find_package COMPONENTS

The gflags_TARGET variable contains the name of the originally exported import target. The "gflags" import target contains a copy of the relevant properties of this import target created by CMake. The gflags_LIBRARIES variable can be used to be consistent with other packages, but is otherwise no longer needed. In most cases, "target_link_libraries(foo gflags)" should be used.

Configure and install CMake package configuration file to help find_package locate the gflags package.