Re: "unbound variable"
On Mon, June 27, 2011 05:40, nalaginrut wrote: > I think you need to import this symbol in your module, in this case, I > think it's mapdisplay.scm. If get-map's not within a module, you'd need > to get this symbol with "dynamic-link" and it's friends. It's in the top-level module. | guile> (apropos "get-map") | (guile-user): get-map # My extensions are statically linked into a Scheme shell executable. Do I need to extra-import top-level functions into my Scheme module? How do I do that? /Tomas >> Hi all, >> >> I have an extended Guile interpreter with a C function "get-map", >> defined by "scm_c_define_gsubr", that I then try to use in the >> (pure Scheme) module "mapdisplay", with the following result: >> >> | mapdisplay.scm:36:12: In expression (get-map wg name): >> | mapdisplay.scm:36:12: Unbound variable: get-map >> | ABORT: (unbound-variable) >> | guile> get-map >> | # >> | guile> >> >> Any ideas what is happening here? How can I debug it? >> >> /Tomas
Re: "unbound variable"
> On Mon, June 27, 2011 05:40, nalaginrut wrote: > > I think you need to import this symbol in your module, in this case, I > > think it's mapdisplay.scm. If get-map's not within a module, you'd need > > to get this symbol with "dynamic-link" and it's friends. > > It's in the top-level module. > > | guile> (apropos "get-map") > | (guile-user): get-map # > > My extensions are statically linked into a Scheme shell executable. > > Do I need to extra-import top-level functions into my Scheme module? > How do I do that? > > /Tomas I can't give accurate answer because you provided less information. So I just give a guess: If you have wrapped a module in mapdisplay.scm, you'd have imported some symbols out of this module. I know you can see get-map in REPL's "current-module", but mapdisplay can't see it in it's own "current-module". They are different. If you write this get-map within a module, you may use "#:use-module" in mapdisplay.scm. If not, you need to import it from your .so file with FFI such as "dynamic-link". You may checkout it out in the manual. -- GNU Powered it GPL Protected it GOD Blessed it HFG - NalaGinrut --hacker key-- v4sw7CUSMhw6ln6pr8OSFck4ma9u8MLSOFw3WDXGm7g/l8Li6e7t4TNGSb8AGORTDLMen6g6RASZOGCHPa28s1MIr4p-x hackerkey.com ---end key---
Re: "unbound variable"
Hi again, Thanks for the help so far. On Mon, June 27, 2011 10:38, nalaginrut wrote: > I can't give accurate answer because you provided less information. So I > just give a guess: > If you have wrapped a module in mapdisplay.scm, you'd have imported some > symbols out of this module. I know you can see get-map in REPL's > "current-module", but mapdisplay can't see it in it's own > "current-module". They are different. > If you write this get-map within a module, you may use "#:use-module" in > mapdisplay.scm. If not, you need to import it from your .so file with > FFI such as "dynamic-link". You may checkout it out in the manual. Well, as I tried to explain, "get-map" is statically linked into the executable, defined with "scm_c_define_gsubr" which is called from the "inner_main" that is passed to "scm_boot_guile". I don't think I should have to also dynamically link it. Do I need to do another "define_gsubr" (or whatever) from inside mapdisplay? /Tomas >> On Mon, June 27, 2011 05:40, nalaginrut wrote: >> > I think you need to import this symbol in your module, in this case, I >> > think it's mapdisplay.scm. If get-map's not within a module, you'd >> need >> > to get this symbol with "dynamic-link" and it's friends. >> >> It's in the top-level module. >> >> | guile> (apropos "get-map") >> | (guile-user): get-map # >> >> My extensions are statically linked into a Scheme shell executable. >> >> Do I need to extra-import top-level functions into my Scheme module? >> How do I do that? >> >> /Tomas
Re: "unbound variable"
> Hi again, > > Thanks for the help so far. > > On Mon, June 27, 2011 10:38, nalaginrut wrote: > > I can't give accurate answer because you provided less information. So I > > just give a guess: > > If you have wrapped a module in mapdisplay.scm, you'd have imported some > > symbols out of this module. I know you can see get-map in REPL's > > "current-module", but mapdisplay can't see it in it's own > > "current-module". They are different. > > If you write this get-map within a module, you may use "#:use-module" in > > mapdisplay.scm. If not, you need to import it from your .so file with > > FFI such as "dynamic-link". You may checkout it out in the manual. > > Well, as I tried to explain, "get-map" is statically linked into the > executable, defined with "scm_c_define_gsubr" which is called from the > "inner_main" that is passed to "scm_boot_guile". > > I don't think I should have to also dynamically link it. > > Do I need to do another "define_gsubr" (or whatever) from inside mapdisplay? > > /Tomas > Well, I see your situation. And I must say that I don't blend the extension with executive entry file. So I'm not sure whether a symbol imported in inner_main directly would be available in every module. -- GNU Powered it GPL Protected it GOD Blessed it HFG - NalaGinrut --hacker key-- v4sw7CUSMhw6ln6pr8OSFck4ma9u8MLSOFw3WDXGm7g/l8Li6e7t4TNGSb8AGORTDLMen6g6RASZOGCHPa28s1MIr4p-x hackerkey.com ---end key---
Re: "unbound variable"
"Tomas By" writes:
> I have an extended Guile interpreter with a C function "get-map",
> defined by "scm_c_define_gsubr", that I then try to use in the
> (pure Scheme) module "mapdisplay", with the following result:
>
> [snip]
>
> Any ideas what is happening here? How can I debug it?
Having read the rest of this thread so far, I suggest that you put your
built-in functions into a module which can then be loaded by your pure
Scheme functions.
You need to do something like this:
static SCM
my_func (SCM arg)
{
/* ... blah blah ... */
}
static void
init_builtins_module ()
{
scm_c_define_gsubr ("my-func", 1, 0, 0, my_func);
scm_c_export ("my-func", NULL);
}
void
init_builtins ()
{
scm_c_define_module ("myapp builtins",
init_builtins_module,
NULL);
}
Then in your pure Scheme module, you can add:
(use-modules (myapp builtins))
I hope that helps.
Regards,
Peter
--
Peter Brett
Remote Sensing Research Group
Surrey Space Centre
Re: "unbound variable"
On 27 June 2011 04:41, Peter Brett wrote: > "Tomas By" writes: > >> I have an extended Guile interpreter with a C function "get-map", >> defined by "scm_c_define_gsubr", that I then try to use in the >> (pure Scheme) module "mapdisplay", with the following result: >> >> [snip] >> >> Any ideas what is happening here? How can I debug it? > > Having read the rest of this thread so far, I suggest that you put your > built-in functions into a module which can then be loaded by your pure > Scheme functions. Having used scm_c_define_gsubr in three different projects now, I'l disagree .. never had to create a module to use it ... Not sure what the bug is, though ... does get-map work if you don't use it within the module? Can you verify it works in some simple way? --linas
Re: "unbound variable"
On Mon, June 27, 2011 23:44, Linas Vepstas wrote: > Not sure what the bug is, though ... does get-map work > if you don't use it within the module? Can you verify it works > in some simple way? yes it works fine, except from inside the module.
