Re: On Lua and C Modules (was Re: [ANN] luafaq.org source on GitHub)
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- Subject: Re: On Lua and C Modules (was Re: [ANN] luafaq.org source on GitHub)
- From: Roberto Ierusalimschy <roberto@...>
- Date: 2013年6月28日 18:32:11 -0300
> I'm surprised that Lua doesn't look for just
>
> luaopen()
>
> as part of the search mechanism. It's a dynamic library---there is no
> problem what-so-ever in loading multiple shared libs with functions of the
> same name [5] so as a fall-back, just calling luaopen() would seem to be
> obvious [6]. I'm just curious as to why that wasn't done. If it had, then
> it would be easy to move, say, "org.conman.env" [7] to another location.
Modules are not always linked dynamically (see, for instance, the
standard Lua libraries). With a single name, one would not be able to
statically link a set of modules to a program.
(Moreover, I am not sure your experience number [5] is portable. IIRC,
we had problems in the past with some systems that signalled name
conflicts even with dynamic libraries.)
-- Roberto