-pcap_dep = dependency('pcap', required: false)
-if pcap_dep.found() == true
- ext_deps += pcap_dep
-elif find_program('pcap-config', required: false).found() == true
- ext_deps += cc.find_library('pcap')
+pcap_dep = cc.find_library('pcap', required: false)
+if pcap_dep.found() and cc.has_header('pcap.h', dependencies: pcap_dep)
+ build = true