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From: wschou@waikato.ac.nz
Newsgroups: comp.lang.scheme.c
Subject: Scheme->C compiler
Message-ID: <1991Feb12.135141.2925@waikato.ac.nz>
Date: 12 Feb 91 00:51:40 GMT
Organization: University of Waikato, Hamilton, New Zealand
Lines: 33


How does one create the Scheme->C compiler from the scheme files directly?

I have compiled and linked the c source supplied with the 28 SEP 1990 release
and have successfully created a working compiler and interpreter on a SPARC 1
using the patches provided.  However, when I use this to recompile the scheme
source to C I run into problems.

Firstly, there are several syntax errors in the scheme source; in particular
in files scsc/misccode, scrt/scrt5.sc, scrt/scdebug.sc so the c files
supplied could not have been generated from the given scheme files.

When the syntax errors are corrected the c files produced the the original
compiler are largely identical with the supplied c files but the files
scsc/expform.c, scsc/misccode.c and scsc/readtext.c seem to differ.
It is difficult to compare these generated c files with the supplied ones as
there are trivial differences in the compiler-generated variables names.

The newly created scheme compiler will correctly compile several scheme files 
but hangs on some including scsc/expform.sc and scrt/scdebug.sc.

I have also found the following simple example will not compile either
although it does with the original compiler:

(module test)
(define-external var test)
(define var 0)

Has anyone else been able to generate a working Scheme->C compiler from
the scheme source.

Wayne Schou
wschou@waikato.ac.nz