[cmake-developers] [PATCH] [Module] FindPNG: Add Env Hint via PNG_ROOT

[Brad King]

On 06/27/2014 12:37 PM, Huebl, Axel wrote:
> CMAKE_PREFIX_PATH is indeed an option, too.
> 
> The main intension of the patch is to align the package with the
> standard functionality of other modules (Boost, MPI, HDF5 and similar).

Very few modules provide _ROOT variables, and those that do have them
only for historical reasons AFAIK.

-Brad