cmake STDLIBS_HAVE_GETSERVENT examples

CTSRD-CHERI/cheribsd contrib/tcpdump/CMakeLists.txt :480 

check_function_exists(getservent STDLIBS_HAVE_GETSERVENT)

CTSRD-CHERI/cheribsd contrib/tcpdump/CMakeLists.txt :483 

else(STDLIBS_HAVE_GETSERVENT)

CTSRD-CHERI/cheribsd contrib/tcpdump/CMakeLists.txt :493 

endif(STDLIBS_HAVE_GETSERVENT)