> I'm still trying to get tk_to_gem to work on my 64-bit windows.  I made 
> sure devkit was installed, and gcc --version works.  I'm getting the 
> same error message.  I can't seem to locate the mkmf.log file.  It 
> doesn't even seem to be created (I did a search of my entire harddrive 
> and only found mkmf.log files for other installs I've done).

What's the full output? Do you have 32 bit versions of tk and ruby 
installed, I assume?
-rp
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