${ASFLAGS_BASE}
 222
 223         # Over-zealous CFLAGS can often cause problems.  What may work for one
 224         # person may not work for another.  To avoid a large influx of bugs
 225         # relating to failed builds, we strip most CFLAGS out to ensure as few
 226         # problems as possible.
 227         strip-flags
 228         strip-unsupported-flags
 229         filter-flags -m32 -m64 -mabi=*
 230         filter-ldflags -Wl,-rpath=*
 231
 232         # Bug 492892.
 233         filter-flags -frecord-gcc-switches
 234
 235         unset CBUILD_OPT CTARGET_OPT
 236         if use multilib ; then
 237                 CTARGET_OPT=$(get_abi_CTARGET)
 238                 [[ -z ${CTARGET_OPT} ]] && CTARGET_OPT=$(get_abi_CHOST)
 239         fi
 240
 241         setup_target_flags
 242
 243         if [[ -n ${CTARGET_OPT} && ${CBUILD} == ${CHOST} ]] && ! is_crosscompile; then
 244                 CBUILD_OPT=${CTARGET_OPT}
 245         fi
 246
 247         # Lock glibc at -O2 -- linuxthreads needs it and we want to be
 248         # conservative here.  -fno-strict-aliasing is to work around #155906
 249         filter-flags -O?
 250         append-flags -O2 -fno-strict-aliasing
 251
 252         # Can't build glibc itself with fortify code.  Newer versions add
 253         # this flag for us, so no need to do it manually.
 254         version_is_at_least 2.16 ${PV} || append-cppflags -U_FORTIFY_SOURCE
 255
 256         # building glibc <2.25 with SSP is fraught with difficulty, especially
 257         # due to __stack_chk_fail_local which would mean significant changes
 258         # to the glibc build process. See bug #94325 #293721
 259         # Note we have to handle both user-given CFLAGS and gcc defaults via
 260         # spec rules here.  We can't simply add -fno-stack-protector as it gets
 261         # added before user flags, and we can't just filter-flags because
 262         # _filter_hardened doesn't support globs.
 263         filter-flags -fstack-protector*
 264         if ! version_is_at_least 2.25 ; then
 265                 tc-enables-ssp && append-flags $(test-flags -fno-stack-protector)
 266         fi
 267
 268         if [[ $(gcc-major-version) -lt 6 ]]; then
 269                 # Starting with gcc-6 (and fully upstreamed pie patches) we control
 270                 # default enabled/disabled pie via use flags. So nothing to do
 271                 # here. #618160
 272
 273                 if use hardened && tc-enables-pie ; then
 274                         # Force PIC macro definition for all compilations since they're all
 275                         # either -fPIC or -fPIE with the default-PIE compiler.
 276                         append-cppflags -DPIC
 277                 else
 278                         # Don't build -fPIE without the default-PIE compiler and the
 279                         # hardened-pie patch
 280                         filter-flags -fPIE
 281                 fi
 282         fi
 283 }
 284
 285 want_nptl() {
 286         [[ -z ${LT_VER} ]] && return 0
 287         want_tls || return 1
 288         use nptl || return 1
 289
 290         # Older versions of glibc had incomplete arch support for nptl.
 291         # But if you're building those now, you can handle USE=nptl yourself.
 292         return 0
 293 }
 294
 295 want_linuxthreads() {
 296         [[ -z ${LT_VER} ]] && return 1
 297         use linuxthreads
 298 }
 299
 300 want_tls() {
 301         # Archs that can use TLS (Thread Local Storage)
 302         case $(tc-arch) in
 303                 x86)
 304                         # requires i486 or better #106556
 305                         [[ ${CTARGET} == i[4567]86* ]] && return 0
 306                         return 1
 307                 ;;
 308         esac
 309
 310         return 0
 311 }
 312
 313 want__thread() {
 314         want_tls || return 1
 315
 316         # For some reason --with-tls --with__thread is causing segfaults on sparc32.
 317         [[ ${PROFILE_ARCH} == "sparc" ]] && return 1
 318
 319         [[ -n ${WANT__THREAD} ]] && return ${WANT__THREAD}
 320
 321         # only test gcc -- can't test linking yet
 322         tc-has-tls -c ${CTARGET}
 323         WANT__THREAD=$?
 324
 325         return ${WANT__THREAD}
 326 }
 327
 328 use_multiarch() {
 329         # Make sure binutils is new enough to support indirect functions #336792
 330         # This funky sed supports gold and bfd linkers.
 331         local bver nver
 332         bver=$($(tc-getLD ${CTARGET}) -v | sed -n -r '1{s:[^0-9]*::;s:^([0-9.]*).*:\1:;p}')
 333         case $(tc-arch ${CTARGET}) in
 334         amd64|x86) nver="2.20" ;;
 335         arm)       nver="2.22" ;;
 336         hppa)      nver="2.23" ;;
 337         ppc|ppc64) nver="2.20" ;;
 338         # ifunc was added in 2.23, but glibc also needs machinemode which is in 2.24.
 339         s390)      nver="2.24" ;;
 340         sparc)     nver="2.21" ;;
 341         *)         return 1 ;;
 342         esac
 343         version_is_at_least ${nver} ${bver}
 344 }
 345
 346 # Setup toolchain variables that had historically
 347 # been defined in the profiles for these archs.
 348 setup_env() {
 349         # silly users
 350         unset LD_RUN_PATH
 351         unset LD_ASSUME_KERNEL
 352
 353         if is_crosscompile || tc-is-cross-compiler ; then
 354                 multilib_env ${CTARGET_OPT:-${CTARGET}}
 355
 356                 if ! use multilib ; then
 357                         MULTILIB_ABIS=${DEFAULT_ABI}
 358                 else
 359                         MULTILIB_ABIS=${MULTILIB_ABIS:-${DEFAULT_ABI}}
 360                 fi
 361
 362                 # If the user has CFLAGS_<CTARGET> in their make.conf, use that,
 363                 # and fall back on CFLAGS.
 364                 local VAR=CFLAGS_${CTARGET//[-.]/_}
 365                 CFLAGS=${!VAR-${CFLAGS}}
 366                 einfo " $(printf '%15s' 'Manual CFLAGS:')   ${CFLAGS}"
 367         fi
 368
 369         setup_flags
 370
 371         export ABI=${ABI:-${DEFAULT_ABI:-default}}
 372
 373         if use headers-only ; then
 374                 # Avoid mixing host's CC and target's CFLAGS_${ABI}:
 375                 # At this bootstrap stage we have only binutils for
 376                 # target but not compiler yet.
 377                 einfo "Skip CC ABI injection. We can't use (cross-)compiler yet."
 378                 return 0
 379         fi
 380
 381         local VAR=CFLAGS_${ABI}
 382         # We need to export CFLAGS with abi information in them because glibc's
 383         # configure script checks CFLAGS for some targets (like mips).  Keep
 384         # around the original clean value to avoid appending multiple ABIs on
 385         # top of each other.
 386         : ${__GLIBC_CC:=$(tc-getCC ${CTARGET_OPT:-${CTARGET}})}
 387         export __GLIBC_CC CC="${__GLIBC_CC} ${!VAR}"
 388         einfo " $(printf '%15s' 'Manual CC:')   ${CC}"
 389 }
 390
 391 foreach_abi() {
 392         setup_env
 393
 394         local ret=0
 395         local abilist=""
 396         if use multilib ; then
 397                 abilist=$(get_install_abis)
 398         else
 399                 abilist=${DEFAULT_ABI}
 400         fi
 401         local -x ABI
 402         for ABI in ${abilist:-default} ; do
 403                 setup_env
 404                 einfo "Running $1 for ABI ${ABI}"
 405                 $1
 406                 : $(( ret |= $? ))
 407         done
 408         return ${ret}
 409 }
 410
 411 just_headers() {
 412         is_crosscompile && use headers-only
 413 }
 414
 415 glibc_banner() {
 416         local b="Gentoo ${PVR}"
 417         [[ -n ${SNAP_VER} ]] && b+=" snapshot ${SNAP_VER}"
 418         [[ -n ${BRANCH_UPDATE} ]] && b+=" branch ${BRANCH_UPDATE}"
 419         [[ -n ${PATCH_VER} ]] && ! use vanilla && b+=" p${PATCH_VER}"
 420         echo "${b}"
 421 }
 422
 423 # == phases ==
 424
 425 glibc_compile_test() {
 426         local ret save_cflags=${CFLAGS}
 427         CFLAGS+=" $1"
 428         shift
 429
 430         pushd "${T}" >/dev/null
 431
 432         rm -f glibc-test*
 433         printf '%b' "$*" > glibc-test.c
 434
 435         _nonfatal emake -s glibc-test
 436         ret=$?
 437
 438         popd >/dev/null
 439
 440         CFLAGS=${save_cflags}
 441         return ${ret}
 442 }
 443
 444 glibc_run_test() {
 445         local ret
 446
 447         if [[ ${EMERGE_FROM} == "binary" ]] ; then
 448                 # ignore build failures when installing a binary package #324685
 449                 glibc_compile_test "" "$@" 2>/dev/null || return 0
 450         else
 451                 if ! glibc_compile_test "" "$@" ; then
 452                         ewarn "Simple build failed ... assuming this is desired #324685"
 453                         return 0
 454                 fi
 455         fi
 456
 457         pushd "${T}" >/dev/null
 458
 459         ./glibc-test
 460         ret=$?
 461         rm -f glibc-test*
 462
 463         popd >/dev/null
 464
 465         return ${ret}
 466 }
 467
 468 check_devpts() {
 469         # Make sure devpts is mounted correctly for use w/out setuid pt_chown.
 470
 471         # If merely building the binary package, then there's nothing to verify.
 472         [[ ${MERGE_TYPE} == "buildonly" ]] && return
 473
 474         # Only sanity check when installing the native glibc.
 475         [[ ${ROOT} != "/" ]] && return
 476
 477         # Older versions always installed setuid, so no need to check.
 478         in_iuse suid || return
 479
 480         # If they're opting in to the old suid code, then no need to check.
 481         use suid && return
 482
 483         if awk '$3 == "devpts" && $4 ~ /[, ]gid=5[, ]/ { exit 1 }' /proc/mounts ; then
 484                 eerror "In order to use glibc with USE=-suid, you must make sure that"
 485                 eerror "you have devpts mounted at /dev/pts with the gid=5 option."
 486                 eerror "Openrc should do this for you, so you should check /etc/fstab"
 487                 eerror "and make sure you do not have any invalid settings there."
 488                 # Do not die on older kernels as devpts did not export these settings #489520.
 489                 if version_is_at_least 2.6.25 $(uname -r) ; then
 490                         die "mount & fix your /dev/pts settings"
 491                 fi
 492         fi
 493 }
 494
 495 toolchain-glibc_pkg_pretend() {
 496         if [[ ${EAPI:-0} == 6 ]]; then
 497                 eerror "We're moving code back to the ebuilds to get away from the ancient EAPI cruft."
 498                 eerror "From EAPI=6 on you'll have to define the phases in the glibc ebuilds."
 499                 die "Silly overlay authors..."
 500         fi
 501
 502         # For older EAPIs, this is run in pkg_preinst.
 503         if [[ ${EAPI:-0} != [0123] ]] ; then
 504                 check_devpts
 505         fi
 506
 507         # Prevent native builds from downgrading.
 508         if [[ ${MERGE_TYPE} != "buildonly" ]] && \
 509            [[ ${ROOT} == "/" ]] && \
 510            [[ ${CBUILD} == ${CHOST} ]] && \
 511            [[ ${CHOST} == ${CTARGET} ]] ; then
 512                 # The high rev # is to allow people to downgrade between -r# versions.
 513                 # We want to block 2.20->2.19, but 2.20-r3->2.20-r2 should be fine.
 514                 # Hopefully we never actually use a r# this high.
 515                 if has_version ">${CATEGORY}/${P}-r10000" ; then
 516                         eerror "Sanity check to keep you from breaking your system:"
 517                         eerror " Downgrading glibc is not supported and a sure way to destruction"
 518                         die "aborting to save your system"
 519                 fi
 520
 521                 if ! glibc_run_test '#include <pwd.h>\nint main(){return getpwuid(0)==0;}\n'
 522                 then
 523                         eerror "Your patched vendor kernel is broken.  You need to get an"
 524                         eerror "update from whoever is providing the kernel to you."
 525                         eerror "https://sourceware.org/bugzilla/show_bug.cgi?id=5227"
 526                         eerror "http://bugs.gentoo.org/262698"
 527                         die "keeping your system alive, say thank you"
 528                 fi
 529
 530                 if ! glibc_run_test '#include <unistd.h>\n#include <sys/syscall.h>\nint main(){return syscall(1000)!=-1;}\n'
 531                 then
 532                         eerror "Your old kernel is broken.  You need to update it to"
 533                         eerror "a newer version as syscall(<bignum>) will break."
 534                         eerror "http://bugs.gentoo.org/279260"
 535                         die "keeping your system alive, say thank you"
 536                 fi
 537         fi
 538
 539         # users have had a chance to phase themselves, time to give em the boot
 540         if [[ -e ${EROOT}/etc/locale.gen ]] && [[ -e ${EROOT}/etc/locales.build ]] ; then
 541                 eerror "You still haven't deleted ${EROOT}/etc/locales.build."
 542                 eerror "Do so now after making sure ${EROOT}/etc/locale.gen is kosher."
 543                 die "lazy upgrader detected"
 544         fi
 545
 546         if [[ ${CTARGET} == i386-* ]] ; then
 547                 eerror "i386 CHOSTs are no longer supported."
 548                 eerror "Chances are you don't actually want/need i386."
 549                 eerror "Please read http://www.gentoo.org/doc/en/change-chost.xml"
 550                 die "please fix your CHOST"
 551         fi
 552
 553         if [[ -e /proc/xen ]] && [[ $(tc-arch) == "x86" ]] && ! is-flag -mno-tls-direct-seg-refs ; then
 554                 ewarn "You are using Xen but don't have -mno-tls-direct-seg-refs in your CFLAGS."
 555                 ewarn "This will result in a 50% performance penalty when running with a 32bit"
 556                 ewarn "hypervisor, which is probably not what you want."
 557         fi
 558
 559         use hardened && ! tc-enables-pie && \
 560                 ewarn "PIE hardening not applied, as your compiler doesn't default to PIE"
 561
 562         # Make sure host system is up to date #394453
 563         if has_version '<sys-libs/glibc-2.13' && \
 564            [[ -n $(scanelf -qys__guard -F'#s%F' "${EROOT}"/lib*/l*-*.so) ]]
 565         then
 566                 ebegin "Scanning system for __guard to see if you need to rebuild first ..."
 567                 local files=$(
 568                         scanelf -qys__guard -F'#s%F' \
 569                                 "${EROOT}"/*bin/ \
 570                                 "${EROOT}"/lib* \
 571                                 "${EROOT}"/usr/*bin/ \
 572                                 "${EROOT}"/usr/lib* | \
 573                                 egrep -v \
 574                                         -e "^${EROOT}/lib.*/(libc|ld)-2.*.so$" \
 575                                         -e "^${EROOT}/sbin/(ldconfig|sln)$"
 576                 )
 577                 [[ -z ${files} ]]
 578                 if ! eend $? ; then
 579                         eerror "Your system still has old SSP __guard symbols.  You need to"
 580                         eerror "rebuild all the packages that provide these files first:"
 581                         eerror "${files}"
 582                         die "old __guard detected"
 583                 fi
 584         fi
 585 }
 586
 587 toolchain-glibc_pkg_setup() {
 588         [[ ${EAPI:-0} == [0123] ]] && toolchain-glibc_pkg_pretend
 589 }
 590
 591 int_to_KV() {
 592         local version=$1 major minor micro
 593         major=$((version / 65536))
 594         minor=$(((version % 65536) / 256))
 595         micro=$((version % 256))
 596         echo ${major}.${minor}.${micro}
 597 }
 598
 599 eend_KV() {
 600         [[ $(KV_to_int $1) -ge $(KV_to_int $2) ]]
 601         eend $?
 602 }
 603
 604 get_kheader_version() {
 605         printf '#include <linux/version.h>\nLINUX_VERSION_CODE\n' | \
 606         $(tc-getCPP ${CTARGET}) -I "$(alt_build_headers)" - | \
 607         tail -n 1
 608 }
 609
 610 check_nptl_support() {
 611         # don't care about the compiler here as we aren't using it
 612         just_headers && return
 613
 614         local run_kv build_kv want_kv
 615         run_kv=$(int_to_KV $(get_KV))
 616         build_kv=$(int_to_KV $(get_kheader_version))
 617         want_kv=${NPTL_KERN_VER}
 618
 619         ebegin "Checking gcc for __thread support"
 620         if ! eend $(want__thread ; echo $?) ; then
 621                 echo
 622                 eerror "Could not find a gcc that supports the __thread directive!"
 623                 eerror "Please update your binutils/gcc and try again."
 624                 die "No __thread support in gcc!"
 625         fi
 626
 627         if ! is_crosscompile && ! tc-is-cross-compiler ; then
 628                 # Building fails on an non-supporting kernel
 629                 ebegin "Checking kernel version (${run_kv} >= ${want_kv})"
 630                 if ! eend_KV ${run_kv} ${want_kv} ; then
 631                         echo
 632                         eerror "You need a kernel of at least ${want_kv} for NPTL support!"
 633                         die "Kernel version too low!"
 634                 fi
 635         fi
 636
 637         ebegin "Checking linux-headers version (${build_kv} >= ${want_kv})"
 638         if ! eend_KV ${build_kv} ${want_kv} ; then
 639                 echo
 640                 eerror "You need linux-headers of at least ${want_kv} for NPTL support!"
 641                 die "linux-headers version too low!"
 642         fi
 643 }
 644
 645 unpack_pkg() {
 646         local a=${PN}
 647         [[ -n ${SNAP_VER} ]] && a="${a}-${RELEASE_VER}"
 648         [[ -n $1 ]] && a="${a}-$1"
 649         if [[ -n ${SNAP_VER} ]] ; then
 650                 a="${a}-${SNAP_VER}"
 651         else
 652                 if [[ -n $2 ]] ; then
 653                         a="${a}-$2"
 654                 else
 655                         a="${a}-${RELEASE_VER}"
 656                 fi
 657         fi
 658         if has ${a}.tar.xz ${A} ; then
 659                 unpacker ${a}.tar.xz
 660         else
 661                 unpack ${a}.tar.bz2
 662         fi
 663         [[ -n $1 ]] && { mv ${a} $1 || die ; }
 664 }
 665
 666 toolchain-glibc_do_src_unpack() {
 667         # Check NPTL support _before_ we unpack things to save some time
 668         want_nptl && check_nptl_support
 669
 670         unpack_pkg
 671
 672         cd "${S}"
 673         touch locale/C-translit.h #185476 #218003
 674         [[ -n ${LT_VER}     ]] && unpack_pkg linuxthreads ${LT_VER}
 675         [[ -n ${PORTS_VER}  ]] && unpack_pkg ports ${PORTS_VER}
 676         [[ -n ${LIBIDN_VER} ]] && unpack_pkg libidn
 677
 678         if [[ -n ${PATCH_VER} ]] ; then
 679                 cd "${WORKDIR}"
 680                 unpack glibc-${RELEASE_VER}-patches-${PATCH_VER}.tar.bz2
 681                 # pull out all the addons
 682                 local d
 683                 for d in extra/*/configure ; do
 684                         d=${d%/configure}
 685                         [[ -d ${S}/${d} ]] && die "${d} already exists in \${S}"
 686                         mv "${d}" "${S}" || die "moving ${d} failed"
 687                 done
 688         fi
 689 }
 690
 691 toolchain-glibc_src_unpack() {
 692         setup_env
 693
 694         toolchain-glibc_do_src_unpack
 695         [[ ${EAPI:-0} == [01] ]] && cd "${S}" && toolchain-glibc_src_prepare
 696 }
 697
 698 toolchain-glibc_src_prepare() {
 699         # XXX: We should do the branchupdate, before extracting the manpages and
 700         # infopages else it does not help much (mtimes change if there is a change
 701         # to them with branchupdate)
 702         if [[ -n ${BRANCH_UPDATE} ]] ; then
 703                 epatch "${DISTDIR}"/glibc-${RELEASE_VER}-branch-update-${BRANCH_UPDATE}.patch.bz2
 704
 705                 # Snapshot date patch
 706                 einfo "Patching version to display snapshot date ..."
 707                 sed -i -e "s:\(#define RELEASE\).*:\1 \"${BRANCH_UPDATE}\":" version.h
 708         fi
 709
 710         # tag, glibc is it
 711         if ! version_is_at_least 2.17 ; then
 712                 [[ -e csu/Banner ]] && die "need new banner location"
 713                 glibc_banner > csu/Banner
 714         fi
 715         if [[ -n ${PATCH_VER} ]] && ! use vanilla ; then
 716                 EPATCH_MULTI_MSG="Applying Gentoo Glibc Patchset ${RELEASE_VER}-${PATCH_VER} ..." \
 717                 EPATCH_EXCLUDE=${GLIBC_PATCH_EXCLUDE} \
 718                 EPATCH_SUFFIX="patch" \
 719                 ARCH=$(tc-arch) \
 720                 epatch "${WORKDIR}"/patches
 721         fi
 722
 723         if just_headers ; then
 724                 if [[ -e ports/sysdeps/mips/preconfigure ]] ; then
 725                         # mips peeps like to screw with us.  if building headers,
 726                         # we don't have a real compiler, so we can't let them
 727                         # insert -mabi on us.
 728                         sed -i '/CPPFLAGS=.*-mabi/s|.*|:|' ports/sysdeps/mips/preconfigure || die
 729                         find ports/sysdeps/mips/ -name Makefile -exec sed -i '/^CC.*-mabi=/s:-mabi=.*:-D_MIPS_SZPTR=32:' {} +
 730                 fi
 731         fi
 732
 733         epatch_user
 734
 735         gnuconfig_update
 736
 737         # Glibc is stupid sometimes, and doesn't realize that with a
 738         # static C-Only gcc, -lgcc_eh doesn't exist.
 739         # https://sourceware.org/ml/libc-alpha/2003-09/msg00100.html
 740         # https://sourceware.org/ml/libc-alpha/2005-02/msg00042.html
 741         # But! Finally fixed in recent versions:
 742         # https://sourceware.org/ml/libc-alpha/2012-05/msg01865.html
 743         if ! version_is_at_least 2.16 ; then
 744                 echo 'int main(){}' > "${T}"/gcc_eh_test.c
 745                 if ! $(tc-getCC ${CTARGET}) ${CFLAGS} ${LDFLAGS} "${T}"/gcc_eh_test.c -lgcc_eh 2>/dev/null ; then
 746                         sed -i -e 's:-lgcc_eh::' Makeconfig || die "sed gcc_eh"
 747                 fi
 748         fi
 749
 750         cd "${WORKDIR}"
 751         find . -type f '(' -size 0 -o -name "*.orig" ')' -delete
 752         find . -name configure -exec touch {} +
 753
 754         eprefixify extra/locale/locale-gen
 755
 756         # Fix permissions on some of the scripts.
 757         chmod u+x "${S}"/scripts/*.sh
 758 }
 759 dump_toolchain_settings() {
 760         echo
 761
 762         einfo "$*"
 763
 764         local v
 765         for v in ABI CBUILD CHOST CTARGET CBUILD_OPT CTARGET_OPT CC LD {AS,C,CPP,CXX,LD}FLAGS ; do
 766                 einfo " $(printf '%15s' ${v}:)   ${!v}"
 767         done
 768
 769         # The glibc configure script doesn't properly use LDFLAGS all the time.
 770         export CC="$(tc-getCC ${CTARGET}) ${LDFLAGS}"
 771         einfo " $(printf '%15s' 'Manual CC:')   ${CC}"
 772         echo
 773 }
 774
 775 glibc_do_configure() {
 776         # Glibc does not work with gold (for various reasons) #269274.
 777         tc-ld-disable-gold
 778
 779         dump_toolchain_settings "Configuring glibc for $1"
 780
 781         local myconf=()
 782
 783         # set addons
 784         pushd "${S}" > /dev/null
 785         local addons=$(echo */configure | sed \
 786                 -e 's:/configure::g' \
 787                 -e 's:\(linuxthreads\|nptl\|rtkaio\|glibc-compat\)\( \|$\)::g' \
 788                 -e 's: \+$::' \
 789                 -e 's! !,!g' \
 790                 -e 's!^!,!' \
 791                 -e '/^,\*$/d')
 792         [[ -d ports ]] && addons+=",ports"
 793         popd > /dev/null
 794
 795         if has_version '<sys-libs/glibc-2.13' ; then
 796                 myconf+=( --enable-old-ssp-compat )
 797         fi
 798
 799         if version_is_at_least 2.25 ; then
 800                 case ${CTARGET} in
 801                         mips*)
 802                                 # dlopen() detects stack smash on mips n32 ABI.
 803                                 # Cause is unknown: https://bugs.gentoo.org/640130
 804                                 myconf+=( --enable-stack-protector=no )
 805                                 ;;
 806                         powerpc-*)
 807                                 # Currently gcc on powerpc32 generates invalid code for
 808                                 # __builtin_return_address(0) calls. Normally programs
 809                                 # don't do that but malloc hooks in glibc do:
 810                                 # https://gcc.gnu.org/PR81996
 811                                 # https://bugs.gentoo.org/629054
 812                                 myconf+=( --enable-stack-protector=no )
 813                                 ;;
 814                         *)
 815                                 myconf+=( --enable-stack-protector=all )
 816                                 ;;
 817                 esac
 818         fi
 819
 820         # Keep a whitelist of targets supporing IFUNC. glibc's ./configure
 821         # is not robust enough to detect proper support:
 822         #    https://bugs.gentoo.org/641216
 823         #    https://sourceware.org/PR22634#c0
 824         case $(tc-arch ${CTARGET}) in
 825                 # Keep whitelist of targets where autodetection mostly works.
 826                 amd64|x86|sparc|ppc|ppc64|arm|arm64|s390) ;;
 827                 # Blacklist everywhere else
 828                 *) myconf+=( libc_cv_ld_gnu_indirect_function=no ) ;;
 829         esac
 830
 831         if version_is_at_least 2.25 ; then
 832                 myconf+=( --enable-stackguard-randomization )
 833         else
 834                 myconf+=( $(use_enable hardened stackguard-randomization) )
 835         fi
 836
 837         [[ $(tc-is-softfloat) == "yes" ]] && myconf+=( --without-fp )
 838
 839         if [[ $1 == "linuxthreads" ]] ; then
 840                 if want_tls ; then
 841                         myconf+=( --with-tls )
 842
 843                         if ! want__thread || use glibc-compat20 || [[ ${LT_KER_VER} == 2.[02].* ]] ; then
 844                                 myconf+=( --without-__thread )
 845                         else
 846                                 myconf+=( --with-__thread )
 847                         fi
 848                 else
 849                         myconf+=( --without-tls --without-__thread )
 850                 fi
 851
 852                 myconf+=( --disable-sanity-checks )
 853                 addons="linuxthreads${addons}"
 854                 myconf+=( --enable-kernel=${LT_KER_VER} )
 855         elif [[ $1 == "nptl" ]] ; then
 856                 # Newer versions require nptl, so there is no addon for it.
 857                 version_is_at_least 2.20 || addons="nptl${addons}"
 858                 myconf+=( --enable-kernel=${NPTL_KERN_VER} )
 859         else
 860                 die "invalid pthread option"
 861         fi
 862         myconf+=( --enable-add-ons="${addons#,}" )
 863
 864         # Since SELinux support is only required for nscd, only enable it if:
 865         # 1. USE selinux
 866         # 2. only for the primary ABI on multilib systems
 867         # 3. Not a crosscompile
 868         if ! is_crosscompile && use selinux ; then
 869                 if use multilib ; then
 870                         if is_final_abi ; then
 871                                 myconf+=( --with-selinux )
 872                         else
 873                                 myconf+=( --without-selinux )
 874                         fi
 875                 else
 876                         myconf+=( --with-selinux )
 877                 fi
 878         else
 879                 myconf+=( --without-selinux )
 880         fi
 881
 882         # Force a few tests where we always know the answer but
 883         # configure is incapable of finding it.
 884         if is_crosscompile ; then
 885                 export \
 886                         libc_cv_c_cleanup=yes \
 887                         libc_cv_forced_unwind=yes
 888         fi
 889
 890         myconf+=(
 891                 --without-cvs
 892                 --disable-werror
 893                 --enable-bind-now
 894                 --build=${CBUILD_OPT:-${CBUILD}}
 895                 --host=${CTARGET_OPT:-${CTARGET}}
 896                 $(use_enable profile)
 897                 $(use_with gd)
 898                 --with-headers=$(alt_build_headers)
 899                 --prefix="${EPREFIX}/usr"
 900                 --sysconfdir="${EPREFIX}/etc"
 901                 --localstatedir="${EPREFIX}/var"
 902                 --libdir='$(prefix)'/$(get_libdir)
 903                 --mandir='$(prefix)'/share/man
 904                 --infodir='$(prefix)'/share/info
 905                 --libexecdir='$(libdir)'/misc/glibc
 906                 --with-bugurl=http://bugs.gentoo.org/
 907                 --with-pkgversion="$(glibc_banner)"
 908                 $(use_multiarch || echo --disable-multi-arch)
 909                 $(in_iuse rpc && use_enable rpc obsolete-rpc || echo --enable-obsolete-rpc)
 910                 $(in_iuse systemtap && use_enable systemtap)
 911                 $(in_iuse nscd && use_enable nscd)
 912                 ${EXTRA_ECONF}
 913         )
 914
 915         # We rely on sys-libs/timezone-data for timezone tools normally.
 916         if version_is_at_least 2.23 ; then
 917                 myconf+=( $(use_enable vanilla timezone-tools) )
 918         fi
 919
 920         # These libs don't have configure flags.
 921         ac_cv_lib_audit_audit_log_user_avc_message=$(in_iuse audit && usex audit || echo no)
 922         ac_cv_lib_cap_cap_init=$(in_iuse caps && usex caps || echo no)
 923
 924         # There is no configure option for this and we need to export it
 925         # since the glibc build will re-run configure on itself
 926         export libc_cv_rootsbindir="${EPREFIX}/sbin"
 927         export libc_cv_slibdir="${EPREFIX}/$(get_libdir)"
 928
 929         # We take care of patching our binutils to use both hash styles,
 930         # and many people like to force gnu hash style only, so disable
 931         # this overriding check.  #347761
 932         export libc_cv_hashstyle=no
 933
 934         # Overtime, generating info pages can be painful.  So disable this for
 935         # versions older than the latest stable to avoid the issue (this ver
 936         # should be updated from time to time).  #464394 #465816
 937         if ! version_is_at_least 2.17 ; then
 938                 export ac_cv_prog_MAKEINFO=:
 939         fi
 940
 941         local builddir=$(builddir "$1")
 942         mkdir -p "${builddir}"
 943         cd "${builddir}"
 944         set -- "${S}"/configure "${myconf[@]}"
 945         echo "$@"
 946         "$@" || die "failed to configure glibc"
 947
 948         # ia64 static cross-compilers are a pita in so much that they
 949         # can't produce static ELFs (as the libgcc.a is broken).  so
 950         # disable building of the programs for those targets if it
 951         # doesn't work.
 952         # XXX: We could turn this into a compiler test, but ia64 is
 953         # the only one that matters, so this should be fine for now.
 954         if is_crosscompile && [[ ${CTARGET} == ia64* ]] ; then
 955                 sed -i '1i+link-static = touch $@' config.make
 956         fi
 957
 958         # If we're trying to migrate between ABI sets, we need
 959         # to lie and use a local copy of gcc.  Like if the system
 960         # is built with MULTILIB_ABIS="amd64 x86" but we want to
 961         # add x32 to it, gcc/glibc don't yet support x32.
 962         if [[ -n ${GCC_BOOTSTRAP_VER} ]] && use multilib ; then
 963                 echo 'main(){}' > "${T}"/test.c
 964                 if ! $(tc-getCC ${CTARGET}) ${CFLAGS} ${LDFLAGS} "${T}"/test.c -Wl,-emain -lgcc 2>/dev/null ; then
 965                         sed -i -e '/^CC = /s:$: -B$(objdir)/../'"gcc-${GCC_BOOTSTRAP_VER}/${ABI}:" config.make || die
 966                         mkdir -p sunrpc
 967                         cp $(which rpcgen) sunrpc/cross-rpcgen || die
 968                         touch -t 202001010101 sunrpc/cross-rpcgen || die
 969                 fi
 970         fi
 971 }
 972
 973 toolchain-glibc_headers_configure() {
 974         export ABI=default
 975
 976         local builddir=$(builddir "headers")
 977         mkdir -p "${builddir}"
 978         cd "${builddir}"
 979
 980         # if we don't have a compiler yet, we can't really test it now ...
 981         # hopefully they don't affect header generation, so let's hope for
 982         # the best here ...
 983         local v vars=(
 984                 ac_cv_header_cpuid_h=yes
 985                 libc_cv_{386,390,alpha,arm,hppa,ia64,mips,{powerpc,sparc}{,32,64},sh,x86_64}_tls=yes
 986                 libc_cv_asm_cfi_directives=yes
 987                 libc_cv_broken_visibility_attribute=no
 988                 libc_cv_c_cleanup=yes
 989                 libc_cv_forced_unwind=yes
 990                 libc_cv_gcc___thread=yes
 991                 libc_cv_mlong_double_128=yes
 992                 libc_cv_mlong_double_128ibm=yes
 993                 libc_cv_ppc_machine=yes
 994                 libc_cv_ppc_rel16=yes
 995                 libc_cv_predef_fortify_source=no
 996                 libc_cv_visibility_attribute=yes
 997                 libc_cv_z_combreloc=yes
 998                 libc_cv_z_execstack=yes
 999                 libc_cv_z_initfirst=yes
1000                 libc_cv_z_nodelete=yes
1001                 libc_cv_z_nodlopen=yes
1002                 libc_cv_z_relro=yes
1003                 libc_mips_abi=${ABI}
1004                 libc_mips_float=$([[ $(tc-is-softfloat) == "yes" ]] && echo soft || echo hard)
1005                 # These libs don't have configure flags.
1006                 ac_cv_lib_audit_audit_log_user_avc_message=no
1007                 ac_cv_lib_cap_cap_init=no
1008         )
1009         if ! version_is_at_least 2.25 ; then
1010                 vars+=(
1011                         libc_cv_predef_stack_protector=no
1012                 )
1013         fi
1014         einfo "Forcing cached settings:"
1015         for v in "${vars[@]}" ; do
1016                 einfo " ${v}"
1017                 export ${v}
1018         done
1019
1020         # Blow away some random CC settings that screw things up. #550192
1021         if [[ -d ${S}/sysdeps/mips ]]; then
1022                 pushd "${S}"/sysdeps/mips >/dev/null
1023                 sed -i -e '/^CC +=/s:=.*:= -D_MIPS_SZPTR=32:' mips32/Makefile mips64/n32/Makefile || die
1024                 sed -i -e '/^CC +=/s:=.*:= -D_MIPS_SZPTR=64:' mips64/n64/Makefile || die
1025                 if version_is_at_least 2.21 ; then
1026                         # Force the mips ABI to the default.  This is OK because the set of
1027                         # installed headers in this phase is the same between the 3 ABIs.
1028                         # If this ever changes, this hack will break, but that's unlikely
1029                         # as glibc discourages that behavior.
1030                         # https://crbug.com/647033
1031                         sed -i -e 's:abiflag=.*:abiflag=_ABIO32:' preconfigure || die
1032                 fi
1033                 popd >/dev/null
1034         fi
1035
1036         local myconf=()
1037         myconf+=(
1038                 --disable-sanity-checks
1039                 --enable-hacker-mode
1040                 --without-cvs
1041                 --disable-werror
1042                 --enable-bind-now
1043                 --build=${CBUILD_OPT:-${CBUILD}}
1044                 --host=${CTARGET_OPT:-${CTARGET}}
1045                 --with-headers=$(alt_build_headers)
1046                 --prefix="${EPREFIX}/usr"
1047                 ${EXTRA_ECONF}
1048         )
1049
1050         local addons
1051         [[ -d ${S}/ports ]] && addons+=",ports"
1052         # Newer versions require nptl, so there is no addon for it.
1053         version_is_at_least 2.20 || addons+=",nptl"
1054         myconf+=( --enable-add-ons="${addons#,}" )
1055
1056         # Nothing is compiled here which would affect the headers for the target.
1057         # So forcing CC/CFLAGS is sane.
1058         set -- "${S}"/configure "${myconf[@]}"
1059         echo "$@"
1060         CC="$(tc-getBUILD_CC)" \
1061         CFLAGS="-O1 -pipe" \
1062         CPPFLAGS="-U_FORTIFY_SOURCE" \
1063         LDFLAGS="" \
1064         "$@" || die "failed to configure glibc"
1065 }
1066
1067 toolchain-glibc_do_src_configure() {
1068         if just_headers ; then
1069                 toolchain-glibc_headers_configure
1070         else
1071                 want_linuxthreads && glibc_do_configure linuxthreads
1072                 want_nptl && glibc_do_configure nptl
1073         fi
1074 }
1075
1076 toolchain-glibc_src_configure() {
1077         foreach_abi toolchain-glibc_do_src_configure
1078 }
1079
1080 toolchain-glibc_do_src_compile() {
1081         local t
1082         for t in linuxthreads nptl ; do
1083                 if want_${t} ; then
1084                         [[ ${EAPI:-0} == [01] ]] && glibc_do_configure ${t}
1085                         emake -C "$(builddir ${t})" || die "make ${t} for ${ABI} failed"
1086                 fi
1087         done
1088 }
1089
1090 toolchain-glibc_src_compile() {
1091         if just_headers ; then
1092                 [[ ${EAPI:-0} == [01] ]] && toolchain-glibc_headers_configure
1093                 return
1094         fi
1095
1096         foreach_abi toolchain-glibc_do_src_compile
1097 }
1098
1099 glibc_src_test() {
1100         cd "$(builddir $1)"
1101         nonfatal emake -j1 check && return 0
1102         einfo "make check failed - re-running with --keep-going to get the rest of the results"
1103         nonfatal emake -j1 -k check
1104         ewarn "make check failed for ${ABI}-${CTARGET}-$1"
1105         return 1
1106 }
1107
1108 toolchain-glibc_do_src_test() {
1109         local ret=0 t
1110         for t in linuxthreads nptl ; do
1111                 if want_${t} ; then
1112                         glibc_src_test ${t}
1113                         : $(( ret |= $? ))
1114                 fi
1115         done
1116         return ${ret}
1117 }
1118
1119 toolchain-glibc_src_test() {
1120         # Give tests more time to complete.
1121         export TIMEOUTFACTOR=5
1122
1123         foreach_abi toolchain-glibc_do_src_test || die "tests failed"
1124 }
1125
1126 toolchain-glibc_do_src_install() {
1127         local builddir=$(builddir $(want_linuxthreads && echo linuxthreads || echo nptl))
1128         cd "${builddir}"
1129
1130         emake install_root="${D}$(alt_prefix)" install || die
1131
1132         if want_linuxthreads && want_nptl ; then
1133                 einfo "Installing NPTL to $(alt_libdir)/tls/..."
1134                 cd "$(builddir nptl)"
1135                 dodir $(alt_libdir)/tls $(alt_usrlibdir)/nptl
1136
1137                 local l src_lib
1138                 for l in libc libm librt libpthread libthread_db ; do
1139                         # take care of shared lib first ...
1140                         l=${l}.so
1141                         if [[ -e ${l} ]] ; then
1142                                 src_lib=${l}
1143                         else
1144                                 src_lib=$(eval echo */${l})
1145                         fi
1146                         cp -a ${src_lib} "${ED}"$(alt_libdir)/tls/${l} || die "copying nptl ${l}"
1147                         fperms a+rx $(alt_libdir)/tls/${l}
1148                         dosym ${l} $(alt_libdir)/tls/$(scanelf -qSF'%S#F' ${src_lib})
1149
1150                         # then grab the linker script or the symlink ...
1151                         if [[ -L ${ED}$(alt_usrlibdir)/${l} ]] ; then
1152                                 dosym $(alt_libdir)/tls/${l} $(alt_usrlibdir)/nptl/${l}
1153                         else
1154                                 sed \
1155                                         -e "s:/${l}:/tls/${l}:g" \
1156                                         -e "s:/${l/%.so/_nonshared.a}:/nptl/${l/%.so/_nonshared.a}:g" \
1157                                         "${ED}"$(alt_usrlibdir)/${l} > "${ED}"$(alt_usrlibdir)/nptl/${l}
1158                         fi
1159
1160                         # then grab the static lib ...
1161                         src_lib=${src_lib/%.so/.a}
1162                         [[ ! -e ${src_lib} ]] && src_lib=${src_lib/%.a/_pic.a}
1163                         cp -a ${src_lib} "${ED}"$(alt_usrlibdir)/nptl/ || die "copying nptl ${src_lib}"
1164                         src_lib=${src_lib/%.a/_nonshared.a}
1165                         if [[ -e ${src_lib} ]] ; then
1166                                 cp -a ${src_lib} "${ED}"$(alt_usrlibdir)/nptl/ || die "copying nptl ${src_lib}"
1167                         fi
1168                 done
1169
1170                 # use the nptl linker instead of the linuxthreads one as the linuxthreads
1171                 # one may lack TLS support and that can be really bad for business
1172                 cp -a elf/ld.so "${ED}"$(alt_libdir)/$(scanelf -qSF'%S#F' elf/ld.so) || die "copying nptl interp"
1173         fi
1174
1175         # Normally real_pv is ${PV}. Live ebuilds are exception, there we need
1176         # to infer upstream version:
1177         # '#define VERSION "2.26.90"' -> '2.26.90'
1178         local upstream_pv=$(sed -n -r 's/#define VERSION "(.*)"/\1/p' "${S}"/version.h)
1179         # Newer versions get fancy with libm linkage to include vectorized support.
1180         # While we don't really need a ldscript here, portage QA checks get upset.
1181         if [[ -e ${ED}$(alt_usrlibdir)/libm-${upstream_pv}.a ]] ; then
1182                 dosym ../../$(get_libdir)/libm-${upstream_pv}.so $(alt_usrlibdir)/libm-${upstream_pv}.so
1183         fi
1184
1185         # We'll take care of the cache ourselves
1186         rm -f "${ED}"/etc/ld.so.cache
1187
1188         # Everything past this point just needs to be done once ...
1189         is_final_abi || return 0
1190
1191         # Make sure the non-native interp can be found on multilib systems even
1192         # if the main library set isn't installed into the right place.  Maybe
1193         # we should query the active gcc for info instead of hardcoding it ?
1194         local i ldso_abi ldso_name
1195         local ldso_abi_list=(
1196                 # x86
1197                 amd64   /lib64/ld-linux-x86-64.so.2
1198                 x32     /libx32/ld-linux-x32.so.2
1199                 x86     /lib/ld-linux.so.2
1200                 # mips
1201                 o32     /lib/ld.so.1
1202                 n32     /lib32/ld.so.1
1203                 n64     /lib64/ld.so.1
1204                 # powerpc
1205                 ppc     /lib/ld.so.1
1206                 ppc64   /lib64/ld64.so.1
1207                 # s390
1208                 s390    /lib/ld.so.1
1209                 s390x   /lib/ld64.so.1
1210                 # sparc
1211                 sparc32 /lib/ld-linux.so.2
1212                 sparc64 /lib64/ld-linux.so.2
1213         )
1214         case $(tc-endian) in
1215         little)
1216                 ldso_abi_list+=(
1217                         # arm
1218                         arm64   /lib/ld-linux-aarch64.so.1
1219                 )
1220                 ;;
1221         big)
1222                 ldso_abi_list+=(
1223                         # arm
1224                         arm64   /lib/ld-linux-aarch64_be.so.1
1225                 )
1226                 ;;
1227         esac
1228         if [[ ${SYMLINK_LIB} == "yes" ]] && [[ ! -e ${ED}/$(alt_prefix)/lib ]] ; then
1229                 dosym $(get_abi_LIBDIR ${DEFAULT_ABI}) $(alt_prefix)/lib
1230         fi
1231         for (( i = 0; i < ${#ldso_abi_list[@]}; i += 2 )) ; do
1232                 ldso_abi=${ldso_abi_list[i]}
1233                 has ${ldso_abi} $(get_install_abis) || continue
1234
1235                 ldso_name="$(alt_prefix)${ldso_abi_list[i+1]}"
1236                 if [[ ! -L ${ED}/${ldso_name} && ! -e ${ED}/${ldso_name} ]] ; then
1237                         dosym ../$(get_abi_LIBDIR ${ldso_abi})/${ldso_name##*/} ${ldso_name}
1238                 fi
1239         done
1240
1241         # With devpts under Linux mounted properly, we do not need the pt_chown
1242         # binary to be setuid.  This is because the default owners/perms will be
1243         # exactly what we want.
1244         if in_iuse suid && ! use suid ; then
1245                 find "${ED}" -name pt_chown -exec chmod -s {} +
1246         fi
1247
1248         #################################################################
1249         # EVERYTHING AFTER THIS POINT IS FOR NATIVE GLIBC INSTALLS ONLY #
1250         # Make sure we install some symlink hacks so that when we build
1251         # a 2nd stage cross-compiler, gcc finds the target system
1252         # headers correctly.  See gcc/doc/gccinstall.info
1253         if is_crosscompile ; then
1254                 # We need to make sure that /lib and /usr/lib always exists.
1255                 # gcc likes to use relative paths to get to its multilibs like
1256                 # /usr/lib/../lib64/.  So while we don't install any files into
1257                 # /usr/lib/, we do need it to exist.
1258                 cd "${ED}"$(alt_libdir)/..
1259                 [[ -e lib ]] || mkdir lib
1260                 cd "${ED}"$(alt_usrlibdir)/..
1261                 [[ -e lib ]] || mkdir lib
1262
1263                 dosym usr/include $(alt_prefix)/sys-include
1264                 return 0
1265         fi
1266
1267         # Files for Debian-style locale updating
1268         dodir /usr/share/i18n
1269         sed \
1270                 -e "/^#/d" \
1271                 -e "/SUPPORTED-LOCALES=/d" \
1272                 -e "s: \\\\::g" -e "s:/: :g" \
1273                 "${S}"/localedata/SUPPORTED > "${ED}"/usr/share/i18n/SUPPORTED \
1274                 || die "generating /usr/share/i18n/SUPPORTED failed"
1275         cd "${WORKDIR}"/extra/locale
1276         dosbin locale-gen || die
1277         doman *.[0-8]
1278         insinto /etc
1279         doins locale.gen || die
1280
1281         # Make sure all the ABI's can find the locales and so we only
1282         # have to generate one set
1283         local a
1284         keepdir /usr/$(get_libdir)/locale
1285         for a in $(get_install_abis) ; do
1286                 if [[ ! -e ${ED}/usr/$(get_abi_LIBDIR ${a})/locale ]] ; then
1287                         dosym /usr/$(get_libdir)/locale /usr/$(get_abi_LIBDIR ${a})/locale
1288                 fi
1289         done
1290
1291         cd "${S}"
1292
1293         # Install misc network config files
1294         insinto /etc
1295         doins nscd/nscd.conf posix/gai.conf nss/nsswitch.conf || die
1296         doins "${WORKDIR}"/extra/etc/*.conf || die
1297
1298         if ! in_iuse nscd || use nscd ; then
1299                 doinitd "$(prefixify_ro "${WORKDIR}"/extra/etc/nscd)" || die
1300
1301                 local nscd_args=(
1302                         -e "s:@PIDFILE@:$(strings "${ED}"/usr/sbin/nscd | grep nscd.pid):"
1303                 )
1304                 version_is_at_least 2.16 || nscd_args+=( -e 's: --foreground : :' )
1305                 sed -i "${nscd_args[@]}" "${ED}"/etc/init.d/nscd
1306
1307                 # Newer versions of glibc include the nscd.service themselves.
1308                 # TODO: Drop the $FILESDIR copy once 2.19 goes stable.
1309                 if version_is_at_least 2.19 ; then
1310                         systemd_dounit nscd/nscd.service || die
1311                         systemd_newtmpfilesd nscd/nscd.tmpfiles nscd.conf || die
1312                 else
1313                         systemd_dounit "${FILESDIR}"/nscd.service || die
1314                         systemd_newtmpfilesd "${FILESDIR}"/nscd.tmpfilesd nscd.conf || die
1315                 fi
1316         else
1317                 # Do this since extra/etc/*.conf above might have nscd.conf.
1318                 rm -f "${ED}"/etc/nscd.conf
1319         fi
1320
1321         echo 'LDPATH="include ld.so.conf.d/*.conf"' > "${T}"/00glibc
1322         doenvd "${T}"/00glibc || die
1323
1324         for d in BUGS ChangeLog* CONFORMANCE FAQ NEWS NOTES PROJECTS README* ; do
1325                 [[ -s ${d} ]] && dodoc ${d}
1326         done
1327
1328         # Prevent overwriting of the /etc/localtime symlink.  We'll handle the
1329         # creation of the "factory" symlink in pkg_postinst().
1330         rm -f "${ED}"/etc/localtime
1331 }
1332
1333 toolchain-glibc_headers_install() {
1334         local builddir=$(builddir "headers")
1335         cd "${builddir}"
1336         emake install_root="${D}$(alt_prefix)" install-headers || die
1337         if ! version_is_at_least 2.16 ; then
1338                 insinto $(alt_headers)/bits
1339                 doins bits/stdio_lim.h || die
1340         fi
1341         insinto $(alt_headers)/gnu
1342         doins "${S}"/include/gnu/stubs.h || die "doins include gnu"
1343         # Make sure we install the sys-include symlink so that when
1344         # we build a 2nd stage cross-compiler, gcc finds the target
1345         # system headers correctly.  See gcc/doc/gccinstall.info
1346         dosym usr/include $(alt_prefix)/sys-include
1347 }
1348
1349 src_strip() {
1350         # gdb is lame and requires some debugging information to remain in
1351         # libpthread, so we need to strip it by hand.  libthread_db makes no
1352         # sense stripped as it is only used when debugging.
1353         local pthread=$(has splitdebug ${FEATURES} && echo "libthread_db" || echo "lib{pthread,thread_db}")
1354         env \
1355                 -uRESTRICT \
1356                 CHOST=${CTARGET} \
1357                 STRIP_MASK="/*/{,tls/}${pthread}*" \
1358                 prepallstrip
1359         # if user has stripping enabled and does not have split debug turned on,
1360         # then leave the debugging sections in libpthread.
1361         if ! has nostrip ${FEATURES} && ! has splitdebug ${FEATURES} ; then
1362                 ${STRIP:-${CTARGET}-strip} --strip-debug "${ED}"/*/libpthread-*.so
1363         fi
1364 }
1365
1366 toolchain-glibc_src_install() {
1367         if just_headers ; then
1368                 export ABI=default
1369                 toolchain-glibc_headers_install
1370                 return
1371         fi
1372
1373         foreach_abi toolchain-glibc_do_src_install
1374         src_strip
1375 }
1376
1377 # Simple test to make sure our new glibc isn't completely broken.
1378 # Make sure we don't test with statically built binaries since
1379 # they will fail.  Also, skip if this glibc is a cross compiler.
1380 #
1381 # If coreutils is built with USE=multicall, some of these files
1382 # will just be wrapper scripts, not actual ELFs we can test.
1383 glibc_sanity_check() {
1384         cd / #228809
1385
1386         # We enter ${ED} so to avoid trouble if the path contains
1387         # special characters; for instance if the path contains the
1388         # colon character (:), then the linker will try to split it
1389         # and look for the libraries in an unexpected place. This can
1390         # lead to unsafe code execution if the generated prefix is
1391         # within a world-writable directory.
1392         # (e.g. /var/tmp/portage:${HOSTNAME})
1393         pushd "${ED}"/$(get_libdir) >/dev/null
1394
1395         local x striptest
1396         for x in cal date env free ls true uname uptime ; do
1397                 x=$(type -p ${x})
1398                 [[ -z ${x} || ${x} != ${EPREFIX}/* ]] && continue
1399                 striptest=$(LC_ALL="C" file -L ${x} 2>/dev/null) || continue
1400                 case ${striptest} in
1401                 *"statically linked"*) continue;;
1402                 *"ASCII text"*) continue;;
1403                 esac
1404                 # We need to clear the locale settings as the upgrade might want
1405                 # incompatible locale data.  This test is not for verifying that.
1406                 LC_ALL=C \
1407                 ./ld-*.so --library-path . ${x} > /dev/null \
1408                         || die "simple run test (${x}) failed"
1409         done
1410
1411         popd >/dev/null
1412 }
1413
1414 toolchain-glibc_pkg_preinst() {
1415         # nothing to do if just installing headers
1416         just_headers && return
1417
1418         # prepare /etc/ld.so.conf.d/ for files
1419         mkdir -p "${EROOT}"/etc/ld.so.conf.d
1420
1421         # Default /etc/hosts.conf:multi to on for systems with small dbs.
1422         if [[ $(wc -l < "${EROOT}"/etc/hosts) -lt 1000 ]] ; then
1423                 sed -i '/^multi off/s:off:on:' "${ED}"/etc/host.conf
1424                 elog "Defaulting /etc/host.conf:multi to on"
1425         fi
1426
1427         [[ ${ROOT} != "/" ]] && return 0
1428         [[ -d ${ED}/$(get_libdir) ]] || return 0
1429         [[ -z ${BOOTSTRAP_RAP} ]] && glibc_sanity_check
1430
1431         # For newer EAPIs, this was run in pkg_pretend.
1432         if [[ ${EAPI:-0} == [0123] ]] ; then
1433                 check_devpts
1434         fi
1435 }
1436
1437 toolchain-glibc_pkg_postinst() {
1438         # nothing to do if just installing headers
1439         just_headers && return
1440
1441         if ! tc-is-cross-compiler && [[ -x ${EROOT}/usr/sbin/iconvconfig ]] ; then
1442                 # Generate fastloading iconv module configuration file.
1443                 "${EROOT}"/usr/sbin/iconvconfig --prefix="${ROOT}"
1444         fi
1445
1446         if ! is_crosscompile && [[ ${ROOT} == "/" ]] ; then
1447                 # Reload init ... if in a chroot or a diff init package, ignore
1448                 # errors from this step #253697
1449                 /sbin/telinit U 2>/dev/null
1450
1451                 # if the host locales.gen contains no entries, we'll install everything
1452                 local locale_list="${EROOT}etc/locale.gen"
1453                 if [[ -z $(locale-gen --list --config "${locale_list}") ]] ; then
1454                         ewarn "Generating all locales; edit /etc/locale.gen to save time/space"
1455                         locale_list="${EROOT}usr/share/i18n/SUPPORTED"
1456                 fi
1457                 locale-gen -j $(makeopts_jobs) --config "${locale_list}"
1458         fi
1459 }
1460
1461 _TOOLCHAIN_GLIBC_ECLASS=1
1462 fi