# Do the necessary checks in order to enable livepatching support.
# Enable livepatching support for SLE15-SP4 onwards. It requires
# compiler support introduced there.

# Currently only supported on x86_64 and ppc64le.

# Expand to the necessary livepatching compilation flags if the macro
# livepatching is defined in the spec file.
%cflags_livepatching %{lua: if rpm.expand("%livepatchable") == "1" then \
  if rpm.expand("%_arch") == "x86_64"  then print("-fpatchable-function-entry=16,14 -fdump-ipa-clones") end \
  if rpm.expand("%_arch") == "ppc64le" then print("-fpatchable-function-entry=14,13 -fdump-ipa-clones -msplit-patch-nops") end \
end }

%tar_lp_basename %{name}-livepatch-%{version}-%{release}
%tar_lp_package_name %{tar_lp_basename}.%{_arch}.tar.xz
%clones_dest_dir %{tar_lp_basename}/%{_arch}

# Ipa-clones are files generated by gcc which logs changes made across
# functions, and we need to know such changes to build livepatches
# correctly. These files are intended to be used by the livepatch
# developers and may be retrieved by using `osc getbinaries`.
%pack_ipa_dumps \
  %if 0%{?livepatchable} && ("%{_arch}" == "x86_64" || "%{_arch}" == "ppc64le") \
    mkdir -p ipa-clones/%{clones_dest_dir} \
    find . -name "*.ipa-clones" ! -empty -exec cp -t ipa-clones/%{clones_dest_dir} --parents {} + \
    tar -cJf %{tar_lp_package_name} -C ipa-clones --owner root --group root --sort name %{tar_lp_basename} \
    cp %{tar_lp_package_name} %{_topdir}/OTHER \
  %endif

# Macro to make sure we always get the most recent version of a certain
# library.
%requires_ge_with_release() %{expand:%(t=$(echo '%*' | LC_ALL=C xargs -r rpm -q --qf 'Requires: %%{name} >= %%{epoch}:%%{version}-%%{release}\\n' | sed -e 's/ (none):/ /' -e 's/ 0:/ /' | grep -v "is not"); test -n "$t" || echo "%%{error: %%%%{requires_ge_with_release %*} does not resolve}"; echo "$t")}