For the broadest possible support for OJPEG files the following steps are 
necessary:

 o Ensure you are able to build with JPEG support (see config.site).

 o Uncomment OJPEG="yes" statement in config.site or #define OJPEG_SUPPORT
   somewhere (if you don't use configure logic). This can be put in
   tiffconf.h for instance.

 o Compile ojpeg.c module and link it with libtiff library. If you are using
   configure script for building library it should be done automatically.
   As an another option you can append the jdhuff_add.c code to the end
   of jdhuff.c within the IJG JPEG libraries jdhuff.c file and recompile
   libjpeg (jpeg-6b tested).

 o Rebuild cleanly.


OJPEG support implemented by Scott Marovich at HP (marovich@hpl.hp.com).

---

For notes on further improved JPEG-in-TIFF support also see the following
bug in bugzilla:

  http://bugzilla.remotesensing.org/show_bug.cgi?id=156