cmake HAVE_PCAP_BREAKLOOP examples

usb-tools/USBProxy-legacy src/cmake/modules/FindPCAP.cmake :113 

CHECK_FUNCTION_EXISTS("pcap_breakloop" HAVE_PCAP_BREAKLOOP)

boundary/wireshark cmake/modules/FindPCAP.cmake :122 

CHECK_FUNCTION_EXISTS("pcap_breakloop" HAVE_PCAP_BREAKLOOP)

CTSRD-CHERI/cheribsd contrib/tcpdump/CMakeLists.txt :818 

check_function_exists(pcap_breakloop HAVE_PCAP_BREAKLOOP)

gnss-sdr/gnss-sdr cmake/Modules/FindPCAP.cmake :117 

check_function_exists("pcap_breakloop" HAVE_PCAP_BREAKLOOP)