#!/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: libtool requires rebuilt with each new gcc version
# Joborun NOTE: We have decided during this remake of core build toolset to revert to linux-5.10 for
# the linux-api-headers and stick to that kernel strictly for now, instead of chasing Arch's latest
# kernel and strange sourcing.  At least the build environment and tools will be more consistent.
# Unfortunately we have no extra time to research the evolution of the latest kernels.

pkgname=(gcc gcc-libs lib32-gcc-libs gcc-fortran gcc-objc gcc-ada gcc-go gcc-d lto-dump libgccjit)
pkgver=12.2.0
_majorver=${pkgver%%.*}
_commit=2ee5e4300186a92ad73f1a1a64cb918dc76c8d67
pkgrel=01
pkgdesc='The GNU Compiler Collection'
arch=(x86_64)
url='https://gcc.gnu.org'
makedepends=(
  binutils
  doxygen
  gcc-ada
  gcc-d
  git
  lib32-glibc
  lib32-gcc-libs
  libisl
  libmpc
  libxcrypt
  python
  zstd
)
checkdepends=(
  dejagnu
  expect
  inetutils
  python-pytest
  tcl
)
#options=(!emptydirs !lto debug)
options=(!emptydirs !lto)
_libdir=usr/lib/gcc/$CHOST/${pkgver%%+*}
#source=(git://gcc.gnu.org/git/gcc.git#commit=$_commit
#source=(https://sourceware.org/pub/gcc/releases/gcc-${pkgver}/gcc-${pkgver}.tar.xz{,.sig}
source=(git+https://sourceware.org/git/gcc.git#commit=${_commit}
        c89 
        c99
        gcc-ada-repro.patch)

prepare() {
  [[ ! -d gcc ]] && ln -s gcc-${pkgver/+/-} gcc
  cd gcc

  # 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

#  # D hacks
#  patch -Np1 -i "$srcdir/gdc_phobos_path.patch"

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

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

build() {
  local _confflags=(
      --prefix=/usr
      --libdir=/usr/lib
      --libexecdir=/usr/lib
      --mandir=/usr/share/man
      --infodir=/usr/share/info
      --with-bugurl=https://bugs.archlinux.org/
      --with-build-config=bootstrap-lto
      --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-libstdcxx-backtrace
      --enable-link-serialization=1
      --enable-linker-build-id
      --enable-lto
      --enable-multilib
      --enable-plugin
      --enable-shared
      --enable-threads=posix
      --disable-libssp
      --disable-libstdcxx-pch
      --disable-werror
  )

  cd gcc-build

  # Credits @allanmcrae
  # https://github.com/allanmcrae/toolchain/blob/f18604d70c5933c31b51a320978711e4e6791cf1/gcc/PKGBUILD
  # TODO: properly deal with the build issues resulting from this
  CFLAGS=${CFLAGS/-Werror=format-security/}
  CXXFLAGS=${CXXFLAGS/-Werror=format-security/}

  "$srcdir/gcc/configure" \
    --enable-languages=c,c++,ada,fortran,go,lto,objc,obj-c++,d \
    --enable-bootstrap \
    "${_confflags[@]:?_confflags unset}"

  # see https://bugs.archlinux.org/task/71777 for rationale re *FLAGS handling
  make -O STAGE1_CFLAGS="-O2" \
          BOOT_CFLAGS="$CFLAGS" \
          BOOT_LDFLAGS="$LDFLAGS" \
          LDFLAGS_FOR_TARGET="$LDFLAGS" \
          bootstrap

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

  # Build libgccjit separately, to avoid building all compilers with --enable-host-shared
  # which brings a performance penalty
  cd "${srcdir}"/libgccjit-build

  "$srcdir/gcc/configure" \
    --enable-languages=jit \
    --disable-bootstrap \
    --enable-host-shared \
    "${_confflags[@]:?_confflags unset}"

  # see https://bugs.archlinux.org/task/71777 for rationale re *FLAGS handling
  make -O STAGE1_CFLAGS="-O2" \
          BOOT_CFLAGS="$CFLAGS" \
          BOOT_LDFLAGS="$LDFLAGS" \
          LDFLAGS_FOR_TARGET="$LDFLAGS" \
          all-gcc

  cp -a gcc/libgccjit.so* ../gcc-build/gcc/
}

#######
#  After many hours, unlike previous builds, this thing exceeded my space of 20GB and
#  crashed right at the end with no space to write the remaining pkgs beyond the gcc-11.2 
#  so on next run I disabled the damn check section ..
#
#check() {
#  cd gcc-build
#
#  # disable libphobos test to avoid segfaults 
#  sed -i '/maybe-check-target-libphobos \\/d' Makefile
#
#  # do not abort on error as some are "expected"
#  make -O -k check || true
#  "$srcdir/gcc/contrib/test_summary"
#}
########

package_gcc-libs() {
  pkgdesc='Runtime libraries shipped by GCC'
  depends=('glibc>=2.27')
  options=(!emptydirs !strip)
  provides=($pkgname-multilib libgo.so libgfortran.so libgphobos.so
            libubsan.so libasan.so libtsan.so liblsan.so)
  replaces=($pkgname-multilib libgphobos)

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

  for lib in libatomic \
             libgfortran \
             libgo \
             libgomp \
             libitm \
             libquadmath \
             libsanitizer/{a,l,ub,t}san \
             libstdc++-v3/src \
             libvtv; do
    make -C $CHOST/$lib DESTDIR="$pkgdir" install-toolexeclibLTLIBRARIES
  done

  make -C $CHOST/libobjc DESTDIR="$pkgdir" install-libs
  make -C $CHOST/libstdc++-v3/po DESTDIR="$pkgdir" install

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

  for lib in libgomp \
             libitm \
             libquadmath; do
    make -C $CHOST/$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() {
  pkgdesc="The GNU Compiler Collection - C and C++ frontends"
  depends=("gcc-libs=$pkgver-$pkgrel" 'binutils>=2.28' libmpc zstd libisl.so)
  groups=('base-devel')
  optdepends=('lib32-gcc-libs: for generating code for 32-bit ABI')
  provides=($pkgname-multilib)
  replaces=($pkgname-multilib)
  options=(!emptydirs staticlibs debug)

  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 gcc DESTDIR="$pkgdir" install-man install-info
  rm "$pkgdir"/usr/share/man/man1/{gccgo,gfortran,lto-dump,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() {
  pkgdesc='Fortran front-end for GCC'
  depends=("gcc=$pkgver-$pkgrel" libisl.so)
  provides=($pkgname-multilib)
  replaces=($pkgname-multilib)

  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() {
  pkgdesc='Objective-C front-end for GCC'
  depends=("gcc=$pkgver-$pkgrel" libisl.so)
  provides=($pkgname-multilib)
  replaces=($pkgname-multilib)

  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() {
  pkgdesc='Ada front-end for GCC (GNAT)'
  depends=("gcc=$pkgver-$pkgrel" libisl.so)
  provides=($pkgname-multilib)
  replaces=($pkgname-multilib)
  options=(!emptydirs staticlibs debug)

  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() {
  pkgdesc='Go front-end for GCC'
  depends=("gcc=$pkgver-$pkgrel" libisl.so)
  provides=("go=1.18" $pkgname-multilib)
  replaces=($pkgname-multilib)
  conflicts=(go)

  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/"
}

package_lib32-gcc-libs() {
  pkgdesc='32-bit runtime libraries shipped by GCC'
  depends=('lib32-glibc>=2.27')
  provides=(libgo.so libgfortran.so libubsan.so libasan.so)
  groups=(multilib-devel)
  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() {
  pkgdesc="D frontend for GCC"
  depends=("gcc=$pkgver-$pkgrel" libisl.so)
  provides=(gdc)
  replaces=(gdc)
  options=(staticlibs debug)

  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 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_lto-dump() {
  pkgdesc="Dump link time optimization object files"
  depends=("gcc=$pkgver-$pkgrel" libisl.so)

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

  # 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_libgccjit() {
  pkgdesc="Just-In-Time Compilation with GCC backend"
  depends=("gcc=$pkgver-$pkgrel" libisl.so)

  cd gcc-build
  make -C gcc DESTDIR="$pkgdir" jit.install-common jit.install-info

  # 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/"
}

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

license=(GPL LGPL FDL custom)

validpgpkeys=(F3691687D867B81B51CE07D9BBE43771487328A9  # bpiotrowski@archlinux.org
              86CFFCA918CF3AF47147588051E8B148A9999C34  # evangelos@foutrelis.com
              13975A70E63C361C73AE69EF6EEB81F8981C74C7  # richard.guenther@gmail.com
              D3A93CAD751C2AF4F8C7AD516C35B99309B5FA62) # Jakub Jelinek <jakub@redhat.com>

sha256sums=(SKIP
	de48736f6e4153f03d0a5d38ceb6c6fdb7f054e8f47ddd6af0a3dbf14f27b931 # c89
	2513c6d9984dd0a2058557bf00f06d8d5181734e41dcfe07be7ed86f2959622a # c99
	1773f5137f08ac1f48f0f7297e324d5d868d55201c03068670ee4602babdef2f) # gcc-ada-repro.patch