%global pkgvers 0
%global scdate0 20240507
%global sctags0 releases/gcc-14.1.0
%global scfilt0 releases/gcc.*^{}
%global source0 https://github.com/gcc-mirror/gcc.git

%global bootstrap 0
%define sysarch linux-gnu
%define targets aarch64;or1k;ppc64le;riscv32;riscv64

Name:           cross-%{sysarch}-gcc
Version:        %(curl -s https://raw.githubusercontent.com/gcc-mirror/gcc/%{sctags0}/gcc/BASE-VER)
Release:        %{scdate0}.%{pkgvers}%{?dist}
Summary:        GNU GCC for cross-compilation to cross targets
License:        GPLv2+ and GPLv3+ and LGPLv2+ and BSD

URL:            https://gcc.gnu.org

%define maj_ver %(echo "%{version}" | cut -d'.' -f1)
%define cpulist %(echo "%{targets}" | sed "s|%{_arch}||g")

BuildRequires:  git gcc-c++ flex bison texinfo
BuildRequires:  zlib-devel libzstd-devel libunwind-devel gmp-devel mpfr-devel libmpc-devel
%if ! %{bootstrap}
BuildRequires:  isl-devel
%endif
%if ! (0%{?rhel} == 9)
BuildRequires:  autogen
%endif
%{lua:
for target in string.gmatch(rpm.expand("%{cpulist}"), "[%w_-]+")
do
  print("BuildRequires: "..target.."-linux-gnu-binutils\n")
  if (rpm.expand("%{bootstrap}") == "0") then
    print("Suggests:  "..target.."-glibc\n")
    print("BuildRequires:  "..target.."-libc\n")
    print("BuildRequires:  "..target.."-kernel-headers\n")
  end
end}

%global __brp_strip_lto %{nil}
%global __os_install_post /usr/lib/rpm/brp-compress
%global __provides_exclude_from ^(%{_prefix}/.*-%{sysarch}/.*$|%{_prefix}/lib/gcc/.*-%{sysarch}/.*$)
%global __requires_exclude_from ^(%{_prefix}/.*-%{sysarch}/.*$|%{_prefix}/lib/gcc/.*-%{sysarch}/.*$)
%global optflags %(echo %{optflags} | sed 's|-Werror=format-security||')

%description
This is a Cross Compiling version of GNU GCC, which can be used to
compile for the cross platform, instead of for the native platform.

%{lua:
for target in string.gmatch(rpm.expand("%{cpulist}"), "[%w_-]+")
do
  print("%package -n "..target.."-"..rpm.expand("%{sysarch}").."-gcc\n")
  print("Summary: GNU GCC for cross-compilation to "..target.." target\n")
  print("Requires: "..target.."-"..rpm.expand("%{sysarch}").."-binutils\n")
  if (rpm.expand("%{bootstrap}") == "0") then
    print("Requires: "..target.."-libc\n")
    print("Suggests:  "..target.."-glibc\n")
  end
  print(rpm.expand("Provides: "..target.."-gcc = %{version}\n"))
  print("%description -n "..target.."-"..rpm.expand("%{sysarch}").."-gcc\n")
  print("GNU GCC for cross-compilation to "..target.." target\n")
  print("\n")
end}

%if ! %{bootstrap}
%{lua:
for target in string.gmatch(rpm.expand("%{cpulist}"), "[%w_-]+")
do
  print("%package -n "..target.."-"..rpm.expand("%{sysarch}").."-gcc-c++\n")
  print("Summary: GNU GCC C++ for cross-compilation to "..target.." target\n")
  print("Requires: "..target.."-"..rpm.expand("%{sysarch}").."-gcc\n")
  print(rpm.expand("Provides: "..target.."-gcc-c++ = %{version}\n"))
  print("%description -n "..target.."-"..rpm.expand("%{sysarch}").."-gcc-c++\n")
  print("GNU GCC C++ for cross-compilation to "..target.." target\n")
end}
%endif


%prep
%setup -T -c -n %{name}
git clone --depth 1 -n -b %{sctags0} %{source0} .
git fetch --depth 1 origin %{sctags0}
git reset --hard %{sctags0}
git --no-pager log --format=fuller
%autosetup -D -p 0 -T -c -n %{name}


%build
contrib/gcc_update --touch
for target in $(echo "%{cpulist}" | sed 's|;| |g');
do
  echo "Building for [$target]"
  mkdir -p build-$target-%{sysarch}
  pushd build-$target-%{sysarch}
  cargs=""
  case $target in
    ppc64le)
      cargs="$cargs --with-long-double-128"
    ;;
    riscv32)
      cargs="$cargs --with-multilib-list=ilp32d"
    ;;
    riscv64)
      cargs="$cargs --with-multilib-list=lp64d"
    ;;
  esac
  ../configure \
    --prefix=%{_prefix} --mandir=%{_mandir} \
    --libdir=%{_prefix}/lib --includedir=%{_includedir} \
    --with-pkgversion="RedHat %{version}-%{release}" \
    --infodir=%{_infodir} --target=$target-%{sysarch} \
    --with-ld=%{_bindir}/$target-%{sysarch}-ld \
    --with-sysroot=%{_prefix}/$target-%{sysarch} \
    --with-build-sysroot=%{_prefix}/$target-%{sysarch} \
    --with-local-prefix=%{_prefix}/$target-%{sysarch} \
    --with-python-dir=share/$target-%{sysarch}/gcc-%{maj_ver}/python \
    --with-linker-hash-style=gnu \
    --with-gcc-major-version-only \
    --with-zstd \
    --with-system-zlib \
    --with-system-libunwind \
    --enable-tls \
    --enable-lto \
    --enable-plugins \
    --enable-multilib \
    --enable-interwork \
    --enable-checking=release \
    --enable-__cxa_atexit \
    --enable-initfini-array \
    --enable-linker-build-id \
    --enable-libstdcxx-backtrace \
    --enable-gnu-unique-object \
    --enable-gnu-indirect-function \
    --disable-gold \
    --disable-libunwind-exceptions \
    --disable-silent-rules \
    --disable-sjlj-exceptions \
    --disable-libgcj \
    --disable-libmpx \
    --disable-libssp \
    --disable-libgomp \
    --disable-libmudflap \
    --disable-libquadmath \
    --disable-nls \
    --disable-threads \
  %if %{bootstrap}
    --with-newlib \
    --disable-shared \
    --enable-languages=c,lto \
  %else
    --without-newlib \
    --enable-shared \
    --enable-languages=c,c++,lto \
  %endif
    $cargs

  %if %{bootstrap}
  make all-gcc all-target-libgcc %{?_smp_mflags}
  %else
  make %{?_smp_mflags}
  %endif
  popd
done


%install
for target in $(echo "%{cpulist}" | sed 's|;| |g');
do
  echo "Installing for [$target]"
  pushd build-$target-%{sysarch}
  %if %{bootstrap}
  make install-gcc install-target-libgcc DESTDIR=%{buildroot}
  %else
  make install DESTDIR=%{buildroot}
  %endif
  popd

  # we don't want these as we are a cross version
  rm -r %{buildroot}%{_infodir}
  rm -r %{buildroot}%{_mandir}/man7
  rm -f %{buildroot}%{_prefix}/lib/libiberty.a
  rm -f %{buildroot}%{_libdir}/libcc1* ||:
  # these directories are often empty
  rmdir %{buildroot}/%{_prefix}/$target-%{sysarch}/share/gcc-%{maj_ver} ||:
  rmdir %{buildroot}/%{_prefix}/$target-%{sysarch}/share ||:
  # remove library artefacts
  find %{buildroot}/%{_prefix}/$target-%{sysarch}/ -name '*.o' -o -name '*.la' -o -name '*.py' -exec rm {} + ||:
  # and these aren't usefull for embedded targets
  rm -r %{buildroot}%{_prefix}/lib*/gcc/$target-%{sysarch}/%{maj_ver}/install-tools ||:
  rm -r %{buildroot}%{_libexecdir}/gcc/$target-%{sysarch}/%{maj_ver}/install-tools ||:
  rm -f %{buildroot}%{_libexecdir}/gcc/$target-%{sysarch}/%{maj_ver}/*.la
  # move libgcc_s to main
  mv %{buildroot}%{_prefix}/$target-%{sysarch}/lib*/libgcc_s*.so* %{buildroot}%{_prefix}/lib/gcc/$target-%{sysarch}/%{maj_ver}/ ||:
  mv %{buildroot}%{_prefix}/$target-%{sysarch}/lib*/*/libgcc_s*.so* %{buildroot}%{_prefix}/lib/gcc/$target-%{sysarch}/%{maj_ver}/ ||:
  # move docs
  mkdir -p %{buildroot}/usr/$target-%{sysarch}/share/gcc-%{maj_ver}/
  mv %{buildroot}/%{_datadir}/gcc-%{maj_ver}/* %{buildroot}/usr/$target-%{sysarch}/share/gcc-%{maj_ver}/ ||:
  rm -rf %{buildroot}/%{_datadir}/gcc-%{maj_ver} ||:
  rm -rf %{buildroot}%{_prefix}/$target-%{sysarch}%{_prefix}/lib ||:
  %if 0%{?rhel} == 8
  if [ "$target" == "or1k" ]; then
    # no dwarf5 support in rpm
    find %{buildroot}%{_prefix}/$target-%{sysarch}/lib -name '*.so*' -exec or1k-linux-gnu-strip {} + ||:
  fi
  %endif
done


%{lua:
for target in string.gmatch(rpm.expand("%{cpulist}"), "[%w_-]+")
do
  print("%files -n "..target.."-"..rpm.expand("%{sysarch}").."-gcc\n")
  print("%license COPYING*\n")
  print("%doc README\n")
  print(rpm.expand("%{_bindir}").."/"..target.."-"..rpm.expand("%{sysarch}").."-*\n")
  print("%dir "..rpm.expand("%{_prefix}").."/lib/gcc/"..target.."-"..rpm.expand("%{sysarch}").."\n")
  print(rpm.expand("%{_prefix}").."/lib/gcc/"..target.."-"..rpm.expand("%{sysarch}").."/"..rpm.expand("%{maj_ver}").."\n")
  print("%dir "..rpm.expand("%{_libexecdir}").."/gcc/"..target.."-"..rpm.expand("%{sysarch}").."\n")
  print(rpm.expand("%{_libexecdir}").."/gcc/"..target.."-"..rpm.expand("%{sysarch}").."/"..rpm.expand("%{maj_ver}").."\n")
  if (rpm.expand("%{bootstrap}") == "0") then
    print("%exclude "..rpm.expand("%{_bindir}").."/"..target.."-"..rpm.expand("%{sysarch}").."-?++\n")
    print("%exclude "..rpm.expand("%{_prefix}").."/"..target.."-"..rpm.expand("%{sysarch}").."\n")
    print("%exclude "..rpm.expand("%{_libexecdir}").."/gcc/"..target.."-"..rpm.expand("%{sysarch}").."/"..rpm.expand("%{maj_ver}").."/cc1plus\n")
    print("%exclude "..rpm.expand("%{_mandir}").."/man1/"..target.."-"..rpm.expand("%{sysarch}").."-g++.1.gz\n")
  end
  print(rpm.expand("%{_mandir}").."/man1/"..target.."-*.1.gz\n")
  print("\n")
end}

%if ! %{bootstrap}
%{lua:
for target in string.gmatch(rpm.expand("%{cpulist}"), "[%w_-]+")
do
  print("%files -n "..target.."-"..rpm.expand("%{sysarch}").."-gcc-c++\n")
  print(rpm.expand("%{_bindir}").."/"..target.."-"..rpm.expand("%{sysarch}").."-?++\n")
  print("%dir "..rpm.expand("%{_prefix}").."/"..target.."-"..rpm.expand("%{sysarch}").."\n")
  print(rpm.expand("%{_prefix}").."/"..target.."-"..rpm.expand("%{sysarch}").."/*\n")
  print("%dir "..rpm.expand("%{_datadir}").."/"..target.."-"..rpm.expand("%{sysarch}").."/gcc-"..rpm.expand("%{maj_ver}").."\n")
  print(rpm.expand("%{_datadir}").."/"..target.."-"..rpm.expand("%{sysarch}").."/gcc-"..rpm.expand("%{maj_ver}").."/python\n")
  print(rpm.expand("%{_libexecdir}").."/gcc/"..target.."-"..rpm.expand("%{sysarch}").."/"..rpm.expand("%{maj_ver}").."/cc1plus\n")
  print(rpm.expand("%{_mandir}").."/man1/"..target.."-"..rpm.expand("%{sysarch}").."-g++.1.gz\n")
  print("\n")
end}
%endif


%changelog
* Mon Jul 02 2018 Cristian Balint <cristian.balint@gmail.com>
- git update releases