Comments on building tcl/tk for AMD64 with the MS SDK compiler
==============================================================

I did have to build tcl/tk manually.

First, I had to build the nmakehlp.exe helper utility manually by executing
   cl nmakehlp.c /link bufferoverflowU.lib
in both the tcl8.4.12\win and tk8.4.12\win directories.

Second, the AMD64 compiler refuses to compile the file
tcl8.4.12\generic\tclExecute.c because it insists on using intrinsics
for the 'ceil' and 'floor' functions:

  ..\generic\tclExecute.c(394) : error C2099: initializer is not a constant
  ..\generic\tclExecute.c(398) : error C2099: initializer is not a constant

I did comment out these lines; an alternative would have been to use
the /Oi- compiler flag to disable the intrinsic functions.
The commands then used were these:

   svn export http://svn.python.org/projects/external/tcl8.4.12
   cd tcl8.4.12\win
   REM
   echo patch the tcl8.4.12\generic\tclExecute.c file
   pause
   REM
   cl nmakehlp.c /link bufferoverflowU.lib
   nmake -f makefile.vc MACHINE=AMD64
   nmake -f makefile.vc INSTALLDIR=..\..\tcltk install
   cd ..\..
   svn export http://svn.python.org/projects/external/tk8.4.12
   cd tk8.4.12\win
   cl nmakehlp.c /link bufferoverflowU.lib
   nmake -f makefile.vc TCLDIR=..\..\tcl8.4.12 MACHINE=AMD64
   nmake -f makefile.vc TCLDIR=..\..\tcl8.4.12 INSTALLDIR=..\..\tcltk install
   cd ..\..