From 3fa891a80c5faba051afb0e6607f6b347bf61f9a Mon Sep 17 00:00:00 2001
From: Alan Modra <amodra@gmail.com>
Date: Tue, 26 Aug 2025 19:19:44 +0930
Subject: objcopy "Unable to recognise the format of the input file"

This bogus error comes up when trying something like
objcopy -O binary .../binutils/testsuite/binutils-all/tek2.obj xxx

This is an annoying message, as HJ said in
https://sourceware.org/pipermail/binutils/2002-August/021354.html
and removed it for some cases, eg. I can make it go away by specifying
-I tekhex.  The message is also untrue, as objcopy does in fact know
the format of the input file.

I think the message should be limited to ELF input files that are
being handled by the elf64-little, elf64-big, elf32-little or
elf32-big targets, due to libbfd being compiled with limited target
support.  I'm also changing the message a litle.

	* objcopy.c (copy_object): Change "Unable to recognise format"
	message to "Unable to recognise architecture" and only report
	this error for ELF objects lacking their proper target support.
	* testsuite/binutils-all/x86-64/x86-64.exp: Update to suit.
---
 binutils/objcopy.c                                | 21 ++++++++++++---------
 binutils/testsuite/binutils-all/x86-64/x86-64.exp |  2 +-
 2 files changed, 13 insertions(+), 10 deletions(-)

diff --git a/binutils/objcopy.c b/binutils/objcopy.c
index c6fc508..a3259f9 100644
--- a/binutils/objcopy.c
+++ b/binutils/objcopy.c
@@ -2804,17 +2804,20 @@ copy_object (bfd *ibfd, bfd *obfd, const bfd_arch_info_type *input_arch)
       iarch = bed->arch;
       imach = 0;
     }
+  if (iarch == bfd_arch_unknown
+      && bfd_get_flavour (ibfd) == bfd_target_elf_flavour
+      && ibfd->target_defaulted)
+    {
+      non_fatal (_("Unable to recognise the architecture of the input file `%s'"),
+		 bfd_get_archive_filename (ibfd));
+      return false;
+    }
   if (!bfd_set_arch_mach (obfd, iarch, imach)
-      && (ibfd->target_defaulted
-	  || bfd_get_arch (ibfd) != bfd_get_arch (obfd)))
+      && iarch != bfd_arch_unknown)
     {
-      if (bfd_get_arch (ibfd) == bfd_arch_unknown)
-	non_fatal (_("Unable to recognise the format of the input file `%s'"),
-		   bfd_get_archive_filename (ibfd));
-      else
-	non_fatal (_("Output file cannot represent architecture `%s'"),
-		   bfd_printable_arch_mach (bfd_get_arch (ibfd),
-					    bfd_get_mach (ibfd)));
+      non_fatal (_("Output file cannot represent architecture `%s'"),
+		 bfd_printable_arch_mach (bfd_get_arch (ibfd),
+					  bfd_get_mach (ibfd)));
       return false;
     }
 
diff --git a/binutils/testsuite/binutils-all/x86-64/x86-64.exp b/binutils/testsuite/binutils-all/x86-64/x86-64.exp
index 6d1b308..3c98b03 100644
--- a/binutils/testsuite/binutils-all/x86-64/x86-64.exp
+++ b/binutils/testsuite/binutils-all/x86-64/x86-64.exp
@@ -295,7 +295,7 @@ proc run_pr33230_test { testname obj strip_flags run_readelf } {
 	    fail "$testname (${obj}.strip)"
 	    return
 	}
-    } elseif { ![regexp "Unable to recognise the format" $got] } then {
+    } elseif { ![regexp "Unable to recognise the architecture" $got] } then {
 	send_log "$got\n"
 	verbose "$got" 1
 	fail "$testname"
-- 
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