# Maintainer: Giancarlo Razzolini <grazzolini@archlinux.org>
# Maintainer: Frederik Schwan <freswa at archlinux dot org>
# Contributor: Bartłomiej Piotrowski <bpiotrowski@archlinux.org>
# Contributor: Allan McRae <allan@archlinux.org>

# toolchain build order: linux-api-headers->glibc->binutils->gcc->glibc->binutils->gcc
# NOTE: valgrind requires rebuilt with each major glibc version

pkgbase=glibc
pkgname=(glibc glibc-locales)
pkgver=2.39
_commit=31da30f23cddd36db29d5b6a1c7619361b271fb4
pkgrel=2.1
url='https://www.gnu.org/software/libc'
license=(GPL-2.0-or-later LGPL-2.1-or-later)
ncxfab_makedepends=(base-devel git python) #
ncxfat_makedepends=(binutils linux-api-headers) #  lib32-gcc-libs gd
cat_makedepends=(mingcc mingcc-libs minglibc)
xat_makedepends=(gcc gcc-libs)
options=(staticlibs !lto)
source=(git+https://sourceware.org/git/glibc.git#commit=${_commit}
        locale.gen.txt
        locale-gen
        lib32-glibc.conf
        sdt.h sdt-config.h
        0001-Hide-aarch64-SIMD-definitions-from-other-targets.patch
)
validpgpkeys=(7273542B39962DF7B299931416792B4EA25340F8 # Carlos O'Donell
              BC7C7372637EC10C57D7AA6579C43DFBF1CF2187) # Siddhesh Poyarekar
b2sums=(SKIP
        'c859bf2dfd361754c9e3bbd89f10de31f8e81fd95dc67b77d10cb44e23834b096ba3caa65fbc1bd655a8696c6450dfd5a096c476b3abf5c7e125123f97ae1a72'
        '04fbb3b0b28705f41ccc6c15ed5532faf0105370f22133a2b49867e790df0491f5a1255220ff6ebab91a462f088d0cf299491b3eb8ea53534cb8638a213e46e3'
        '7c265e6d36a5c0dff127093580827d15519b6c7205c2e1300e82f0fb5b9dd00b6accb40c56581f18179c4fbbc95bd2bf1b900ace867a83accde0969f7b609f8a'
        'a6a5e2f2a627cc0d13d11a82458cfd0aa75ec1c5a3c7647e5d5a3bb1d4c0770887a3909bfda1236803d5bc9801bfd6251e13483e9adf797e4725332cd0d91a0e'
        '214e995e84b342fe7b2a7704ce011b7c7fc74c2971f98eeb3b4e677b99c860addc0a7d91b8dc0f0b8be7537782ee331999e02ba48f4ccc1c331b60f27d715678'
        SKIP)

prepare() {
  mkdir -p glibc-build lib32-glibc-build glibc-native-build

  [[ -d glibc-$pkgver ]] && ln -s glibc-$pkgver glibc
  cd glibc

  patch -Np1 < ../0001-Hide-aarch64-SIMD-definitions-from-other-targets.patch

}

build() {
  local _configure_flags=(
      --enable-bind-now
      --enable-fortify-source
      --enable-kernel=4.4
      --enable-multi-arch
      --enable-stack-protector=strong
      --enable-systemtap
      --disable-nscd
      --disable-profile
      --disable-werror
      --disable-systemtap
  )

  (
    cd glibc-build

    local _extra_conf_flags=()
    if [[ x"$MPKG_USRPATH" != x"/usr" ]]; then
        # In this case we will run inside a sysrooted system so we
        # need lib and include paths to be relative to the sysroot
        _extra_conf_flags+=(
            --libdir=/lib
            --libexecdir=/lib
            --includedir=/include
        )
        echo "slibdir=/lib" >> configparms
        echo "rtlddir=/lib" >> configparms
        echo "bindir=$MPKG_USRPATH/bin" >> configparms
        echo "sbindir=$MPKG_USRPATH/bin" >> configparms
        echo "rootsbindir=$MPKG_USRPATH/bin" >> configparms
    else
        _extra_conf_flags+=(
            --libdir=/usr/lib
            --libexecdir=/usr/lib
        )
        echo "slibdir=/usr/lib" >> configparms
        echo "rtlddir=/usr/lib" >> configparms
        echo "bindir=/usr/bin" >> configparms
        echo "sbindir=/usr/bin" >> configparms
        echo "rootsbindir=/usr/bin" >> configparms
    fi

    # Credits @allanmcrae
    # https://github.com/allanmcrae/toolchain/blob/f18604d70c5933c31b51a320978711e4e6791cf1/glibc/PKGBUILD
    # remove fortify for building libraries
    CFLAGS=${CFLAGS/-Wp,-D_FORTIFY_SOURCE=3/}
    CFLAGS=${CFLAGS/-fno-plt/}

    "${srcdir}"/glibc/configure \
        --prefix=$MPKG_USRPATH \
        --host=$MPKG_TARGETMACHINE \
        --build=$MPKG_BUILDMACHINE \
        --with-headers=$MPKG_BUILDSYSROOT/include \
        --enable-cet \
        "${_configure_flags[@]}" \
        "${_extra_conf_flags[@]}"

    make -j$(nproc) -O

    # build info pages manually for reproducibility
    make info
  )

  if ! (( MPKG_CROSSCOMPILED )); then
    rmdir glibc-native-build
    ln -s glibc-build glibc-native-build
  else
    (
      cd glibc-native-build

      echo "slibdir=$MPKG_USRPATH/lib" >> configparms
      echo "rtlddir=$MPKG_USRPATH/lib" >> configparms
      echo "sbindir=$MPKG_USRPATH/bin" >> configparms
      echo "rootsbindir=$MPKG_USRPATH/bin" >> configparms

      # Credits @allanmcrae
      # https://github.com/allanmcrae/toolchain/blob/f18604d70c5933c31b51a320978711e4e6791cf1/glibc/PKGBUILD
      # remove fortify for building libraries
      # CFLAGS=${CFLAGS/-Wp,-D_FORTIFY_SOURCE=2/}

      "${srcdir}"/glibc/configure \
                 --prefix=$MPKG_USRPATH \
                 --enable-cet \
                 "${_configure_flags[@]}"

      make -j$(nproc) -O -p 2>&1 > log

    )
  fi

  # pregenerate locales here instead of in package
  # functions because localedef does not like fakeroot
  make -C "${srcdir}"/glibc/localedata objdir="${srcdir}"/glibc-native-build \
    DESTDIR="${srcdir}"/locales install-locale-files
}

# Credits for _skip_test() and check() @allanmcrae
# https://github.com/allanmcrae/toolchain/blob/f18604d70c5933c31b51a320978711e4e6791cf1/glibc/PKGBUILD
_skip_test() {
  test=${1}
  file=${2}
  sed -i "/\b${test} /d" "${srcdir}"/glibc/${file}
}

check() (
  cd glibc-build

  # adjust/remove buildflags that cause false-positive testsuite failures
  sed -i '/FORTIFY/d' configparms                                     # failure to build testsuite
  sed -i 's/-Werror=format-security/-Wformat-security/' config.make   # failure to build testsuite
  sed -i '/CFLAGS/s/-fno-plt//' config.make                           # 16 failures
  sed -i '/CFLAGS/s/-fexceptions//' config.make                       # 1 failure
  LDFLAGS=${LDFLAGS/-Wl,-z,now/}                                         # 10 failures

  # The following tests fail due to restrictions in the Arch build system
  # The correct fix is to add the following to the systemd-nspawn call:
  # --system-call-filter="@clock @memlock @pkey"
  _skip_test test-errno-linux        sysdeps/unix/sysv/linux/Makefile
  _skip_test tst-mlock2              sysdeps/unix/sysv/linux/Makefile
  _skip_test tst-ntp_gettime         sysdeps/unix/sysv/linux/Makefile
  _skip_test tst-ntp_gettimex        sysdeps/unix/sysv/linux/Makefile
  _skip_test tst-pkey                sysdeps/unix/sysv/linux/Makefile
  _skip_test tst-process_mrelease    sysdeps/unix/sysv/linux/Makefile
  _skip_test tst-shstk-legacy-1g     sysdeps/x86_64/Makefile
  _skip_test tst-adjtime             time/Makefile

  make -O check
)

package_glibc() {
  pkgdesc='GNU C Library'
  ncxfah_depends=(tzdata filesystem)
  ncxfat_depends=('linux-api-headers>=4.10')
  ncxfah_optdepends=('gd: for memusagestat'
                     'perl: for mtrace')
  #provides=("minglibc=$pkgver")
  install=glibc.install
  backup=($MPKG_BACKUPETCPATH/gai.conf
          $MPKG_BACKUPETCPATH/locale.gen)

  make -C glibc-build DESTDIR="${pkgdir}" install


  if [[ x"$MPKG_USRPATH" != x"/usr" ]]; then
      mv "${pkgdir}"/{lib,include} "${pkgdir}"$MPKG_USRPATH/
  fi

  rm -f "${pkgdir}"$MPKG_ETCPATH/ld.so.cache

  # Shipped in tzdata
  rm -f "${pkgdir}"$MPKG_USRPATH/bin/{tzselect,zdump,zic}

  cd glibc

  install -dm755 "${pkgdir}"$MPKG_USRPATH/lib/{locale,systemd/system,tmpfiles.d}

  install -m644 posix/gai.conf "${pkgdir}"$MPKG_ETCPATH/gai.conf

  install -m755 "${srcdir}"/locale-gen "${pkgdir}"$MPKG_USRPATH/bin

  # Create /etc/locale.gen
  install -m644 "${srcdir}"/locale.gen.txt "${pkgdir}"$MPKG_ETCPATH/locale.gen
  sed -e '1,3d' -e 's|/| |g' -e 's|\\| |g' -e 's|^|#|g' \
    localedata/SUPPORTED >> "${pkgdir}"$MPKG_ETCPATH/locale.gen

  # Add SUPPORTED file to pkg
  sed -e '1,3d' -e 's|/| |g' -e 's| \\||g' \
    localedata/SUPPORTED > "${pkgdir}"$MPKG_USRPATH/share/i18n/SUPPORTED

  # install C.UTF-8 so that it is always available
  # should be built into glibc eventually
  # https://sourceware.org/glibc/wiki/Proposals/C.UTF-8
  # https://bugs.archlinux.org/task/74864
  install -dm755 "${pkgdir}"$MPKG_USRPATH/lib/locale
  cp -r "${srcdir}"/locales$MPKG_USRPATH/lib/locale/C.utf8 -t "${pkgdir}"$MPKG_USRPATH/lib/locale
  sed -i '/#C\.UTF-8 /d' "${pkgdir}"$MPKG_ETCPATH/locale.gen

  # Provide tracing probes to libstdc++ for exceptions, possibly for other
  # libraries too. Useful for gdb's catch command.
  install -Dm644 "${srcdir}"/sdt.h "${pkgdir}"$MPKG_USRPATH/include/sys/sdt.h
  install -Dm644 "${srcdir}"/sdt-config.h "${pkgdir}"$MPKG_USRPATH/include/sys/sdt-config.h
}

package_glibc-locales() {
  pkgdesc='Pregenerated locales for GNU C Library'
  ncxfat_depends=("glibc=$pkgver")

  cp -r locales/* -t "${pkgdir}"
  rm -r "${pkgdir}"$MPKG_USRPATH/lib/locale/C.utf8

  # deduplicate locale data
  hardlink -c "${pkgdir}"$MPKG_USRPATH/lib/locale
}
