Re: getting the file extension of a shared object

[Vincent Torri]

Hey,

On Mon, 22 Jun 2009, David Fang wrote:

> > when a configure frile is created, shretx_cmds is defined to the file 
> > extension of a shared object, wrt the platform (.dll for windows, .so for 
> > unix, ...).
> >
> > What I can do is AC_DEFINE a macro using $shrext_cmds and using that macro 
> > in my code.
> >
> > Is there a better way to achieve that ?
>
> AC_DEFINE works well for anything that preprocesses config.h.
> You could also store the result like so:
>
> SHREXT=$shrext_cmds
> AC_SUBST(SHREXT)

ok.  Then I prefer AC_DEFINE (as we already include config.h, no need to 
make a specific file just for what I want).

If using shrext_cmds is a good way, then it's fine for me. I was afraid 
that it was something to not use because the name could change in the 
future, or something like that.

> As as a side question: are you trying to do something that libtool/libltdl 
> could handle?  libltdl's lt_dlopenext() loads modules given the base name 
> without the file extension, which takes some pain out of portability.

libltdl is of no use for our purposes. Thanks anyway.

regards

Vincent Torri