%global gcc_toolset_base /opt/openEuler/gcc-toolset-7
%global gcc_toolset_root %{gcc_toolset_base}/root
%global debug_package %{nil}

%ifarch x86_64
%global glibc_tar         %{SOURCE0}
%global glibc_common_tar  %{SOURCE1}
%global glibc_devel_tar   %{SOURCE2}
%global glibc_headers_tar %{SOURCE3}
%global arch_asm_dir      x86_64-linux-gnu
%endif

%ifarch aarch64
%global glibc_tar         %{SOURCE4}
%global glibc_common_tar  %{SOURCE5}
%global glibc_devel_tar   %{SOURCE6}
%global glibc_headers_tar %{SOURCE7}
%global arch_asm_dir      aarch64-linux-gnu
%endif

Name:           ai-builder-glibc
Version:        2.17
Release:        1%{?dist}
Summary:        Extract EL7 glibc runtime and development files for gcc-toolset-7 sysroot
License:        LGPLv2+ and LGPLv2+ with exceptions and GPLv2+
URL:            https://www.gnu.org/software/libc/

# Put these tar.gz files into rpmbuild SOURCES.  They are RPM payloads already
# converted to archive form, and the package build selects the matching set by
# target architecture.
Source0:        glibc-2.17-326.el7_9.x86_64.tar.gz
Source1:        glibc-common-2.17-317.el7.x86_64.tar.gz
Source2:        glibc-devel-2.17-317.el7.x86_64.tar.gz
Source3:        glibc-headers-2.17-317.el7.x86_64.tar.gz
Source4:        glibc-2.17-326.el7_9.aarch64.tar.gz
Source5:        glibc-common-2.17-317.el7.aarch64.tar.gz
Source6:        glibc-devel-2.17-317.el7.aarch64.tar.gz
Source7:        glibc-headers-2.17-317.el7.aarch64.tar.gz

ExclusiveArch:  x86_64 aarch64
BuildRequires:  gzip
BuildRequires:  tar

# The extracted EL7 glibc is private to %%{gcc_toolset_root}.  Do not let RPM
# dependency generators advertise these files as system glibc providers.
AutoReqProv:    no
Provides:       bundled(glibc) = %{version}

%description
This package extracts glibc, glibc-common, glibc-devel and glibc-headers binary
RPM payload archives into the private gcc-toolset-7 sysroot layout used on openEuler 24.03.
It is intended to provide the libc runtime, crt objects, linker scripts and
headers needed by the devtoolset-7 GCC build flow.

%prep
rm -rf extract-root
mkdir -p extract-root

cd extract-root
for tar_file in \
    "%{glibc_tar}" \
    "%{glibc_common_tar}" \
    "%{glibc_devel_tar}" \
    "%{glibc_headers_tar}"
do
    tar --no-same-owner -xzf "${tar_file}"
done

%build
# Nothing to build.  This package only repackages glibc files into a private
# gcc-toolset-7 sysroot.

%install
rm -rf %{buildroot}

install -d -m 0755 %{buildroot}%{gcc_toolset_root}
cp -a extract-root/. %{buildroot}%{gcc_toolset_root}/

# glibc-devel/glibc-headers depend on kernel headers.  Keep the same behavior
# as build-devtoolset7.sh: use the openEuler 24.03 system kernel headers from
# outside the private sysroot.  Use relative symlink targets to avoid RPM
# absolute-symlink warnings while resolving to the same host headers.
install -d -m 0755 %{buildroot}%{gcc_toolset_root}/usr/include
rm -rf \
    %{buildroot}%{gcc_toolset_root}/usr/include/linux \
    %{buildroot}%{gcc_toolset_root}/usr/include/asm-generic \
    %{buildroot}%{gcc_toolset_root}/usr/include/asm
ln -sfn ../../../../../../usr/include/linux \
    %{buildroot}%{gcc_toolset_root}/usr/include/linux
ln -sfn ../../../../../../usr/include/asm-generic \
    %{buildroot}%{gcc_toolset_root}/usr/include/asm-generic
ln -sfn ../../../../../../usr/include/asm \
    %{buildroot}%{gcc_toolset_root}/usr/include/asm

# Some GCC probes and older build scripts look for the Debian/Ubuntu-style
# architecture include directory.  Point it at the rpm-style asm headers.
install -d -m 0755 %{buildroot}%{gcc_toolset_root}/usr/include/%{arch_asm_dir}
rm -rf %{buildroot}%{gcc_toolset_root}/usr/include/%{arch_asm_dir}/asm
ln -sfn ../../../../../../../usr/include/asm \
    %{buildroot}%{gcc_toolset_root}/usr/include/%{arch_asm_dir}/asm

# RPM payloads may contain absolute symlinks such as /lib64/libc-2.17.so.
# Inside the private sysroot they should resolve to %%{gcc_toolset_root}/lib64.
find %{buildroot}%{gcc_toolset_root} -type l | while read link_path
do
    link_target="$(readlink "${link_path}")"
    case "${link_target}" in
        /lib*|/usr/lib*)
            ln -sfn "%{gcc_toolset_root}${link_target}" "${link_path}"
            ;;
    esac
done

# Convenience environment file matching the new openEuler installation prefix.
cat > %{buildroot}%{gcc_toolset_base}/enable <<'EOF'
export PATH=/opt/openEuler/gcc-toolset-7/root/usr/bin:${PATH}
export CC=/opt/openEuler/gcc-toolset-7/root/usr/bin/gcc
export CXX=/opt/openEuler/gcc-toolset-7/root/usr/bin/g++
EOF

%files
%dir /opt/openEuler
%dir %{gcc_toolset_base}
%{gcc_toolset_base}/enable
%{gcc_toolset_root}

%changelog
* Tue Jun 09 2026 Example Maintainer <example@example.com> - 2.17-1
- Switch sources from RPM files to converted tar.gz payload archives

* Thu May 28 2026 Example Maintainer <example@example.com> - 2.17-1
- Extract EL7 glibc RPM payloads into gcc-toolset-7 sysroot for openEuler 24.03