[CMake] touch flag once all (target) sucess

[t m]

Hi All,

I would like to touch flag file in the CMAKE_BINARY_DIR once the
target all is executed with sucess.
Since currently I'm not able to specify the dependency to this
build-in target I do not have any hook to recognize if all sucess and
to touch file.

1. Does anyone knows any hint that can help me with this issue
2. Question to CMake developers/maintainers: Is there any plan  to
implement this ticket in near future:
http://www.cmake.org/Bug/view.php?id=8438#c26520

regards, T Majchrowski.