[CMake] find_library while cross compiling?

[Robert Dailey]

I'm on Windows and I am cross compiling for Android NDK. I use
find_library() with PATHS to hunt down some libssl.a files, plus a few
others.

However, find_library() says it can't find them. I'm assuming this is
because I'm on Windows and it doesn't recognize *.a files as a valid
library on that platform. Is there a way to make CMake search
libraries based on the platform the target is being compiled for?