Disable annobin on armv7hl

On armv7hl, enabling annobin can in some cases lead to corrupt unwind
information in generated object files:
https://bugzilla.redhat.com/show_bug.cgi?id=1951492

The root-cause of this is still unclear and until this is sorted out,
it is best to disable annobin on the architecture.

macros

@@ -317,12 +317,16 @@ print(result)
 
 # Add extra information to binary objects created by the compiler:
 # https://pagure.io/fesco/issue/1780 (accepted on 2017-10-30)
+# ...except on armv7hl, which has an issue whose root-cause isn't
+# clear yet: https://bugzilla.redhat.com/show_bug.cgi?id=1951492
 # Use "%undefine _annotated_build" to disable.
 %_annotated_build	1
 %_annobin_gcc_plugin	-specs=/usr/lib/rpm/redhat/redhat-annobin-cc1
 # The annobin plugin is not built for clang yet
 %_annobin_clang_plugin	%dnl-fplugin=/usr/lib64/clang/`clang -dumpversion`/lib/annobin.so
-%_annotation_cflags     %{?_annotated_build:%{expand:%%{_annobin_%{toolchain}_plugin}}}
+%_annotation_plugin     %{?_annotated_build:%{expand:%%{_annobin_%{toolchain}_plugin}}}
+%_annotation_cflags     %[ "%{_target_cpu}" == "armv7hl" ? "" : "%{_annotation_plugin}" ]
+
 
 # Fail linking if there are undefined symbols.  Required for proper
 # ELF symbol versioning support.  Disabled by default.

redhat-rpm-config.spec

@@ -6,7 +6,7 @@
 
 Summary: Red Hat specific rpm configuration files
 Name: redhat-rpm-config
-Version: 184
+Version: 185
 Release: 1%{?dist}
 # No version specified.
 License: GPL+
@@ -220,6 +220,9 @@ install -p -m 644 -t %{buildroot}%{_rpmluadir}/fedora/srpm forge.lua
 %{_rpmconfigdir}/macros.d/macros.kmp
 
 %changelog
+* Wed May 26 2021 Arjun Shankar <arjun@redhat.com> - 185-1
+- Disable annobin on armv7hl
+
 * Mon Apr 12 2021 David Benoit <dbenoit@redhat.com> - 184-1
 - Change 'Requires: annobin' to 'Requires: annobin-plugin-gcc'.