Re: Why was handling of program_prefix changed?

[Paul Eggert]

> From: Franz Sirl <address@hidden>
> Date: Mon, 13 May 2002 23:11:18 +0200
> 
> > how can I set $target_alias for a native build now?
> >
> > AFAICS this does not happen with the suggested --host --build setup, or?
> > So, to replace the commonly used "configure nativealias" I now have to use
> > "configure --host=nativealias --build=nativealias --target=nativealias
> > --program-prefix=NONE" (I think).
> >
> > Is this also intentional? Or is this a bug? Am I overlooking something?
> >
> > BTW, it would be nice if one would be notified during configure what
> > happens to $program_prefix, like:
> >     checking for program prefix to use.. none
> 
> Well, nobody cares to answer, so I'm suggesting the appended patch,
> so one can set $target_alias again without triggering a
> cross-compile.

Sorry, I'm a bit lost.  Which of the problems mentioned above does the
following patch fix?

Also, not that I understand the problem or your fix, but it seems to
me that the test isn't quite right.  $host, $build, and $target are
backward-compatibility names.  And you can't concatenate them without
a separator, or you'll get false matches (in theory, at least).  So
shouldn't the added line be something like this instead?

  test "$host_alias,$build_alias" != "$target_alias,$target_alias" &&




>       * lib/autoconf/general.m4: Only default $program_prefix to 
> $target_alias if
>       we have some kind of crosscompile.
> 
> 
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> Content-Type: text/plain;
>   charset="iso-8859-1";
>   name="autoconf-target_alias.diff"
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> Index: lib/autoconf/general.m4
> ===================================================================
> RCS file: /cvsroot/autoconf/autoconf/lib/autoconf/general.m4,v
> retrieving revision 1.797
> diff -u -p -r1.797 general.m4
> --- lib/autoconf/general.m4   25 Apr 2002 08:54:47 -0000      1.797
> +++ lib/autoconf/general.m4   13 May 2002 21:09:00 -0000
> @@ -1640,6 +1640,7 @@ _AC_CANONICAL_SPLIT([target])
>  # The aliases save the names the user supplied, while $host etc.
>  # will get canonicalized.
>  test -n "$target_alias" &&
> +  test "$host$build$target" != "$target$target$target" &&
>    test "$program_prefix$program_suffix$program_transform_name" = \
>      NONENONEs,x,x, &&
>    program_prefix=${target_alias}-[]dnl
> 
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