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FindPCAP.cmake
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FindPCAP.cmake
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###################################################################
#
# Copyright (c) 2006 Frederic Heem, <frederic.heem@telsey.it>
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
#
# * Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
#
# * Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in
# the documentation and/or other materials provided with the
# distribution.
#
# * Neither the name of the Telsey nor the names of its
# contributors may be used to endorse or promote products derived
# from this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.
#
###################################################################
# - Find pcap
# Find the PCAP includes and library
# http://www.tcpdump.org/
#
# The environment variable PCAPDIR allows to specficy where to find
# libpcap in non standard location.
#
# PCAP_INCLUDE_DIRS - where to find pcap.h, etc.
# PCAP_LIBRARIES - List of libraries when using pcap.
# PCAP_FOUND - True if pcap found.
IF(EXISTS $ENV{PCAPDIR})
FIND_PATH(PCAP_INCLUDE_DIR
NAMES
pcap/pcap.h
pcap.h
PATHS
$ENV{PCAPDIR}
NO_DEFAULT_PATH
)
FIND_LIBRARY(PCAP_LIBRARY
NAMES
pcap
PATHS
$ENV{PCAPDIR}
NO_DEFAULT_PATH
)
ELSE(EXISTS $ENV{PCAPDIR})
FIND_PATH(PCAP_INCLUDE_DIR
NAMES
pcap/pcap.h
pcap.h
)
FIND_LIBRARY(PCAP_LIBRARY
NAMES
pcap
)
ENDIF(EXISTS $ENV{PCAPDIR})
SET(PCAP_INCLUDE_DIRS ${PCAP_INCLUDE_DIR})
SET(PCAP_LIBRARIES ${PCAP_LIBRARY})
IF(PCAP_INCLUDE_DIRS)
MESSAGE(STATUS "Pcap include dirs set to ${PCAP_INCLUDE_DIRS}")
ELSE(PCAP_INCLUDE_DIRS)
MESSAGE(FATAL " Pcap include dirs cannot be found")
ENDIF(PCAP_INCLUDE_DIRS)
IF(PCAP_LIBRARIES)
MESSAGE(STATUS "Pcap library set to ${PCAP_LIBRARIES}")
ELSE(PCAP_LIBRARIES)
MESSAGE(FATAL "Pcap library cannot be found")
ENDIF(PCAP_LIBRARIES)
#Functions
INCLUDE(CheckFunctionExists)
SET(CMAKE_REQUIRED_INCLUDES ${PCAP_INCLUDE_DIRS})
SET(CMAKE_REQUIRED_LIBRARIES ${PCAP_LIBRARIES})
CHECK_FUNCTION_EXISTS("pcap_breakloop" HAVE_PCAP_BREAKLOOP)
CHECK_FUNCTION_EXISTS("pcap_datalink_name_to_val"
HAVE_PCAP_DATALINK_NAME_TO_VAL)
CHECK_FUNCTION_EXISTS("pcap_datalink_val_to_name"
HAVE_PCAP_DATALINK_VAL_TO_NAME)
CHECK_FUNCTION_EXISTS("pcap_findalldevs" HAVE_PCAP_FINDALLDEVS)
CHECK_FUNCTION_EXISTS("pcap_freecode" HAVE_PCAP_FREECODE)
CHECK_FUNCTION_EXISTS("pcap_get_selectable_fd"
HAVE_PCAP_GET_SELECTABLE_FD)
CHECK_FUNCTION_EXISTS("pcap_lib_version" HAVE_PCAP_LIB_VERSION)
CHECK_FUNCTION_EXISTS("pcap_list_datalinks" HAVE_PCAP_LIST_DATALINKS)
CHECK_FUNCTION_EXISTS("pcap_open_dead" HAVE_PCAP_OPEN_DEAD)
CHECK_FUNCTION_EXISTS("pcap_set_datalink" HAVE_PCAP_SET_DATALINK)
#Is pcap found ?
IF(PCAP_INCLUDE_DIRS AND PCAP_LIBRARIES)
SET( PCAP_FOUND "YES" )
ENDIF(PCAP_INCLUDE_DIRS AND PCAP_LIBRARIES)
MARK_AS_ADVANCED(
PCAP_LIBRARIES
PCAP_INCLUDE_DIRS
)