cmake HAVE_STATFS64 examples

brndnmtthws/conky cmake/ConkyPlatformChecks.cmake :39 

check_symbol_exists(statfs64 "sys/mount.h" HAVE_STATFS64)

brndnmtthws/conky cmake/ConkyPlatformChecks.cmake :41 

check_symbol_exists(statfs64 "sys/statfs.h" HAVE_STATFS64)