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Subject: Re: Question about the ldd output
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References: <BN6PR09MB2227BA2644949DB75A67A6B2A5F60@BN6PR09MB2227.namprd09.prod.outlook.com> <ee7608a2-2e13-d2eb-6410-c07362d75296@SystematicSw.ab.ca>
From: Jon Turney <jon.turney@dronecode.org.uk>
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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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