PR ld/4424

	* config.bfd (targ_selvecs): Add bfd_elf64_alpha_vec for
	alpha/FreeBSD.  Add bfd_elf64_sparc_vec for sparc64/FreeBSD.
	Add bfd_elf32_i386_vec and bfd_efi_app_ia32_vec for i386/FreeBSD.
	(targ64_selvecs): Set for i386/FreeBSD.
	* elf-bfd.h (elf_backend_data): Add relocs_compatible.
	(_bfd_elf_default_relocs_compatible): Declare.
	(_bfd_elf_relocs_compatible): Declare.
	* elfxx-target.h (elf_backend_relocs_compatible): Define.
	(elfNN_bed): Init new relocs_compatible field.
	* elflink.c (_bfd_elf_default_relocs_compatible): New function.
	(_bfd_elf_relocs_compatible): New function.
	(elf_link_add_object_symbols): Call bed->relocs_compatible.
	* elf32-i386.c (elf_backend_relocs_compatible): Define.
	* elf64-alpha.c: Likewise.
	* elf64-sparc.c: Likewise.
	* elf64-x86-64.c: Likewise.

1 files changed, 36 insertions, 2 deletions

diff --git a/bfd/elflink.c b/bfd/elflink.c
index e2dfcefb09..ba2f54008b 100644
--- a/bfd/elflink.c
+++ b/bfd/elflink.c
@@ -3252,6 +3252,40 @@ elf_finalize_dynstr (bfd *output_bfd, struct bfd_link_info *info)
   return TRUE;
 }
 
+/* Return TRUE iff relocations for INPUT are compatible with OUTPUT.
+   The default is to only match when the INPUT and OUTPUT are exactly
+   the same target.  */
+
+bfd_boolean
+_bfd_elf_default_relocs_compatible (const bfd_target *input,
+				    const bfd_target *output)
+{
+  return input == output;
+}
+
+/* Return TRUE iff relocations for INPUT are compatible with OUTPUT.
+   This version is used when different targets for the same architecture
+   are virtually identical.  */
+
+bfd_boolean
+_bfd_elf_relocs_compatible (const bfd_target *input,
+			    const bfd_target *output)
+{
+  const struct elf_backend_data *obed, *ibed;
+
+  if (input == output)
+    return TRUE;
+
+  ibed = xvec_get_elf_backend_data (input);
+  obed = xvec_get_elf_backend_data (output);
+
+  if (ibed->arch != obed->arch)
+    return FALSE;
+
+  /* If both backends are using this function, deem them compatible.  */
+  return ibed->relocs_compatible == obed->relocs_compatible;
+}
+
 /* Add symbols from an ELF object file to the linker hash table.  */
 
 static bfd_boolean
@@ -4639,8 +4673,8 @@ elf_link_add_object_symbols (bfd *abfd, struct bfd_link_info *info)
      different format.  It probably can't be done.  */
   if (! dynamic
       && is_elf_hash_table (htab)
-      && htab->root.creator == abfd->xvec
-      && bed->check_relocs != NULL)
+      && bed->check_relocs != NULL
+      && (*bed->relocs_compatible) (abfd->xvec, htab->root.creator))
     {
       asection *o;