Re: dlopen under cygwin

[Charles Wilson <cygwin at cwilson dot fastmail dot fm>]

Gerrit P. Haase wrote:
> Maarten wrote:
>
>
> > Hi all,
>
>
> > Is dlopen() & friends supported under cygwin? If so, is the DLL that 
> > gets loaded using dlopen() a regular Win32 DLL, or a 'special' type of
> > cygwin DLL?
>
>
> dlopen() works and one should use it.
>
>
> > Reason I ask it that (while trying to get 'plugins' to work under 
> > cygwin) I had a look at the gmodule source code of glib, and it seems 
> > that gmodule uses regular Win32 LoadLibrary() calls to load the DLL, 
> > instead of calling dlopen(). I was wondering if that it actually correct.
>
>
> This seems to work too, but is it not portable, dlopen() is used for
> Linux applications and needs not to be ported when building with
> Cygwin, it just works the same way as for Linux.

Except, as I mentioned before, cygwin's glib2 package is built in such a 
way that it, too, uses LoadLibrary directly and not dlopen.  (IIRC, 
doing it "right" requires a patch to the gmodule stuff -- and I agree 
with the maintainer's decision to go ahead with the glib2 package 
rollout with LoadLibrary and delay the dlopen stuff until later, since I 
raised the flag on the issue so late in the game).

I only mention this glib issue because the original poster had already 
indicated he downloaded and investigated glib...and I wanted to clarify 
why even the cygwin version currently uses LoadLibrary -- even tho 
Gerrit's statement that "you should use it [dlopen]" is correct.

--
Chuck

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