# Merged with official ABS gcc PKGBUILD by João, 2021/08/03 (all respective contributors apply herein)
# Maintainer: João Figueiredo & chaotic-aur <islandc0der@chaotic.cx>
# toolchain build order: linux-api-headers->glibc->binutils->gcc->binutils->glibc
# NOTE: libtool requires rebuilding with each new gcc version

# You probably don't need support for all the languages, feel free to remove the ones you don't;
# Just edit the --enable-languages option as well as the pkgname array, and comment out the pkg functions :)

pkgbase=gcc-git
pkgname=({gcc,gcc-libs,gcc-fortran,gcc-objc,gcc-ada,gcc-go,gcc-d}-git)
pkgver=12.0.0_r189756.g2c2148d8c14
_majorver=${pkgver%%.*}
_isl_link=https://mirrors.slackware.com/slackware/slackware64-current/source/l/isl
_isl=$(curl -s "$_isl_link/?C=M;O=A" | grep "isl-.*tar\.xz" | tail -1 | sed -e 's/.*href="//' -e 's/\.mirrorlist.*//')
pkgrel=1
pkgdesc='The GNU Compiler Collection'
arch=($CARCH)
license=(GPL LGPL FDL custom)
url='https://gcc.gnu.org'
makedepends=(git binutils libmpc gcc-ada doxygen python git libxcrypt)
checkdepends=(dejagnu inetutils)
options=(!emptydirs)
_libdir=usr/lib/gcc/$CHOST/${pkgver%_*}

source=(git://gcc.gnu.org/git/gcc.git
        $_isl_link/$_isl
        c89 c99
        gdc_phobos_path.patch
        fs64270.patch
        ipa-fix-bit-CPP-when-combined-with-IPA-bit-CP.patch
        ipa-fix-ICE-in-get_default_value.patch
        gcc-ada-repro.patch
        gcc11-Wno-format-security.patch)
sha256sums=('SKIP'
            'SKIP'
            'de48736f6e4153f03d0a5d38ceb6c6fdb7f054e8f47ddd6af0a3dbf14f27b931'
            '2513c6d9984dd0a2058557bf00f06d8d5181734e41dcfe07be7ed86f2959622a'
            'c86372c207d174c0918d4aedf1cb79f7fc093649eb1ad8d9450dccc46849d308'
            '1ef190ed4562c4db8c1196952616cd201cfdd788b65f302ac2cc4dabb4d72cee'
            'fcb11c9bcea320afd202b031b48f8750aeaedaa4b0c5dddcd2c0a16381e927e4'
            '42865f2af3f48140580c4ae70b6ea03b5bdca0f29654773ef0d42ce00d60ea16'
            '1773f5137f08ac1f48f0f7297e324d5d868d55201c03068670ee4602babdef2f'
            '504e4b5a08eb25b6c35f19fdbe0c743ae4e9015d0af4759e74150006c283585e')

pkgver() {
  cd ${pkgbase%-git}
  echo "$(cat gcc/BASE-VER)_r$(git rev-list --count HEAD).g$(git rev-parse --short HEAD)"
}

prepare() {
  cd gcc

  # link isl for in-tree build
  ln -s ../${_isl%.tar.xz} isl

  # Do not run fixincludes
  sed -i 's@\./fixinc\.sh@-c true@' gcc/Makefile.in

  # Arch Linux installs x86_64 libraries /lib
  sed -i '/m64=/s/lib64/lib/' gcc/config/i386/t-linux64

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

  # D hacks
  patch -p1 -i "$srcdir/gdc_phobos_path.patch"

  # Reproducible gcc-ada
  patch -Np0 < "$srcdir/gcc-ada-repro.patch"

  # configure.ac: When adding -Wno-format, also add -Wno-format-security
  patch -Np0 < "$srcdir/gcc11-Wno-format-security.patch"

  mkdir -p "$srcdir/gcc-build"
}

build() {
  cd gcc-build

  # using -pipe causes spurious test-suite failures
  # http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48565
  CFLAGS=${CFLAGS/-pipe}
  CXXFLAGS=${CXXFLAGS/-pipe}

  # See https://aur.archlinux.org/pkgbase/gcc-git/#comment-822240
  CXXFLAGS=${CXXFLAGS/-Werror=format-security}

  # avoid warning _FORTIFY_SOURCE requires compiling with optimization (-O)
  CPPFLAGS+=" -O2"
  CPPFLAGS=${CPPFLAGS/-Werror=format-security}

  "$srcdir/gcc/configure" --prefix=/usr \
      --libdir=/usr/lib \
      --libexecdir=/usr/lib \
      --mandir=/usr/share/man \
      --infodir=/usr/share/info \
      --with-bugurl=https://bugs.archlinux.org/ \
      --enable-languages=c,c++,ada,fortran,go,lto,objc,obj-c++,d \
      --with-isl \
      --with-linker-hash-style=gnu \
      --with-system-zlib \
      --enable-__cxa_atexit \
      --enable-cet=auto \
      --enable-checking=release \
      --enable-clocale=gnu \
      --enable-default-pie \
      --enable-default-ssp \
      --enable-gnu-indirect-function \
      --enable-gnu-unique-object \
      --enable-install-libiberty \
      --enable-linker-build-id \
      --enable-lto \
      --enable-multilib \
      --enable-plugin \
      --enable-shared \
      --enable-threads=posix \
      --disable-libssp \
      --disable-libstdcxx-pch \
      --disable-libunwind-exceptions \
      --disable-werror \
      gdc_include_dir=/usr/include/dlang/gdc

  make

  # make documentation
  make -C $CHOST/libstdc++-v3/doc doc-man-doxygen
}

check() {
  cd gcc-build

  # disable libphobos test to avoid segfaults and other unfunny ways to waste my time
  sed -i '/maybe-check-target-libphobos \\/d' Makefile

  # do not abort on error as some are "expected"
  make -k check || true
  "$srcdir/gcc/contrib/test_summary"
}

package_gcc-libs-git() {
  pkgdesc='Runtime libraries shipped by GCC'
  depends=(glibc)
  options+=(!strip)
  provides=("gcc-libs=$pkgver-$pkgrel" gcc-multilib{,-git} libgo.so libgfortran.so libgphobos.so
            libubsan.so libasan.so libtsan.so liblsan.so)
  conflicts=(gcc-libs)
  replaces=(gcc-multilib-git libgphobos-git)

  cd gcc-build/$CHOST
  make -C libgcc DESTDIR="$pkgdir" install-shared
  rm -f "$pkgdir/$_libdir/libgcc_eh.a"

  # beautiful hack I came up with to skip libs when they're missing :)
  # i.e. when the respective languages were disabled
  shopt -s nullglob
  for lib in libatomic \
             [l]ibgfortran \
             [l]ibgo \
             libgomp \
             libitm \
             libquadmath \
             libsanitizer/{a,l,ub,t}san \
             libstdc++-v3/src \
             libvtv; do
    make -C $lib DESTDIR="$pkgdir" install-toolexeclibLTLIBRARIES
  done
  shopt -u nullglob

  # why ! and || instead of just &&, i hear you ask?
  # so that $? is always 0 (unless make fails)
  [[ ! -e libobjc ]] || make -C libobjc DESTDIR="$pkgdir" install-libs
  make -C libstdc++-v3/po DESTDIR="$pkgdir" install

  make -C libphobos DESTDIR="$pkgdir" install
  rm -rf "$pkgdir"/$_libdir/include/d/
  rm -f "$pkgdir"/usr/lib/libgphobos.spec

  for lib in libgomp \
             libitm \
             libquadmath; do
    make -C $lib DESTDIR="$pkgdir" install-info
  done

  # remove files provided by lib32-gcc-libs
  rm -rf "$pkgdir"/usr/lib32/

  # Install Runtime Library Exception
  install -Dm644 "$srcdir/gcc/COPYING.RUNTIME" \
    "$pkgdir/usr/share/licenses/gcc-libs/RUNTIME.LIBRARY.EXCEPTION"
}

package_gcc-git() {
  pkgdesc="The GNU Compiler Collection - C and C++ frontends"
  depends=("gcc-libs-git=$pkgver-$pkgrel" "binutils>=2.28" libmpc)
  groups=(base-devel-git)
  optdepends=('lib32-gcc-libs-git: for generating code for 32-bit ABI')
  provides=(gcc{,-multilib{,-git}})
  conflicts=(gcc)
  replaces=(gcc-multilib-git)
  options+=(staticlibs)

  cd gcc-build

  make -C gcc DESTDIR="$pkgdir" install-driver install-cpp install-gcc-ar \
    c++.install-common install-headers install-plugin install-lto-wrapper

  install -m755 -t "$pkgdir/usr/bin/" gcc/gcov{,-tool}
  install -m755 -t "$pkgdir/${_libdir}/" gcc/{cc1,cc1plus,collect2,lto1}

  make -C $CHOST/libgcc DESTDIR="$pkgdir" install
  make -C $CHOST/32/libgcc DESTDIR="$pkgdir" install
  rm -f "$pkgdir"/usr/lib{,32}/libgcc_s.so*

  make -C $CHOST/libstdc++-v3/src DESTDIR="$pkgdir" install
  make -C $CHOST/libstdc++-v3/include DESTDIR="$pkgdir" install
  make -C $CHOST/libstdc++-v3/libsupc++ DESTDIR="$pkgdir" install
  make -C $CHOST/libstdc++-v3/python DESTDIR="$pkgdir" install
  make -C $CHOST/32/libstdc++-v3/src DESTDIR="$pkgdir" install
  make -C $CHOST/32/libstdc++-v3/include DESTDIR="$pkgdir" install
  make -C $CHOST/32/libstdc++-v3/libsupc++ DESTDIR="$pkgdir" install

  make DESTDIR="$pkgdir" install-libcc1
  install -d "$pkgdir/usr/share/gdb/auto-load/usr/lib"
  mv "$pkgdir"/usr/lib/libstdc++.so.6.*-gdb.py \
    "$pkgdir/usr/share/gdb/auto-load/usr/lib/"
  rm "$pkgdir"/usr/lib{,32}/libstdc++.so*

  make DESTDIR="$pkgdir" install-fixincludes
  make -C gcc DESTDIR="$pkgdir" install-mkheaders

  make -C lto-plugin DESTDIR="$pkgdir" install
  install -dm755 "$pkgdir"/usr/lib/bfd-plugins/
  ln -s /${_libdir}/liblto_plugin.so \
    "$pkgdir/usr/lib/bfd-plugins/"

  make -C $CHOST/libgomp DESTDIR="$pkgdir" install-nodist_{libsubinclude,toolexeclib}HEADERS
  make -C $CHOST/libitm DESTDIR="$pkgdir" install-nodist_toolexeclibHEADERS
  make -C $CHOST/libquadmath DESTDIR="$pkgdir" install-nodist_libsubincludeHEADERS
  make -C $CHOST/libsanitizer DESTDIR="$pkgdir" install-nodist_{saninclude,toolexeclib}HEADERS
  make -C $CHOST/libsanitizer/asan DESTDIR="$pkgdir" install-nodist_toolexeclibHEADERS
  make -C $CHOST/libsanitizer/tsan DESTDIR="$pkgdir" install-nodist_toolexeclibHEADERS
  make -C $CHOST/libsanitizer/lsan DESTDIR="$pkgdir" install-nodist_toolexeclibHEADERS
  make -C $CHOST/32/libgomp DESTDIR="$pkgdir" install-nodist_toolexeclibHEADERS
  make -C $CHOST/32/libitm DESTDIR="$pkgdir" install-nodist_toolexeclibHEADERS
  make -C $CHOST/32/libsanitizer DESTDIR="$pkgdir" install-nodist_{saninclude,toolexeclib}HEADERS
  make -C $CHOST/32/libsanitizer/asan DESTDIR="$pkgdir" install-nodist_toolexeclibHEADERS

  make -C libiberty DESTDIR="$pkgdir" install
  install -m644 libiberty/pic/libiberty.a "$pkgdir/usr/lib"

  make -C gcc DESTDIR="$pkgdir" install-man install-info

  # don't fail if can't remove the files (when certain languages were disabled)
  rm "$pkgdir"/usr/share/man/man1/{gccgo,gfortran,gdc}.1 ||:
  rm "$pkgdir"/usr/share/info/{gccgo,gfortran,gnat-style,gnat_rm,gnat_ugn,gdc}.info ||:

  make -C libcpp DESTDIR="$pkgdir" install
  make -C gcc DESTDIR="$pkgdir" install-po

  # many packages expect this symlink
  ln -s gcc "$pkgdir"/usr/bin/cc

  # POSIX conformance launcher scripts for c89 and c99
  install -Dm755 "$srcdir/c89" "$pkgdir/usr/bin/c89"
  install -Dm755 "$srcdir/c99" "$pkgdir/usr/bin/c99"

  # install the libstdc++ man pages
  make -C $CHOST/libstdc++-v3/doc DESTDIR="$pkgdir" doc-install-man

  # remove files provided by lib32-gcc-libs
  rm -f "$pkgdir"/usr/lib32/lib{stdc++,gcc_s}.so

  # byte-compile python libraries
  python -m compileall "$pkgdir/usr/share/gcc-${pkgver%_*}/"
  python -O -m compileall "$pkgdir/usr/share/gcc-${pkgver%_*}/"

  # Install Runtime Library Exception
  install -d "$pkgdir/usr/share/licenses/$pkgname/"
  ln -s /usr/share/licenses/gcc-libs/RUNTIME.LIBRARY.EXCEPTION \
    "$pkgdir/usr/share/licenses/$pkgname/"
}

package_gcc-fortran-git() {
  pkgdesc='Fortran front-end for GCC'
  depends=("gcc-git=$pkgver-$pkgrel")
  provides=(gcc-fortran gcc-multilib{,-git})
  conflicts=(gcc-fortran)
  replaces=(gcc-multilib-git)

  cd gcc-build
  make -C $CHOST/libgfortran DESTDIR="$pkgdir" install-cafexeclibLTLIBRARIES \
    install-{toolexeclibDATA,nodist_fincludeHEADERS,gfor_cHEADERS}
  make -C $CHOST/32/libgfortran DESTDIR="$pkgdir" install-cafexeclibLTLIBRARIES \
    install-{toolexeclibDATA,nodist_fincludeHEADERS,gfor_cHEADERS}
  make -C $CHOST/libgomp DESTDIR="$pkgdir" install-nodist_fincludeHEADERS
  make -C gcc DESTDIR="$pkgdir" fortran.install-{common,man,info}
  install -Dm755 gcc/f951 "$pkgdir/${_libdir}/f951"

  ln -s gfortran "$pkgdir/usr/bin/f95"

  # Install Runtime Library Exception
  install -d "$pkgdir/usr/share/licenses/$pkgname/"
  ln -s /usr/share/licenses/gcc-libs/RUNTIME.LIBRARY.EXCEPTION \
    "$pkgdir/usr/share/licenses/$pkgname/"
}

package_gcc-objc-git() {
  pkgdesc='Objective-C front-end for GCC'
  depends=("gcc-git=$pkgver-$pkgrel")
  provides=(gcc-multilib{,-git})
  conflicts=(gcc-objc)
  replaces=(gcc-multilib-git)

  cd gcc-build
  make DESTDIR="$pkgdir" -C $CHOST/libobjc install-headers
  install -dm755 "$pkgdir/${_libdir}"
  install -m755 gcc/cc1obj{,plus} "$pkgdir/${_libdir}/"

  # Install Runtime Library Exception
  install -d "$pkgdir/usr/share/licenses/$pkgname/"
  ln -s /usr/share/licenses/gcc-libs/RUNTIME.LIBRARY.EXCEPTION \
    "$pkgdir/usr/share/licenses/$pkgname/"
}

package_gcc-ada-git() {
  pkgdesc='Ada front-end for GCC (GNAT)'
  depends=("gcc-git=$pkgver-$pkgrel")
  provides=(gcc-ada gcc-multilib{,-git})
  conflicts=(gcc-ada)
  replaces=(gcc-multilib-git)
  options+=(staticlibs)

  cd gcc-build/gcc
  make DESTDIR="$pkgdir" ada.install-{common,info}
  install -m755 gnat1 "$pkgdir/${_libdir}"

  cd "$srcdir"/gcc-build/$CHOST/libada
  make DESTDIR="${pkgdir}" INSTALL="install" \
    INSTALL_DATA="install -m644" install-libada

  cd "$srcdir"/gcc-build/$CHOST/32/libada
  make DESTDIR="${pkgdir}" INSTALL="install" \
    INSTALL_DATA="install -m644" install-libada

  ln -s gcc "$pkgdir/usr/bin/gnatgcc"

  # insist on dynamic linking, but keep static libraries because gnatmake complains
  mv "$pkgdir"/${_libdir}/adalib/libgna{rl,t}-${_majorver}.so "$pkgdir/usr/lib"
  ln -s libgnarl-${_majorver}.so "$pkgdir/usr/lib/libgnarl.so"
  ln -s libgnat-${_majorver}.so "$pkgdir/usr/lib/libgnat.so"
  rm -f "$pkgdir"/${_libdir}/adalib/libgna{rl,t}.so

  install -d "$pkgdir/usr/lib32/"
  mv "$pkgdir"/${_libdir}/32/adalib/libgna{rl,t}-${_majorver}.so "$pkgdir/usr/lib32"
  ln -s libgnarl-${_majorver}.so "$pkgdir/usr/lib32/libgnarl.so"
  ln -s libgnat-${_majorver}.so "$pkgdir/usr/lib32/libgnat.so"
  rm -f "$pkgdir"/${_libdir}/32/adalib/libgna{rl,t}.so

  # Install Runtime Library Exception
  install -d "$pkgdir/usr/share/licenses/$pkgname/"
  ln -s /usr/share/licenses/gcc-libs/RUNTIME.LIBRARY.EXCEPTION \
    "$pkgdir/usr/share/licenses/$pkgname/"
}

package_gcc-go-git() {
  pkgdesc='Go front-end for GCC'
  depends=("gcc-git=$pkgver-$pkgrel")
  provides=("go=1.12.2" gcc-multilib{,-git})
  conflicts=(gcc-go go{,-git})
  replaces=(gcc-multilib-git)

  cd gcc-build
  make -C $CHOST/libgo DESTDIR="$pkgdir" install-exec-am
  make -C $CHOST/32/libgo DESTDIR="$pkgdir" install-exec-am
  make DESTDIR="$pkgdir" install-gotools
  make -C gcc DESTDIR="$pkgdir" go.install-{common,man,info}

  rm -f "$pkgdir"/usr/lib{,32}/libgo.so*
  install -Dm755 gcc/go1 "$pkgdir/${_libdir}/go1"

  # Install Runtime Library Exception
  install -d "$pkgdir/usr/share/licenses/$pkgname/"
  ln -s /usr/share/licenses/gcc-libs/RUNTIME.LIBRARY.EXCEPTION \
    "$pkgdir/usr/share/licenses/$pkgname/"
}

## This package already exists in the AUR
# package_lib32-gcc-libs-git() {
#   pkgdesc='32-bit runtime libraries shipped by GCC'
#   depends=("lib32-glibc>=2.27")
#   provides=(lib32-gcc-libs libgo.so libgfortran.so libubsan.so libasan.so)
#   conflicts=(lib32-gcc-libs)
#   groups=(multilib-devel-git)
#   options=(!emptydirs !strip)
# 
#   cd gcc-build
# 
#   make -C $CHOST/32/libgcc DESTDIR="$pkgdir" install-shared
#   rm -f "$pkgdir/$_libdir/32/libgcc_eh.a"
# 
#   for lib in libatomic \
#              libgfortran \
#              libgo \
#              libgomp \
#              libitm \
#              libquadmath \
#              libsanitizer/{a,l,ub}san \
#              libstdc++-v3/src \
#              libvtv; do
#     make -C $CHOST/32/$lib DESTDIR="$pkgdir" install-toolexeclibLTLIBRARIES
#   done
# 
#   make -C $CHOST/32/libobjc DESTDIR="$pkgdir" install-libs
# 
#   make -C $CHOST/libphobos DESTDIR="$pkgdir" install
#   rm -f "$pkgdir"/usr/lib32/libgphobos.spec
# 
#   # remove files provided by gcc-libs
#   rm -rf "$pkgdir"/usr/lib
# 
#   # Install Runtime Library Exception
#   install -Dm644 "$srcdir/gcc/COPYING.RUNTIME" \
#     "$pkgdir/usr/share/licenses/lib32-gcc-libs/RUNTIME.LIBRARY.EXCEPTION"
# }

package_gcc-d-git() {
  pkgdesc="D frontend for GCC"
  depends=("gcc-git=$pkgver-$pkgrel")
  provides=(gcc-d gdc{,-git})
  conflicts=(gcc-d)
  replaces=(gdc-git)
  options=(staticlibs)

  cd gcc-build
  make -C gcc DESTDIR="$pkgdir" d.install-{common,man,info}

  install -Dm755 gcc/gdc "$pkgdir"/usr/bin/gdc
  install -Dm755 gcc/d21 "$pkgdir"/"$_libdir"/d21

  make -C $CHOST/libphobos DESTDIR="$pkgdir" install
  rm -f "$pkgdir/usr/lib/"lib{gphobos,gdruntime}.so*
  rm -f "$pkgdir/usr/lib32/"lib{gphobos,gdruntime}.so*

  install -d "$pkgdir"/usr/include/dlang
  ln -s /"${_libdir}"/include/d "$pkgdir"/usr/include/dlang/gdc

  # Install Runtime Library Exception
  install -d "$pkgdir/usr/share/licenses/$pkgname/"
  ln -s /usr/share/licenses/gcc-libs/RUNTIME.LIBRARY.EXCEPTION \
    "$pkgdir/usr/share/licenses/$pkgname/"
}