metasploit-framework/external/pcaprub/extconf.rb

require 'mkmf'

if /i386-mswin32/ =~ RUBY_PLATFORM
    pcap_dir        = with_config("pcap-dir", "C:\WpdPack")
    pcap_includedir = with_config("pcap-includedir", pcap_dir + "\\include")
    pcap_libdir     = with_config("pcap-libdir", pcap_dir + "\\lib")

    $CFLAGS  = "-DWIN32 -I#{pcap_includedir}"
    $LDFLAGS = "/link /LIBPATH:#{pcap_libdir}"
    have_library("wpcap", "pcap_open_live")
	have_library("wpcap", "pcap_setnonblock")
else
    have_library("pcap", "pcap_open_live")
	have_library("pcap", "pcap_setnonblock")
end

if ( RUBY_VERSION =~ /^1\.9/ )
	$CFLAGS += " -DRUBY_19"
end

create_makefile("pcaprub")