Re: [Gcl-devel] Interfacing C libraries and lisp.

[Conan]

Ok, this looks good.  Can I use this on a .a or a .so file to load every
function in a library, and then write lisp functions for each?

386-linux.defs
--------------

  EXTRAS=/usr/lib/libglut.a

--------------
would this work, or would I have to write c code wrappers to each function
and then have something like this in machines.def.

386-linux.defs
--------------

LIBS = -lglut
EXTRAS=mywrapper.o

--------------


Conan K Woods
address@hidden

On 12 Jun 2002, Camm Maguire wrote:

> Greetings!  Well, here is what I had seen, from o/littleXlsp.lsp:
> 
> ;;This file is included as a demonstration of how to link in low level
> ;;C code.   It is also useful! [comments by wfs]
> ;;Author: Mark Ring  (address@hidden)
> 
> ;; In the next comment we explain how to link in the file
> ;; and then a sample usage.
> 
> #|
> If you have si::faslink you may use: 
> (si::faslink "/public/gcl/lsp/littleXlsp.o" "/public/gcl/o/littleXwin.o -lX11 
> -lc")
> 
> To avoid using faslink which is much less portable, 
> when building the gcl image you may add
> EXTRAS=${ODIR}/littleXwin.o
> LIBS= -lX -lm -lg
> to the h/machine.defs, redo the add-defs machine, and remake so that
> the low level X code will be linked in.
> Then you may simply
> (load "/public/gcl/lsp/littleXlsp.o")
> 
> ;;Now you may try the following examples: 
> 
> .....
> 
> Unfortunately, faslink is not yet implemented for Linux/elf, so you'll
> have to use the second procedure.  Should be very straightforward to
> get a more portable faslink, but I want to get the (very similar)
> fasload currently in use ported first.
> 
> 
> 
> Take care,
> 
> 
> Conan <address@hidden> writes:
> 
> > Thanks, that helps quite a bit!  But I do need other libraries, if you
> > could find out how to add extra libraries it would be a huge help.
> > 
> > Conan K Woods
> > address@hidden
> > 
> > On 11 Jun 2002, Camm Maguire wrote:
> > 
> > > Greetings!  Maybe try this, with your code in ff.lsp:
> > > 
> > > 
> > > >(compile-file "ff.lsp")
> > > 
> > > Compiling ff.lsp.
> > > End of Pass 1.  
> > > End of Pass 2.  
> > > OPTIMIZE levels: Safety=0 (No runtime error checking), Space=0, Speed=3
> > > Finished compiling ff.lsp.
> > > #p"ff.o"
> > > 
> > > >(load "ff.o")
> > > 
> > > Loading ff.o
> > > start address -T 832c234 Finished loading ff.o
> > > 88
> > > 
> > > >(foobar "hello world")
> > > hello world
> > > NIL
> > > 
> > > -lc is linked into gcl already.  If you need another lib, let me know
> > >  and I'll dig through the docs -- there is some lisp variable which
> > >  adds libaries to the command line.
> > > 
> > > take care,
> > > 
> > > 
> > > Conan <address@hidden> writes:
> > > 
> > > > Hi, I hope this is the correct list to post this on.
> > > > 
> > > > I have been having a heck of a time interfacing C and lisp using gcl.  I
> > > > am attempting to call a few opengl routines from gcl.  I would be happy 
> > > > if
> > > > I could even call printf from gcl, so lets use that as an example. 
> > > > 
> > > > (defentry foobar (string) (void "printf"))
> > > > 
> > > > The way I understand it, this creates a lisp function that calls the c
> > > > function printf, which returns void and takes a string argument.
> > > > 
> > > > I believe this function has to be compiled somehow, but I am not 
> > > > entirely
> > > > clear on this.
> > > > 
> > > > The biggest issue I have is how to actually load the library that 
> > > > contains
> > > > printf, or whatever other functions I happen to need.
> > > > 
> > > > 
> > > > I am running gcl 2.5 using Debian GNU/Linux.
> > > > 
> > > > Anybody have any advice?  I have found hardly any documentation to help 
> > > > me
> > > > with this.
> > > > 
> > > > Conan K Woods
> > > > address@hidden
> > > > 
> > > > 
> > > > _______________________________________________
> > > > Gcl-devel mailing list
> > > > address@hidden
> > > > http://mail.gnu.org/mailman/listinfo/gcl-devel
> > > > 
> > > > 
> > > 
> > > -- 
> > > Camm Maguire                                              address@hidden
> > > ==========================================================================
> > > "The earth is but one country, and mankind its citizens."  --  Baha'u'llah
> > > 
> > 
> > 
> > _______________________________________________
> > Gcl-devel mailing list
> > address@hidden
> > http://mail.gnu.org/mailman/listinfo/gcl-devel
> > 
> > 
> 
> -- 
> Camm Maguire                                          address@hidden
> ==========================================================================
> "The earth is but one country, and mankind its citizens."  --  Baha'u'llah
>