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Message-ID: <3B2658DA.31D29414@ece.gatech.edu>
Date: Tue, 12 Jun 2001 14:00:58 -0400
From: "Charles S. Wilson" <cwilson AT ece DOT gatech DOT edu>
MIME-Version: 1.0
To: cygwin-announce AT cygwin DOT com
Subject: Updated: tiff-3.5.6beta-2
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The tiff package has been updated to version 3.5.6beta-2.  It is based
on the official tiff-v3.5.6-beta.tar.gz distribution, and provides a
library and utility routines for manipulating tiff files and images.  I
updated cygwin's "stable" version (based on 3.5.5) to a beta mainly
because the ImageMagick people considered 3.5.6beta stable enough to use
as their 'current' libtiff (and 3.5.5 is over a year old; current
libtiff development is at 3.5.7-alpha3).

CHANGES: (vs. 3.5.6beta-1)

- fixed a .def file error that caused the 3.5.6beta-1 dll to be
incompatible with previously compiled executables.  The 3.5.6beta-2 dll
is fully backwards compatible.  Thanks to Devin Cook for pointing this
out.  See the thread entitled ".def files, ordinals, and dlls" on
cygiwn-apps for more discussion
  
CHANGES: (vs. 3.5.5-3)

- you can now use -DALL_STATIC as an alias for -DTIFF_STATIC

- README points to simplesystems.org instead of wizards.com (wizards
were scared off hosting libtiff because of UNISYS patent issues, so they
stopped mirroring ANY graphics libs).

- update to the 3.5.6beta codebase

INSTALLATION:

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.  You must choose a
mirror, since direct downloads from 'cygwin.com' are no longer 
allowed.

ftp://mirrors.rcn.net/pub/sourceware/cygwin/ (US)
ftp://linux.sarang.net/mirror/development/compiler/cygwin/ (Korea)
ftp://ftp.mirror.ac.uk/sites/sourceware.cygnus.com/pub/cygwin (UK)

The setup.exe program will figure out what needs to be updated on your
system and should install the less package automatically.

If you have questions or comments, please send them to the Cygwin
mailing list at:  cygwin AT sources DOT redhat DOT 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-1.1.3-6 and jpeg-6b-4 packages; please install those
packages as well.

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/cygtiff3.dll (**)
  - cygwin-specific docs in /usr/doc/Cygwin/tiff-3.5.6.README
  - generic docs in /usr/doc/tiff-3.5.6/*
  
o A cygwin-specific README and PATCH are stored in the source archive,
under <top>/CYGWIN-PATCHES/*. The original
libtiff-lzw-compression-kit-1.2.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 You can also use -DALL_STATIC as an alias for '-DTIFF_STATIC
-DJPEG_STATIC -DZLIB_STATIC' (much easier, right?). So far, 
the following libs are supplied in both static and dynamic forms and
support the -DALL_STATIC macro as an alias for -D<pkgname>_STATIC:
  ncurses readline zlib libpng xpm-nox jpeg tiff
The following static/dynamic libraries do not (yet) support the 
-DALL_STATIC macro:
  gdbm gettext jbig

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