[cmake-developers] Docs for CMAKE_INSTALL_PREFIX_INITIALIZED_TO_DEFAULT

[Craig Scott]

There seems to be a number of references online to a variable
named CMAKE_INSTALL_PREFIX_INITIALIZED_TO_DEFAULT which is recommended for
checking if CMAKE_INSTALL_PREFIX has been overridden or not. This variable
is not mentioned in CMake's documentation, but some of those online
references claim it was recommended by CMake devs to use this variable. Is
it formally supported? If so, can documentation be added for it so that
users can have confidence that they are using a supported feature? Even
just something very simple would be enough to meet that need.

Some example references to this:

http://public.kitware.com/pipermail/cmake/2010-December/041135.html

http://stackoverflow.com/a/16076855/1938798


-- 
Craig Scott
Melbourne, Australia
https://crascit.com
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