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#############################################################################
# Copyright (c) 2016 Balabit
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2.1 of the License, or (at your option) any later version.
#
# This library is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this library; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
#
# As an additional exemption you are allowed to compile & link against the
# OpenSSL libraries as published by the OpenSSL project. See the file
# COPYING for details.
#
#############################################################################
# - Try to find the libnet library
# Once done this will define
#
# LIBNET_FOUND - system has the libnet library
# LIBNET_CONFIG
# LIBNET_LIBRARIES - The libraries needed to use libnet
#
# Based on FindESMTP.cmake
# Distributed under the BSD license.
if (LIBNET_LIBRARIES)
# Already in cache, be silent
set(LIBNET_FIND_QUIETLY TRUE)
endif (LIBNET_LIBRARIES)
FIND_PROGRAM(LIBNET_CONFIG libnet-config)
add_library(libnet INTERFACE)
IF (LIBNET_CONFIG)
EXEC_PROGRAM(${LIBNET_CONFIG} ARGS --libs OUTPUT_VARIABLE _LIBNET_LIBRARIES)
EXEC_PROGRAM(${LIBNET_CONFIG} ARGS --cflags OUTPUT_VARIABLE _LIBNET_CFLAGS)
string(REGEX REPLACE "[\r\n]" " " _LIBNET_LIBRARIES "${_LIBNET_LIBRARIES}")
string(REGEX REPLACE "[\r\n]" " " _LIBNET_CFLAGS "${_LIBNET_CFLAGS}")
set (LIBNET_LIBRARIES ${_LIBNET_LIBRARIES} CACHE STRING "The libraries needed for LIBNET")
set (LIBNET_CFLAGS ${_LIBNET_CFLAGS} CACHE STRING "The compiler switches needed for LIBNET")
set (LIBNET_FOUND TRUE CACHE BOOL "LibNet is found")
# this is due to libnet-config provides old fashined defines, which triggers warning on newer systems
# for details see: https://github.com/libnet/libnet/pull/71
set (LIBNET_CFLAGS "${LIBNET_CFLAGS} -D_DEFAULT_SOURCE")
target_include_directories(libnet INTERFACE ${LIBNET_CFLAGS})
target_link_libraries(libnet INTERFACE ${LIBNET_LIBRARIES})
ELSE(LIBNET_CONFIG)
set (LIBNET_FOUND FALSE CACHE BOOL "LibNet is found")
ENDIF()
include(FindPackageHandleStandardArgs)
FIND_PACKAGE_HANDLE_STANDARD_ARGS(LIBNET DEFAULT_MSG LIBNET_LIBRARIES LIBNET_CFLAGS LIBNET_FOUND)
MARK_AS_ADVANCED(LIBNET_LIBRARIES LIBNET_CFLAGS)
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