path: root/PKGBUILD

# Maintainer: Pellegrino Prevete < pellegrinoprevete at gmail dot com >
# Contributor: Georgios Kourachanis < geo dot kourachanis at gmail dot com >
# Contributor: Anatol Pomozov < anatol dot pomozov at gmail dot com > (arm-none-eabi-gcc)
# Contributor: Martin Schmölzer < mschmoelzer at gmail dot com > (arm-none-eabi-gcc)

_target="arm-none-eabi"
_pkgbase="gcc"
pkgname="${_target}-${_pkgbase}55"
pkgver=5.5.0
# _islver=0.24
_islver=0.18
pkgrel=1
# _snapshot=7-20170907
pkgdesc=("The GNU Compiler Collection - cross compiler"
	"for ARM EABI (bare-metal) target")
pkgdesc="${_pkgdesc[*]}"
arch=(
  x86_64
  i686
  pentium4
)
_domain="${_pkgbase}.gnu.org"
url="http://${_domain}"
_ftp_url="ftp://${_domain}/pub/${_pkgbase}"
license=(GPL LGPL FDL)
depends=(
  "${_target}-binutils"
  "libmpc"
  "zlib"
)
makedepends=(
  "${_target}-newlib"
  "gcc7"
  # "gcc<8"
  "gmp"
  "mpfr"
)
provides=(
  "${_target}-gcc=${pkgver}"
)
conflicts=(
  "${_target}-gcc"
)
optdepends=(
  "${_target}-newlib: Standard C library optimized for embedded systems"
)
options=(
  !emptydirs
  !strip
)
source=(
  "${_ftp_url}/releases/${_pkgbase}-${pkgver}/${_pkgbase}-${pkgver}.tar.xz"
  # "${_ftp_url}/snapshots/${_snapshot}/${_pkgbase}-${_snapshot}.tar.xz"
  "${_ftp_url}/infrastructure/isl-${_islver}.tar.bz2"
  "enable-with-multilib-list-for-arm.patch"
)
sha512sums=(
  '670ff52c2ae12c7852c12987e91798c5aa8bd6daf21f0d6e0cd57a4aa59cc4f06a837fe76426eaa1424cfddca937bed377680700eadc04d76b9180d462364fa1'
  # 'aab3bddbda96b801d0f56d2869f943157aad52a6f6e6a61745edd740234c635c38231af20bc3f1a08d416a5e973a90e18249078ed8e4ae2f1d5de57658738e95'
  '85d0b40f4dbf14cb99d17aa07048cdcab2dc3eb527d2fbb1e84c41b2de5f351025370e57448b63b2b8a8cf8a0843a089c3263f9baee1542d5c2e1cb37ed39d94'
  '4831a862a0ee50918297f35da48919f326ad9e8b3a2a97d4b130e08c0e781a0e6c44e918d2618ba73be2ce0f8d0365b063ed5650a4bd8a5e26ee37a78647b2d2')

if [ -n "${_snapshot}" ]; then
  _basedir="gcc-${_snapshot}"
else
  _basedir="gcc-${pkgver}"
fi

prepare() {
  cd "${_basedir}"

  # link isl for in-tree builds
  ln -s "../isl-${_islver}" isl

  echo "${pkgver}" > gcc/BASE-VER

  # hack! - some configure tests for header files using "$CPP $CPPFLAGS"
  sed -i "/ac_cpp=/s/\$CPPFLAGS/\$CPPFLAGS -O2/" \
      {libiberty,gcc}"/configure"

  patch -p1 < \
    "${srcdir}/enable-with-multilib-list-for-arm.patch"
  mkdir "${srcdir}/build-"{gcc,gcc-nano}
}

_build_gcc() {
  local _configure \
	_flag \
	_rmflag \
        _flags=() \
        _cflags=() \
	_cxxflags=() \
	_rmflags=()
  _configure="${srcdir}/${_basedir}/configure"
  _cxxflags=(
    '-static-libgcc'
    '-Wl,-Bstatic,-lstdc++,-Bdynamic'
    '-lm')
  _rmflags=(
    "-fstack-clash-protection"
    "-fcf-protection")
  _configure_options=(
    --target="${_target}"
    --prefix="/usr"
    --with-sysroot="/usr/${_target}"
    --with-native-system-header-dir="/include"
    --libexecdir="/usr/lib"
    --enable-languages=c,c++
    --enable-plugins
    --disable-decimal-float
    --disable-libffi
    --disable-libgomp
    --disable-libmudflap
    --disable-libquadmath
    --disable-libssp
    --disable-libstdcxx-pch
    --disable-nls
    --disable-shared
    --disable-threads
    --disable-tls
    --with-gnu-as
    --with-gnu-ld
    --with-system-zlib
    --with-newlib
    --with-headers="/usr/${_target}/include"
    --with-python-dir="share/${_pkgbase}-${_target}"
    --with-gmp
    --with-mpfr
    --with-mpc
    --with-isl
    --with-libelf
    --enable-gnu-indirect-function
    --with-host-libstdcxx="${_cxxflags[@]}"
    --with-pkgversion='Arch Repository'
    --with-bugurl='https://bugs.archlinux.org/'
    --with-multilib-list=armv6-m,armv7-m,armv7e-m,armv7-r)
  IFS=' ' \
    read -r -a _flags <<< "${CFLAGS}"
  for _flag in "${_flags[@]}"; do
    [[ "${_flag}" != "-fstack-clash-protection" ]] && \
    [[ "${_flag}" != "-fcf-protection" ]] && \
      _cflags+=("${_flag}")
  done
  export CFLAGS="${_cflags[*]}"
  LD_LIBRARY_PATH="/usr/lib/${_pkgbase}/$(uname -m)-pc-linux-gnu/7.5.0" \
  CC="/usr/bin/gcc-7" \
  CXX="/usr/bin/g++-7" \
    "${_configure}" "${_configure_options[@]}"
  LD_LIBRARY_PATH="/usr/lib/${_pkgbase}/$(uname -m)x86_64-pc-linux-gnu/7.5.0" \
  CC="/usr/bin/gcc-7" \
  CXX="/usr/bin/g++-7" \
  cc="/usr/bin/gcc-7" \
  cxx="/usr/bin/g++-7" \
    make CC="/usr/bin/gcc-7" \
         CXX="/usr/bin/g++-7" \
         INHIBIT_LIBC_CFLAGS='-DUSE_TM_CLONE_REGISTRY=0'
}

build() {
  cd "${srcdir}/build-${_pkgbase}"
  export CFLAGS_FOR_TARGET='-g -Os -ffunction-sections -fdata-sections'
  export CXXFLAGS_FOR_TARGET='-g -Os -ffunction-sections -fdata-sections'
  _build_gcc

  # Build libstdc++ without exceptions support (the 'nano' variant)
  cd "${srcdir}/build-${pkgbase}-nano"
  export CFLAGS_FOR_TARGET='-g -Os -ffunction-sections -fdata-sections -fno-exceptions'
  export CXXFLAGS_FOR_TARGET='-g -Os -ffunction-sections -fdata-sections -fno-exceptions'  
  "_build_${_pkgbase}"
}

package() {
  local _multilib
  cd "${srcdir}/build-${_pkgbase}"
  make DESTDIR="${pkgdir}" \
       install -j1

  cd "${srcdir}/build-${_pkgbase}-nano"
  make DESTDIR="${pkgdir}.nano" \
       install -j1
  # we need only libstdc nano files
  multilibs=(
    $(${pkgdir}/usr/bin/${_target}-${_pkgbase}
    -print-multi-lib 2>/dev/null))
  for _multilib in "${multilibs[@]}"; do
    dir="${_multilib%%;*}"
    from_dir="${pkgdir}.nano/usr/${_target}/lib/${dir}"
    to_dir="${pkgdir}/usr/${_target}/lib/${dir}"
    cp -f \
       "${from_dir}/libstdc++.a" \
       "${to_dir}/libstdc++_nano.a"
    cp -f \
       "${from_dir}/libsupc++.a" \
       "${to_dir}/libsupc++_nano.a"
  done

  # strip target binaries
  find "$pkgdir"/usr/lib/gcc/$_target/$pkgver "$pkgdir"/usr/$_target/lib -type f -and \( -name \*.a -or -name \*.o \) -exec $_target-objcopy -R .comment -R .note -R .debug_info -R .debug_aranges -R .debug_pubnames -R .debug_pubtypes -R .debug_abbrev -R .debug_line -R .debug_str -R .debug_ranges -R .debug_loc '{}' \;

  # strip host binaries
  find "$pkgdir"/usr/bin/ "$pkgdir"/usr/lib/gcc/$_target/$pkgver -type f -and \( -executable \) -exec strip '{}' \;

  # Remove files that conflict with host gcc package
  rm -r "$pkgdir"/usr/share/man/man7
  rm -r "$pkgdir"/usr/share/info
  rm "$pkgdir"/usr/lib/libcc1.*
}