James Zern 471c5755fc cmake: fix gif lib detection when cross compiling
GIF find_package only locates the header and library, it doesn't fail
compile tests when detecting the version, but falls back to 3 (as of at
least cmake 3.7.2). Make sure the library links to avoid incorrect
detection when cross compiling.

Change-Id: I0224180bbdf800ab261a9333236730b23c006e69
2017-07-06 15:33:31 -07:00
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