RE: [rt.cpan.org #56721] CPAN build of Tcl fails on darwin x86_64

> > There is a 
> /System/Library/Frameworks/Tcl.framework/Versions/8.4/libtclst
> ub8.4.a that
> > contains all three architectures, so I assume it would be 
> better to use this instead and fall back to the included 
> version when it's not available?
> > Both Tcl and Tkx test and install flawlessly if I make a 
> symlink to the system version of the library.
> 
> Correct, using the system one should work fine.  Note that 
> the system one in Snow Leopard is a Cocoa-based Tk (as 
> opposed to the Carbon one in Leopard and what is currently in 
> ActiveTcl 8.5).  ActiveTcl will ship the Cocoa-based one when 
> we move to 8.6.  Don't mix Snow Leopard and AT 8.5 Tk 
> extensions - it may lead to bad results.

Maybe there is something to be done at Makefile.PL time?
(although it is already $^O-forest)

Or what else should be done?

Best regards,
Vadim.