Re: c interface to modules

[Jonathan Wilson]

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

Ondrej Zajicek wrote:

> Hello
> 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.
http://www.swig.org/  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 "xxx.so"
"SWIG_init") directly, or write a module in Scheme that loads the shared
lib whenever the module is loaded.

Best of luck!
Jon