GNU bug report logs - #44531
27.1; Emacs 27 fails to build from source on m68k (regression)

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Message #41 received at 44531 <at> debbugs.gnu.org (full text, mbox):

From: Stefan Monnier <monnier <at> iro.umontreal.ca>
To: John Paul Adrian Glaubitz <glaubitz <at> physik.fu-berlin.de>
Cc: 44531 <at> debbugs.gnu.org, Daniel Colascione <dancol <at> dancol.org>
Subject: Re: bug#44531: 27.1; Emacs 27 fails to build from source on m68k
 (regression)
Date: Sat, 02 Jul 2022 15:28:33 -0400

> dumping fingerprint: 7b5c59c589dc151eb1e4269bd83fbe809616b5cb9bb5c80014d5b560b391dfb6
> dump relocation out of range

This error message basically says that the relation is not a multiple of
the minimum expected alignment.  So it seems to be a direct consequence
of the 16bit alignment used on m68k combined with the following from
pdumper.el:

   [...]
   DUMP_RELOC_ALIGNMENT_BITS = 2,

   /* Minimum alignment required by dump file format.  */
   DUMP_RELOCATION_ALIGNMENT = 1 << DUMP_RELOC_ALIGNMENT_BITS,
   [...]

I can't see anything in the code which explains what this alignment
requirement is about.  You can try lowering DUMP_RELOC_ALIGNMENT_BITS
to 1 and see if that works (long shot).
Daniel?


        Stefan

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