Re: Use of libobjc from gcc 4.1 with MinGW

[Helge Hess]

On Mar 21, 2007, at 17:52, Xavier Glattard wrote:
> Why the hell should libobjc be build as a dll ???? ;-)

Don't know whether this was really a joke ;-)

Anyways, its *very* important that libobjc is built as a DLL if you  
build any other ObjC library/framework/bundle as a shared object.  
Otherwise you end up with multiple ObjC runtimes in a single  
application! This has cost me a LOT of time in the past because its  
an easy to make mistake.

DLLs do not work like a shared library on Unix, they are much more  
separated (which is why you need the DLL *and* the static stub  
library to access the actual contents of a DLL). A DLL gets its own  
memory in Windows, its almost like a separate process.

Notably thats actually a very cool feature for using Objective-C for  
Windows development. Because ObjC stuff is bound dynamically using  
the ObjC runtime, you don't need to fiddle as much with Windows  
linking as with plain C or C++.

Greets,
  Helge
--
Helge Hess
http://www.helgehess.eu/