cmake/modules/FindPCAP.cmake

   1 #
   2 # - Find pcap and winpcap
   3 # Find the native PCAP includes and library
   4 #
   5 #  PCAP_INCLUDE_DIRS - where to find pcap.h, etc.
   6 #  PCAP_LIBRARIES    - List of libraries when using pcap.
   7 #  PCAP_FOUND        - True if pcap found.
   8
   9 include( FindWSWinLibs )
  10 FindWSWinLibs( "WpdPack" "PCAP_HINTS" )
  11
  12 find_path( PCAP_INCLUDE_DIR
  13   NAMES
  14   pcap/pcap.h
  15   pcap.h
  16   HINTS
  17     "${PCAP_HINTS}/include"
  18 )
  19
  20 find_library( PCAP_LIBRARY
  21   NAMES
  22     pcap
  23     wpcap
  24   HINTS
  25     "${PCAP_HINTS}/lib"
  26 )
  27
  28
  29 include( FindPackageHandleStandardArgs )
  30 find_package_handle_standard_args( PCAP DEFAULT_MSG PCAP_INCLUDE_DIR PCAP_LIBRARY )
  31
  32 if( PCAP_FOUND )
  33   set( PCAP_INCLUDE_DIRS ${PCAP_INCLUDE_DIR} )
  34   set( PCAP_LIBRARIES ${PCAP_LIBRARY} )
  35 else()
  36   set( PCAP_INCLUDE_DIRS )
  37   set( PCAP_LIBRARIES )
  38 endif()
  39
  40 #Functions
  41 include( CMakePushCheckState )
  42 include( CheckFunctionExists )
  43 include( CheckVariableExists )
  44
  45 cmake_push_check_state()
  46 set( CMAKE_REQUIRED_INCLUDES ${PCAP_INCLUDE_DIRS} )
  47 set( CMAKE_REQUIRED_LIBRARIES ${PCAP_LIBRARIES} )
  48
  49 check_function_exists( "pcap_open_dead" HAVE_PCAP_OPEN_DEAD )
  50 check_function_exists( "pcap_freecode" HAVE_PCAP_FREECODE )
  51 #
  52 # Note: for pcap_breakloop() and pcap_findalldevs(), the autoconf script
  53 # checks for more than just whether the function exists, it also checks
  54 # for whether pcap.h declares it; Mac OS X software/security updates can
  55 # update libpcap without updating the headers.
  56 #
  57 check_function_exists( "pcap_breakloop" HAVE_PCAP_BREAKLOOP )
  58 /* FIXME: The code (at least) in dumpcap assumes that PCAP_CREATE is not
  59  *        available on Windows */
  60 if( NOT WIN32 )
  61   check_function_exists( "pcap_create" HAVE_PCAP_CREATE )
  62 endif()
  63 check_function_exists( "pcap_datalink_name_to_val" HAVE_PCAP_DATALINK_NAME_TO_VAL )
  64 check_function_exists( "pcap_datalink_val_to_description" HAVE_PCAP_DATALINK_VAL_TO_DESCRIPTION )
  65 check_function_exists( "pcap_datalink_val_to_name" HAVE_PCAP_DATALINK_VAL_TO_NAME )
  66 check_function_exists( "pcap_findalldevs" HAVE_PCAP_FINDALLDEVS )
  67 check_function_exists( "pcap_free_datalinks" HAVE_PCAP_FREE_DATALINKS )
  68 check_function_exists( "pcap_get_selectable_fd" HAVE_PCAP_GET_SELECTABLE_FD )
  69 check_function_exists( "pcap_lib_version" HAVE_PCAP_LIB_VERSION )
  70 check_function_exists( "pcap_list_datalinks" HAVE_PCAP_LIST_DATALINKS )
  71 check_function_exists( "pcap_set_datalink" HAVE_PCAP_SET_DATALINK )
  72 check_function_exists( "bpf_image" HAVE_BPF_IMAGE )
  73 # Remote pcap checks
  74 check_function_exists( "pcap_open" H_PCAP_OPEN )
  75 check_function_exists( "pcap_findalldevs_ex" H_FINDALLDEVS_EX )
  76 check_function_exists( "pcap_createsrcstr" H_CREATESRCSTR )
  77 if( H_PCAP_OPEN AND H_FINDALLDEVS_EX AND H_CREATESRCSTR )
  78   set( HAVE_PCAP_REMOTE 1 )
  79   set( HAVE_REMOTE 1 )
  80 endif()
  81
  82 cmake_pop_check_state()
  83
  84 mark_as_advanced( PCAP_LIBRARIES PCAP_INCLUDE_DIRS )