diff --git a/brp-llvm-compile-lto-elf b/brp-llvm-compile-lto-elf
new file mode 100644
index 0000000000000000000000000000000000000000..9ef4d40272ba2bdc00aac51978453aa2d98bb0a5
--- /dev/null
+++ b/brp-llvm-compile-lto-elf
@@ -0,0 +1,57 @@
+#!/usr/bin/bash -eu
+# From fedora:
+# https://src.fedoraproject.org/rpms/redhat-rpm-config
+# version 287
+
+
+if [ -z "$RPM_BUILD_ROOT" ] || [ "$RPM_BUILD_ROOT" = "/" ]; then
+	exit 0
+fi
+
+CLANG_FLAGS=$@
+NCPUS=${RPM_BUILD_NCPUS:-1}
+
+check_convert_bitcode () {
+  local file_name=$(realpath ${1})
+  local file_type=$(file ${file_name})
+
+  shift
+  CLANG_FLAGS="$@"
+
+  if [[ "${file_type}" == *"LLVM IR bitcode"* ]]; then
+    # Check the output of llvm-strings for the command line, which is in the LLVM bitcode because
+    # we pass -frecord-gcc-switches.
+    # Check for a line that has "-flto" after (or without) "-fno-lto".
+    llvm-strings ${file_name} | while read line ; do
+      flto=$(echo $line   | grep -o -b -e -flto     | tail -n 1 | cut -d : -f 1)
+      fnolto=$(echo $line | grep -o -b -e -fno-lto  | tail -n 1 | cut -d : -f 1)
+
+      if test -n "$flto" && { test -z "$fnolto" || test "$flto" -gt "$fnolto"; } ; then
+        echo "Compiling LLVM bitcode file ${file_name}."
+        clang ${CLANG_FLAGS} -fno-lto -Wno-unused-command-line-argument \
+          -x ir ${file_name} -c -o ${file_name}
+        break
+      fi
+      done
+  elif [[ "${file_type}" == *"current ar archive"* ]]; then
+    echo "Unpacking ar archive ${file_name} to check for LLVM bitcode components."
+    # create archive stage for objects
+    local archive_stage=$(mktemp -d)
+    local archive=${file_name}
+    pushd ${archive_stage}
+    ar x ${archive}
+    for archived_file in $(find -not -type d); do
+      check_convert_bitcode ${archived_file} ${CLANG_FLAGS}
+      echo "Repacking ${archived_file} into ${archive}."
+      ar r ${archive} ${archived_file}
+    done
+    popd
+  fi
+}
+
+echo "Checking for LLVM bitcode artifacts"
+export -f check_convert_bitcode
+# Deduplicate by device:inode to avoid processing hardlinks in parallel.
+find "$RPM_BUILD_ROOT" -type f -name "*.[ao]" -printf "%D:%i %p\n" | \
+  awk '!seen[$1]++' | cut -d" " -f2- | \
+  xargs -d"\n" -r -n1 -P$NCPUS sh -c "check_convert_bitcode \$@ $CLANG_FLAGS" ARG0
diff --git a/macros b/macros
index 6ff7d6ac556fa98535162646bff273c5dfb8efc9..d3c404e71a4cb2404e88e23b5ad7d913332df8ad 100644
--- a/macros
+++ b/macros
@@ -260,6 +260,7 @@ for k,_ in pairs(stripped_flags) do print(k .. " ") end
 %__brp_remove_la_files /usr/lib/rpm/brp-remove-la-files
 %__brp_remove_info_dir /usr/lib/rpm/brp-remove-info-dir
 %__brp_clean_perl_files /usr/lib/rpm/brp-clean-perl-files
+%__brp_llvm_compile_lto_elf /usr/lib/rpm/brp-llvm-compile-lto-elf %{build_cflags} %{build_ldflags}
 
 %__os_install_post    \
     %{?__brp_ldconfig} \
@@ -279,6 +280,7 @@ for k,_ in pairs(stripped_flags) do print(k .. " ") end
 %{nil}
 
 %__spec_install_post\
+    %[ "%{toolchain}" == "clang" ? "%{?__brp_llvm_compile_lto_elf}" : "%{nil}" ] \
     %{?__debug_package:%{__debug_install_post}}\
     %{?@VENDOR@_delete_rpath:%{?__brp_chrpath}} \
     %{__arch_install_post}\
diff --git a/openEuler-rpm-config.spec b/openEuler-rpm-config.spec
index b721b528305b98c1a0d68eb1fe0c20eeb143ec12..beb211ced4cee207b1a04e14edee851313b10874 100644
--- a/openEuler-rpm-config.spec
+++ b/openEuler-rpm-config.spec
@@ -3,7 +3,7 @@
 
 Name:		%{vendor}-rpm-config
 Version:	31
-Release:	7
+Release:	8
 License:	GPL+
 Summary:	specific rpm configuration files
 URL:		https://gitee.com/src-openeuler/openEuler-rpm-config
@@ -56,6 +56,7 @@ Source704: brp-remove-info-dir
 Source705: brp-check-elf-files
 Source706: brp-strip-lto
 Source707: brp-clean-perl-files
+Source708: brp-llvm-compile-lto-elf
 
 # Convenience lua functions
 Source800: common.lua
@@ -113,6 +114,10 @@ Requires: %{_bindir}/xargs
 Requires: %{_bindir}/chrpath
 Requires: %{_bindir}/eu-elfclassify
 
+# for brp-llvm-compile-lto-elf
+Requires: (llvm if clang)
+Requires: (gawk if clang)
+
 Requires: coreutils
 
 # -fstack-clash-protection and -fcf-protection require GCC 8.
@@ -179,6 +184,10 @@ sed -i "s/@VENDOR@/%{vendor}/g" `grep "@VENDOR@" -rl %{buildroot}%{_rpmconfigdir
 %{rpmvdir}/find-requires.ksyms
 
 %changelog
+* Sat Nov 16 2024 Funda Wang <fundawang@yeah.net> - 31-8
+- compile LLVM IR bitcode in object files or static libraries
+  into ELF object code for clang < 18
+
 * Sat Oct 26 2024 Funda Wang <fundawang@yeah.net> - 31-7
 - remove useless perl .packlist, empty .bs files and
   wrongly created perllocal.pod from buildroot