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Message-ID: <bc55fd6b-98a4-45d5-b7d1-6db0918276a9@maxrnd.com>
Date: Fri, 19 Dec 2025 00:37:25 -0800
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Subject: Re: Updated: qt5-base 5.15.18-1 (test)
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From: Mark Geisert via Cygwin <cygwin AT cygwin DOT com>
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Hi Jakob,

On 12/15/2025 7:47 AM, Jakob Bohm via Cygwin wrote:
> On 13/12/2025 00:16, Mark Geisert via Cygwin wrote:
[...]
>> Unfortunately the names of the DLLs haven't changed between 5.9.* and 
>> 5.15.18.  One has to look at the update times to notice the problem:
>>
>>> ~ cd /usr/bin
>>>
>>> /usr/bin ls -ltr cygQt5*dll | tail
>>> -rwxr-xr-x 1 Mark None   306195 May 28  2025 cygQt5OpenGL-5.dll*
>>> -rwxr-xr-x 1 Mark None  1564179 May 28  2025 cygQt5Network-5.dll*
>>> -rwxr-xr-x 1 Mark None   340499 May 28  2025 cygQt5PrintSupport-5.dll*
>>> -rwxr-xr-x 1 Mark None   237587 May 28  2025 cygQt5Sql-5.dll*
>>> -rwxr-xr-x 1 Mark None   289299 May 28  2025 cygQt5Test-5.dll*
>>> -rwxr-xr-x 1 Mark None  4923923 May 28  2025 cygQt5Core-5.dll*
>>> -rwxr-xr-x 1 Mark None   234003 May 28  2025 cygQt5Xml-5.dll*
>>> -rwxr-xr-x 1 Mark None  1208851 May 28  2025 cygQt5XcbQpa-5.dll*
>>> -rwxr-xr-x 1 Mark None  5338643 May 28  2025 cygQt5Gui-5.dll*
>>> -rwxr-xr-x 1 Mark None  6160915 May 28  2025 cygQt5Widgets-5.dll*
>>>
>>> /usr/bin cd /usr/lib/debug/usr/bin
>>>
>>> /usr/lib/debug/usr/bin ls -ltr cygQt5*dll.dbg | tail
>>> -rwxr-xr-x 1 Mark Administrators  18556839 Dec  5 16:12 
>>> cygQt5OpenGL-5.dll.dbg*
>>> -rwxr-xr-x 1 Mark Administrators  77383641 Dec  5 16:12 
>>> cygQt5Network-5.dll.dbg*
>>> -rwxr-xr-x 1 Mark Administrators  12359956 Dec  5 16:12 
>>> cygQt5PrintSupport-5.dll.dbg*
>>> -rwxr-xr-x 1 Mark Administrators 126305401 Dec  5 16:12 
>>> cygQt5Core-5.dll.dbg*
>>> -rwxr-xr-x 1 Mark Administrators   8077901 Dec  5 16:12 
>>> cygQt5Sql-5.dll.dbg*
>>> -rwxr-xr-x 1 Mark Administrators   8935879 Dec  5 16:12 
>>> cygQt5Test-5.dll.dbg*
>>> -rwxr-xr-x 1 Mark Administrators  56896442 Dec  5 16:13 
>>> cygQt5XcbQpa-5.dll.dbg*
>>> -rwxr-xr-x 1 Mark Administrators   3337397 Dec  5 16:13 
>>> cygQt5Xml-5.dll.dbg*
>>> -rwxr-xr-x 1 Mark Administrators 209244469 Dec  5 16:13 
>>> cygQt5Gui-5.dll.dbg*
>>> -rwxr-xr-x 1 Mark Administrators 182191608 Dec  5 16:14 
>>> cygQt5Widgets-5.dll.dbg*
>>>
>>> /usr/lib/debug/usr/bin
>>
>> ..mark
>>
> Protip: Properly built PE, NE, LE or LX format DLL and EXE files are 
> supposed to contain a
> "Version information" structure, which specifies a textual file 
> description, copyright
> information (such as "(C) year,year FSF Inc." and "LGPL 3.0+" as well as 
> computer
> comparable binary version numbers in the form U16[4] { major, minor, 
> sub, patch } .

Thank you for your input.  I used 'ls' because that showed the set of 
most recently updated DLLs was precisely the set in the 1.15.18 test 
build.  It was faster to check a hunch this way than opening each file 
individually through an Explorer GUI or PS script.

It didn't occur to me at the time, but the standard Cygwin tool 
'cygcheck' could have provided me the similar information: the versions 
of each package.  So I already could get package-level and file-level 
confirmations of my hunch.

The enhancement you suggest should ideally be applied Cygwin-wide.  So 
it might make sense to generate the Version Information structure with 
our build tool 'cygport'.  Patches would be thoughtfully considered.  I 
don't think there's an existing Cygwin mechanism for displaying such 
structures, so that would have to be developed too.

..mark


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