cmake HAVE_SIOCGLIFCONF examples

CTSRD-CHERI/cheribsd contrib/libpcap/CMakeLists.txt :2225 

try_compile(HAVE_SIOCGLIFCONF ${CMAKE_CURRENT_BINARY_DIR} "${pcap_SOURCE_DIR}/cmake/have_siocglifconf.c" )

asset-group/5ghoul-5g-nr-attacks libs/libpcap/CMakeLists.txt :1457 

try_compile(HAVE_SIOCGLIFCONF ${CMAKE_CURRENT_BINARY_DIR}
                  "${pcap_SOURCE_DIR}/cmake/have_siocglifconf.c")