cmake HAVE_STATFS examples

htcondor/htcondor build/cmake/CondorConfigure.cmake :371 

check_function_exists("statfs" HAVE_STATFS)

Ravbug/UnityHubNative wxWidgets/build/cmake/setup.cmake :270 

elseif(HAVE_STATFS)

wxWidgets/wxWidgets build/cmake/setup.cmake :270 

elseif(HAVE_STATFS)