Path to GNUstep's library

[Lloyd Dupont]

I wat to improve my Stack Trace code by auutomatically loading symbol for 
gnustep-base.dll & gnustep-gui.dll

I have written a code like that:
static NSString * pathToLib(NSString * lib)
{
NSString * dir = [NSSearchPathForDirectoriesInDomains(GSToolsDirectory, 
NSSystemDomainMask, YES) objectAtIndex: 0];
lib = [dir stringByAppendingPathComponent: lib];

if([[NSFileManager defaultManager] fileExistsAtPath: lib])
 return lib;
return nil;
}
NSString * libBase = pathToLib(@"gnustep-base.dll");
NSString * libgui = pathToLib(@"gnustep-gui.dll");

This work but is very windowish... (xxx.dll)
Can anyone could think of a better solutuion?