[Interest] Conflicting libjpeg versions

[Etienne Sandré-Chardonnal]

Hi,

There is no dependency to any libjpeg DLL, as checked with dependency
walker. And I have searched for any libjpeg*.dll in my system, none of them
are inside the PATH. The libjpeg is linked statically.

Which options do I have for configuring Qt? I only know the option which
switches between embedded libjpeg and system libjpeg, and using the latter
should normally make Qt use the 6.2 that is installed in the compiler
folders (include/lib)




2016-03-29 16:24 GMT+02:00 Olivier B. <perso.olivier.barthelemy at gmail.com>:

> Either your PATH is set so the wrong libjpeg dll is found first, or qt
> found the wrong jpeg include first.
> If you don't care which version is used, set your PATH so that your system
> libjpeg 6.2 is found first at runtime (or place the libjpeg dll of the
> version that was detected beside your executable). If you want a specific
> version, change qt configure options accordingly
>
> 2016-03-29 16:18 GMT+02:00 Etienne Sandré-Chardonnal <
> etienne.sandre at m4x.org>:
>
>> Dear all,
>>
>> I am compiling under windows with MinGW (64-bit)
>>
>> I compiled Qt for static linking. I let the default options for configure
>> regarding jpeg support, and it seems that it choose using the system
>> libjpeg (as seen in config.summary), probably because it detected it. My
>> system libjpeg is the binary shipped by libjpeg-turbo 1.4.2 official
>> download, installed inside minGW folders. The libjpeg version as in
>> jconfig.h is 62 (6.2)
>>
>> Now when I compile and run my application, libjpeg functions return the
>> following error message : Wrong JPEG library version: library is 80,
>> caller expects 62
>>
>> So it means that at some point my application was linked (statically or
>> dynamically) with libjpeg version 80 (8.0)
>>
>> If I remove the libjpeg.a from my compiler path, I cannot compile my
>> application anymore. So it is properly linking against that file, or I am
>> missing something.
>>
>> What could be the issue?
>>
>> Thanks...
>>
>>
>>
>>
>>
>>
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>
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