#!/usr/bin/bash
# JOBoRun		: Jwm OpenBox Obarun RUNit
# Maintainer	: Joe Bo Run <joborun@disroot.org>
# PkgSource		: url="https://gittea.disroot.org/joborun-pkg/jobcore/$pkgname"
# Website		: https://pozol.eu
#-----------------------------------------| DESCRIPTION |---------------------------------------

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

pkgbase=glibc
pkgname=(glibc lib32-glibc)
pkgver=2.36
_commit=2bd815d8347851212b9a91dbdca8053f4dbdac87
pkgrel=06
arch=(x86_64)
url='https://www.gnu.org/software/libc'
makedepends=(git gd lib32-gcc-libs python)
#optdepends=('perl: for mtrace')
#options=(debug staticlibs !lto)
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
#         disable-clone3.diff
         reenable_DT_HASH.patch
)

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

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

  # re-enable `--hash-style=both` for building shared objects due to issues with EPIC's EAC
  # which relies on DT_HASH to be present in these libs.
  # reconsider 2023-01
  patch -Np1 -i "${srcdir}"/reenable_DT_HASH.patch
}

build() {
  local _configure_flags=(
      --prefix=/usr
      --with-headers=/usr/include
      --with-bugurl=https://bugs.archlinux.org/
      --enable-bind-now
      --enable-cet
      --enable-kernel=4.4
      --enable-multi-arch
      --enable-stack-protector=strong
      --enable-systemtap
      --disable-crypt
      --disable-profile
      --disable-werror
  )

  cd "$srcdir/glibc-build"

  echo "slibdir=/usr/lib" >> configparms
  echo "rtlddir=/usr/lib" >> configparms
  echo "sbindir=/usr/bin" >> configparms
  echo "rootsbindir=/usr/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/}

  "$srcdir/glibc/configure" \
      --libdir=/usr/lib \
      --libexecdir=/usr/lib \
      "${_configure_flags[@]}"

  # build libraries with fortify disabled
  echo "build-programs=no" >> configparms
  make -O

  # re-enable fortify for programs
  sed -i "/build-programs=/s#no#yes#" configparms
  echo "CFLAGS += -Wp,-D_FORTIFY_SOURCE=2" >> configparms
  make -O

  # build info pages manually for reproducibility
  make info

  cd "$srcdir/lib32-glibc-build"
  export CC="gcc -m32 -mstackrealign"
  export CXX="g++ -m32 -mstackrealign"

  echo "slibdir=/usr/lib32" >> configparms
  echo "rtlddir=/usr/lib32" >> configparms
  echo "sbindir=/usr/bin" >> configparms
  echo "rootsbindir=/usr/bin" >> configparms

  "$srcdir/glibc/configure" \
      --host=i686-pc-linux-gnu \
      --libdir=/usr/lib32 \
      --libexecdir=/usr/lib32 \
      "${_configure_flags[@]}"

  # build libraries with fortify disabled
  echo "build-programs=no" >> configparms
  make -O

  # re-enable fortify for programs
  sed -i "/build-programs=/s#no#yes#" configparms
  echo "CFLAGS += -Wp,-D_FORTIFY_SOURCE=2" >> configparms
  make -O

  # pregenerate C.UTF-8 locale until it is built into glibc
  # (https://sourceware.org/glibc/wiki/Proposals/C.UTF-8, FS#74864)-
  elf/ld.so --library-path "$PWD" locale/localedef -c -f ../glibc/localedata/charmaps/UTF-8 -i ../glibc/localedata/locales/C ../C.UTF-8/
}

# Credits for skip_test() and check() @allanmcrae
# https://github.com/allanmcrae/toolchain/blob/f18604d70c5933c31b51a320978711e4e6791cf1/glibc/PKGBUILD
#skip_test() {
#  test=${1}
#  file=${2}
#  sed -i "s/\b${test}\b//" "${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/,-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-adjtime             time/Makefile
#  skip_test tst-clock2              time/Makefile
#
#  make -O check
#}
#

package_glibc() {
  pkgdesc='GNU C Library w/o systemd'
  depends=('linux-api-headers>=5.10' tzdata filesystem)
  optdepends=('gd: for memusagestat'
              'perl: for mtrace')
  install=glibc.install
  backup=(etc/gai.conf
          etc/locale.gen
          etc/nscd.conf)

  make -C glibc-build install_root="$pkgdir" install
  rm -f "$pkgdir"/etc/ld.so.cache

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

  cd glibc

  install -dm755 "$pkgdir"/usr/lib/{locale,tmpfiles.d}
  install -m644 nscd/nscd.conf "$pkgdir/etc/nscd.conf"
  install -m644 nscd/nscd.tmpfiles "$pkgdir/usr/lib/tmpfiles.d/nscd.conf"
  install -dm755 "$pkgdir/var/db/nscd"

  install -m644 posix/gai.conf "$pkgdir"/etc/gai.conf

  install -m755 "$srcdir/locale-gen" "$pkgdir/usr/bin"

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

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

  # install C.UTF-8 so that it is always available
  install -dm755 "$pkgdir/usr/lib/locale"
  cp -r "$srcdir/C.UTF-8" -t "$pkgdir/usr/lib/locale"
  sed -i '/#C\.UTF-8 /d' "$pkgdir/etc/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/usr/include/sys/sdt.h"
  install -Dm644 "$srcdir/sdt-config.h" "$pkgdir/usr/include/sys/sdt-config.h"
}

package_lib32-glibc() {
  pkgdesc='GNU C Library (32-bit) w/o systemd'
  depends=("glibc=$pkgver")
  options+=('!emptydirs')

  cd lib32-glibc-build

  make install_root="$pkgdir" install
  rm -rf "$pkgdir"/{etc,sbin,usr/{bin,sbin,share},var}

  # We need to keep 32 bit specific header files
  find "$pkgdir/usr/include" -type f -not -name '*-32.h' -delete

  # Dynamic linker
  install -d "$pkgdir/usr/lib"
  ln -s ../lib32/ld-linux.so.2 "$pkgdir/usr/lib/"

  # Add lib32 paths to the default library search path
  install -Dm644 "$srcdir/lib32-glibc.conf" "$pkgdir/etc/ld.so.conf.d/lib32-glibc.conf"

  # Symlink /usr/lib32/locale to /usr/lib/locale
  ln -s ../lib/locale "$pkgdir/usr/lib32/locale"
}

#---- license gpg-key sha256sums ----

license=(GPL LGPL)

validpgpkeys=(7273542B39962DF7B299931416792B4EA25340F8 # Carlos O'Donell
              BC7C7372637EC10C57D7AA6579C43DFBF1CF2187) # Siddhesh Poyarekar

sha256sums=(SKIP
	2a7dd6c906b6c54a68f48a21898664a32fdb136cbd9ff7bfd48f01d1aaa649ae # locale.gen.txt
	8c5cc09018cbd65e8570430f872e118caa2644e311d6200b7d5f0cba837fbba4 # locale-gen
	c27424154a6096ae32c0824b785e05de6acef33d9224fd6147d1936be9b4962b # lib32-glibc.conf
	774061aff612a377714a509918a9e0e0aafce708b87d2d7e06b1bd1f6542fe70 # sdt.h
	cdc234959c6fdb43f000d3bb7d1080b0103f4080f5e67bcfe8ae1aaf477812f0 # sdt-config.h
	bb2fc5a38158d339a51a4aaab3fe2d5cc496221f77cfce6f74768db91cb5ec1e) # reenable_DT_HASH.patch

