import redhat-rpm-config-199-1.el9

SOURCES/brp-llvm-compile-lto-elf

@@ -0,0 +1,52 @@
+#!/usr/bin/bash -eu
+
+
+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} ${archived_file}
+    done
+    popd
+  fi
+}
+
+echo "Checking for LLVM bitcode artifacts"
+export -f check_convert_bitcode
+find "$RPM_BUILD_ROOT" -type f -name "*.[ao]" -print0 | \
+  xargs -0 -r -n1 -P$NCPUS sh -c "check_convert_bitcode \$@ $CLANG_FLAGS" ARG0

SOURCES/macros

@@ -233,6 +233,8 @@ print(result)
 # __brp_mangle_shebangs_exclude_from_file - file from which to get files to ignore
 %__brp_mangle_shebangs /usr/lib/rpm/redhat/brp-mangle-shebangs %{?__brp_mangle_shebangs_exclude:--shebangs "%{?__brp_mangle_shebangs_exclude}"} %{?__brp_mangle_shebangs_exclude_file:--shebangs-from "%{__brp_mangle_shebangs_exclude_file}"} %{?__brp_mangle_shebangs_exclude_from:--files "%{?__brp_mangle_shebangs_exclude_from}"} %{?__brp_mangle_shebangs_exclude_from_file:--files-from "%{__brp_mangle_shebangs_exclude_from_file}"}
 
+%__brp_llvm_compile_lto_elf /usr/lib/rpm/redhat/brp-llvm-compile-lto-elf %{build_cflags} %{build_ldflags}
+
 %__os_install_post    \
     %{?__brp_ldconfig} \
     %{?__brp_compress} \
@@ -249,6 +251,7 @@ print(result)
 %{nil}
 
 %__spec_install_post\
+    %[ "%{toolchain}" == "clang" ? "%{?__brp_llvm_compile_lto_elf}" : "%{nil}" ] \
     %{?__debug_package:%{__debug_install_post}}\
     %{__arch_install_post}\
     %{__os_install_post}\

SPECS/redhat-rpm-config.spec

@@ -6,7 +6,7 @@
 
 Summary: Red Hat specific rpm configuration files
 Name: redhat-rpm-config
-Version: 196
+Version: 199
 Release: 1%{?dist}
 # No version specified.
 License: GPL+
@@ -59,6 +59,9 @@ Source202: brp-python-bytecompile
 # https://github.com/fedora-python/marshalparser
 Source203: brp-fix-pyc-reproducibility
 
+# for converting llvm LTO bitcode objects into ELF
+Source204: brp-llvm-compile-lto-elf
+
 # Dependency generator scripts (deprecated)
 Source300: find-provides
 Source304: find-requires
@@ -103,6 +106,7 @@ Requires: perl-srpm-macros
 Requires: python-srpm-macros >= 3-46
 Requires: qt5-srpm-macros
 Requires: rust-srpm-macros
+Requires: pyproject-srpm-macros
 
 %if ! 0%{?rhel}
 Requires: fpc-srpm-macros
@@ -166,16 +170,49 @@ install -p -m 644 -t %{buildroot}%{_rpmluadir}/fedora/srpm forge.lua
 
 # This trigger is used to decide which version of the annobin plugin for gcc
 # should be used.  See comments in the script for full details.
+#
+# Note: for RHEL the rpm containing the annobin built plugin is called
+# "annobin", whereas in Fedora it is called "annobin-plugin-gcc".  This is
+# for historical reasons and will change with the introduction of RHEL-10.
+#
+# Note - whilst "gcc-plugin-annobin" requires "gcc" and hence in theory we
+# do not need to trigger on "gcc", the redhat-annobin-plugin-select.sh
+# script invokes gcc to determine the version of the gcc plugin, and this
+# can be significant.
+#
+# For example, suppose that version N of gcc is installed and that annobin
+# version A (built by gcc version N) is also installed.  Then a new version
+# of gcc is released.  If the rpms are updated in this order:
+#   gcc-plugin-annobin
+#   gcc
+# then when the trigger for gcc-plugin-annobin is run, the script will see
+# (the not yet updated) gcc is currently version N, which matches the current
+# annobin plugin A, so no changes are necessary.  Then gcc is updated and,
+# if the trigger below did not include "gcc", the script would not run again
+# and so now you would have an out of date version of the annobin plugin.
+#
+# Alternatively imagine installing gcc and annobin for the first time.
+# If the installation order is:
+#    gcc
+#    annobin-plugin-gcc
+#    gcc-plugin-annobin
+# then the installation of gcc will not cause the gcc-plugin-annobin to be
+# selected, since it does not exist yet.  Then annobin-plugin-gcc is installed
+# and since it is the only plugin, it will be selected.  Then
+# gcc-plugin-annobin is installed, and if the trigger below was not set to
+# run on gcc-plugin-annobin, it would pass unnoticed.
+#
+# Hence it is necessary to trigger on both gcc and gcc-plugin-annobin.
 
-%triggerin -- annobin gcc-plugin-annobin
+%triggerin -- annobin gcc-plugin-annobin gcc
 %{rrcdir}/redhat-annobin-plugin-select.sh
 %end
 
-# We also trigger when annobin is uninstalled.  This allows us to switch
+# We also trigger when an annobin plugin is uninstalled.  This allows us to switch
-# over to the gcc generated version of the plugin.  It does not matter if
+# over to the other version of the plugin.  It does not matter if
 # gcc is uninstalled, since if that happens the plugin cannot be used.
 
-%triggerpostun -- annobin
+%triggerpostun -- annobin gcc-plugin-annobin
 %{rrcdir}/redhat-annobin-plugin-select.sh
 %end
 
@@ -213,6 +250,16 @@ install -p -m 644 -t %{buildroot}%{_rpmluadir}/fedora/srpm forge.lua
 %doc buildflags.md
 
 %changelog
+* Mon Feb 13 2023 Miro Hrončok <mhroncok@redhat.com> - 199-1
+- Add pyproject-srpm-macros to the default buildroot
+- Related: rhbz#2168193
+
+* Tue Feb 07 2023 Nick Clifton  <nickc@redhat.com> - 198-1
+- Fix triggers for the installation and removal of gcc-plugin-annobin.  (#2167713)
+
+* Wed Sep 21 2022 Timm Bäder <tbaeder@redhat.com> - 197-1
+- Ship brp-llvm-compile-lto-elf script
+
 * Mon Jun 27 2022 Nick Clifton  <nickc@redhat.com> - 196-1
 - Pass "--remove section .gnu.build.attributes" to the find-debuginfo script.
 - Resolves: rhbz#2099613