From: Christian Franke <Christian.Franke@t-online.de>
To: cygwin@cygwin.com
Subject: Re: [ANNOUNCEMENT] TEST RELEASE: Cygwin 1.7.33-0.1
Date: Mon, 27 Oct 2014 06:31:00 -0000 [thread overview]
Message-ID: <544DE6C3.3080005@t-online.de> (raw)
In-Reply-To: <20141025144934.GB30397@calimero.vinschen.de>
Corinna Vinschen wrote:
> On Oct 25 13:10, Corinna Vinschen wrote:
>> On Oct 24 23:17, Denis Excoffier wrote:
>>> 2014-10-24 22:16, Christian Franke wrote:
>>>> Another possible solution:
>>>> Check for e.g. CYGWIN_DLLPATH environment variable before calling SetDllDirectory().
>>>>
>>>> If unset or empty, call SetDllDirectory("X:\path_to_cygwin\bin");
>>>> else if set to ".", do nothing.
>>>> else call SetDllDirectory(CYGWIN_DLLPATH);
>>>>
>>>> The above 'make check' should then work again as 'CYGWIN_DLLPATH=. make check'.
>>> I can buy this. Setting 'export CYGWIN_DLLPATH := .' at the beginning of the Makefile will
>>> do the job.
>>>
>>>> Possible enhancement: If AddDllDirectory() is available (>= Win8), accept a real search path in CYGWIN_DLLPATH.
>>> Also perhaps you can use yet another subitem in the CYGWIN environment variable?
>> If AddDllDirectory works without much hassle, which I have to test first,
>> why introduce CYGWIN_DLLPATH or another CYGWIN item?
>>
>> LD_LIBRARY_PATH would be the one we want then, wouldn't it?
> One really big problem with AddDllDirectory is this: While you can add
> multiple directories to the search path, the order in which these
> directories are added does not specify a search order. In fact, the
> order in which the paths are searched is unspecified per MSDN.
>
> In Denis example that means, if we add /usr/bin and /my/dir/bin to the
> DLL search path, Denis case works or it doesn't, and we never know when
> it will work and when it won't, and we have no way to influence this.
> Oh boy.
>
> Apart from SetDllDirectory and AddDllDirectory, what about this very
> simple solution in Cygwin:
>
> - Don't call SetDllDirectory at all, thus "." is kept in the search
> path.
>
> - In execve, when creating the Windows environment for the child process,
> check if $PATH is empty. If so, set $PATH to /bin for the child.
> Or, check if /bin is in $PATH, if not, add it.
>
> That would catch both problems, backward compatibility with Denis
> scenario, as well as the PATH setting in postfix.
OK for me. For postfix, the '$PATH is empty' check would be sufficient.
Christian
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next prev parent reply other threads:[~2014-10-27 6:31 UTC|newest]
Thread overview: 58+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-10-22 9:42 Corinna Vinschen
2014-10-22 13:35 ` Habermann, Dave (DA)
2014-10-22 13:54 ` Corinna Vinschen
2014-10-22 14:48 ` Corinna Vinschen
2014-10-22 16:44 ` Achim Gratz
2014-10-23 18:01 ` Achim Gratz
2014-10-24 9:56 ` Corinna Vinschen
2014-10-27 18:35 ` Habermann, Dave (DA)
2014-10-27 21:26 ` Corinna Vinschen
2014-10-28 13:42 ` Habermann, Dave (DA)
2014-10-28 14:20 ` Corinna Vinschen
2014-10-28 14:58 ` Eric Blake
2014-10-28 15:16 ` Corinna Vinschen
2014-10-28 17:07 ` Habermann, Dave (DA)
2014-10-28 20:22 ` Habermann, Dave (DA)
2014-10-29 10:21 ` Corinna Vinschen
2014-10-30 17:02 ` David Rothenberger
2014-10-30 17:22 ` Corinna Vinschen
2014-10-30 23:50 ` Andrey Repin
2014-10-31 12:26 ` Habermann, David (D)
2014-10-29 0:05 ` Andrey Repin
2014-10-27 21:35 ` Andrey Repin
2014-10-23 2:57 ` Tom Schutter
2014-10-23 15:44 ` Corinna Vinschen
[not found] ` <5449F281.3080701@cisra.canon.com.au>
2014-10-24 6:35 ` Luke Kendall
2014-10-24 10:37 ` Corinna Vinschen
2014-10-26 22:28 ` Luke Kendall
2014-10-27 12:39 ` Corinna Vinschen
2014-10-27 23:13 ` Luke Kendall
2014-10-23 3:00 ` Tom Schutter
2014-10-23 6:14 ` Corinna Vinschen
2014-10-23 18:00 ` Achim Gratz
2014-10-23 22:05 ` Andrey Repin
2014-10-23 18:06 ` Denis Excoffier
2014-10-24 11:02 ` Corinna Vinschen
2014-10-24 18:41 ` Denis Excoffier
2014-10-24 19:36 ` Corinna Vinschen
2014-10-24 20:16 ` Christian Franke
2014-10-24 20:45 ` Corinna Vinschen
2014-10-24 21:17 ` Denis Excoffier
2014-10-25 11:10 ` Corinna Vinschen
2014-10-25 14:49 ` Corinna Vinschen
2014-10-25 17:29 ` Denis Excoffier
2014-10-25 18:15 ` Corinna Vinschen
2014-10-27 6:31 ` Christian Franke [this message]
2014-10-27 11:37 ` Corinna Vinschen
2014-10-27 13:35 ` Andrey Repin
2014-10-27 14:09 ` Corinna Vinschen
2014-10-24 16:35 ` Andrey Repin
2014-10-24 17:28 ` Keith Christian
2014-10-24 17:57 ` Eric Blake
2014-10-26 3:11 ` Keith Christian
2014-10-24 18:16 ` Thomas Wolff
2014-10-24 19:17 ` Corinna Vinschen
2014-10-22 12:07 Angelo Graziosi
2014-10-22 12:37 ` Corinna Vinschen
2014-10-22 13:27 Angelo Graziosi
2014-10-22 13:41 ` Corinna Vinschen
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