OpenEuphoria

Re: help! (DLLs)

• Posted by Euman <euman at bellsouth.net> May 11, 2001
• 471 views

I think all the info pertaining to @4 and _0func is in ec.html
that comes with the translator..

declarations are made inside the calling program.
Im confused Matt, what are you talking about.

Euman

----- Original Message ----- 
From: "Matthew Lewis" <matthewwalkerlewis at YAHOO.COM>
To: "EUforum" <EUforum at topica.com>
Subject: RE: help! (DLLs)


> 
> 
> 
> > -----Original Message-----
> > From: sephiroth _ [mailto:euman2376 at yahoo.com]
> 
> > i tried that, and no change. btw, i pedump'ed it and apparently it
> > doesn't add underscores, but all compilers prepend underscores to
> > function names
> 
> I just made a little dll (dll.dll) with lcc by translating and running
> emake.  No def file or anything, and it returned the name of the function
> with an underscore and @4 appended (1 arg):
> 
> -- begin dll.ew
> global function huh( atom x )
> return rand(5)
> end function
> -- end dll.ew
> 
> Eu  function:  huh( atom x )
> C   function:  _0huh( int x )
> DLL function:  __0huh@4
> 
> Now, I tried a DEF file (dll.def):
> 
> EXPORTS
> huh = _0huh
> 
> and rebuilt the dll.  LCC still exported __0huh@4, but also exported huh.
> Removing the __declspec(dllexport) from the function definition (in dll.c)
> and the prototype in main_.h, and the only thing exported was huh.  The same
> thing worked with Borland (I don't have Watcom).  LCC seems to need to have
> the .def file included in the call to the linker, while Borland finds the
> .def file on its own.
> 
> Rob, I think it would be better to not declare anything
> _declspec(dllexport), but to create a def file with the original Eu routine
> names in an export file.  It would make things much cleaner, and shouldn't
> be too difficult.  It would also make it easy to include/exclude routines
> from being exported (for instance, if win32lib is included in the source for
> the dll, it's probably not necessary to export all the routines in
> win32lib).
> 
> Matt Lewis
> 
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<snip>