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112 lines
3.8 KiB
CMake
112 lines
3.8 KiB
CMake
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# Copyright 2013 Ettercap Development Team.
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#
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# Distributed under GPL license.
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#
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# Look for the header file
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find_path(LIBNET_INCLUDE_DIR
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NAMES libnet.h
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PATH_SUFFIXES libnet11 libnet-1.1)
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mark_as_advanced(LIBNET_INCLUDE_DIR)
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#Look for the library
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find_library(LIBNET_LIBRARY
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NAMES net libnet
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PATH_SUFFIXES libnet11 libnet-1.1)
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mark_as_advanced(LIBNET_LIBRARY)
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# Make sure we've got an include dir.
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if(NOT LIBNET_INCLUDE_DIR)
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if(LIBNET_FIND_REQUIRED AND NOT LIBNET_FIND_QUIETLY)
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message(FATAL_ERROR "Could not find LIBNET include directory.")
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endif()
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return()
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endif()
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if(NOT LIBNET_LIBRARY)
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if(LIBNET_FIND_REQUIRED AND NOT LIBNET_FIND_QUIETLY)
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message(FATAL_ERROR "Could not find LIBNET library.")
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endif()
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return()
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endif()
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#=============================================================
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# _LIBNET_GET_VERSION
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# Internal function to parse the version number in libnet.h
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# _OUT_version = The full version number
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# _OUT_version_major = The major version number only
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# _OUT_version_minor = The minor version number only
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# _libnet_hdr = Header file to parse
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#=============================================================
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function(_LIBNET_GET_VERSION _OUT_version _OUT_version_major _OUT_version_minor _libnet_hdr)
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file(READ ${_libnet_hdr} _contents)
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if(_contents)
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string(REGEX REPLACE ".*#define LIBNET_VERSION[ \t]+\"([0-9.a-zA-Z-]+)\".*" "\\1" ${_OUT_version} "${_contents}")
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if(NOT ${_OUT_version} MATCHES "[0-9.a-zA-Z-]+")
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message(FATAL_ERROR "Version parsing failed for LIBNET_VERSION!")
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endif()
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set(${_OUT_version} ${${_OUT_version}} PARENT_SCOPE)
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string(REGEX REPLACE "^([0-9]+)\\.[0-9]+.*" "\\1" ${_OUT_version_major} "${${_OUT_version}}")
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string(REGEX REPLACE "^[0-9]+\\.([0-9]+).*" "\\1" ${_OUT_version_minor} "${${_OUT_version}}")
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if(NOT ${_OUT_version_major} MATCHES "[0-9]+" OR NOT ${_OUT_version_minor} MATCHES "[0-9]+")
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message(FATAL_ERROR "Version parsing failed for detailed LIBNET_VERSION!:
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'${_OUT_version}' '${_OUT_version_major}' '${_OUT_version_minor}'")
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endif()
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set(${_OUT_version_major} ${${_OUT_version_major}} PARENT_SCOPE)
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set(${_OUT_version_minor} ${${_OUT_version_minor}} PARENT_SCOPE)
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else()
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message(FATAL_ERROR "Include file ${_libnet_hdr} does not exist")
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endif()
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endfunction()
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if(LIBNET_FIND_VERSION)
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set(LIBNET_FAILED_VERSION_CHECK true)
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_libnet_get_version(LIBNET_VERSION LIBNET_VERSION_MAJOR LIBNET_VERSION_MINOR ${LIBNET_INCLUDE_DIR}/libnet.h)
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if(LIBNET_FIND_VERSION_EXACT)
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if(LIBNET_VERSION VERSION_EQUAL LIBNET_FIND_VERSION)
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set(LIBNET_FAILED_VERSION_CHECK false)
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endif()
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else()
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if(LIBNET_VERSION VERSION_EQUAL LIBNET_FIND_VERSION OR
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LIBNET_VERSION VERSION_GREATER LIBNET_FIND_VERSION)
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set(LIBNET_FAILED_VERSION_CHECK false)
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endif()
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endif()
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if(LIBNET_FAILED_VERSION_CHECK)
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if(LIBNET_FIND_REQUIRED AND NOT LIBNET_FIND_QUIETLY)
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if(LIBNET_FIND_VERSION_EXACT)
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message(FATAL_ERROR "LIBNET version check failed.
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Version ${LIBNET_VERSION} was found, version ${LIBNET_FIND_VERSION} is needed exactly.")
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else()
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message(FATAL_ERROR "LIBNET version check failed.
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Version ${LIBNET_VERSION} was found, at least version ${LIBNET_FIND_VERSION} is required")
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endif()
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endif()
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# If the version check fails, exit out of the module here
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return()
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endif()
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endif()
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#handle the QUIETLY and REQUIRED arguments and set LIBNET_FOUND to TRUE if
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# all listed variables are TRUE
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include(FindPackageHandleStandardArgs)
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find_package_handle_standard_args(LIBNET DEFAULT_MSG LIBNET_LIBRARY LIBNET_INCLUDE_DIR)
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if(LIBNET_FOUND)
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set(LIBNET_LIBRARY ${LIBNET_LIBRARY})
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set(LIBNET_INCLUDE_DIR ${LIBNET_INCLUDE_DIR})
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set(LIBNET_VERSION ${LIBNET_VERSION})
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set(LIBNET_VERSION_MAJOR ${LIBNET_VERSION_MAJOR})
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set(LIBNET_VERSION_MINOR ${LIBNET_VERSION_MINOR})
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endif()
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