If your Tcl/Tk files are installed in a non-standard path,
simply try something like this:

./configure --with-tkinclude=/usr/local/tcl8.3.3/include --with-tclinclude=/usr/local/tcl8.3.3/include --with-tklib=/usr/local/tcl8.3.3/lib --with-tcllib=/usr/local/tcl8.3.3/lib
