[CMake] Re-executing CMake from the Makefile.

[Bill Hoffman]

Óscar Fuentes wrote:
> Currently, when `make' is executed and a CMakeList.txt file is out of
> date, `cmake' is automatically invoked and then `make' continues. Is it
> possible to do this (on a reliable way) with an arbitrary file?
> 
> I need to re-execute `cmake' whenever certain file changes. I wonder if
> is possible to do this from `make' itself, so the user does not need to
> remember that he must execute `cmake' first.
> 
If the file you depend on is part of the input to cmake then cmake will 
do that automatically.  You could use the configure_file command to do 
this.  If you did something like this:

  configure_file(/my/file/input dummyout)

Then when ever /my/file/input changed cmake would re-run at make time.

-Bill