cygwin + libjpeg [C++] linking problem

[Charles Wilson]

Fixed in jpeg-6b-7

--Chuck


Charles Wilson wrote:

> Please keep cygwin related topics on the cygwin list. I've redirected 
> this mail there, and reset the Reply-To address for your convenience.
> 
> The jpeg library, as distributied by the official "Independent Jpeg 
> Group" and by cygwin, is NOT c++ safe.  I know that the Red Hat libjpeg 
> source RPM contains some patches to make it C++ safe; you may want to 
> look at those, and build your own jpeg library from that.
> 
> In the (distant) future, I *may* incorporate these C++ changes in a 
> future release of the jpeg library for cygwin.  Maybe.
> 
> --Chuck
> 
> Mika Niemi wrote:
> 
>> Hi,
>>
>> I am having problems linking with libjpeg with cygwin. This is a recent
>> installation of cygwin off the web. Are there any special switch I should
>> use in the linking phase? The following command works fine in linux.
>>
>> Mika Niemi
>>
>>
>>
>>> bash-2.05$ g++ -o test test.o framewriter.o -ljpeg
>>> framewriter.o(.text+0xa6):framewriter.cc: undefined reference to 
>>> `import stub for jpeg_std_error(jpeg_error_mgr *)'
>>> framewriter.o(.text+0xd8):framewriter.cc: undefined reference to 
>>> `import stub for jpeg_CreateCompress(jpeg_compress_struct *, int, 
>>> unsigned int)'
>>> framewriter.o(.text+0x289):framewriter.cc: undefined reference to 
>>> `import stub for jpeg_finish_compress(jpeg_compress_struct *)'
>>> framewriter.o(.text+0x35a):framewriter.cc: undefined reference to 
>>> `import stub for jpeg_stdio_dest(jpeg_compress_struct *, __sFILE *)'
>>> framewriter.o(.text+0x3ac):framewriter.cc: undefined reference to 
>>> `import stub for jpeg_set_defaults(jpeg_compress_struct *)'
>>> framewriter.o(.text+0x3d0):framewriter.cc: undefined reference to 
>>> `import stub for jpeg_set_quality(jpeg_compress_struct *, int, int)'
>>> framewriter.o(.text+0x3f2):framewriter.cc: undefined reference to 
>>> `import stub for jpeg_start_compress(jpeg_compress_struct *, int)'
>>> framewriter.o(.text+0x4ec):framewriter.cc: undefined reference to 
>>> `import stub for jpeg_write_scanlines(jpeg_compress_struct *, 
>>> unsigned char **, unsigned int)'
>>> framewriter.o(.text+0x51a):framewriter.cc: undefined reference to 
>>> `import stub for jpeg_finish_compress(jpeg_compress_struct *)'
>>> framewriter.o(.text+0x53b):framewriter.cc: undefined reference to 
>>> `import stub for jpeg_destroy_compress(jpeg_compress_struct *)'
>>> collect2: ld returned 1 exit status
>>>
>>
> 
> 
> 



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