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RE: [1.7] Unable to find jpeg_CreateDecompress but linked against cygjpeg-62.dll OK


Dave Korn wrote on Friday, March 27, 2009 11:46 AM:
> Charles Wilson wrote:
>> Thrall, Bryan wrote:
>>> I recently installed 1.7 (C:\cygwin_1.7) alongside 1.5 (C:\cygwin)
on my
>>> workstation, then reconfigured and rebuilt my application (vital),
which
>>> worked just fine under 1.5 but doesn't under 1.7.
>> 
>>> "Unable to find jpeg_CreateDecompress in cygwin1.dll".
>>                                            ^^^^^^^^^^^
>> 
>>> and cygjpeg-62.dll is executable and exports jpeg_CreateDecompress
>>> (according to the Depends tool, which also says vital imports that
>>> symbol by name), so I'm at a loss to explain why that symbol isn't
being
>>> found. Perhaps it is a red herring?
>> 
>> Did you, by chance, compile with gcc-4, and have -lm on your link
>> command? Try either compiling with gcc-3, or remove -lm.
> 
>   Or -lpthread.  Yep, this is almost certainly the broken import
tables
> problem again.

Yep, updating to Cygwin 1.7.0-45 fixes the problem; I had assumed the
broken import tables problem had to do with gcc4, and just needed to
re-examine with a clear head :)

Thanks,
-- 
Bryan Thrall
FlightSafety International
bryan.thrall@flightsafety.com

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