On Wed, 9 Dec 2015 17:36:43 -0200 Felipe Magno de Almeida
<[email protected]> said:

> On Wed, Dec 9, 2015 at 3:36 AM, Carsten Haitzler <[email protected]> wrote:
> > On Tue, 8 Dec 2015 14:51:01 -0800 Cedric BAIL <[email protected]> said:
> >
> >> On Mon, Dec 7, 2015 at 10:17 PM, Carsten Haitzler <[email protected]>
> >> wrote:
> >> > On Mon, 7 Dec 2015 20:54:02 -0200 Felipe Magno de Almeida
> >> > <[email protected]> said:
> >> >> We have a policy of not auto-detection for configure and as little
> >> >> optional options as possible.
> >> >>
> >> >> However, the JavaScript binding is a complicated beast because it can
> >> >> be compiled against node.js, or against libv8, or against libv8 and
> >> >> libuv. And this option must be made at autotools configure time.
> >> >>
> >> >> Cedric has proposed the generation would always happen to a specific
> >> >> sub-directory where it could be configured separately and compiled.
> >> >> However, I think this complicates things and I don't really see much
> >> >> benefit.
> >> >>
> >> >> Currently, I have added a --with-js option which can be used as:
> >> >> --with-js=nodejs/--with-js=libv8/--with-js=libuv.
> >> >
> >> > can we do this runtime with dlopen/dlsym fun?
> >>
> >> Highly unlikely due to C++ mangling and the amount of inlined code
> >> difference (think template and friends).
> >
> > not v8 - we have to compile against v8 headers and a libv8.. but what about
> > libuv, other node.js symbols that are exported that we might rely on. these?
> >
> > v8 is common here and we rely on c++ api/abi and linking to build - so that
> > stays as-is, but the othe rbits.. can we dl*() them at ruuntime?
> 
> I think libuv it seems we could. I'm not sure about node.js. I'll have to
> check.
> 
> Do you mean to compile-in node.js and libuv always? That makes sense.

yes. then we dont have to compile-time choose if its pure v8 or v8+node+uv

> The only problem is where to find the v8 header. The location priority
> for the headers is different depending if it is compilled for node.js
> or not. If it uses the wrong header, it will break because it is not
> ABI-compatible.

aaaaah ok. that's an issue. hmmm. and the v8 shipped with node may differ from
a libv8 installed and even if we were to ship our own v8 headers "magically" -
these may not match either. argh. ok. painful.

one thing here. a non-node version is far less useful. without a runtime, just
linking against v8 is pretty useless, unless we provide that runtime
ourselves... right?

> Regards,
> -- 
> Felipe Magno de Almeida
> 
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-- 
------------- Codito, ergo sum - "I code, therefore I am" --------------
The Rasterman (Carsten Haitzler)    [email protected]


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