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gnss-sdr/cmake/Modules/FindPCAP.cmake
Carles Fernandez 7308745f05
Apply more concise file header format
Re-license CMake scripts with BSD-3-Clause
2020-12-30 13:35:06 +01:00

183 lines
5.2 KiB
CMake

# GNSS-SDR is a Global Navigation Satellite System software-defined receiver.
# This file is part of GNSS-SDR.
#
# SPDX-FileCopyrightText: 2006 Frederic Heem, <frederic.heem@telsey.it>
# SPDX-License-Identifier: BSD-3-Clause
# - Find pcap
# Find the PCAP includes and library
# http://www.tcpdump.org/
#
# The environment variable PCAPDIR allows to specify 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.
#
# Provides the following imported target:
# Pcap::pcap
#
if(NOT COMMAND feature_summary)
include(FeatureSummary)
endif()
if(NOT PKG_CONFIG_FOUND)
include(FindPkgConfig)
endif()
pkg_check_modules(PC_PCAP libpcap QUIET)
if(NOT PCAP_ROOT)
set(PCAP_ROOT_USER_PROVIDED /usr)
else()
set(PCAP_ROOT_USER_PROVIDED ${PCAP_ROOT})
endif()
if(DEFINED ENV{PCAP_ROOT})
set(PCAP_ROOT_USER_PROVIDED
${PCAP_ROOT_USER_PROVIDED}
$ENV{PCAP_ROOT}
)
endif()
if(DEFINED ENV{PCAPDIR})
set(PCAP_ROOT_USER_PROVIDED
${PCAP_ROOT_USER_PROVIDED}
$ENV{PCAPDIR})
endif()
if(DEFINED ENV{PCAPDIR})
find_path(PCAP_INCLUDE_DIR
NAMES
pcap/pcap.h
pcap.h
HINTS
${PC_PCAP_INCLUDEDIR}
PATHS
${PCAP_ROOT_USER_PROVIDED}
${PCAP_ROOT_USER_PROVIDED}/include
NO_DEFAULT_PATH
)
find_library(PCAP_LIBRARY
NAMES
pcap
HINTS
${PC_PCAP_LIBDIR}
PATHS
${PCAP_ROOT_USER_PROVIDED}
${PCAP_ROOT_USER_PROVIDED}/lib
NO_DEFAULT_PATH
)
else()
find_path(PCAP_INCLUDE_DIR
NAMES
pcap/pcap.h
pcap.h
HINTS
${PC_PCAP_INCLUDEDIR}
PATHS
${PCAP_ROOT_USER_PROVIDED}/include
/usr/include
/usr/local/include
/opt/local/include
)
find_library(PCAP_LIBRARY
NAMES
pcap
HINTS
${PC_PCAP_LIBDIR}
PATHS
${PCAP_ROOT_USER_PROVIDED}/lib
/usr/lib
/usr/lib64
/usr/lib/alpha-linux-gnu
/usr/lib/x86_64-linux-gnu
/usr/lib/aarch64-linux-gnu
/usr/lib/arm-linux-gnueabi
/usr/lib/arm-linux-gnueabihf
/usr/lib/hppa-linux-gnu
/usr/lib/i386-linux-gnu
/usr/lib/m68k-linux-gnu
/usr/lib/mips-linux-gnu
/usr/lib/mips64el-linux-gnuabi64
/usr/lib/mipsel-linux-gnu
/usr/lib/powerpc-linux-gnuspe
/usr/lib/powerpc64-linux-gnu
/usr/lib/powerpc64le-linux-gnu
/usr/lib/riscv64-linux-gnu
/usr/lib/s390x-linux-gnu
/usr/lib/sh4-linux-gnu
/usr/lib/sparc64-linux-gnu
/usr/lib/x86_64-linux-gnux32
/usr/lib/x86_64-kfreebsd-gnu
/usr/lib/i386-kfreebsd-gnu
/usr/local/lib
/usr/local/lib64
/opt/local/lib
)
endif()
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()
message(STATUS "Pcap include dirs cannot be found.")
endif()
if(PCAP_LIBRARIES)
message(STATUS "Pcap library set to ${PCAP_LIBRARIES}")
else()
message(STATUS "Pcap library cannot be found.")
endif()
#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)
include(FindPackageHandleStandardArgs)
find_package_handle_standard_args(PCAP DEFAULT_MSG PCAP_INCLUDE_DIRS PCAP_LIBRARIES)
if(PCAP_FOUND AND PC_PCAP_VERSION)
set(PCAP_VERSION ${PC_PCAP_VERSION})
endif()
set_package_properties(PCAP PROPERTIES
URL "https://www.tcpdump.org"
)
if(PCAP_FOUND AND PCAP_VERSION)
set_package_properties(PCAP PROPERTIES
DESCRIPTION "A portable C/C++ library for network traffic capture (found: v${PCAP_VERSION})"
)
else()
set_package_properties(PCAP PROPERTIES
DESCRIPTION "A portable C/C++ library for network traffic capture"
)
endif()
if(PCAP_FOUND AND NOT TARGET Pcap::pcap)
add_library(Pcap::pcap SHARED IMPORTED)
set_target_properties(Pcap::pcap PROPERTIES
IMPORTED_LINK_INTERFACE_LANGUAGES "CXX"
IMPORTED_LOCATION "${PCAP_LIBRARIES}"
INTERFACE_INCLUDE_DIRECTORIES "${PCAP_INCLUDE_DIRS}"
INTERFACE_LINK_LIBRARIES "${PCAP_LIBRARIES}"
)
endif()
mark_as_advanced(PCAP_LIBRARIES PCAP_INCLUDE_DIRS)