File r38/lisp/csl/support-packages/README.fox artifact 0a9dd11a67 part of check-in 9992369dd3


NOTE VERY WELL: Fox 1.6.x and 1.7.10 were all LPGPL 2.1, but 1.7.11 has
moved to LGPL 3.0 and substantally downgraded the fox additional permission
for static linking.
 
I will use the earlier versions of FOX for now until I have had a chance to
let the dust settle on GPL 3  And perhaps for FSF to think again about the
issue of compatibility between GPL 2 and GPL 3 whereby for instance a
GPL 2 project may not be linked against an LGPL 3 library because (as I
understand it) the LGPL 3 imposes constraints that GPL 2 views as unacceptable
restrictions on freedom.



The Fox Toolkit is distributed under the LGPL and was originated by 
Jeroen van der Zijp. It has a home page at http://www.fox-toolkit.org
(and possibly also .com) and I include a distribution source file
for convenience and it unambiguously clear which version my code has
been tested with.

I build for a Windows target using "cygwin" and the "mingw32" set of tools.
I have not tested and do not support use of Microsoft, Watcom or other C and
C++ compilers. For Linux and Unix I have had success of a wide range of
32-bit systems and also on OpenSuSE's release of 64-bit Linux.
I can build for Windows-64 by using the Microsoft command-line C compiler
launched from cygwin and used as a cross-compiler.

The scripts "build-all.sh" and  "build-fox-1.6.sh" show the options that I use
to create binaries of FOX just sufficient for my purposes. At the time
of writing FOX-1.6 is the "stable" branch. 

I provide a set of patches to FOX some of which are to customise it in ways
that I want, others are to make the build under cygwin (and the cross-
build for Windows-64) work smoothly for me.

The script "build-all.sh" arranges to put the compiled version of FOX
in a local directory (without overriding "--prefix" FOX would try to
install itself in /usr/local, and hence would need root authority).

You will then need to use "--with=fox=../fox/<arch>" to tell the build of CSL
where to find the FOX libraries.

When I tried my scripts on "historic" versions of Linux (eg RedHat 6.1 and
7.2) I found it NECESSARY to build and install updated versions of the
automake and autoconf tools, which is why I have copies of their source
here too.

A build on Solaris 10 x86 was possible but to succeed there I needed to
repair a file libstdc++.a that was faulty on the distribution media (following
instructions found on a Solaris-related newsgroup), install gcc and many
related tools and conduct the build using "gmake" from a "bash" shell rather
than using the Solaris native shell and make utility. On that platform I used
autoconf etc made from the archives that I supply.

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