DRAFT: Synopsis 21: Calling Foreign Code
Tim Nelson <email@example.com> Larry Wall <firstname.lastname@example.org>
Created: 27 Feb 2009 Last Modified: 27 Feb 2009 Version: 1
The document is a draft.
If you read the HTML version, it is generated from the Pod in the specs repository under https://github.com/perl6/specs/blob/master/S21-calling-foreign-code.pod so edit it there in the git repository if you would like to make changes.
Unfortunately, calling foreign code properly is quite platform dependent. This means that parts of the external calling conventions can't be standardised. But the parts that can be standardised are specified here.
use statement allows an external language to be specified in addition to (or instead of) an authority, so that you can use modules from other languages. The
from adverb also parses any additional parts as short-form arguments. For instance:
use Whiteness:from<perl5>:name<Acme::Bleach>:auth<cpan:DCONWAY>:ver<1.12>; use Whiteness:from<perl5 Acme::Bleach cpan:DCONWAY 1.12>; # same thing use libc:from<C>;
XXX We need a discussion of how to link to some of the common platforms
Please post errors and feedback to perl6-language. If you are making a general laundry list, please separate messages by topic.