Re: libjpeg:jpeg_create_decompress

[raster redhat com]

On 26 May, Kevin Littlejohn shouted:
->  Hi all,
->  
->  This is a kind of a weird one.  libImlib is trying to find a symbol 
->  jpeg_create_decompress - and I've found where in the code it's used, and it's 
->  specifically only used if libjpeg is found.  Ok, cool, no problem - except 
->  libjpeg doesn't _have_ a jpeg_create_decompress - it _does_ have a 
->  jpeg_start_decompress, but no jpeg_create_decompress.  This is libjpeg-6a (and 
->  6b, if it makes any difference) on a Sun box.  I can't believe something as 
->  silly as this would be in there without a whole bunch of other people having 
->  problems, so I've got to figure it's something I'm getting wrong - but I can't 
->  for the life of me see what :(
->  
->  Any ideas?  Oh, everything checked out of cvs, where possible...

from jpeglib.h:

...
#define jpeg_create_compress(cinfo) \
    jpeg_CreateCompress((cinfo), JPEG_LIB_VERSION, \
                        (size_t) sizeof(struct jpeg_compress_struct))
#define jpeg_create_decompress(cinfo) \
    jpeg_CreateDecompress((cinfo), JPEG_LIB_VERSION, \
                          (size_t) sizeof(struct jpeg_decompress_struct))
EXTERN(void) jpeg_CreateCompress JPP((j_compress_ptr cinfo,
                                      int version, size_t structsize));
...

~/ objdump --dynamic-syms /usr/lib/libjpeg.so. | grep jpeg_CreateCompress 
000021a0 g    DF .text  00000113 jpeg_CreateCompress

:)

I bet u have multiple jpeg libs on yer system in different places and
thus multiple jpeglib.h headers.. always guaranteed to screw up
everything.

->  KevinL
->  ---
->  Kevin Littlejohn, darius@connect.com.au, darius@bofh.net.au
->  Development Engineer, Connect.com.au.
->  The above all my own words, etc. etc.
->  
->  
->  

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