Purpose: accumulate '''commonly''' encountered problems, and their
solutions, for people attempting to build Tcl extensions.

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Seen many times on comp.lang.tcl:

   * Q. I always get the following error from ./configure:
 
 checking for Tcl configuration... configure: warning: Can't find Tcl
 configuration definitions
 

   * A. You will need to invoke with a command line like:

 /path/to/iwidgets/configure \
        --with-tcl=.../tcl84 \
        --with-tk=.../tk84 \
        --with-itcl=.../itcl

where those are the build and/or *Config.sh containing dirs.
See the configure --help for more info.

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[Category Deployment]