# Try to find libpcap.
#
-find_program(PCAP_CONFIG pcap-config)
-if(PCAP_CONFIG)
+#
+# First, try pkg-config.
+#
+find_package(PkgConfig)
+pkg_search_module(PCAP libpcap)
+
+if(PCAP_FOUND)
+ #
+ # That worked.
+ # Now, for each library, try to find it, 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.
#
- # We have pcap-config; use it.
- # XXX - what if this is on Windows? If you're using, for example,
- # MinGW, that might be the right thing to do, *if* pcap-config
- # were made to work properly on Windows, but what about MSVC?
+ set(_pcap_libraries "${PCAP_LIBRARIES}")
+ set(PCAP_LIBRARIES "")
+ foreach(_lib IN LISTS _pcap_libraries)
+ #
+ # Try to find that library.
+ #
+ find_library(_libfullpath ${_lib} HINTS ${PCAP_LIBRARY_DIRS})
+ list(APPEND PCAP_LIBRARIES ${_libfullpath})
+ #
+ # Remove that from the cache; we're using it as a local variable,
+ # but find_library insists on making it a cache variable.
+ #
+ unset(_libfullpath CACHE)
+ endforeach()
+
#
- # First, get the include directory.
+ # Now find the static libraries.
+ # (XXX - what about AIX?)
#
- execute_process(COMMAND "${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()
+ set(_pcap_static_libraries "${PCAP_STATIC_LIBRARIES}")
+ set(PCAP_STATIC_LIBRARIES "")
+ set(SAVED_CMAKE_FIND_LIBRARY_SUFFIXES "${CMAKE_FIND_LIBRARY_SUFFIXES}")
+ set(CMAKE_FIND_LIBRARY_SUFFIXES ".a")
+ foreach(_lib IN LISTS _pcap_static_libraries)
+ #
+ # Try to find that library, so we get its full path, as
+ # we do with dynamic libraries.
+ #
+ find_library(_libfullpath ${_lib} HINTS ${PCAP_LIBRARY_DIRS})
+ list(APPEND PCAP_STATIC_LIBRARIES ${_libfullpath})
+ #
+ # Remove that from the cache; we're using it as a local variable,
+ # but find_library insists on making it a cache variable.
+ #
+ unset(_libfullpath CACHE)
+ endforeach()
+ set(CMAKE_FIND_LIBRARY_SUFFIXES "${SAVED_CMAKE_FIND_LIBRARY_SUFFIXES}")
+else(PCAP_FOUND)
#
- # XXX - this assumes that there's only one -I flag in the output
- # of pcap-config --cflags. That *should* be the case.
+ # That didn't work. Try pcap-config.
#
- string(REGEX REPLACE "-I" "" _pcap_include_dir "${PCAP_CONFIG_OUTPUT}")
+ find_program(PCAP_CONFIG pcap-config)
+ if(PCAP_CONFIG)
+ #
+ # We have pcap-config; use it.
+ # XXX - what if this is on Windows? If you're using, for example,
+ # MinGW, that might be the right thing to do, *if* pcap-config
+ # were made to work properly on Windows, but what about MSVC?
+ #
+ # First, get the include directory.
+ #
+ execute_process(COMMAND "${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_dir "${PCAP_CONFIG_OUTPUT}")
- # Try to find the header
- # We use what pcap-config provided as a hint, because the
- # pcap-config that ships with macOS bogusly supplies
- # -I/usr/local/include even though the header isn't
- # there (it may be under /usr/include or it may be
- # buried in the Xcode app bundle).
- find_path(PCAP_INCLUDE_DIRS pcap.h HINTS ${_pcap_include_dir})
+ # Try to find the header
+ # We use what pcap-config provided as a hint, because the
+ # pcap-config that ships with macOS bogusly supplies
+ # -I/usr/local/include even though the header isn't
+ # there (it may be under /usr/include or it may be
+ # buried in the Xcode app bundle).
+ find_path(PCAP_INCLUDE_DIRS pcap.h HINTS ${_pcap_include_dir})
- # Now, get the libraries.
- execute_process(COMMAND "${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.
- #
- # Furthermore, the pcap-config shipped with macOS reports
- # -I/usr/local/include for --cflags and -L/usr/local/lib for
- # --libs, rather than reporting the appropriate system (or
- # Xcode application) directory.
- #
- find_library(_libfullpath ${_lib} HINTS ${__pcap_library_dirs})
- list(APPEND PCAP_LIBRARIES ${_libfullpath})
+ # Now, get the libraries.
+ execute_process(COMMAND "${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()
- endforeach()
+ 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. See the
+ # comment above for why we do this.
+ #
+ # Furthermore, the pcap-config shipped with macOS reports
+ # -I/usr/local/include for --cflags and -L/usr/local/lib for
+ # --libs, rather than reporting the appropriate system (or
+ # Xcode application) directory.
+ #
+ find_library(_libfullpath ${_lib} HINTS ${__pcap_library_dirs})
+ list(APPEND PCAP_LIBRARIES ${_libfullpath})
+ #
+ # Remove that from the cache; we're using it as a local variable,
+ # but find_library insists on making it a cache variable.
+ #
+ unset(_libfullpath CACHE)
+ endif()
+ endforeach()
- # Now, get the library directories and libraries for static linking.
- execute_process(COMMAND "${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 ${_libfullpath})
+ # Now, get the library directories and libraries for static linking.
+ # (XXX - what about AIX?)
+ execute_process(COMMAND "${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()
- endforeach()
-else(PCAP_CONFIG)
- #
- # We don't have pcap-config.
- # Try to find the header by just looking for it in whatever
- # directories find_path() uses by default.
- #
- find_path(PCAP_INCLUDE_DIRS pcap.h)
+ separate_arguments(LIBS_LIST UNIX_COMMAND ${PCAP_CONFIG_OUTPUT})
+ set(_pcap_static_library_dirs "")
+ set(PCAP_STATIC_LIBRARIES "")
+ set(SAVED_CMAKE_FIND_LIBRARY_SUFFIXES "${CMAKE_FIND_LIBRARY_SUFFIXES}")
+ set(CMAKE_FIND_LIBRARY_SUFFIXES ".a")
+ 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 ${_libfullpath})
+ #
+ # Remove that from the cache; we're using it as a local variable,
+ # but find_library insists on making it a cache variable.
+ #
+ unset(_libfullpath CACHE)
+ endif()
+ endforeach()
+ set(CMAKE_FIND_LIBRARY_SUFFIXES "${SAVED_CMAKE_FIND_LIBRARY_SUFFIXES}")
+ else(PCAP_CONFIG)
+ #
+ # We don't have pcap-config.
+ # Try to find the header by just looking for it in whatever
+ # directories find_path() uses by default.
+ #
+ find_path(PCAP_INCLUDE_DIRS pcap.h)
- # Try to find the library
- if(WIN32)
- # The 64-bit Packet.lib is located under /x64
- if(CMAKE_SIZEOF_VOID_P EQUAL 8)
- #
- # For the WinPcap and Npcap SDKs, the Lib subdirectory of the top-level
- # directory contains 32-bit libraries; the 64-bit libraries are in the
- # Lib/x64 directory.
- #
- # The only way to *FORCE* CMake to look in the Lib/x64 directory
- # without searching in the Lib directory first appears to be to set
- # CMAKE_LIBRARY_ARCHITECTURE to "x64".
- #
- set(CMAKE_LIBRARY_ARCHITECTURE "x64")
+ # Try to find the library
+ if(WIN32)
+ # The 64-bit Packet.lib is located under /x64
+ if(CMAKE_SIZEOF_VOID_P EQUAL 8)
+ #
+ # For the WinPcap and Npcap SDKs, the Lib subdirectory of the top-level
+ # directory contains 32-bit libraries; the 64-bit libraries are in the
+ # Lib/x64 directory.
+ #
+ # The only way to *FORCE* CMake to look in the Lib/x64 directory
+ # without searching in the Lib directory first appears to be to set
+ # CMAKE_LIBRARY_ARCHITECTURE to "x64".
+ #
+ set(CMAKE_LIBRARY_ARCHITECTURE "x64")
+ endif()
endif()
- endif()
- find_library(PCAP_LIBRARIES pcap)
- if(WIN32)
- if(NOT PCAP_LIBRARIES)
- #
- # OK, look for it under the name wpcap.
- #
- find_library(PCAP_LIBRARIES wpcap)
- endif(NOT PCAP_LIBRARIES)
- endif(WIN32)
- if(NOT WIN32)
- # 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_LIBRARIES pcap)
- cmake_pop_check_state()
- endif(NOT WIN32)
-endif(PCAP_CONFIG)
+ find_library(PCAP_LIBRARIES pcap)
+ if(WIN32)
+ if(NOT PCAP_LIBRARIES)
+ #
+ # OK, look for it under the name wpcap.
+ #
+ find_library(PCAP_LIBRARIES wpcap)
+ endif(NOT PCAP_LIBRARIES)
+ endif(WIN32)
+
+ if(NOT WIN32)
+ # Try to find the static library (XXX - what about AIX?)
+ set(SAVED_CMAKE_FIND_LIBRARY_SUFFIXES "${CMAKE_FIND_LIBRARY_SUFFIXES}")
+ set(CMAKE_FIND_LIBRARY_SUFFIXES ".a")
+ find_library(PCAP_STATIC_LIBRARIES pcap)
+ set(CMAKE_FIND_LIBRARY_SUFFIXES "${SAVED_CMAKE_FIND_LIBRARY_SUFFIXES}")
+ endif(NOT WIN32)
+ endif(PCAP_CONFIG)
+endif(PCAP_FOUND)
include(FindPackageHandleStandardArgs)
find_package_handle_standard_args(PCAP
projects / tcpdump / blobdiff