[developers] PET on 64-bit Architectures

[Eric Nichols]

Greetings,

I have been trying to get PET working on 64 bit machines and am 
experiencing a few problems
getting it to compile with RMRS support. On 32 bit architectures, I have 
been able to compile
successfully using ECL versions 0.9d and 0.9e, however, ECL versions 
older than 0.9g will not
compile due to an obscure G++ bug. Thus, before attempting to build PET 
on a 64 bit platform,
I am focusing my efforts on getting PET building on a 32 bit machine 
using the latest version of
ECL (0.9h). This version claims to support G++ 4.0 and 64 bit platforms, 
but it also contains
several changes to the C-Lisp interface which I fear may have broken the 
RMRS code. I have
attached a log of the error messages I get when I compile. My system is 
as follows:

CPU: Intel Pentium 4 3.2 Ghz with HyperThreading
Operating System: Ubuntu Linux "Breezy"
Kernel: 2.6.12
Compiler: G++ 4.0.2
ECL: version 0.9h
RMRS source: LKB 20051116 release
PET source: 0.99.7 main branch + patch

I am applying a patch that I wrote to make the mrs.h file by calling ECL 
which builds its from the
RMRS source since rmrs.h is no longer distributed with LKB.

It appears that ECL is able to generate all of the C code correctly. The 
errors start with:

In file included from /usr/lib/ecl/h/ecl.h:62,
                 from petecl.c:22:
/usr/lib/ecl/h/object.h:40: error: syntax error before ‘cl_narg’

Line 22 of petecl.c is #include <ecl.h>. Simply including it is enough 
to generate errors.

I would greatly appreciate it if someone more knowledgeable about LISP 
could look into this.

Eric Nichols <eric-n at is.naist.jp>

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