FindGIF

This finds the GIF library (giflib)

The module defines the following variables:

GIF_FOUND
True if giflib was found
GIF_LIBRARIES
Libraries to link to in order to use giflib
GIF_INCLUDE_DIR
where to find the headers
GIF_VERSION
3, 4 or a full version string (eg 5.1.4) for versions >= 4.1.6

The minimum required version of giflib can be specified using the standard syntax, e.g. find_package(GIF 4)

$GIF_DIR is an environment variable that would correspond to the ./configure –prefix=$GIF_DIR

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Licensed under the BSD 3-clause License.
https://cmake.org/cmake/help/v3.7/module/FindGIF.html