+else(WIN32)
+ #
+ # Building for UN*X.
+ #
+ # See whether we were handed a QUIET argument, so we can pass it on
+ # to pkg_search_module. Do *NOT* pass on the REQUIRED argument,
+ # because, if pkg-config isn't found, or it is but it has no .pc
+ # files for libpcap, that is *not* necessarily an indication that
+ # libpcap isn't available - not all systems ship pkg-config, and
+ # libpcap didn't have .pc files until libpcap 1.9.0.
+ #
+ if(PCAP_FIND_QUIETLY)
+ set(_quiet "QUIET")
+ endif()
+
+ #
+ # First, try pkg-config.
+ #
+ find_package(PkgConfig)
+ pkg_search_module(CONFIG_PCAP ${_quiet} libpcap)
+
+ if(NOT CONFIG_PCAP_FOUND)
+ #
+ # That didn't work. Try pcap-config.
+ #
+ find_program(PCAP_CONFIG pcap-config)
+ if(PCAP_CONFIG)
+ #
+ # We have pcap-config; use it.
+ #
+ if(NOT "${_quiet}" STREQUAL "QUIET")
+ message(STATUS "Found pcap-config")
+ endif()
+
+ #
+ # if this is macOS or some other Darwin-based OS, check whether
+ # it's the system-supplied one.
+ #
+ if(APPLE AND "${PCAP_CONFIG}" STREQUAL /usr/bin/pcap-config)
+ #
+ # It is - remember that, so that if it provides -I/usr/local/include
+ # with --cflags, or -L/usr/local/lib with --libs, we ignore it;
+ # the macOS pcap-config does that even though the headers aren't
+ # under /usr/local/include and the library isn't in /usr/local/lib.
+ #
+ set(_broken_apple_pcap_config TRUE)
+ endif()
+
+ #
+ # Now get the include directories.
+ #
+ execute_process(COMMAND "${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()
+ separate_arguments(CFLAGS_LIST UNIX_COMMAND ${PCAP_CONFIG_OUTPUT})
+ set(CONFIG_PCAP_INCLUDE_DIRS "")
+ foreach(_arg IN LISTS CFLAGS_LIST)
+ if(_arg MATCHES "^-I")
+ #
+ # Extract the directory by removing the -I.
+ #
+ string(REGEX REPLACE "-I" "" _dir ${_arg})
+ #
+ # Work around macOS (and probably other Darwin) brokenness,
+ # by not adding /usr/local/include if it's from the broken
+ # Apple pcap-config.
+ #
+ if(NOT _broken_apple_pcap_config OR
+ NOT "${_dir}" STREQUAL /usr/local/include)
+ # Add it to CONFIG_PCAP_INCLUDE_DIRS
+ list(APPEND CONFIG_PCAP_INCLUDE_DIRS ${_dir})
+ endif()
+ endif()
+ endforeach()
+
+ #
+ # Now, get the library directories and libraries for dynamic linking.
+ #
+ execute_process(COMMAND "${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(CONFIG_PCAP_LIBRARY_DIRS "")
+ set(CONFIG_PCAP_LIBRARIES "")
+ foreach(_arg IN LISTS LIBS_LIST)
+ if(_arg MATCHES "^-L")
+ #
+ # Extract the directory by removing the -L.
+ #
+ string(REGEX REPLACE "-L" "" _dir ${_arg})
+ #
+ # Work around macOS (and probably other Darwin) brokenness,
+ # by not adding /usr/local/lib if it's from the broken
+ # Apple pcap-config.
+ #
+ if(NOT _broken_apple_pcap_config OR
+ NOT "${_dir}" STREQUAL /usr/local/lib)
+ # Add this directory to CONFIG_PCAP_LIBRARY_DIRS
+ list(APPEND CONFIG_PCAP_LIBRARY_DIRS ${_dir})
+ endif()
+ elseif(_arg MATCHES "^-l")
+ string(REGEX REPLACE "-l" "" _lib ${_arg})
+ list(APPEND CONFIG_PCAP_LIBRARIES ${_lib})
+ endif()
+ endforeach()
+
+ #
+ # Now, get the library directories and libraries for static linking.
+ #
+ execute_process(COMMAND "${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(CONFIG_PCAP_STATIC_LIBRARY_DIRS "")
+ set(CONFIG_PCAP_STATIC_LIBRARIES "")
+ foreach(_arg IN LISTS LIBS_LIST)
+ if(_arg MATCHES "^-L")
+ #
+ # Extract the directory by removing the -L.
+ #
+ string(REGEX REPLACE "-L" "" _dir ${_arg})
+ #
+ # Work around macOS (and probably other Darwin) brokenness,
+ # by not adding /usr/local/lib if it's from the broken
+ # Apple pcap-config.
+ #
+ if(NOT _broken_apple_pcap_config OR
+ NOT "${_dir}" STREQUAL /usr/local/lib)
+ # Add this directory to CONFIG_PCAP_STATIC_LIBRARY_DIRS
+ list(APPEND CONFIG_PCAP_STATIC_LIBRARY_DIRS ${_dir})
+ endif()
+ 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.
+ #
+ list(APPEND CONFIG_PCAP_STATIC_LIBRARIES ${_lib})
+ endif()
+ endforeach()
+
+ #
+ # We've set CONFIG_PCAP_INCLUDE_DIRS, CONFIG_PCAP_LIBRARIES, and
+ # CONFIG_PCAP_STATIC_LIBRARIES above; set CONFIG_PCAP_FOUND.
+ #
+ set(CONFIG_PCAP_FOUND YES)
projects / tcpdump / blobdiff