From: "Óscar Fuentes" <ofv@wanadoo.es>
To: Eli Zaretskii <eliz@gnu.org>
Cc: 19111@debbugs.gnu.org
Subject: bug#19111: 25.0.50; 32 bits temacs.exe is linked with wrong image-base when built on 64 bit Windows host
Date: Thu, 20 Nov 2014 19:30:37 +0100 [thread overview]
Message-ID: <87389dragi.fsf@wanadoo.es> (raw)
In-Reply-To: <83mw7l6bjc.fsf@gnu.org> (Eli Zaretskii's message of "Thu, 20 Nov 2014 19:12:55 +0200")
Eli Zaretskii <eliz@gnu.org> writes:
>> We are using $MSYSTEM to special-case MinGW(-w64). $MSYSTEM is MINGW32
>> when using the 32 bit toolset and MINGW64 when using the 64 bit toolset.
>> That's true for MSYS2/MinGW-w64. I'm not sure if MSYS sets $MSYSTEM to
>> MINGW or MINGW32, but any of it should be ok with the patch.
>>
>> The -m32 switch is actively discouraged by the MinGW-w64 community and
>> the official builds does not support it.
>>
>> Does this answer your questions?
>
> Sorry, it doesn't. You say that $MSYSTEM is set to either MINGW32 or
> MINGW64, depending on whether 32-bit or 64-bit toolset is used. But
> how does MSYS2 know which toolset you are going to use to compile a
> program? How do you communicate that to MSYS2?
It is set automatically by the .bat file that starts the MSYS2 shell.
There is a .bat that sets $MSYSTEM, paths, etc for MINGW32, other for
MINGW64 and other for MSYS.
In the end, the user must ensure that $MSYSTEM matches the toolset he is
going to use. This is nothing new. The Emacs build fails if $MSYSTEM is
not correctly set, for MinGW(-w64) builds.
> In any case, what I suggest to do is correct the triplet,
> automatically, after uname guesses it, if we find that it is wrong for
> "the toolset about to be used", whatever that means.
How do we know that the triplet is wrong? The easy way is to inspect
$MSYSTEM, but if that's the solution then we could stop using the
triplet altogether and use $MSYSTEM instead (which is what my patch
does.)
Another solution is to get the --host/--build triplet from `gcc -v' (use
the `--target=...' part. I don't know how it is supposed to deal with
the case of the user setting those parameters explicitly, although I
can't think of a valid reason for setting --host/--build to something
different from the `gcc -v' --target, since Emacs does not support
cross-compiling.
I understand your concern: `configure' can use the triplet anywhere and
hence it is important that it is correct.
next prev parent reply other threads:[~2014-11-20 18:30 UTC|newest]
Thread overview: 61+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-11-19 20:27 bug#19111: 25.0.50; 32 bits temacs.exe is linked with wrong image-base when built on 64 bit Windows host Óscar Fuentes
2014-11-19 20:40 ` Eli Zaretskii
2014-11-19 21:27 ` Óscar Fuentes
2014-11-19 21:50 ` Óscar Fuentes
2014-11-19 22:01 ` Óscar Fuentes
2014-11-20 3:45 ` Eli Zaretskii
2014-11-20 3:43 ` Eli Zaretskii
2014-11-20 3:41 ` Eli Zaretskii
2014-11-20 4:10 ` Óscar Fuentes
2014-11-20 16:05 ` Eli Zaretskii
2014-11-20 16:23 ` Óscar Fuentes
2014-11-20 17:12 ` Eli Zaretskii
2014-11-20 18:30 ` Óscar Fuentes [this message]
2014-11-20 19:12 ` Dani Moncayo
2014-11-20 21:03 ` Eli Zaretskii
2014-11-21 0:07 ` Óscar Fuentes
2014-11-21 8:28 ` Eli Zaretskii
2014-11-21 14:15 ` Óscar Fuentes
2014-11-21 15:03 ` Eli Zaretskii
2014-11-21 16:06 ` Dani Moncayo
2014-11-21 17:02 ` Glenn Morris
2014-11-21 17:17 ` Dani Moncayo
2014-11-21 17:21 ` Glenn Morris
2014-11-21 18:12 ` Óscar Fuentes
2014-11-21 17:56 ` Dani Moncayo
2014-11-21 18:01 ` Dani Moncayo
2014-11-21 18:21 ` Óscar Fuentes
2014-11-21 18:34 ` Dani Moncayo
2014-11-21 18:41 ` Óscar Fuentes
2014-11-21 22:54 ` Óscar Fuentes
2014-11-22 1:05 ` Glenn Morris
2014-11-22 1:13 ` Óscar Fuentes
2014-11-25 2:38 ` Óscar Fuentes
2014-11-25 20:26 ` Dani Moncayo
2014-11-25 20:52 ` Óscar Fuentes
2014-11-25 21:13 ` Dani Moncayo
2014-11-25 23:41 ` Óscar Fuentes
2014-11-25 23:46 ` Dani Moncayo
2014-11-26 0:00 ` Óscar Fuentes
2014-11-26 3:49 ` Eli Zaretskii
2014-11-26 20:05 ` Dani Moncayo
2014-11-29 10:07 ` Dani Moncayo
2014-11-29 10:32 ` Eli Zaretskii
2014-11-29 18:22 ` Dani Moncayo
2014-11-29 18:31 ` Eli Zaretskii
2014-11-29 19:25 ` Dani Moncayo
2014-11-29 20:23 ` Eli Zaretskii
2014-11-29 20:37 ` Dani Moncayo
2014-11-29 20:52 ` Eli Zaretskii
2014-11-29 16:24 ` Óscar Fuentes
2014-11-29 18:37 ` Dani Moncayo
2014-11-29 18:49 ` Eli Zaretskii
2014-11-29 19:23 ` Dani Moncayo
2014-11-29 19:33 ` Achim Gratz
2014-11-29 19:41 ` Andreas Schwab
2014-11-29 19:45 ` Óscar Fuentes
2014-11-29 20:21 ` Eli Zaretskii
2014-11-25 23:42 ` Dani Moncayo
2014-11-22 8:46 ` Dani Moncayo
2014-11-22 10:16 ` Eli Zaretskii
2014-11-22 15:11 ` Óscar Fuentes
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