RISC-V: PR29823, defined the missing elf_backend_obj_attrs_handle_unknown.

bfd/
	PR 29823
	* elfnn-riscv.c (riscv_elf_obj_attrs_handle_unknown): New function.
	(elf_backend_obj_attrs_handle_unknown): Defined to
	riscv_elf_obj_attrs_handle_unknown.

diff --git a/bfd/elfnn-riscv.c b/bfd/elfnn-riscv.c
index 95abf2d10e2a3fd068b0311402b3d2f4acebb37c..604f6de451103e51c2ca28ac1a7569ddb54ba8dc 100644 (file)
--- a/bfd/elfnn-riscv.c
+++ b/bfd/elfnn-riscv.c
@@ -4206,6 +4206,18 @@ _bfd_riscv_elf_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info)
   return false;
 }
 
+/* Ignore and report warning for the unknwon elf attribute.  */
+
+static bool
+riscv_elf_obj_attrs_handle_unknown (bfd *abfd, int tag)
+{
+  _bfd_error_handler
+    /* xgettext:c-format */
+    (_("warning: %pB: unknown RISCV ABI object attribute %d"),
+     abfd, tag);
+  return true;
+}
+
 /* A second format for recording PC-relative hi relocations.  This stores the
    information required to relax them to GP-relative addresses.  */
 
@@ -5708,5 +5720,6 @@ riscv_elf_merge_symbol_attribute (struct elf_link_hash_entry *h,
 #define elf_backend_obj_attrs_section_type     SHT_RISCV_ATTRIBUTES
 #undef  elf_backend_obj_attrs_section
 #define elf_backend_obj_attrs_section          RISCV_ATTRIBUTES_SECTION_NAME
+#define elf_backend_obj_attrs_handle_unknown   riscv_elf_obj_attrs_handle_unknown
 
 #include "elfNN-target.h"