cmake SDL2_net examples

team-eternity/eternity cmake/ExternalLibraries.cmake :256 

find_package(SDL2_net)

TurningWheel/Barony CMakeLists.txt :343 

find_package(SDL2_net REQUIRED)

Waterdish/Shipwright-Android soh/CMakeLists.txt :316 

find_package(SDL2_net)