Missing packed relative relocation support on aarch64, s390x (#2256645)

buildflags.md

@@ -643,7 +643,8 @@ to the compiler driver `gcc`, and not directly to the link editor
   are essentially ignored due to this flag.
 * `-z pack-relative-relocs`: Use the portable `DT_RELR` scheme for
   relative relocations, resulting in reduced startup time compared to
-  legacy architecture-specific relocations.
+  legacy architecture-specific relocations.  (`-z pack-relative-relocs`
+  is currently disabled on aarch64 and s390x due to toolchain limitations.)
 * `-z defs`: Refuse to link shared objects (DSOs) with undefined symbols
   (optional, see above).
 

macros

@@ -372,8 +372,9 @@ for k,_ in pairs(stripped_flags) do print(k .. " ") end
 %_ld_as_needed		1
 %_ld_as_needed_flags	%{?_ld_as_needed:-Wl,--as-needed}
 
-%_ld_pack_relocs 1
-%_ld_pack_relocs_flags %{?_ld_pack_relocs:-Wl,-z,pack-relative-relocs}
+# aarch64 and s390x currently do not support packed relocations.
+%_ld_pack_relocs %[ "%{_arch}" == "x86_64" || "%{_arch}" == "i386" || "%{_arch}" == "ppc64le" ]
+%_ld_pack_relocs_flags %[0%{?_ld_pack_relocs} ? "-Wl,-z,pack-relative-relocs" : ""]
 
 # LTO is the default in Fedora.
 #   "%define _lto_cflags %{nil}"  to opt out

redhat-rpm-config.spec

@@ -4,7 +4,7 @@
 # 2) When making changes, increment the version (in baserelease) by 1.
 #    rpmdev-bumpspec and other tools update the macro below, which is used
 #    in Version: to get the desired effect.
-%global baserelease 273
+%global baserelease 274
 
 Summary: Red Hat specific rpm configuration files
 Name: redhat-rpm-config
@@ -256,6 +256,9 @@ install -p -m 644 -t %{buildroot}%{_rpmluadir}/fedora common.lua
 %doc buildflags.md
 
 %changelog
+* Wed Jan  3 2024 Florian Weimer <fweimer@redhat.com> - 275-1
+- Missing packed relative relocation support on aarch64, s390x (#2256645)
+
 * Tue Jan  2 2024 Florian Weimer <fweimer@redhat.com> - 273-1
 - Pack relative ELF relocations by default