[Bug binutils/31543] New: windres announces non-PE targets as supported

[pali at kernel dot org]

https://sourceware.org/bugzilla/show_bug.cgi?id=31543

            Bug ID: 31543
           Summary: windres announces non-PE targets as supported
           Product: binutils
           Version: 2.39
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: binutils
          Assignee: unassigned at sourceware dot org
          Reporter: pali at kernel dot org
  Target Milestone: ---

Windres in documentation has described that it supports only COFF and RES
binary formats. Which is correct as the Windows resources are stored and used
only in Windows COFF formats.

But windres --help announces that it supports also lot of other non-PE targets,
including ELF target.

Trying to use use ELF target cause fatal error:

$ x86_64-w64-mingw32-windres --target="elf64-x86-64" -i test.rc -o test.o
x86_64-w64-mingw32-windres: can't get BFD_RELOC_RVA relocation type: cause of
error unknown

I think that this is a bug, windres should not accounce in --help and also
should not accept any non-COFF target. Also it should not announce or accept
PE/COFF target with MZ/PE executable header (EXE/DLL) as it cannot generate
resource-only DLL file. Windres can generate only COFF object file which is
without MZ/PE header.

This issue was described in gcc bugzilla comment:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108866#c7

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