From: Daniel Santos <daniel.santos@pobox.com>
To: cygwin@cygwin.com
Subject: Re: Strange errors running gcc tests on Cygwin
Date: Tue, 07 Mar 2017 01:59:00 -0000 [thread overview]
Message-ID: <9b872914-d9cf-378e-6eec-96c175a61ffe@pobox.com> (raw)
In-Reply-To: <583230d9-f45c-aaa0-ed77-5c50863406f5@gmail.com>
On 03/05/2017 05:08 AM, David Billinghurst wrote:
> No.
>
> LD_LIBRARY_PATH is used by dlopen ().
>
> PATH is one of the locations searched by Windows when starting
> applications, see https://msdn.microsoft.com/en-us/library/7d83bc18.aspx
Thank you for this clarification. So load-time dlls are resolved (in
ntdll.exe or some such) using PATH and run-time dlls loaded with
dlopen() are resolved with LD_LIBRARY_PATH? I'm obviously not intimate
with Cygwin's architecture, but I'm guessing that explicitly using
LoadLibrary is still going to use PATH.
So it seems that libgcc on Cygwin is called cyggcc_s-seh-1.dll on lives
in /usr/bin. This makes the gcc test harness's attempt to switch
between host and target compilers problematic because we can't remove
/usr/bin from the PATH. We can can prepend the built-tree's path, but
it's still a bit unsettling that, if something goes wrong with the
build-tree, we can still end up loading the installed libgcc instead of
failing. Still, it will be better than the current situation.
Thank you for your help with this.
Daniel
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next prev parent reply other threads:[~2017-03-07 1:59 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-03-04 5:44 Daniel Santos
2017-03-04 11:27 ` Tim Prince via cygwin
2017-03-05 2:49 ` Daniel Santos
2017-03-05 3:49 ` JonY
2017-03-05 4:20 ` Daniel Santos
2017-03-05 7:23 ` Daniel Santos
2017-03-05 7:32 ` Daniel Santos
2017-03-05 11:08 ` David Billinghurst
2017-03-07 1:59 ` Daniel Santos [this message]
2017-03-07 13:58 ` cyg Simple
2017-03-07 23:21 ` Daniel Santos
2017-03-08 0:36 ` David Billinghurst
2017-03-08 5:14 ` Daniel Santos
2017-03-08 8:21 ` Brian Inglis
2017-03-09 22:48 ` Daniel Santos
2017-03-09 23:51 ` Brian Inglis
2017-03-10 0:01 ` Tim Prince via cygwin
2017-03-10 18:56 ` Achim Gratz
2017-03-10 20:30 ` Brian Inglis
2017-03-10 20:48 ` Achim Gratz
2017-03-13 16:35 ` Daniel Santos
2017-03-13 17:25 ` Marco Atzeri
2017-03-15 16:50 ` Daniel Santos
2017-03-15 19:36 ` Brian Inglis
2017-03-16 20:55 ` Daniel Santos
2017-03-17 5:17 ` Brian Inglis
2017-03-18 13:48 ` Daniel Santos
2017-03-18 14:52 ` cyg Simple
2017-03-12 4:04 ` Daniel Santos
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