Re: mixed c and occam compiler (VBDis)
15 Feb 2001 00:39:56 -0500

          From comp.compilers

Related articles
mixed c and occam compiler (Andrew Woolley) (2001-02-12)
Re: mixed c and occam compiler (2001-02-15)
Re: mixed c and occam compiler (2001-02-17)
| List of all articles for this month |

From: (VBDis)
Newsgroups: comp.compilers
Date: 15 Feb 2001 00:39:56 -0500
Organization: AOL Bertelsmann Online GmbH & Co. KG
References: 01-02-051
Keywords: C, practice
Posted-Date: 15 Feb 2001 00:39:56 EST

Andrew Woolley <> schreibt:

>For part of my third year Uni project I have to allow for a mixture of
>c and occam source.

The most severe problems can arise, when the runtime libraries of both
compilers are incompatible. Many languages have their own methods for e.g. I/O
and memory management, which
a) must be initialized at program start
b) can conflict with each other

The risk of such conflicts is low, when all compilers are provided by
the same company, so that they most probably use the same runtime

In the worst case you have to rewrite the system libraries of both
compilers, into a commonly usable library. That new library then
includes the glue, to receive all resource related system calls,
created by every compiler, and to handle the requests in a common

In practice it should be sufficient to use one runtime system as
provided by one of the compilers, and to add a library of stubs, which
translate the system calls of the other compiler(s) into calls to the
used runtime system.

When the system subroutines have the same name, but different
operation, the problem is harder to solve. Then you must rename the
conflicting symbols to something unique, for every different routine,
and you also provide the code for the renamed symbols.


Post a followup to this message

Return to the comp.compilers page.
Search the comp.compilers archives again.