cmake HAVE_GETSPNAM examples

CTSRD-CHERI/cheribsd contrib/libpcap/rpcapd/CMakeLists.txt :25 

check_function_exists(getspnam HAVE_GETSPNAM)

asset-group/5ghoul-5g-nr-attacks libs/libpcap/rpcapd/CMakeLists.txt :24 

check_function_exists(getspnam HAVE_GETSPNAM)