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Re: c interface to modules

From: Jonathan Wilson
Subject: Re: c interface to modules
Date: Fri, 17 Jun 2005 18:38:25 -0500
User-agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.5) Gecko/20031030

Whoops! I always forget and just hit reply, then the message doesn't go to the list.

Ondrej Zajicek wrote:

I would like to export two sets (low-level and high-level interface)
of C functions to Scheme. I think it is a good idea to have each
interface in different module. What is a good way to define C
function in specific module? Should i just replace scm_c_define_gsubr
with combination of scm_c_make_gsubr and scm_c_module_define?

Hi Ondrej!
I would use SWIG if I were you.  Very simple, fast, and easy.  Does all
the drudge work of creating wrapper functions and all for you.  I have not used it for anything large scale, but
the smaller scale stuff I have done to test it out worked like a charm!
It will create a xxx_wrap.c file for every xxx.c or xxx.h file you feed
it, then you compile these wrapper files and link them into a shared
library along with the original code (and whatever libraries it needs to
link with).  Then you can either just use (load-extension ""
"SWIG_init") directly, or write a module in Scheme that loads the shared
lib whenever the module is loaded.

Best of luck!

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