[Gcl-devel] Re: How to link object files generated by GCL

[Camm Maguire]

The following message is a courtesy copy of an article
that has been posted to comp.lang.lisp as well.

Greetings!

gcl
>(load "foo.o")
>(si::save-system "my-executable")

Take care,

address@hidden writes:

> I'm actually having hell doing this myself!
> 
> I'm trying to have a Lisp function compiled down to something I can
> address in C. My biggest issue so far is getting the GCL .o file to
> link in properly with my C binary. Calling "nm" on the GCL object file
> reveals a number of unlinked symbols:
> 
>          U call_or_link
>          U do_init
> 00000000 T init_code
> 00000020 t L1
> 00000008 d Lnk0
> 00000100 t LnkT0
>          U number_compare
>          U number_minus
>          U number_times
>          U small_fixnum_table
>          U vs_base
>          U vs_limit
>          U vs_overflow
>          U vs_top
> 00000000 d VVi
> 
> but I have no idea where these come from. I assume they're provided by
> something in GCL.
> 
> Does anyone know what file I must link in with this to get this to
> compile?
> 
> Many thanks!
> 
> Jay P.
> 
> On Mar 5, 6:06 pm, address@hidden wrote:
> > Hi all,
> >     I've been trying to write a lisp function that will compile down
> > to a native function that can be called from C.  I'm wanting to find a
> > way to extend the ruby language with lisp, and in order to do this I
> > will have to write some C wrapper code around the lisp code.  I have
> > read that GCL supports compiling lisp code down to native machine code
> > and this is exactly what I'm looking for, however when I compile the
> > lisp code with GCL it creates an object file.  Now I know that the
> > object file can be loaded by GCL but this is not what I am wanting to
> > do, I want to find out what that object file needs to be linked
> > against so that I can call the compiled lisp function from a seperate
> > C program that will be used as a wrapper.  Does anyone know how to do
> > this? I have been searching for an answer but it seems that every time
> > someone asks this question he is never answered but rather told to
> > just save an image of gcl to produce an executable, however this is
> > not what I seek to do.  If anyone has any insight as to this problem
> > please let me know.
> >
> > Thanks,
> >       Mike M.
> 
> 

-- 
Camm Maguire                                            address@hidden
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"The earth is but one country, and mankind its citizens."  --  Baha'u'llah