Each package helper sets various variables such aaa_FOUND, aaa_INCLUDE_DIR,
and aaa_LIBRARY. Depending on the complexity of the package, these variables
might have different names (eg, OPENSCENEGRAPH_LIBRARIES).
Each package helper sets various variables such aaa_FOUND, aaa_INCLUDE_DIR,
and aaa_LIBRARY. Depending on the complexity of the package, these variables
might have different names (eg, OPENSCENEGRAPH_LIBRARIES).