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Subject:	Re: Question about the ldd output
To:	The Cygwin Mailing List <cygwin AT cygwin DOT com>
References:	<BN6PR09MB2227BA2644949DB75A67A6B2A5F60 AT BN6PR09MB2227 DOT namprd09 DOT prod DOT outlook DOT com> <ee7608a2-2e13-d2eb-6410-c07362d75296 AT SystematicSw DOT ab DOT ca>
From:	Jon Turney <jon DOT turney AT dronecode DOT org DOT uk>
Message-ID:	<e0e8c9db-bd7a-638c-0bb5-88c43c5f9d98@dronecode.org.uk>
Date:	Tue, 9 Jul 2019 19:02:35 +0100
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On 09/07/2019 17:40, Brian Inglis wrote:
> On 2019-07-08 12:00, Lavrentiev, Anton (NIH/NLM/NCBI) [C] via cygwin wrote:
>> Well, I don't think there's anything special that Cygwin does to load executables, because these are essentially Windows processes, so they are loaded by Windows, first and foremost.
>>
>> But it gets even weirder.  Below are two _consecutive!_ runs of ldd on the very same executable.  Why the output differs so drastically (including the unknown dlls all of a sudden)?

This is probably a 'bug'.

> Libraries may be loaded asynchronously as they are accessed, and ldd just dumps
> the dll import table once the subprocess is ready to run.
> Perhaps these are import entries that ldd should detect and skip or annotate in
> some more useful way.

Please don't spread misinformation based upon guessing how Cygwin's ldd 
works.

It's not necessary, as the source code is available [1] :)

[1] 
https://cygwin.com/git/gitweb.cgi?p=newlib-cygwin.git;a=history;f=winsup/utils/ldd.cc


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