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#
# - Find kerberos
# Find the native KERBEROS includes and library
#
#  KERBEROS_INCLUDE_DIRS - where to find krb5.h, etc.
#  KERBEROS_LIBRARIES    - List of libraries when using krb5.
#  KERBEROS_FOUND        - True if krb5 found.
#  KERBEROS_DLL_DIR      - (Windows) Path to the Kerberos DLLs.
#  KERBEROS_DLLS         - (Windows) List of required Kerberos DLLs.


IF (KERBEROS_INCLUDE_DIRS)
  # Already in cache, be silent
  SET(KERBEROS_FIND_QUIETLY TRUE)
ENDIF (KERBEROS_INCLUDE_DIRS)

INCLUDE(FindWSWinLibs)
FindWSWinLibs("kfw-.*" "KERBEROS_HINTS")

find_package(PkgConfig)
pkg_search_module(KERBEROS krb5)

FIND_PATH(KERBEROS_INCLUDE_DIR krb5.h
  HINTS
    "${KERBEROS_INCLUDEDIR}"
    "${KERBEROS_HINTS}/include"
)

SET(KERBEROS_NAMES krb5 krb5_32 krb5_64)
FIND_LIBRARY(KERBEROS_LIBRARY NAMES ${KERBEROS_NAMES}
  HINTS
    "${KERBEROS_LIBDIR}"
    "${KERBEROS_HINTS}/lib"
)

# handle the QUIETLY and REQUIRED arguments and set KERBEROS_FOUND to TRUE if
# all listed variables are TRUE
INCLUDE(FindPackageHandleStandardArgs)
FIND_PACKAGE_HANDLE_STANDARD_ARGS(KERBEROS DEFAULT_MSG KERBEROS_LIBRARY KERBEROS_INCLUDE_DIR)

# todo
# add all kerberos libs
# autodetect HAVE_HEIMDAL_KERBEROS
# autodetect HAVE_MIT_KERBEROS (use pkg_search_module(mit-krb5)?)
# autodetect(?) HAVE_KEYTYPE_ARCFOUR_56

IF(KERBEROS_FOUND)
  SET( KERBEROS_LIBRARIES ${KERBEROS_LIBRARY} )
  SET( KERBEROS_INCLUDE_DIRS ${KERBEROS_INCLUDE_DIR} )
  if (WIN32)
    set ( KERBEROS_DLL_DIR "${KERBEROS_HINTS}/bin"
      CACHE PATH "Path to the Kerberos DLLs"
    )
    file( GLOB _kerberos_dlls RELATIVE "${KERBEROS_DLL_DIR}"
      "${KERBEROS_DLL_DIR}/comerr??.dll"
      "${KERBEROS_DLL_DIR}/krb5_??.dll"
      "${KERBEROS_DLL_DIR}/k5sprt??.dll"
    )
    set ( KERBEROS_DLLS ${_kerberos_dlls}
      # We're storing filenames only. Should we use STRING instead?
      CACHE FILEPATH "Kerberos DLL list"
    )
    mark_as_advanced( KERBEROS_DLL_DIR KERBEROS_DLLS )
  endif()
ELSE(KERBEROS_FOUND)
  SET( KERBEROS_LIBRARIES )
  SET( KERBEROS_INCLUDE_DIRS )
  SET( KERBEROS_DLL_DIR )
  SET( KERBEROS_DLLS )
ENDIF(KERBEROS_FOUND)

MARK_AS_ADVANCED( KERBEROS_LIBRARIES KERBEROS_INCLUDE_DIRS )