David, > At what levels of the libraries do they quit needing LZW.
It quits when it checks for compress in compress.c and reports tiff, jeg, png and imagick libs are not complete -- that is becasue compress is not there any more. > I noticed > that compress was missing in the XFree86 versions of libz and was > wondering why. Are you pretty sure were safe in assuming we don't > need it? Yes, that is true. It is intentional. LZW code is there but had been disabled due to LZW patent issue. >Does ImageMagick still use it for it's lzw > compressed tiff? Not any more. ImageMagick 5.1.1 release 2 released on Feb 8, has LZW turned off by default. You issue --enable-LZW at your own risk ;-) ImageMagick now uses bzip2 compression, if you have libbz2 installed. There is new codes now for png, jpeg and tiff at UU NET ftp severs which do not use LZW any more. Suhaib > > David > > >We should stop checking for compression (LZW) for TIFF, PNG, JPEG > >and ImageMagick. The latest versions of these libraries have > >removed compress from their code due to LZW patent issue. The > >configure in DX checks for compress for these libraries > which fail > >because of missing "compress" in newer version... thus reports > >package incomplete. > > > >Suhaib > > > >checking if TIFF package is complete... no -- some > components failed > >test > >checking for HDF components ... > >checking for hdf.h... yes > >checking for Hopen in -ldf... yes > >checking if HDF package is complete... yes > >checking for JBIG support ... > >checking for jbig.h... yes > >checking for jbg_dec_init in -ljbig... yes > >checking if JBIG package is complete... yes > >checking for CDF support ... > >checking for cdf.h... yes > >checking for CDFlib in -lcdf... yes > >checking if CDF package is complete... yes > >checking for NETCDF support ... > >checking for netcdf.h... yes > >checking for free_NC_attr in -lnetcdf... yes > >checking if NETCDF package is complete... yes > >checking for ImageMagick support ... > >checking for magick/magick.h... yes > >checking for GetImageInfo in -lMagick... no > >checking if ImageMagick package is complete... no -- > some components > >failed test > > > >checking for getcwd... yes > > > >**************************** > >Suhaib M. Siddiqi > >Senior Research Scientist > >Inspire Pharmaceuticals, Inc. > >4222 Emperor Blvd., Suite 470 > >Durham, NC 27703 > > > >Tel: 919-941-9777 Ext 238 > >FAX: 919-941-9797 > >http://www.inspirepharm.com > > -- > .......................................................... > ................... > David L. Thompson The University > of Montana > mailto:[EMAIL PROTECTED] Computer > Science Department > http://www.cs.umt.edu/u/dthompsn Missoula, MT 59812 > Work Phone : > (406)257-8530
