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225 lines
7.2 KiB
CMake
225 lines
7.2 KiB
CMake
# - Try to find the Kerberos libraries
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# Once done this will define
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#
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# KRB5_ROOT_CONFIG - Set this variable to the full path of krb5-config of Kerberos
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# KRB5_ROOT_FLAVOUR - Set this variable to the flavour of Kerberos installation (MIT or Heimdal)
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#
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# Read-Only variables:
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# KRB5_FOUND - system has the Heimdal library
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# KRB5_FLAVOUR - "MIT" or "Heimdal" if anything found.
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# KRB5_INCLUDE_DIRS - the Heimdal include directory
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# KRB5_LIBRARIES - The libraries needed to use Kerberos
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# KRB5_LIBRARY_DIRS - Directories to add to linker search path
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# KRB5_LDFLAGS - Additional linker flags
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# KRB5_CFLAGS - Additional compiler flags
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# KRB5_VERSION - This is set to version advertised by pkg-config or read from manifest.
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# In case the library is found but no version info available it'll be set to "unknown"
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include(CheckIncludeFile)
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include(CheckIncludeFiles)
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include(CheckTypeSize)
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set(_KRB5_REQUIRED_VARS
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KRB5_FOUND
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KRB5_VERSION
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KRB5_FLAVOUR
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KRB5_INCLUDE_DIRS
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KRB5_LIBRARIES)
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macro(PROVIDES_KRB5)
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set(PREFIX "MACRO_KRB5")
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cmake_parse_arguments(
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"${PREFIX}"
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""
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"NAME"
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""
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${ARGN})
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set(KRB5_FLAVOUR ${MACRO_KRB5_NAME})
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string(TOUPPER "${MACRO_KRB5_NAME}" MACRO_KRB5_NAME)
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# This is a list of all variables that pkg_check_modules exports.
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set(VARIABLES "CFLAGS;CFLAGS_I;CFLAGS_OTHER;FOUND;INCLUDEDIR;INCLUDE_DIRS;LDFLAGS;LDFLAGS_OTHER;LIBDIR;LIBRARIES;LIBRARY_DIRS;LIBS;LIBS_L;LIBS_OTHER;LIBS_PATHS;LINK_LIBRARIS;MODULE_NAME;PREFIX;VERSION;STATIC_CFLAGS;STATIC_CFLAGS_I;STATIC_CFLAGS_OTHER;STATIC_INCLUDE_DIRS;STATIC_LDFLAGS;STATIC_LDFLAGS_OTHER;STATIC_LIBDIR;STATIC_LIBRARIES;STATIC_LIBRARY_DIRS;STATIC_LIBS;STATIC_LIBS_L;STATIC_LIBS_OTHER;STATIC_LIBS_PATHS")
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foreach(VAR ${VARIABLES})
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set(KRB5_${VAR} ${KRB5_${MACRO_KRB5_NAME}_${VAR}})
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endforeach()
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# Bugfix for older installations:
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# KRB5_INCLUDE_DIRS might not be set, fall back to KRB5_INCLUDEDIR
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if (NOT KRB5_INCLUDE_DIRS)
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set(KRB5_INCLUDE_DIRS ${KRB5_INCLUDEDIR})
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endif()
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endmacro()
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function(GET_KRB5_CONFIG KRB5_CONFIG COMMAND RESULT)
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execute_process(
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COMMAND ${KRB5_CONFIG} ${COMMAND}
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OUTPUT_VARIABLE _KRB5_RESULT
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RESULT_VARIABLE _KRB5_CONFIGURE_FAILED
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)
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if (_KRB5_CONFIGURE_FAILED)
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message(FATAL_ERROR "Failed to detect krb5-config [${COMMAND}]")
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endif()
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string(REGEX REPLACE "[\r\n]" "" _KRB5_RESULT ${_KRB5_RESULT})
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set(${RESULT} "${_KRB5_RESULT}" PARENT_SCOPE)
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endfunction()
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function(string_starts_with str search RES)
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string(FIND "${str}" "${search}" out)
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if("${out}" EQUAL 0)
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set(${RES} ON PARENT_SCOPE)
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else()
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set(${RES} OFF PARENT_SCOPE)
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endif()
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endfunction()
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function(GET_KRB5_BY_CONFIG KRB5_CONFIG)
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if (NOT KRB5_CONFIG)
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find_program(KRB5_CONFIG
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NAMES
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"krb5-config"
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"krb5-config.mit"
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"krb5-config.heimdal"
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PATH_SUFFIXES
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bin
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NO_CMAKE_PATH
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NO_CMAKE_ENVIRONMENT_PATH
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REQUIRED
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)
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message("autodetected krb5-config at ${KRB5_CONFIG}")
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if (NOT KRB5_CONFIG)
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return()
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endif()
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else()
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message("using krb5-config ${KRB5_CONFIG} provided by KRB5_ROOT_CONFIG")
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endif()
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GET_KRB5_CONFIG("${KRB5_CONFIG}" "--vendor" _KRB5_VENDOR)
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if ("${_KRB5_VENDOR}" STREQUAL "Apple MITKerberosShim")
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message(FATAL_ERROR "Apple MITKerberosShim is deprecated and not supported")
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elseif ("${_KRB5_VENDOR}" STREQUAL "Massachusetts Institute of Technology")
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set(KRB5_FLAVOUR "MIT")
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else()
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set(KRB5_FLAVOUR "${_KRB5_VENDOR}")
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endif()
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GET_KRB5_CONFIG("${KRB5_CONFIG}" "--cflags" KRB5_CFLAGS)
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GET_KRB5_CONFIG("${KRB5_CONFIG}" "--version" KRB5_VERSION_RAW)
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string(REGEX REPLACE "[ ]" ";" KRB5_VERSION_LIST "${KRB5_VERSION_RAW}")
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list(LENGTH KRB5_VERSION_LIST KRB5_VERSION_LIST_LEN)
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math(EXPR KRB5_VERSION_LIST_LAST "${KRB5_VERSION_LIST_LEN} - 1")
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list(GET KRB5_VERSION_LIST ${KRB5_VERSION_LIST_LAST} KRB5_VERSION)
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if (KRB5_FLAVOUR STREQUAL "MIT")
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if (KRB5_VERSION VERSION_LESS "1.14")
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message(FATAL_ERROR "MIT kerberos ${KRB5_VERSION} < 1.14 is not supported, upgrade the library!")
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endif()
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endif()
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GET_KRB5_CONFIG("${KRB5_CONFIG}" "--libs" KRB5_LDFLAGS)
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string(REGEX REPLACE "[ ]" ";" KRB5_CFLAG_LIST "${KRB5_CFLAGS}")
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foreach(FLAG ${KRB5_CFLAG_LIST})
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string_starts_with("${FLAG}" "-I" RES)
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if (RES)
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string(SUBSTRING "${FLAG}" 2 -1 FLAG)
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endif()
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if (IS_DIRECTORY "${FLAG}")
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list(APPEND KRB5_INCLUDEDIR ${FLAG})
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endif()
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endforeach()
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if (NOT KRB5_INCLUDEDIR)
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find_file(KRB5_INCLUDEDIR_HEADER
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NAMES krb5.h
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REQUIRED
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)
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get_filename_component(KRB5_INCLUDEDIR "${KRB5_INCLUDEDIR_HEADER}" DIRECTORY)
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endif()
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string(REGEX REPLACE "[ ]" ";" KRB5_LDFLAG_LIST "${KRB5_LDFLAGS}")
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foreach(FLAG ${KRB5_LDFLAG_LIST})
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string_starts_with("${FLAG}" "-L" RES)
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if (RES)
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string(SUBSTRING "${FLAG}" 2 -1 SUBFLAG)
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list(APPEND KRB5_LIBRARY_DIRS ${SUBFLAG})
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endif()
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string_starts_with("${FLAG}" "-l" RES)
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if (RES)
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string(SUBSTRING "${FLAG}" 2 -1 SUBFLAG)
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list(APPEND KRB5_LIBRARIES ${SUBFLAG})
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endif()
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endforeach()
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set(KRB5_FOUND ON PARENT_SCOPE)
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set(KRB5_VERSION ${KRB5_VERSION} PARENT_SCOPE)
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set(KRB5_FLAVOUR ${KRB5_FLAVOUR} PARENT_SCOPE)
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set(KRB5_CFLAGS ${KRB5_CFLAGS} PARENT_SCOPE)
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set(KRB5_LDFLAGS ${KRB5_LDFLAGS} PARENT_SCOPE)
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set(KRB5_INCLUDEDIR ${KRB5_INCLUDEDIR} PARENT_SCOPE)
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set(KRB5_INCLUDE_DIRS ${KRB5_INCLUDEDIR} PARENT_SCOPE)
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set(KRB5_LIBRARIES ${KRB5_LIBRARIES} PARENT_SCOPE)
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set(KRB5_LIBRARY_DIRS ${KRB5_LIBRARY_DIRS} PARENT_SCOPE)
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endfunction()
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# try to find kerberos to compile against.
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#
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# * First search with pkg-config (prefer MIT over Heimdal)
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# * Then try to find krb5-config (generic, krb5-config.mit and last krb5-config.heimdal)
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find_package(PkgConfig REQUIRED)
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if (KRB5_ROOT_CONFIG)
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elseif (KRB5_ROOT_FLAVOUR)
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if (KRB5_ROOT_FLAVOUR STREQUAL "Heimdal")
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pkg_check_modules(KRB5_HEIMDAL heimdal-krb5)
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elseif (KRB5_ROOT_FLAVOUR STREQUAL "MIT")
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pkg_check_modules(KRB5_HEIMDAL mit-krb5)
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else()
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message(FATAL_ERROR "Invalid KRB5_ROOT_FLAVOUR=${KRB5_ROOT_FLAVOUR}, only 'MIT' or 'Heimdal' are supported")
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endif()
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else()
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pkg_check_modules(KRB5_MIT mit-krb5)
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pkg_check_modules(KRB5_HEIMDAL heimdal-krb5)
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endif()
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if (KRB5_MIT_FOUND)
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PROVIDES_KRB5(NAME "MIT")
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if (KRB5_VERSION VERSION_LESS "1.14")
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message(FATAL_ERROR "MIT kerberos < 1.14 is not supported, upgrade the library!")
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endif()
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elseif(KRB5_HEIMDAL_FOUND)
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PROVIDES_KRB5(NAME "Heimdal")
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elseif(KRB5_ANY_FOUND)
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GET_KRB5_VENDOR(ANY_VENDOR)
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PROVIDES_KRB5(NAME "${ANY_VENDOR}")
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else()
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GET_KRB5_BY_CONFIG("${KRB5_ROOT_CONFIG}")
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endif()
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message("using KRB5_FOUND ${KRB5_FOUND} ")
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message("using KRB5_VERSION ${KRB5_VERSION} ")
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message("using KRB5_FLAVOUR ${KRB5_FLAVOUR} ")
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message("using KRB5_CFLAGS ${KRB5_CFLAGS} ")
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message("using KRB5_LDFLAGS ${KRB5_LDFLAGS} ")
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message("using KRB5_INCLUDEDIR ${KRB5_INCLUDEDIR} ")
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message("using KRB5_INCLUDE_DIRS ${KRB5_INCLUDE_DIRS} ")
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message("using KRB5_LIBRARIES ${KRB5_LIBRARIES} ")
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include(FindPackageHandleStandardArgs)
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find_package_handle_standard_args(KRB5
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REQUIRED_VARS
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${_KRB5_REQUIRED_VARS}
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VERSION_VAR
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KRB5_VERSION
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FAIL_MESSAGE
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"Could NOT find Kerberos, try to set the CMake variable KRB5_ROOT_CONFIG to the full path of krb5-config"
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)
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mark_as_advanced(${_KRB5_REQUIRED_VARS})
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