bug#55741: Getting an error when running the Emacs 28.1 binary that I built from source

[Eli Zaretskii <eliz@gnu.org>]

Ping!

Could you please try the fix I posted?  I'd like to install it for
Emacs 28.2.

> Cc: 55741@debbugs.gnu.org
> Date: Thu, 02 Jun 2022 10:02:42 +0300
> From: Eli Zaretskii <eliz@gnu.org>
> 
> > Date: Tue, 31 May 2022 19:50:42 +0000
> > From: cinnaroll45 <cinnaroll45@proton.me>
> > Cc: 55741@debbugs.gnu.org
> > 
> > > The --bindir switch could be the problem: as you see from the error
> > > message, Emacs 28.1 thinks its binary is in /home/user/emacs/bin, not
> > > in /home/user/bin. So my suggestion is to reconfigure without the
> > > --bindir switch, as I don't think this is currently supported for the
> > > build with native-compilation.
> > 
> > Removing the --bindir switch solved the issue for me. Everything gets installed to the
> > expected location and the Emacs binary runs.
> > 
> > > And in addition, please show the full absolute file name of the
> > > emacs.pdmp file, so we could know in which directory it is installed on your system.
> > 
> > The location of the pdmp file was:
> > /home/user/emacs/libexec/emacs/28.1/x86_64-pc-linux-gnu/emacs.pdmp
> > 
> > > Can you show the full absolute file name of the file window-0d1b8b93-7ef4271a.eln with
> > > this installation?  In which directory is it installed by "make install"?
> > 
> > I couldn't expand the absolute location of `window-0d1b8b93-7ef4271a.eln`. The error message seemed to
> > indicate that it was looking for it under the directory where `emacs.pdmp` is, however there were no
> > directories present in that path. Just the pdmp file and three other binaries.
> > 
> > Thank you for helping out!
> 
> Thanks, but could you please test a possible fix for the original
> problem?  I'd like us to keep supporting the --bindir configure-time
> option, as we didn't intend dropping its support in Emacs 28.
> 
> So could you please re-configure Emacs 28.1 with your original
> options, including the separate --bindir, and then rebuild it with the
> patch below, install it by "make install", and see if Emacs now starts
> up correctly?  If it doesn't start (or doesn't build), please show any
> error messages you see.  TIA.
> 
> diff --git a/src/emacs.c b/src/emacs.c
> index ccc0dd2..0a90b09 100644
> --- a/src/emacs.c
> +++ b/src/emacs.c
> @@ -940,20 +940,24 @@ load_pdump (int argc, char **argv)
>    sprintf (dump_file, "%s%c%s%s",
>             path_exec, DIRECTORY_SEP, argv0_base, suffix);
>  #if !defined (NS_SELF_CONTAINED)
> -  /* Assume the Emacs binary lives in a sibling directory as set up by
> -     the default installation configuration.  */
> -  const char *go_up = "../../../../bin/";
> -  needed += (strip_suffix ? strlen (strip_suffix) : 0)
> -    - strlen (suffix) + strlen (go_up);
> -  if (exec_bufsize < needed)
> -    {
> -      xfree (emacs_executable);
> -      emacs_executable = xpalloc (NULL, &exec_bufsize, needed - exec_bufsize,
> -				  -1, 1);
> -    }
> -  sprintf (emacs_executable, "%s%c%s%s%s",
> -	   path_exec, DIRECTORY_SEP, go_up, argv0_base,
> -	   strip_suffix ? strip_suffix : "");
> +  if (!(emacs_executable && *emacs_executable))
> +    {
> +      /* If we didn't find the Emacs binary, assume that it lives in a
> +	 sibling directory as set up by the default installation
> +	 configuration.  */
> +      const char *go_up = "../../../../bin/";
> +      needed += (strip_suffix ? strlen (strip_suffix) : 0)
> +	- strlen (suffix) + strlen (go_up);
> +      if (exec_bufsize < needed)
> +	{
> +	  xfree (emacs_executable);
> +	  emacs_executable = xpalloc (NULL, &exec_bufsize,
> +				      needed - exec_bufsize, -1, 1);
> +	}
> +      sprintf (emacs_executable, "%s%c%s%s%s",
> +	       path_exec, DIRECTORY_SEP, go_up, argv0_base,
> +	       strip_suffix ? strip_suffix : "");
> +    }
>  #endif
>    result = pdumper_load (dump_file, emacs_executable);
>  
> 
> 
> 
>