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#
# Try to find libpcap.
#
find_program(PCAP_CONFIG pcap-config)
if(PCAP_CONFIG)
# We have pcap-config; use it.
# First, get the include directory.
execute_process(COMMAND "${PCAP_CONFIG}" "--cflags"
RESULT_VARIABLE PCAP_CONFIG_RESULT
OUTPUT_VARIABLE PCAP_CONFIG_OUTPUT
OUTPUT_STRIP_TRAILING_WHITESPACE
)
if(NOT PCAP_CONFIG_RESULT EQUAL 0)
message(FATAL_ERROR "pcap-config --cflags failed")
endif()
#
# XXX - this assumes that there's only one -I flag in the output
# of pcap-config --cflags. That *should* be the case.
#
string(REGEX REPLACE "-I" "" PCAP_INCLUDE_DIRS ${PCAP_CONFIG_OUTPUT})
set(PCAP_INCLUDE_DIR ${PCAP_INCLUDE_DIRS})
# Now, get the libraries.
execute_process(COMMAND "${PCAP_CONFIG}" "--libs"
RESULT_VARIABLE PCAP_CONFIG_RESULT
OUTPUT_VARIABLE PCAP_CONFIG_OUTPUT
OUTPUT_STRIP_TRAILING_WHITESPACE
)
if(NOT PCAP_CONFIG_RESULT EQUAL 0)
message(FATAL_ERROR "pcap-config --libs failed")
endif()
separate_arguments(LIBS_LIST UNIX_COMMAND ${PCAP_CONFIG_OUTPUT})
set(_pcap_library_dirs)
set(PCAP_LIBRARIES)
foreach(_arg IN LISTS LIBS_LIST)
if(_arg MATCHES "^-L")
# Add this directory to _pcap_library_dirs
string(REGEX REPLACE "-L" "" _dir ${_arg})
list(APPEND _pcap_library_dirs ${_dir})
elseif(_arg MATCHES "^-l")
string(REGEX REPLACE "-l" "" _lib ${_arg})
#
# Try to find that library, so we get its full path.
# CMake *really* doesn't like the notion of specifying "here are
# the directories in which to look for libraries" except in
# find_library() calls; it *really* prefers using full paths to
# library files, rather than library names.
#
find_library(_libfullpath ${_lib} HINTS ${__pcap_library_dirs})
list(APPEND PCAP_LIBRARIES ${_libfullpath})
endif()
endforeach()
# Now, get the library directories and libraries for static linking.
execute_process(COMMAND "${PCAP_CONFIG}" "--libs" "--static"
RESULT_VARIABLE PCAP_CONFIG_RESULT
OUTPUT_VARIABLE PCAP_CONFIG_OUTPUT
)
if(NOT PCAP_CONFIG_RESULT EQUAL 0)
message(FATAL_ERROR "pcap-config --libs --static failed")
endif()
separate_arguments(LIBS_LIST UNIX_COMMAND ${PCAP_CONFIG_OUTPUT})
set(_pcap_static_library_dirs)
set(PCAP_STATIC_LIBRARIES)
foreach(_arg IN LISTS LIBS_LIST)
if(_arg MATCHES "^-L")
# Add this directory to _pcap_static_library_dirs
string(REGEX REPLACE "-L" "" _dir ${_arg})
list(APPEND _pcap_static_library_dirs ${_dir})
elseif(_arg MATCHES "^-l")
string(REGEX REPLACE "-l" "" _lib ${_arg})
#
# Try to find that library, so we get its full path, as
# we do with dynamic libraries.
#
find_library(_libfullpath ${_lib} HINTS ${__pcap_static_library_dirs})
list(APPEND PCAP_STATIC_LIBRARIES ${_libfullpath})
endif()
endforeach()
# Try to find the header
find_path(PCAP_INCLUDE_DIR pcap.h HINTS ${PCAP_INCLUDE_DIRS})
# Try to find the library
find_library(PCAP_LIBRARY pcap HINTS ${_pcap_library_dirs})
# Try to find the static library (XXX - what about AIX?)
include(CMakePushCheckState)
cmake_push_check_state()
set(CMAKE_FIND_LIBRARY_SUFFIXES ".a")
find_library(PCAP_STATIC_LIBRARY pcap HINTS ${_pcap_static_library_dirs})
cmake_pop_check_state()
else(PCAP_CONFIG)
# Try to find the header
find_path(PCAP_INCLUDE_DIR pcap.h)
# Try to find the library
find_library(PCAP_LIBRARY pcap)
# Try to find the static library (XXX - what about AIX?)
include(CMakePushCheckState)
cmake_push_check_state()
set(CMAKE_FIND_LIBRARY_SUFFIXES ".a")
find_library(PCAP_STATIC_LIBRARY pcap)
cmake_pop_check_state()
set(PCAP_INCLUDE_DIRS ${PCAP_INCLUDE_DIR})
set(PCAP_LIBRARIES ${PCAP_LIBRARY})
set(PCAP_STATIC_LIBRARIES ${PCAP_STATIC_LIBRARY})
endif(PCAP_CONFIG)
include(FindPackageHandleStandardArgs)
find_package_handle_standard_args(PCAP
DEFAULT_MSG
PCAP_INCLUDE_DIR
PCAP_LIBRARY
)
mark_as_advanced(
PCAP_INCLUDE_DIR
PCAP_LIBRARY
PCAP_STATIC_LIBRARY
)
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