New on sources.redhat.com: tiff-3.5.5-2

Charles Wilson cwilson@ece.gatech.edu
Mon Jul 31 22:21:00 GMT 2000


This is the intial port to cygwin's new packaging scheme of the libtiff
library and applications. It is based on the official tiff-v3.5.5.tar.gz
distribution.

Please read this message in its entirety. A list of changes/notes
concerning this package appear below.

The location of this package, in /cygwin/contrib rather than
/cygwin/latest should not affect most users; for now, packages in the
contrib directory are treated exactly as if they were in the latest
directory. In the future, setup.exe may have the ability to mark certain
packages -- especially those in contrib -- as optional. 

To update your installation, click on the "Install Cygwin now" link on
the http://sources.redhat.com/cygwin web page. This downloads setup.exe
to your system.

Run setup and answer all of the questions.  PLEASE, PLEASE, PLEASE
choose a mirror site for your download.  The 'sources.redhat.com' site
is badly overloaded.  The mirrors below have the latest version of this
package:

ftp://ftp.sunsite.utk.edu/pub/cygwin/ (US)
ftp://gd.tuwien.ac.at/gnu/cygwin/ (Austria)
http://programming.ccp14.ac.uk/ftp-mirror/programming/cygwin/pub/cygwin/
   (UK)

Note that if this is the first time that you've run the new GUI version
of setup, it will currently download the whole cygwin net release again.
After this point it will only download what is needed.

If you have questions or comments, please send them to the Cygwin
mailing list at:  cygwin@sources.redhat.com .  I would appreciate if you
would use this mailing list rather than emailing me directly. This
includes ideas and comments about the setup utility or Cygwin general.

If you want to make a point or ask a question the Cygwin mailing list is
the appropriate place.

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NOTES:

o Building the package from source requires gcc-2.95.2-2 and
binutils-20000722-1 or later

o Depends on zlib-1.1.3-4 and jpeg-6b-2 packages; please install those
packages as well.

o I've had tiff-3.5.2 on cygutils for some time, the cygutils version
was older, was staticlib only, contained patent-infringing LZW code, and
didn't follow the package layout rules. 

o As of v3.5.3, libtiff no longer includes support for LZW-compressed
images, due to Unisys' recent activities enforcing their patent. While
the source archive contains the official 're-enable LZW support' patch,
it is NOT applied to the source archive and the files in the binary
package do NOT include that functionality. If you want it, you have to
build it yourself (although the Cygwin README does contain step-by-step
instructions for doing this, intended for *authorized users* only --
e.g. those outside of the US patent jurisdiction, or who have purchased
a license from Unisys.)

o Includes several utilities for manipulating tiff files. The binary
package includes dynamically linked versions of these utilities,
although the build process will make both dynamically and statically
linked versions.  

o Abides by the cygwin package system standard:
  - import-lib   /usr/lib/libtiff.dll.a
  - static-lib   /usr/lib/libtiff.a
  - stripped dll /usr/bin/libtiff.dll
  - cygwin-specific docs in /usr/doc/Cygwin/tiff-3.5.5.README
  - generic docs in /usr/doc/tiff-3.5.5/*
  
o If you have installed or plan to install the usr-local package from
cygutils, read this note:
http://cygutils.netpedia.net/V1.1/index.html#note1

o A cygwin-specific README and PATCH are stored in the source archive,
under <top>/CYGWIN-PATCHES/*. The original
libtiff-lzw-compression-kit-1.1.tar.gz (for re-enabling LZW support) is
also stored under <top>/CYGWIN-PATCHES/*. Finally, tif_rpt_3.4b33.tar.gz
is stored under <top>/CYGWIN-PATCHES, and contains tiffdump output for
the standard set of test images (for 'make test' -- see the
cygwin-specific README file). However, ONLY the cygwin-specific patch
has been applied to the source archive; the LZW compression patch has
NOT been applied, nor is LZW support enabled in the binary
distribution.  The cygwin-specific README is also installed by the
binary distribution as described above.

o If you are building a package that depends on libtiff, and you wish to
link *statically*, define '-DTIFF_STATIC -DJPEG_STATIC -DZLIB_STATIC' to
get the 'correct' #define's in tiffio.h (& friends), jpeg.h (& friends),
and zlib.h/zconf.h when compiling the .o files in your package. Also,
use 'gcc -static' when linking your package.

o No special -Ddefine options or link options are needed when building a
package that depends on libtiff and you want to link dynamically
(recommended).


Charles Wilson
tiff volunteer maintainer for cygwin


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