> I'm missing the declaration of  extern char **environ;  in a system
> header file. May be it should be in stdlib.h (or unistd.h?).

As far as I know, there are no standards that require environ to be
declared in any header file.  Most UNIX and UN*X compatibile systems do
not define it either.  

Since environ is considered to be an obsolete interface, I recommend that
its definition not be added to any of NetBSD's header files. 

	--jtc