 the past I have tried to support compilers without <TT>const</TT>
and systems without <TT>&lt;stdarg.h&gt;</TT>, but I am
<EM>no longer interested in these
antiquated environments</EM>.  With the general availability of
the freely available GCC compiler, I
see no reason to incorporate modifications to the software for these
purposes.

<P>
An effort has been made to isolate as many of the
operating system-dependencies
as possible in two files: <B>tiffcomp.h</B> and
<B>libtiff/tif_&lt;os&gt;.c</B>.  The latt