forked from osmocom/wireshark
138 lines
4.7 KiB
CMake
138 lines
4.7 KiB
CMake
#
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# - Find pcap and winpcap
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# Find the native PCAP includes and library
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#
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# PCAP_INCLUDE_DIRS - where to find pcap.h, etc.
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# PCAP_LIBRARIES - List of libraries when using pcap.
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# PCAP_FOUND - True if pcap found.
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include( FindWSWinLibs )
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FindWSWinLibs( "WpdPack" "PCAP_HINTS" )
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# The 64-bit wpcap.lib is under /x64
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set ( _PLATFORM_SUBDIR "" )
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if( WIN32 AND "${WIRESHARK_TARGET_PLATFORM}" STREQUAL "win64" )
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set ( _PLATFORM_SUBDIR "/x64" )
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endif()
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find_path( PCAP_INCLUDE_DIR
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NAMES
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pcap/pcap.h
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pcap.h
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HINTS
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"${PCAP_HINTS}/include"
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)
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find_library( PCAP_LIBRARY
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NAMES
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pcap
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wpcap
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HINTS
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"${PCAP_HINTS}/lib${_PLATFORM_SUBDIR}"
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)
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include( FindPackageHandleStandardArgs )
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find_package_handle_standard_args( PCAP DEFAULT_MSG PCAP_LIBRARY PCAP_INCLUDE_DIR )
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if( PCAP_FOUND )
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set( PCAP_INCLUDE_DIRS ${PCAP_INCLUDE_DIR} )
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set( PCAP_LIBRARIES ${PCAP_LIBRARY} )
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else()
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set( PCAP_INCLUDE_DIRS )
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set( PCAP_LIBRARIES )
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endif()
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if( PCAP_FOUND )
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#Functions
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include( CMakePushCheckState )
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include( CheckFunctionExists )
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include( CheckVariableExists )
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cmake_push_check_state()
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set( CMAKE_REQUIRED_INCLUDES ${PCAP_INCLUDE_DIRS} )
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set( CMAKE_REQUIRED_LIBRARIES ${PCAP_LIBRARIES} )
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if(WIN32)
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# Prepopulate some values. WinPcap and Npcap always have these and
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# compilation checks on Windows can be slow.
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set(HAVE_PCAP_OPEN_DEAD TRUE)
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set(HAVE_PCAP_FREECODE TRUE)
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set(HAVE_PCAP_BREAKLOOP TRUE)
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set(HAVE_PCAP_CREATE TRUE)
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set(HAVE_PCAP_DATALINK_NAME_TO_VAL TRUE)
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set(HAVE_PCAP_DATALINK_VAL_TO_DESCRIPTION TRUE)
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set(HAVE_PCAP_DATALINK_VAL_TO_NAME TRUE)
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set(HAVE_PCAP_FINDALLDEVS TRUE)
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set(HAVE_PCAP_FREE_DATALINKS TRUE)
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set(HAVE_PCAP_LIB_VERSION TRUE)
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set(HAVE_PCAP_LIST_DATALINKS TRUE)
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set(HAVE_PCAP_SET_DATALINK TRUE)
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set(HAVE_BPF_IMAGE TRUE)
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set(HAVE_PCAP_OPEN TRUE)
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set(HAVE_PCAP_SETSAMPLING TRUE)
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endif(WIN32)
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check_function_exists( "pcap_open_dead" HAVE_PCAP_OPEN_DEAD )
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check_function_exists( "pcap_freecode" HAVE_PCAP_FREECODE )
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#
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# Note: for pcap_breakloop() and pcap_findalldevs(), the autoconf script
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# checked for more than just whether the function exists, it also checked
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# for whether pcap.h declares it; macOS software/security updates can
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# update libpcap without updating the headers.
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#
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check_function_exists( "pcap_breakloop" HAVE_PCAP_BREAKLOOP )
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check_function_exists( "pcap_create" HAVE_PCAP_CREATE )
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if( HAVE_PCAP_CREATE )
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#
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# If we have pcap_create(), we have pcap_set_buffer_size(), and
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# can set the capture buffer size.
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#
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# Otherwise, if this is Windows, we have pcap_setbuff(), and can
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# set the capture buffer size.
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#
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set( CAN_SET_CAPTURE_BUFFER_SIZE TRUE )
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endif()
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check_function_exists( "pcap_datalink_name_to_val" HAVE_PCAP_DATALINK_NAME_TO_VAL )
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check_function_exists( "pcap_datalink_val_to_description" HAVE_PCAP_DATALINK_VAL_TO_DESCRIPTION )
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check_function_exists( "pcap_datalink_val_to_name" HAVE_PCAP_DATALINK_VAL_TO_NAME )
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check_function_exists( "pcap_findalldevs" HAVE_PCAP_FINDALLDEVS )
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check_function_exists( "pcap_free_datalinks" HAVE_PCAP_FREE_DATALINKS )
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check_function_exists( "pcap_get_selectable_fd" HAVE_PCAP_GET_SELECTABLE_FD )
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check_function_exists( "pcap_lib_version" HAVE_PCAP_LIB_VERSION )
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check_function_exists( "pcap_list_datalinks" HAVE_PCAP_LIST_DATALINKS )
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check_function_exists( "pcap_set_datalink" HAVE_PCAP_SET_DATALINK )
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check_function_exists( "bpf_image" HAVE_BPF_IMAGE )
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check_function_exists( "pcap_set_tstamp_precision" HAVE_PCAP_SET_TSTAMP_PRECISION )
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check_function_exists( "pcap_set_tstamp_type" HAVE_PCAP_SET_TSTAMP_TYPE )
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# Remote pcap checks
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check_function_exists( "pcap_open" HAVE_PCAP_OPEN )
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if( HAVE_PCAP_OPEN )
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set( HAVE_PCAP_REMOTE 1 )
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#
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# XXX - this *should* be checked for independently of checking
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# for pcap_open(), as you might have pcap_setsampling() without
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# remote capture support.
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#
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# However, 1) the sampling options are treated as remote options
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# in the GUI and and 2) having pcap_setsampling() doesn't mean
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# you have sampling support. libpcap needs a way to indicate
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# whether a given device supports sampling, and the GUI should
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# be changed to decouple them.
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#
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# (Actually, libpcap needs a general mechanism to offer options
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# for particular devices, and Wireshark needs to use that
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# mechanism. The former is a work in progress.)
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#
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# (Note: another work in progress is support for remote
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# capturing using pcap_create()/pcap_activate(), which we
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# also need to support once it's available.)
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#
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check_function_exists( "pcap_setsampling" HAVE_PCAP_SETSAMPLING )
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endif()
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cmake_pop_check_state()
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endif()
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mark_as_advanced( PCAP_LIBRARIES PCAP_INCLUDE_DIRS )
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