Adding upstream version 14.2.21.upstream/14.2.21upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 2098 insertions, 0 deletions

diff --git a/src/seastar/cmake/FindBoost.cmake b/src/seastar/cmake/FindBoost.cmake
new file mode 100644
index 00000000..1771d1bc
--- /dev/null
+++ b/src/seastar/cmake/FindBoost.cmake
@@ -0,0 +1,2098 @@
+# Distributed under the OSI-approved BSD 3-Clause License.  See accompanying
+# file Copyright.txt or https://cmake.org/licensing for details.
+
+#.rst:
+# FindBoost
+# ---------
+#
+# Find Boost include dirs and libraries
+#
+# Use this module by invoking find_package with the form::
+#
+#   find_package(Boost
+#     [version] [EXACT]      # Minimum or EXACT version e.g. 1.67.0
+#     [REQUIRED]             # Fail with error if Boost is not found
+#     [COMPONENTS <libs>...] # Boost libraries by their canonical name
+#                            # e.g. "date_time" for "libboost_date_time"
+#     [OPTIONAL_COMPONENTS <libs>...]
+#                            # Optional Boost libraries by their canonical name)
+#     )                      # e.g. "date_time" for "libboost_date_time"
+#
+# This module finds headers and requested component libraries OR a CMake
+# package configuration file provided by a "Boost CMake" build.  For the
+# latter case skip to the "Boost CMake" section below.  For the former
+# case results are reported in variables::
+#
+#   Boost_FOUND            - True if headers and requested libraries were found
+#   Boost_INCLUDE_DIRS     - Boost include directories
+#   Boost_LIBRARY_DIRS     - Link directories for Boost libraries
+#   Boost_LIBRARIES        - Boost component libraries to be linked
+#   Boost_<C>_FOUND        - True if component <C> was found (<C> is upper-case)
+#   Boost_<C>_LIBRARY      - Libraries to link for component <C> (may include
+#                            target_link_libraries debug/optimized keywords)
+#   Boost_VERSION          - BOOST_VERSION value from boost/version.hpp
+#   Boost_LIB_VERSION      - Version string appended to library filenames
+#   Boost_MAJOR_VERSION    - Boost major version number (X in X.y.z)
+#   Boost_MINOR_VERSION    - Boost minor version number (Y in x.Y.z)
+#   Boost_SUBMINOR_VERSION - Boost subminor version number (Z in x.y.Z)
+#   Boost_LIB_DIAGNOSTIC_DEFINITIONS (Windows)
+#                          - Pass to add_definitions() to have diagnostic
+#                            information about Boost's automatic linking
+#                            displayed during compilation
+#
+# Note that Boost Python components require a Python version suffix
+# (Boost 1.67 and later), e.g. ``python36`` or ``python27`` for the
+# versions built against Python 3.6 and 2.7, respectively.  This also
+# applies to additional components using Python including
+# ``mpi_python`` and ``numpy``.  Earlier Boost releases may use
+# distribution-specific suffixes such as ``2``, ``3`` or ``2.7``.
+# These may also be used as suffixes, but note that they are not
+# portable.
+#
+# This module reads hints about search locations from variables::
+#
+#   BOOST_ROOT             - Preferred installation prefix
+#    (or BOOSTROOT)
+#   BOOST_INCLUDEDIR       - Preferred include directory e.g. <prefix>/include
+#   BOOST_LIBRARYDIR       - Preferred library directory e.g. <prefix>/lib
+#   Boost_NO_SYSTEM_PATHS  - Set to ON to disable searching in locations not
+#                            specified by these hint variables. Default is OFF.
+#   Boost_ADDITIONAL_VERSIONS
+#                          - List of Boost versions not known to this module
+#                            (Boost install locations may contain the version)
+#
+# and saves search results persistently in CMake cache entries::
+#
+#   Boost_INCLUDE_DIR         - Directory containing Boost headers
+#   Boost_LIBRARY_DIR_RELEASE - Directory containing release Boost libraries
+#   Boost_LIBRARY_DIR_DEBUG   - Directory containing debug Boost libraries
+#   Boost_<C>_LIBRARY_DEBUG   - Component <C> library debug variant
+#   Boost_<C>_LIBRARY_RELEASE - Component <C> library release variant
+#
+# The following :prop_tgt:`IMPORTED` targets are also defined::
+#
+#   Boost::boost                  - Target for header-only dependencies
+#                                   (Boost include directory)
+#   Boost::<C>                    - Target for specific component dependency
+#                                   (shared or static library); <C> is lower-
+#                                   case
+#   Boost::diagnostic_definitions - interface target to enable diagnostic
+#                                   information about Boost's automatic linking
+#                                   during compilation (adds BOOST_LIB_DIAGNOSTIC)
+#   Boost::disable_autolinking    - interface target to disable automatic
+#                                   linking with MSVC (adds BOOST_ALL_NO_LIB)
+#   Boost::dynamic_linking        - interface target to enable dynamic linking
+#                                   linking with MSVC (adds BOOST_ALL_DYN_LINK)
+#
+# Implicit dependencies such as Boost::filesystem requiring
+# Boost::system will be automatically detected and satisfied, even
+# if system is not specified when using find_package and if
+# Boost::system is not added to target_link_libraries.  If using
+# Boost::thread, then Threads::Threads will also be added automatically.
+#
+# It is important to note that the imported targets behave differently
+# than variables created by this module: multiple calls to
+# find_package(Boost) in the same directory or sub-directories with
+# different options (e.g. static or shared) will not override the
+# values of the targets created by the first call.
+#
+# Users may set these hints or results as cache entries.  Projects
+# should not read these entries directly but instead use the above
+# result variables.  Note that some hint names start in upper-case
+# "BOOST".  One may specify these as environment variables if they are
+# not specified as CMake variables or cache entries.
+#
+# This module first searches for the Boost header files using the above
+# hint variables (excluding BOOST_LIBRARYDIR) and saves the result in
+# Boost_INCLUDE_DIR.  Then it searches for requested component libraries
+# using the above hints (excluding BOOST_INCLUDEDIR and
+# Boost_ADDITIONAL_VERSIONS), "lib" directories near Boost_INCLUDE_DIR,
+# and the library name configuration settings below.  It saves the
+# library directories in Boost_LIBRARY_DIR_DEBUG and
+# Boost_LIBRARY_DIR_RELEASE and individual library
+# locations in Boost_<C>_LIBRARY_DEBUG and Boost_<C>_LIBRARY_RELEASE.
+# When one changes settings used by previous searches in the same build
+# tree (excluding environment variables) this module discards previous
+# search results affected by the changes and searches again.
+#
+# Boost libraries come in many variants encoded in their file name.
+# Users or projects may tell this module which variant to find by
+# setting variables::
+#
+#   Boost_USE_DEBUG_LIBS     - Set to ON or OFF to specify whether to search
+#                              and use the debug libraries.  Default is ON.
+#   Boost_USE_RELEASE_LIBS   - Set to ON or OFF to specify whether to search
+#                              and use the release libraries.  Default is ON.
+#   Boost_USE_MULTITHREADED  - Set to OFF to use the non-multithreaded
+#                              libraries ('mt' tag).  Default is ON.
+#   Boost_USE_STATIC_LIBS    - Set to ON to force the use of the static
+#                              libraries.  Default is OFF.
+#   Boost_USE_STATIC_RUNTIME - Set to ON or OFF to specify whether to use
+#                              libraries linked statically to the C++ runtime
+#                              ('s' tag).  Default is platform dependent.
+#   Boost_USE_DEBUG_RUNTIME  - Set to ON or OFF to specify whether to use
+#                              libraries linked to the MS debug C++ runtime
+#                              ('g' tag).  Default is ON.
+#   Boost_USE_DEBUG_PYTHON   - Set to ON to use libraries compiled with a
+#                              debug Python build ('y' tag). Default is OFF.
+#   Boost_USE_STLPORT        - Set to ON to use libraries compiled with
+#                              STLPort ('p' tag).  Default is OFF.
+#   Boost_USE_STLPORT_DEPRECATED_NATIVE_IOSTREAMS
+#                            - Set to ON to use libraries compiled with
+#                              STLPort deprecated "native iostreams"
+#                              ('n' tag).  Default is OFF.
+#   Boost_COMPILER           - Set to the compiler-specific library suffix
+#                              (e.g. "-gcc43").  Default is auto-computed
+#                              for the C++ compiler in use.  A list may be
+#                              used if multiple compatible suffixes should
+#                              be tested for, in decreasing order of
+#                              preference.
+#   Boost_THREADAPI          - Suffix for "thread" component library name,
+#                              such as "pthread" or "win32".  Names with
+#                              and without this suffix will both be tried.
+#   Boost_NAMESPACE          - Alternate namespace used to build boost with
+#                              e.g. if set to "myboost", will search for
+#                              myboost_thread instead of boost_thread.
+#
+# Other variables one may set to control this module are::
+#
+#   Boost_DEBUG              - Set to ON to enable debug output from FindBoost.
+#                              Please enable this before filing any bug report.
+#   Boost_DETAILED_FAILURE_MSG
+#                            - Set to ON to add detailed information to the
+#                              failure message even when the REQUIRED option
+#                              is not given to the find_package call.
+#   Boost_REALPATH           - Set to ON to resolve symlinks for discovered
+#                              libraries to assist with packaging.  For example,
+#                              the "system" component library may be resolved to
+#                              "/usr/lib/libboost_system.so.1.67.0" instead of
+#                              "/usr/lib/libboost_system.so".  This does not
+#                              affect linking and should not be enabled unless
+#                              the user needs this information.
+#   Boost_LIBRARY_DIR        - Default value for Boost_LIBRARY_DIR_RELEASE and
+#                              Boost_LIBRARY_DIR_DEBUG.
+#
+# On Visual Studio and Borland compilers Boost headers request automatic
+# linking to corresponding libraries.  This requires matching libraries
+# to be linked explicitly or available in the link library search path.
+# In this case setting Boost_USE_STATIC_LIBS to OFF may not achieve
+# dynamic linking.  Boost automatic linking typically requests static
+# libraries with a few exceptions (such as Boost.Python).  Use::
+#
+#   add_definitions(${Boost_LIB_DIAGNOSTIC_DEFINITIONS})
+#
+# to ask Boost to report information about automatic linking requests.
+#
+# Example to find Boost headers only::
+#
+#   find_package(Boost 1.36.0)
+#   if(Boost_FOUND)
+#     include_directories(${Boost_INCLUDE_DIRS})
+#     add_executable(foo foo.cc)
+#   endif()
+#
+# Example to find Boost libraries and use imported targets::
+#
+#   find_package(Boost 1.56 REQUIRED COMPONENTS
+#                date_time filesystem iostreams)
+#   add_executable(foo foo.cc)
+#   target_link_libraries(foo Boost::date_time Boost::filesystem
+#                             Boost::iostreams)
+#
+# Example to find Boost Python 3.6 libraries and use imported targets::
+#
+#   find_package(Boost 1.67 REQUIRED COMPONENTS
+#                python36 numpy36)
+#   add_executable(foo foo.cc)
+#   target_link_libraries(foo Boost::python36 Boost::numpy36)
+#
+# Example to find Boost headers and some *static* (release only) libraries::
+#
+#   set(Boost_USE_STATIC_LIBS        ON)  # only find static libs
+#   set(Boost_USE_DEBUG_LIBS         OFF) # ignore debug libs and
+#   set(Boost_USE_RELEASE_LIBS       ON)  # only find release libs
+#   set(Boost_USE_MULTITHREADED      ON)
+#   set(Boost_USE_STATIC_RUNTIME    OFF)
+#   find_package(Boost 1.66.0 COMPONENTS date_time filesystem system ...)
+#   if(Boost_FOUND)
+#     include_directories(${Boost_INCLUDE_DIRS})
+#     add_executable(foo foo.cc)
+#     target_link_libraries(foo ${Boost_LIBRARIES})
+#   endif()
+#
+# Boost CMake
+# ^^^^^^^^^^^
+#
+# If Boost was built using the boost-cmake project it provides a package
+# configuration file for use with find_package's Config mode.  This
+# module looks for the package configuration file called
+# BoostConfig.cmake or boost-config.cmake and stores the result in cache
+# entry "Boost_DIR".  If found, the package configuration file is loaded
+# and this module returns with no further action.  See documentation of
+# the Boost CMake package configuration for details on what it provides.
+#
+# Set Boost_NO_BOOST_CMAKE to ON to disable the search for boost-cmake.
+
+# Save project's policies
+cmake_policy(PUSH)
+cmake_policy(SET CMP0057 NEW) # if IN_LIST
+
+#-------------------------------------------------------------------------------
+# Before we go searching, check whether boost-cmake is available, unless the
+# user specifically asked NOT to search for boost-cmake.
+#
+# If Boost_DIR is set, this behaves as any find_package call would. If not,
+# it looks at BOOST_ROOT and BOOSTROOT to find Boost.
+#
+if (NOT Boost_NO_BOOST_CMAKE)
+  # If Boost_DIR is not set, look for BOOSTROOT and BOOST_ROOT as alternatives,
+  # since these are more conventional for Boost.
+  if ("$ENV{Boost_DIR}" STREQUAL "")
+    if (NOT "$ENV{BOOST_ROOT}" STREQUAL "")
+      set(ENV{Boost_DIR} $ENV{BOOST_ROOT})
+    elseif (NOT "$ENV{BOOSTROOT}" STREQUAL "")
+      set(ENV{Boost_DIR} $ENV{BOOSTROOT})
+    endif()
+  endif()
+
+  # Do the same find_package call but look specifically for the CMake version.
+  # Note that args are passed in the Boost_FIND_xxxxx variables, so there is no
+  # need to delegate them to this find_package call.
+  find_package(Boost QUIET NO_MODULE)
+  mark_as_advanced(Boost_DIR)
+
+  # If we found boost-cmake, then we're done.  Print out what we found.
+  # Otherwise let the rest of the module try to find it.
+  if (Boost_FOUND)
+    message(STATUS "Boost ${Boost_FIND_VERSION} found.")
+    if (Boost_FIND_COMPONENTS)
+      message(STATUS "Found Boost components:\n   ${Boost_FIND_COMPONENTS}")
+    endif()
+    # Restore project's policies
+    cmake_policy(POP)
+    return()
+  endif()
+endif()
+
+
+#-------------------------------------------------------------------------------
+#  FindBoost functions & macros
+#
+
+############################################
+#
+# Check the existence of the libraries.
+#
+############################################
+# This macro was taken directly from the FindQt4.cmake file that is included
+# with the CMake distribution. This is NOT my work. All work was done by the
+# original authors of the FindQt4.cmake file. Only minor modifications were
+# made to remove references to Qt and make this file more generally applicable
+# And ELSE/ENDIF pairs were removed for readability.
+#########################################################################
+
+macro(_Boost_ADJUST_LIB_VARS basename)
+  if(Boost_INCLUDE_DIR )
+    if(Boost_${basename}_LIBRARY_DEBUG AND Boost_${basename}_LIBRARY_RELEASE)
+      # if the generator is multi-config or if CMAKE_BUILD_TYPE is set for
+      # single-config generators, set optimized and debug libraries
+      get_property(_isMultiConfig GLOBAL PROPERTY GENERATOR_IS_MULTI_CONFIG)
+      if(_isMultiConfig OR CMAKE_BUILD_TYPE)
+        set(Boost_${basename}_LIBRARY optimized ${Boost_${basename}_LIBRARY_RELEASE} debug ${Boost_${basename}_LIBRARY_DEBUG})
+      else()
+        # For single-config generators where CMAKE_BUILD_TYPE has no value,
+        # just use the release libraries
+        set(Boost_${basename}_LIBRARY ${Boost_${basename}_LIBRARY_RELEASE} )
+      endif()
+      # FIXME: This probably should be set for both cases
+      set(Boost_${basename}_LIBRARIES optimized ${Boost_${basename}_LIBRARY_RELEASE} debug ${Boost_${basename}_LIBRARY_DEBUG})
+    endif()
+
+    # if only the release version was found, set the debug variable also to the release version
+    if(Boost_${basename}_LIBRARY_RELEASE AND NOT Boost_${basename}_LIBRARY_DEBUG)
+      set(Boost_${basename}_LIBRARY_DEBUG ${Boost_${basename}_LIBRARY_RELEASE})
+      set(Boost_${basename}_LIBRARY       ${Boost_${basename}_LIBRARY_RELEASE})
+      set(Boost_${basename}_LIBRARIES     ${Boost_${basename}_LIBRARY_RELEASE})
+    endif()
+
+    # if only the debug version was found, set the release variable also to the debug version
+    if(Boost_${basename}_LIBRARY_DEBUG AND NOT Boost_${basename}_LIBRARY_RELEASE)
+      set(Boost_${basename}_LIBRARY_RELEASE ${Boost_${basename}_LIBRARY_DEBUG})
+      set(Boost_${basename}_LIBRARY         ${Boost_${basename}_LIBRARY_DEBUG})
+      set(Boost_${basename}_LIBRARIES       ${Boost_${basename}_LIBRARY_DEBUG})
+    endif()
+
+    # If the debug & release library ends up being the same, omit the keywords
+    if("${Boost_${basename}_LIBRARY_RELEASE}" STREQUAL "${Boost_${basename}_LIBRARY_DEBUG}")
+      set(Boost_${basename}_LIBRARY   ${Boost_${basename}_LIBRARY_RELEASE} )
+      set(Boost_${basename}_LIBRARIES ${Boost_${basename}_LIBRARY_RELEASE} )
+    endif()
+
+    if(Boost_${basename}_LIBRARY AND Boost_${basename}_HEADER)
+      set(Boost_${basename}_FOUND ON)
+      if("x${basename}" STREQUAL "xTHREAD" AND NOT TARGET Threads::Threads)
+        string(APPEND Boost_ERROR_REASON_THREAD " (missing dependency: Threads)")
+        set(Boost_THREAD_FOUND OFF)
+      endif()
+    endif()
+
+  endif()
+  # Make variables changeable to the advanced user
+  mark_as_advanced(
+      Boost_${basename}_LIBRARY_RELEASE
+      Boost_${basename}_LIBRARY_DEBUG
+  )
+endmacro()
+
+# Detect changes in used variables.
+# Compares the current variable value with the last one.
+# In short form:
+# v != v_LAST                      -> CHANGED = 1
+# v is defined, v_LAST not         -> CHANGED = 1
+# v is not defined, but v_LAST is  -> CHANGED = 1
+# otherwise                        -> CHANGED = 0
+# CHANGED is returned in variable named ${changed_var}
+macro(_Boost_CHANGE_DETECT changed_var)
+  set(${changed_var} 0)
+  foreach(v ${ARGN})
+    if(DEFINED _Boost_COMPONENTS_SEARCHED)
+      if(${v})
+        if(_${v}_LAST)
+          string(COMPARE NOTEQUAL "${${v}}" "${_${v}_LAST}" _${v}_CHANGED)
+        else()
+          set(_${v}_CHANGED 1)
+        endif()
+      elseif(_${v}_LAST)
+        set(_${v}_CHANGED 1)
+      endif()
+      if(_${v}_CHANGED)
+        set(${changed_var} 1)
+      endif()
+    else()
+      set(_${v}_CHANGED 0)
+    endif()
+  endforeach()
+endmacro()
+
+#
+# Find the given library (var).
+# Use 'build_type' to support different lib paths for RELEASE or DEBUG builds
+#
+macro(_Boost_FIND_LIBRARY var build_type)
+
+  find_library(${var} ${ARGN})
+
+  if(${var})
+    # If this is the first library found then save Boost_LIBRARY_DIR_[RELEASE,DEBUG].
+    if(NOT Boost_LIBRARY_DIR_${build_type})
+      get_filename_component(_dir "${${var}}" PATH)
+      set(Boost_LIBRARY_DIR_${build_type} "${_dir}" CACHE PATH "Boost library directory ${build_type}" FORCE)
+    endif()
+  elseif(_Boost_FIND_LIBRARY_HINTS_FOR_COMPONENT)
+    # Try component-specific hints but do not save Boost_LIBRARY_DIR_[RELEASE,DEBUG].
+    find_library(${var} HINTS ${_Boost_FIND_LIBRARY_HINTS_FOR_COMPONENT} ${ARGN})
+  endif()
+
+  # If Boost_LIBRARY_DIR_[RELEASE,DEBUG] is known then search only there.
+  if(Boost_LIBRARY_DIR_${build_type})
+    set(_boost_LIBRARY_SEARCH_DIRS_${build_type} ${Boost_LIBRARY_DIR_${build_type}} NO_DEFAULT_PATH NO_CMAKE_FIND_ROOT_PATH)
+    if(Boost_DEBUG)
+      message(STATUS "[ ${CMAKE_CURRENT_LIST_FILE}:${CMAKE_CURRENT_LIST_LINE} ] "
+        " Boost_LIBRARY_DIR_${build_type} = ${Boost_LIBRARY_DIR_${build_type}}"
+        " _boost_LIBRARY_SEARCH_DIRS_${build_type} = ${_boost_LIBRARY_SEARCH_DIRS_${build_type}}")
+    endif()
+  endif()
+endmacro()
+
+#-------------------------------------------------------------------------------
+
+#
+# Runs compiler with "-dumpversion" and parses major/minor
+# version with a regex.
+#
+function(_Boost_COMPILER_DUMPVERSION _OUTPUT_VERSION)
+  string(REGEX REPLACE "([0-9]+)\\.([0-9]+)(\\.[0-9]+)?" "\\1\\2"
+    _boost_COMPILER_VERSION ${CMAKE_CXX_COMPILER_VERSION})
+
+  set(${_OUTPUT_VERSION} ${_boost_COMPILER_VERSION} PARENT_SCOPE)
+endfunction()
+
+#
+# Take a list of libraries with "thread" in it
+# and prepend duplicates with "thread_${Boost_THREADAPI}"
+# at the front of the list
+#
+function(_Boost_PREPEND_LIST_WITH_THREADAPI _output)
+  set(_orig_libnames ${ARGN})
+  string(REPLACE "thread" "thread_${Boost_THREADAPI}" _threadapi_libnames "${_orig_libnames}")
+  set(${_output} ${_threadapi_libnames} ${_orig_libnames} PARENT_SCOPE)
+endfunction()
+
+#
+# If a library is found, replace its cache entry with its REALPATH
+#
+function(_Boost_SWAP_WITH_REALPATH _library _docstring)
+  if(${_library})
+    get_filename_component(_boost_filepathreal ${${_library}} REALPATH)
+    unset(${_library} CACHE)
+    set(${_library} ${_boost_filepathreal} CACHE FILEPATH "${_docstring}")
+  endif()
+endfunction()
+
+function(_Boost_CHECK_SPELLING _var)
+  if(${_var})
+    string(TOUPPER ${_var} _var_UC)
+    message(FATAL_ERROR "ERROR: ${_var} is not the correct spelling.  The proper spelling is ${_var_UC}.")
+  endif()
+endfunction()
+
+# Guesses Boost's compiler prefix used in built library names
+# Returns the guess by setting the variable pointed to by _ret
+function(_Boost_GUESS_COMPILER_PREFIX _ret)
+  if("x${CMAKE_CXX_COMPILER_ID}" STREQUAL "xIntel")
+    if(WIN32)
+      set (_boost_COMPILER "-iw")
+    else()
+      set (_boost_COMPILER "-il")
+    endif()
+  elseif (GHSMULTI)
+    set(_boost_COMPILER "-ghs")
+  elseif("x${CMAKE_CXX_COMPILER_ID}" STREQUAL "xMSVC")
+    if (NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS 19.10)
+      set(_boost_COMPILER "-vc141;-vc140")
+    elseif (NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS 19)
+      set(_boost_COMPILER "-vc140")
+    elseif(NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS 18)
+      set(_boost_COMPILER "-vc120")
+    elseif(NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS 17)
+      set(_boost_COMPILER "-vc110")
+    elseif(NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS 16)
+      set(_boost_COMPILER "-vc100")
+    elseif(NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS 15)
+      set(_boost_COMPILER "-vc90")
+    elseif(NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS 14)
+      set(_boost_COMPILER "-vc80")
+    elseif(NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS 13.10)
+      set(_boost_COMPILER "-vc71")
+    elseif(NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS 13) # Good luck!
+      set(_boost_COMPILER "-vc7") # yes, this is correct
+    else() # VS 6.0 Good luck!
+      set(_boost_COMPILER "-vc6") # yes, this is correct
+    endif()
+  elseif (BORLAND)
+    set(_boost_COMPILER "-bcb")
+  elseif(CMAKE_CXX_COMPILER_ID STREQUAL "SunPro")
+    set(_boost_COMPILER "-sw")
+  elseif(CMAKE_CXX_COMPILER_ID STREQUAL "XL")
+    set(_boost_COMPILER "-xlc")
+  elseif (MINGW)
+    if(${Boost_MAJOR_VERSION}.${Boost_MINOR_VERSION} VERSION_LESS 1.34)
+        set(_boost_COMPILER "-mgw") # no GCC version encoding prior to 1.34
+    else()
+      _Boost_COMPILER_DUMPVERSION(_boost_COMPILER_VERSION)
+      set(_boost_COMPILER "-mgw${_boost_COMPILER_VERSION}")
+    endif()
+  elseif (UNIX)
+    if (CMAKE_COMPILER_IS_GNUCXX)
+      if(${Boost_MAJOR_VERSION}.${Boost_MINOR_VERSION} VERSION_LESS 1.34)
+        set(_boost_COMPILER "-gcc") # no GCC version encoding prior to 1.34
+      else()
+        _Boost_COMPILER_DUMPVERSION(_boost_COMPILER_VERSION)
+        # Determine which version of GCC we have.
+        if(APPLE)
+          if(Boost_MINOR_VERSION)
+            if(${Boost_MINOR_VERSION} GREATER 35)
+              # In Boost 1.36.0 and newer, the mangled compiler name used
+              # on Mac OS X/Darwin is "xgcc".
+              set(_boost_COMPILER "-xgcc${_boost_COMPILER_VERSION}")
+            else()
+              # In Boost <= 1.35.0, there is no mangled compiler name for
+              # the Mac OS X/Darwin version of GCC.
+              set(_boost_COMPILER "")
+            endif()
+          else()
+            # We don't know the Boost version, so assume it's
+            # pre-1.36.0.
+            set(_boost_COMPILER "")
+          endif()
+        else()
+          set(_boost_COMPILER "-gcc${_boost_COMPILER_VERSION}")
+        endif()
+      endif()
+    endif ()
+  else()
+    # TODO at least Boost_DEBUG here?
+    set(_boost_COMPILER "")
+  endif()
+  set(${_ret} ${_boost_COMPILER} PARENT_SCOPE)
+endfunction()
+
+#
+# Get component dependencies.  Requires the dependencies to have been
+# defined for the Boost release version.
+#
+# component - the component to check
+# _ret - list of library dependencies
+#
+function(_Boost_COMPONENT_DEPENDENCIES component _ret)
+  # Note: to add a new Boost release, run
+  #
+  #   % cmake -DBOOST_DIR=/path/to/boost/source -P Utilities/Scripts/BoostScanDeps.cmake
+  #
+  # The output may be added in a new block below.  If it's the same as
+  # the previous release, simply update the version range of the block
+  # for the previous release.  Also check if any new components have
+  # been added, and add any new components to
+  # _Boost_COMPONENT_HEADERS.
+  #
+  # This information was originally generated by running
+  # BoostScanDeps.cmake against every boost release to date supported
+  # by FindBoost:
+  #
+  #   % for version in /path/to/boost/sources/*
+  #     do
+  #       cmake -DBOOST_DIR=$version -P Utilities/Scripts/BoostScanDeps.cmake
+  #     done
+  #
+  # The output was then updated by search and replace with these regexes:
+  #
+  # - Strip message(STATUS) prefix dashes
+  #   s;^-- ;;
+  # - Indent
+  #   s;^set(;    set(;;
+  # - Add conditionals
+  #   s;Scanning /path/to/boost/sources/boost_\(.*\)_\(.*\)_\(.*);  elseif(NOT Boost_VERSION VERSION_LESS \10\20\3 AND Boost_VERSION VERSION_LESS xxxx);
+  #
+  # This results in the logic seen below, but will require the xxxx
+  # replacing with the following Boost release version (or the next
+  # minor version to be released, e.g. 1.59 was the latest at the time
+  # of writing, making 1.60 the next, so 106000 is the needed version
+  # number).  Identical consecutive releases were then merged together
+  # by updating the end range of the first block and removing the
+  # following redundant blocks.
+  #
+  # Running the script against all historical releases should be
+  # required only if the BoostScanDeps.cmake script logic is changed.
+  # The addition of a new release should only require it to be run
+  # against the new release.
+
+  # Handle Python version suffixes
+  if(component MATCHES "^(python|mpi_python|numpy)([0-9][0-9]?|[0-9]\\.[0-9])\$")
+    set(component "${CMAKE_MATCH_1}")
+    set(component_python_version "${CMAKE_MATCH_2}")
+  endif()
+
+  set(_Boost_IMPORTED_TARGETS TRUE)
+  if(Boost_VERSION VERSION_LESS 103300)
+    message(WARNING "Imported targets and dependency information not available for Boost version ${Boost_VERSION} (all versions older than 1.33)")
+    set(_Boost_IMPORTED_TARGETS FALSE)
+  elseif(NOT Boost_VERSION VERSION_LESS 103300 AND Boost_VERSION VERSION_LESS 103500)
+    set(_Boost_IOSTREAMS_DEPENDENCIES regex thread)
+    set(_Boost_REGEX_DEPENDENCIES thread)
+    set(_Boost_WAVE_DEPENDENCIES filesystem thread)
+    set(_Boost_WSERIALIZATION_DEPENDENCIES serialization)
+  elseif(NOT Boost_VERSION VERSION_LESS 103500 AND Boost_VERSION VERSION_LESS 103600)
+    set(_Boost_FILESYSTEM_DEPENDENCIES system)
+    set(_Boost_IOSTREAMS_DEPENDENCIES regex)
+    set(_Boost_MPI_DEPENDENCIES serialization)
+    set(_Boost_MPI_PYTHON_DEPENDENCIES python${component_python_version} mpi serialization)
+    set(_Boost_WAVE_DEPENDENCIES filesystem system thread)
+    set(_Boost_WSERIALIZATION_DEPENDENCIES serialization)
+  elseif(NOT Boost_VERSION VERSION_LESS 103600 AND Boost_VERSION VERSION_LESS 103800)
+    set(_Boost_FILESYSTEM_DEPENDENCIES system)
+    set(_Boost_IOSTREAMS_DEPENDENCIES regex)
+    set(_Boost_MATH_DEPENDENCIES math_c99 math_c99f math_c99l math_tr1 math_tr1f math_tr1l)
+    set(_Boost_MPI_DEPENDENCIES serialization)
+    set(_Boost_MPI_PYTHON_DEPENDENCIES python${component_python_version} mpi serialization)
+    set(_Boost_WAVE_DEPENDENCIES filesystem system thread)
+    set(_Boost_WSERIALIZATION_DEPENDENCIES serialization)
+  elseif(NOT Boost_VERSION VERSION_LESS 103800 AND Boost_VERSION VERSION_LESS 104300)
+    set(_Boost_FILESYSTEM_DEPENDENCIES system)
+    set(_Boost_IOSTREAMS_DEPENDENCIES regex)
+    set(_Boost_MATH_DEPENDENCIES math_c99 math_c99f math_c99l math_tr1 math_tr1f math_tr1l)
+    set(_Boost_MPI_DEPENDENCIES serialization)
+    set(_Boost_MPI_PYTHON_DEPENDENCIES python${component_python_version} mpi serialization)
+    set(_Boost_THREAD_DEPENDENCIES date_time)
+    set(_Boost_WAVE_DEPENDENCIES filesystem system thread date_time)
+    set(_Boost_WSERIALIZATION_DEPENDENCIES serialization)
+  elseif(NOT Boost_VERSION VERSION_LESS 104300 AND Boost_VERSION VERSION_LESS 104400)
+    set(_Boost_FILESYSTEM_DEPENDENCIES system)
+    set(_Boost_IOSTREAMS_DEPENDENCIES regex)
+    set(_Boost_MATH_DEPENDENCIES math_c99 math_c99f math_c99l math_tr1 math_tr1f math_tr1l random)
+    set(_Boost_MPI_DEPENDENCIES serialization)
+    set(_Boost_MPI_PYTHON_DEPENDENCIES python${component_python_version} mpi serialization)
+    set(_Boost_THREAD_DEPENDENCIES date_time)
+    set(_Boost_WAVE_DEPENDENCIES filesystem system thread date_time)
+    set(_Boost_WSERIALIZATION_DEPENDENCIES serialization)
+  elseif(NOT Boost_VERSION VERSION_LESS 104400 AND Boost_VERSION VERSION_LESS 104500)
+    set(_Boost_FILESYSTEM_DEPENDENCIES system)
+    set(_Boost_IOSTREAMS_DEPENDENCIES regex)
+    set(_Boost_MATH_DEPENDENCIES math_c99 math_c99f math_c99l math_tr1 math_tr1f math_tr1l random serialization)
+    set(_Boost_MPI_DEPENDENCIES serialization)
+    set(_Boost_MPI_PYTHON_DEPENDENCIES python${component_python_version} mpi serialization)
+    set(_Boost_THREAD_DEPENDENCIES date_time)
+    set(_Boost_WAVE_DEPENDENCIES serialization filesystem system thread date_time)
+    set(_Boost_WSERIALIZATION_DEPENDENCIES serialization)
+  elseif(NOT Boost_VERSION VERSION_LESS 104500 AND Boost_VERSION VERSION_LESS 104700)
+    set(_Boost_FILESYSTEM_DEPENDENCIES system)
+    set(_Boost_IOSTREAMS_DEPENDENCIES regex)
+    set(_Boost_MATH_DEPENDENCIES math_c99 math_c99f math_c99l math_tr1 math_tr1f math_tr1l random)
+    set(_Boost_MPI_DEPENDENCIES serialization)
+    set(_Boost_MPI_PYTHON_DEPENDENCIES python${component_python_version} mpi serialization)
+    set(_Boost_THREAD_DEPENDENCIES date_time)
+    set(_Boost_WAVE_DEPENDENCIES filesystem system serialization thread date_time)
+    set(_Boost_WSERIALIZATION_DEPENDENCIES serialization)
+  elseif(NOT Boost_VERSION VERSION_LESS 104700 AND Boost_VERSION VERSION_LESS 104800)
+    set(_Boost_CHRONO_DEPENDENCIES system)
+    set(_Boost_FILESYSTEM_DEPENDENCIES system)
+    set(_Boost_IOSTREAMS_DEPENDENCIES regex)
+    set(_Boost_MATH_DEPENDENCIES math_c99 math_c99f math_c99l math_tr1 math_tr1f math_tr1l random)
+    set(_Boost_MPI_DEPENDENCIES serialization)
+    set(_Boost_MPI_PYTHON_DEPENDENCIES python${component_python_version} mpi serialization)
+    set(_Boost_THREAD_DEPENDENCIES date_time)
+    set(_Boost_WAVE_DEPENDENCIES filesystem system serialization thread date_time)
+    set(_Boost_WSERIALIZATION_DEPENDENCIES serialization)
+  elseif(NOT Boost_VERSION VERSION_LESS 104800 AND Boost_VERSION VERSION_LESS 105000)
+    set(_Boost_CHRONO_DEPENDENCIES system)
+    set(_Boost_FILESYSTEM_DEPENDENCIES system)
+    set(_Boost_IOSTREAMS_DEPENDENCIES regex)
+    set(_Boost_MATH_DEPENDENCIES math_c99 math_c99f math_c99l math_tr1 math_tr1f math_tr1l random)
+    set(_Boost_MPI_DEPENDENCIES serialization)
+    set(_Boost_MPI_PYTHON_DEPENDENCIES python${component_python_version} mpi serialization)
+    set(_Boost_THREAD_DEPENDENCIES date_time)
+    set(_Boost_TIMER_DEPENDENCIES chrono system)
+    set(_Boost_WAVE_DEPENDENCIES filesystem system serialization thread date_time)
+    set(_Boost_WSERIALIZATION_DEPENDENCIES serialization)
+  elseif(NOT Boost_VERSION VERSION_LESS 105000 AND Boost_VERSION VERSION_LESS 105300)
+    set(_Boost_CHRONO_DEPENDENCIES system)
+    set(_Boost_FILESYSTEM_DEPENDENCIES system)
+    set(_Boost_IOSTREAMS_DEPENDENCIES regex)
+    set(_Boost_MATH_DEPENDENCIES math_c99 math_c99f math_c99l math_tr1 math_tr1f math_tr1l regex random)
+    set(_Boost_MPI_DEPENDENCIES serialization)
+    set(_Boost_MPI_PYTHON_DEPENDENCIES python${component_python_version} mpi serialization)
+    set(_Boost_THREAD_DEPENDENCIES chrono system date_time)
+    set(_Boost_TIMER_DEPENDENCIES chrono system)
+    set(_Boost_WAVE_DEPENDENCIES filesystem system serialization thread chrono date_time)
+    set(_Boost_WSERIALIZATION_DEPENDENCIES serialization)
+  elseif(NOT Boost_VERSION VERSION_LESS 105300 AND Boost_VERSION VERSION_LESS 105400)
+    set(_Boost_ATOMIC_DEPENDENCIES thread chrono system date_time)
+    set(_Boost_CHRONO_DEPENDENCIES system)
+    set(_Boost_FILESYSTEM_DEPENDENCIES system)
+    set(_Boost_IOSTREAMS_DEPENDENCIES regex)
+    set(_Boost_MATH_DEPENDENCIES math_c99 math_c99f math_c99l math_tr1 math_tr1f math_tr1l regex random)
+    set(_Boost_MPI_DEPENDENCIES serialization)
+    set(_Boost_MPI_PYTHON_DEPENDENCIES python${component_python_version} mpi serialization)
+    set(_Boost_THREAD_DEPENDENCIES chrono system date_time atomic)
+    set(_Boost_TIMER_DEPENDENCIES chrono system)
+    set(_Boost_WAVE_DEPENDENCIES filesystem system serialization thread chrono date_time)
+    set(_Boost_WSERIALIZATION_DEPENDENCIES serialization)
+  elseif(NOT Boost_VERSION VERSION_LESS 105400 AND Boost_VERSION VERSION_LESS 105500)
+    set(_Boost_ATOMIC_DEPENDENCIES thread chrono system date_time)
+    set(_Boost_CHRONO_DEPENDENCIES system)
+    set(_Boost_FILESYSTEM_DEPENDENCIES system)
+    set(_Boost_IOSTREAMS_DEPENDENCIES regex)
+    set(_Boost_LOG_DEPENDENCIES log_setup date_time system filesystem thread regex chrono)
+    set(_Boost_MATH_DEPENDENCIES math_c99 math_c99f math_c99l math_tr1 math_tr1f math_tr1l regex random)
+    set(_Boost_MPI_DEPENDENCIES serialization)
+    set(_Boost_MPI_PYTHON_DEPENDENCIES python${component_python_version} mpi serialization)
+    set(_Boost_THREAD_DEPENDENCIES chrono system date_time atomic)
+    set(_Boost_TIMER_DEPENDENCIES chrono system)
+    set(_Boost_WAVE_DEPENDENCIES filesystem system serialization thread chrono date_time atomic)
+    set(_Boost_WSERIALIZATION_DEPENDENCIES serialization)
+  elseif(NOT Boost_VERSION VERSION_LESS 105500 AND Boost_VERSION VERSION_LESS 105600)
+    set(_Boost_CHRONO_DEPENDENCIES system)
+    set(_Boost_COROUTINE_DEPENDENCIES context system)
+    set(_Boost_FILESYSTEM_DEPENDENCIES system)
+    set(_Boost_IOSTREAMS_DEPENDENCIES regex)
+    set(_Boost_LOG_DEPENDENCIES log_setup date_time system filesystem thread regex chrono)
+    set(_Boost_MATH_DEPENDENCIES math_c99 math_c99f math_c99l math_tr1 math_tr1f math_tr1l regex random)
+    set(_Boost_MPI_DEPENDENCIES serialization)
+    set(_Boost_MPI_PYTHON_DEPENDENCIES python${component_python_version} mpi serialization)
+    set(_Boost_THREAD_DEPENDENCIES chrono system date_time atomic)
+    set(_Boost_TIMER_DEPENDENCIES chrono system)
+    set(_Boost_WAVE_DEPENDENCIES filesystem system serialization thread chrono date_time atomic)
+    set(_Boost_WSERIALIZATION_DEPENDENCIES serialization)
+  elseif(NOT Boost_VERSION VERSION_LESS 105600 AND Boost_VERSION VERSION_LESS 105900)
+    set(_Boost_CHRONO_DEPENDENCIES system)
+    set(_Boost_COROUTINE_DEPENDENCIES context system)
+    set(_Boost_FILESYSTEM_DEPENDENCIES system)
+    set(_Boost_IOSTREAMS_DEPENDENCIES regex)
+    set(_Boost_LOG_DEPENDENCIES log_setup date_time system filesystem thread regex chrono)
+    set(_Boost_MATH_DEPENDENCIES math_c99 math_c99f math_c99l math_tr1 math_tr1f math_tr1l atomic)
+    set(_Boost_MPI_DEPENDENCIES serialization)
+    set(_Boost_MPI_PYTHON_DEPENDENCIES python${component_python_version} mpi serialization)
+    set(_Boost_RANDOM_DEPENDENCIES system)
+    set(_Boost_THREAD_DEPENDENCIES chrono system date_time atomic)
+    set(_Boost_TIMER_DEPENDENCIES chrono system)
+    set(_Boost_WAVE_DEPENDENCIES filesystem system serialization thread chrono date_time atomic)
+    set(_Boost_WSERIALIZATION_DEPENDENCIES serialization)
+  elseif(NOT Boost_VERSION VERSION_LESS 105900 AND Boost_VERSION VERSION_LESS 106000)
+    set(_Boost_CHRONO_DEPENDENCIES system)
+    set(_Boost_COROUTINE_DEPENDENCIES context system)
+    set(_Boost_FILESYSTEM_DEPENDENCIES system)
+    set(_Boost_IOSTREAMS_DEPENDENCIES regex)
+    set(_Boost_LOG_DEPENDENCIES log_setup date_time system filesystem thread regex chrono atomic)
+    set(_Boost_MATH_DEPENDENCIES math_c99 math_c99f math_c99l math_tr1 math_tr1f math_tr1l atomic)
+    set(_Boost_MPI_DEPENDENCIES serialization)
+    set(_Boost_MPI_PYTHON_DEPENDENCIES python${component_python_version} mpi serialization)
+    set(_Boost_RANDOM_DEPENDENCIES system)
+    set(_Boost_THREAD_DEPENDENCIES chrono system date_time atomic)
+    set(_Boost_TIMER_DEPENDENCIES chrono system)
+    set(_Boost_WAVE_DEPENDENCIES filesystem system serialization thread chrono date_time atomic)
+    set(_Boost_WSERIALIZATION_DEPENDENCIES serialization)
+  elseif(NOT Boost_VERSION VERSION_LESS 106000 AND Boost_VERSION VERSION_LESS 106100)
+    set(_Boost_CHRONO_DEPENDENCIES system)
+    set(_Boost_COROUTINE_DEPENDENCIES context system)
+    set(_Boost_FILESYSTEM_DEPENDENCIES system)
+    set(_Boost_IOSTREAMS_DEPENDENCIES regex)
+    set(_Boost_LOG_DEPENDENCIES date_time log_setup system filesystem thread regex chrono atomic)
+    set(_Boost_MATH_DEPENDENCIES math_c99 math_c99f math_c99l math_tr1 math_tr1f math_tr1l atomic)
+    set(_Boost_MPI_DEPENDENCIES serialization)
+    set(_Boost_MPI_PYTHON_DEPENDENCIES python${component_python_version} mpi serialization)
+    set(_Boost_RANDOM_DEPENDENCIES system)
+    set(_Boost_THREAD_DEPENDENCIES chrono system date_time atomic)
+    set(_Boost_TIMER_DEPENDENCIES chrono system)
+    set(_Boost_WAVE_DEPENDENCIES filesystem system serialization thread chrono date_time atomic)
+    set(_Boost_WSERIALIZATION_DEPENDENCIES serialization)
+  elseif(NOT Boost_VERSION VERSION_LESS 106100 AND Boost_VERSION VERSION_LESS 106200)
+    set(_Boost_CHRONO_DEPENDENCIES system)
+    set(_Boost_CONTEXT_DEPENDENCIES thread chrono system date_time)
+    set(_Boost_COROUTINE_DEPENDENCIES context system)
+    set(_Boost_FILESYSTEM_DEPENDENCIES system)
+    set(_Boost_IOSTREAMS_DEPENDENCIES regex)
+    set(_Boost_LOG_DEPENDENCIES date_time log_setup system filesystem thread regex chrono atomic)
+    set(_Boost_MATH_DEPENDENCIES math_c99 math_c99f math_c99l math_tr1 math_tr1f math_tr1l atomic)
+    set(_Boost_MPI_DEPENDENCIES serialization)
+    set(_Boost_MPI_PYTHON_DEPENDENCIES python${component_python_version} mpi serialization)
+    set(_Boost_RANDOM_DEPENDENCIES system)
+    set(_Boost_THREAD_DEPENDENCIES chrono system date_time atomic)
+    set(_Boost_WAVE_DEPENDENCIES filesystem system serialization thread chrono date_time atomic)
+    set(_Boost_WSERIALIZATION_DEPENDENCIES serialization)
+  elseif(NOT Boost_VERSION VERSION_LESS 106200 AND Boost_VERSION VERSION_LESS 106300)
+    set(_Boost_CHRONO_DEPENDENCIES system)
+    set(_Boost_CONTEXT_DEPENDENCIES thread chrono system date_time)
+    set(_Boost_COROUTINE_DEPENDENCIES context system)
+    set(_Boost_FIBER_DEPENDENCIES context thread chrono system date_time)
+    set(_Boost_FILESYSTEM_DEPENDENCIES system)
+    set(_Boost_IOSTREAMS_DEPENDENCIES regex)
+    set(_Boost_LOG_DEPENDENCIES date_time log_setup system filesystem thread regex chrono atomic)
+    set(_Boost_MATH_DEPENDENCIES math_c99 math_c99f math_c99l math_tr1 math_tr1f math_tr1l atomic)
+    set(_Boost_MPI_DEPENDENCIES serialization)
+    set(_Boost_MPI_PYTHON_DEPENDENCIES python${component_python_version} mpi serialization)
+    set(_Boost_RANDOM_DEPENDENCIES system)
+    set(_Boost_THREAD_DEPENDENCIES chrono system date_time atomic)
+    set(_Boost_WAVE_DEPENDENCIES filesystem system serialization thread chrono date_time atomic)
+    set(_Boost_WSERIALIZATION_DEPENDENCIES serialization)
+  elseif(NOT Boost_VERSION VERSION_LESS 106300 AND Boost_VERSION VERSION_LESS 106500)
+    set(_Boost_CHRONO_DEPENDENCIES system)
+    set(_Boost_CONTEXT_DEPENDENCIES thread chrono system date_time)
+    set(_Boost_COROUTINE_DEPENDENCIES context system)
+    set(_Boost_COROUTINE2_DEPENDENCIES context fiber thread chrono system date_time)
+    set(_Boost_FIBER_DEPENDENCIES context thread chrono system date_time)
+    set(_Boost_FILESYSTEM_DEPENDENCIES system)
+    set(_Boost_IOSTREAMS_DEPENDENCIES regex)
+    set(_Boost_LOG_DEPENDENCIES date_time log_setup system filesystem thread regex chrono atomic)
+    set(_Boost_MATH_DEPENDENCIES math_c99 math_c99f math_c99l math_tr1 math_tr1f math_tr1l atomic)
+    set(_Boost_MPI_DEPENDENCIES serialization)
+    set(_Boost_MPI_PYTHON_DEPENDENCIES python${component_python_version} mpi serialization)
+    set(_Boost_RANDOM_DEPENDENCIES system)
+    set(_Boost_THREAD_DEPENDENCIES chrono system date_time atomic)
+    set(_Boost_WAVE_DEPENDENCIES filesystem system serialization thread chrono date_time atomic)
+    set(_Boost_WSERIALIZATION_DEPENDENCIES serialization)
+  elseif(NOT Boost_VERSION VERSION_LESS 106500 AND Boost_VERSION VERSION_LESS 106700)
+    set(_Boost_CHRONO_DEPENDENCIES system)
+    set(_Boost_CONTEXT_DEPENDENCIES thread chrono system date_time)
+    set(_Boost_COROUTINE_DEPENDENCIES context system)
+    set(_Boost_FIBER_DEPENDENCIES context thread chrono system date_time)
+    set(_Boost_FILESYSTEM_DEPENDENCIES system)
+    set(_Boost_IOSTREAMS_DEPENDENCIES regex)
+    set(_Boost_LOG_DEPENDENCIES date_time log_setup system filesystem thread regex chrono atomic)
+    set(_Boost_MATH_DEPENDENCIES math_c99 math_c99f math_c99l math_tr1 math_tr1f math_tr1l atomic)
+    set(_Boost_MPI_DEPENDENCIES serialization)
+    set(_Boost_MPI_PYTHON_DEPENDENCIES python${component_python_version} mpi serialization)
+    set(_Boost_NUMPY_DEPENDENCIES python${component_python_version})
+    set(_Boost_RANDOM_DEPENDENCIES system)
+    set(_Boost_THREAD_DEPENDENCIES chrono system date_time atomic)
+    set(_Boost_TIMER_DEPENDENCIES chrono system)
+    set(_Boost_WAVE_DEPENDENCIES filesystem system serialization thread chrono date_time atomic)
+    set(_Boost_WSERIALIZATION_DEPENDENCIES serialization)
+  else()
+    if(NOT Boost_VERSION VERSION_LESS 106700)
+      set(_Boost_CHRONO_DEPENDENCIES system)
+      set(_Boost_CONTEXT_DEPENDENCIES thread chrono system date_time)
+      set(_Boost_COROUTINE_DEPENDENCIES context system)
+      set(_Boost_FIBER_DEPENDENCIES context thread chrono system date_time)
+      set(_Boost_FILESYSTEM_DEPENDENCIES system)
+      set(_Boost_IOSTREAMS_DEPENDENCIES regex)
+      set(_Boost_LOG_DEPENDENCIES date_time log_setup system filesystem thread regex chrono atomic)
+      set(_Boost_MATH_DEPENDENCIES math_c99 math_c99f math_c99l math_tr1 math_tr1f math_tr1l atomic)
+      set(_Boost_MPI_DEPENDENCIES serialization)
+      set(_Boost_MPI_PYTHON_DEPENDENCIES python${component_python_version} mpi serialization)
+      set(_Boost_NUMPY_DEPENDENCIES python${component_python_version})
+      set(_Boost_RANDOM_DEPENDENCIES system)
+      set(_Boost_THREAD_DEPENDENCIES chrono system date_time atomic)
+      set(_Boost_TIMER_DEPENDENCIES chrono system)
+      set(_Boost_WAVE_DEPENDENCIES filesystem system serialization thread chrono date_time atomic)
+      set(_Boost_WSERIALIZATION_DEPENDENCIES serialization)
+    endif()
+    if(NOT Boost_VERSION VERSION_LESS 106800)
+      message(WARNING "New Boost version may have incorrect or missing dependencies and imported targets")
+    endif()
+  endif()
+
+  string(TOUPPER ${component} uppercomponent)
+  set(${_ret} ${_Boost_${uppercomponent}_DEPENDENCIES} PARENT_SCOPE)
+  set(_Boost_IMPORTED_TARGETS ${_Boost_IMPORTED_TARGETS} PARENT_SCOPE)
+
+  string(REGEX REPLACE ";" " " _boost_DEPS_STRING "${_Boost_${uppercomponent}_DEPENDENCIES}")
+  if (NOT _boost_DEPS_STRING)
+    set(_boost_DEPS_STRING "(none)")
+  endif()
+  # message(STATUS "Dependencies for Boost::${component}: ${_boost_DEPS_STRING}")
+endfunction()
+
+#
+# Get component headers.  This is the primary header (or headers) for
+# a given component, and is used to check that the headers are present
+# as well as the library itself as an extra sanity check of the build
+# environment.
+#
+# component - the component to check
+# _hdrs
+#
+function(_Boost_COMPONENT_HEADERS component _hdrs)
+  # Handle Python version suffixes
+  if(component MATCHES "^(python|mpi_python|numpy)([0-9][0-9]?|[0-9]\\.[0-9])\$")
+    set(component "${CMAKE_MATCH_1}")
+    set(component_python_version "${CMAKE_MATCH_2}")
+  endif()
+
+  # Note: new boost components will require adding here.  The header
+  # must be present in all versions of Boost providing a library.
+  set(_Boost_ATOMIC_HEADERS              "boost/atomic.hpp")
+  set(_Boost_CHRONO_HEADERS              "boost/chrono.hpp")
+  set(_Boost_CONTAINER_HEADERS           "boost/container/container_fwd.hpp")
+  set(_Boost_CONTEXT_HEADERS             "boost/context/all.hpp")
+  set(_Boost_COROUTINE_HEADERS           "boost/coroutine/all.hpp")
+  set(_Boost_DATE_TIME_HEADERS           "boost/date_time/date.hpp")
+  set(_Boost_EXCEPTION_HEADERS           "boost/exception/exception.hpp")
+  set(_Boost_FIBER_HEADERS               "boost/fiber/all.hpp")
+  set(_Boost_FILESYSTEM_HEADERS          "boost/filesystem/path.hpp")
+  set(_Boost_GRAPH_HEADERS               "boost/graph/adjacency_list.hpp")
+  set(_Boost_GRAPH_PARALLEL_HEADERS      "boost/graph/adjacency_list.hpp")
+  set(_Boost_IOSTREAMS_HEADERS           "boost/iostreams/stream.hpp")
+  set(_Boost_LOCALE_HEADERS              "boost/locale.hpp")
+  set(_Boost_LOG_HEADERS                 "boost/log/core.hpp")
+  set(_Boost_LOG_SETUP_HEADERS           "boost/log/detail/setup_config.hpp")
+  set(_Boost_MATH_HEADERS                "boost/math_fwd.hpp")
+  set(_Boost_MATH_C99_HEADERS            "boost/math/tr1.hpp")
+  set(_Boost_MATH_C99F_HEADERS           "boost/math/tr1.hpp")
+  set(_Boost_MATH_C99L_HEADERS           "boost/math/tr1.hpp")
+  set(_Boost_MATH_TR1_HEADERS            "boost/math/tr1.hpp")
+  set(_Boost_MATH_TR1F_HEADERS           "boost/math/tr1.hpp")
+  set(_Boost_MATH_TR1L_HEADERS           "boost/math/tr1.hpp")
+  set(_Boost_MPI_HEADERS                 "boost/mpi.hpp")
+  set(_Boost_MPI_PYTHON_HEADERS          "boost/mpi/python/config.hpp")
+  set(_Boost_NUMPY_HEADERS               "boost/python/numpy.hpp")
+  set(_Boost_PRG_EXEC_MONITOR_HEADERS    "boost/test/prg_exec_monitor.hpp")
+  set(_Boost_PROGRAM_OPTIONS_HEADERS     "boost/program_options.hpp")
+  set(_Boost_PYTHON_HEADERS              "boost/python.hpp")
+  set(_Boost_RANDOM_HEADERS              "boost/random.hpp")
+  set(_Boost_REGEX_HEADERS               "boost/regex.hpp")
+  set(_Boost_SERIALIZATION_HEADERS       "boost/serialization/serialization.hpp")
+  set(_Boost_SIGNALS_HEADERS             "boost/signals.hpp")
+  set(_Boost_SYSTEM_HEADERS              "boost/system/config.hpp")
+  set(_Boost_TEST_EXEC_MONITOR_HEADERS   "boost/test/test_exec_monitor.hpp")
+  set(_Boost_THREAD_HEADERS              "boost/thread.hpp")
+  set(_Boost_TIMER_HEADERS               "boost/timer.hpp")
+  set(_Boost_TYPE_ERASURE_HEADERS        "boost/type_erasure/config.hpp")
+  set(_Boost_UNIT_TEST_FRAMEWORK_HEADERS "boost/test/framework.hpp")
+  set(_Boost_WAVE_HEADERS                "boost/wave.hpp")
+  set(_Boost_WSERIALIZATION_HEADERS      "boost/archive/text_wiarchive.hpp")
+  if(WIN32)
+    set(_Boost_BZIP2_HEADERS             "boost/iostreams/filter/bzip2.hpp")
+    set(_Boost_ZLIB_HEADERS              "boost/iostreams/filter/zlib.hpp")
+  endif()
+
+  string(TOUPPER ${component} uppercomponent)
+  set(${_hdrs} ${_Boost_${uppercomponent}_HEADERS} PARENT_SCOPE)
+
+  string(REGEX REPLACE ";" " " _boost_HDRS_STRING "${_Boost_${uppercomponent}_HEADERS}")
+  if (NOT _boost_HDRS_STRING)
+    set(_boost_HDRS_STRING "(none)")
+  endif()
+  # message(STATUS "Headers for Boost::${component}: ${_boost_HDRS_STRING}")
+endfunction()
+
+#
+# Determine if any missing dependencies require adding to the component list.
+#
+# Sets _Boost_${COMPONENT}_DEPENDENCIES for each required component,
+# plus _Boost_IMPORTED_TARGETS (TRUE if imported targets should be
+# defined; FALSE if dependency information is unavailable).
+#
+# componentvar - the component list variable name
+# extravar - the indirect dependency list variable name
+#
+#
+function(_Boost_MISSING_DEPENDENCIES componentvar extravar)
+  # _boost_unprocessed_components - list of components requiring processing
+  # _boost_processed_components - components already processed (or currently being processed)
+  # _boost_new_components - new components discovered for future processing
+  #
+  list(APPEND _boost_unprocessed_components ${${componentvar}})
+
+  while(_boost_unprocessed_components)
+    list(APPEND _boost_processed_components ${_boost_unprocessed_components})
+    foreach(component ${_boost_unprocessed_components})
+      string(TOUPPER ${component} uppercomponent)
+      set(${_ret} ${_Boost_${uppercomponent}_DEPENDENCIES} PARENT_SCOPE)
+      _Boost_COMPONENT_DEPENDENCIES("${component}" _Boost_${uppercomponent}_DEPENDENCIES)
+      set(_Boost_${uppercomponent}_DEPENDENCIES ${_Boost_${uppercomponent}_DEPENDENCIES} PARENT_SCOPE)
+      set(_Boost_IMPORTED_TARGETS ${_Boost_IMPORTED_TARGETS} PARENT_SCOPE)
+      foreach(componentdep ${_Boost_${uppercomponent}_DEPENDENCIES})
+        if (NOT ("${componentdep}" IN_LIST _boost_processed_components OR "${componentdep}" IN_LIST _boost_new_components))
+          list(APPEND _boost_new_components ${componentdep})
+        endif()
+      endforeach()
+    endforeach()
+    set(_boost_unprocessed_components ${_boost_new_components})
+    unset(_boost_new_components)
+  endwhile()
+  set(_boost_extra_components ${_boost_processed_components})
+  if(_boost_extra_components AND ${componentvar})
+    list(REMOVE_ITEM _boost_extra_components ${${componentvar}})
+  endif()
+  set(${componentvar} ${_boost_processed_components} PARENT_SCOPE)
+  set(${extravar} ${_boost_extra_components} PARENT_SCOPE)
+endfunction()
+
+#
+# Some boost libraries may require particular set of compler features.
+# The very first one was `boost::fiber` introduced in Boost 1.62.
+# One can check required compiler features of it in
+# `${Boost_ROOT}/libs/fiber/build/Jamfile.v2`.
+#
+function(_Boost_COMPILER_FEATURES component _ret)
+  # Boost >= 1.62 and < 1.67
+  if(NOT Boost_VERSION VERSION_LESS 106200 AND Boost_VERSION VERSION_LESS 106700)
+    set(_Boost_FIBER_COMPILER_FEATURES
+        cxx_alias_templates
+        cxx_auto_type
+        cxx_constexpr
+        cxx_defaulted_functions
+        cxx_final
+        cxx_lambdas
+        cxx_noexcept
+        cxx_nullptr
+        cxx_rvalue_references
+        cxx_thread_local
+        cxx_variadic_templates
+    )
+  endif()
+  string(TOUPPER ${component} uppercomponent)
+  set(${_ret} ${_Boost_${uppercomponent}_COMPILER_FEATURES} PARENT_SCOPE)
+endfunction()
+
+#
+# Update library search directory hint variable with paths used by prebuilt boost binaries.
+#
+# Prebuilt windows binaries (https://sourceforge.net/projects/boost/files/boost-binaries/)
+# have library directories named using MSVC compiler version and architecture.
+# This function would append corresponding directories if MSVC is a current compiler,
+# so having `BOOST_ROOT` would be enough to specify to find everything.
+#
+function(_Boost_UPDATE_WINDOWS_LIBRARY_SEARCH_DIRS_WITH_PREBUILT_PATHS componentlibvar basedir)
+  if("x${CMAKE_CXX_COMPILER_ID}" STREQUAL "xMSVC")
+    if(CMAKE_SIZEOF_VOID_P EQUAL 8)
+      set(_arch_suffix 64)
+    else()
+      set(_arch_suffix 32)
+    endif()
+    if(NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS 19.10)
+      list(APPEND ${componentlibvar} ${basedir}/lib${_arch_suffix}-msvc-14.1)
+      list(APPEND ${componentlibvar} ${basedir}/lib${_arch_suffix}-msvc-14.0)
+    elseif(NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS 19)
+      list(APPEND ${componentlibvar} ${basedir}/lib${_arch_suffix}-msvc-14.0)
+    elseif(NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS 18)
+      list(APPEND ${componentlibvar} ${basedir}/lib${_arch_suffix}-msvc-12.0)
+    elseif(NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS 17)
+      list(APPEND ${componentlibvar} ${basedir}/lib${_arch_suffix}-msvc-11.0)
+    elseif(NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS 16)
+      list(APPEND ${componentlibvar} ${basedir}/lib${_arch_suffix}-msvc-10.0)
+    elseif(NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS 15)
+      list(APPEND ${componentlibvar} ${basedir}/lib${_arch_suffix}-msvc-9.0)
+    elseif(NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS 14)
+      list(APPEND ${componentlibvar} ${basedir}/lib${_arch_suffix}-msvc-8.0)
+    endif()
+    set(${componentlibvar} ${${componentlibvar}} PARENT_SCOPE)
+  endif()
+endfunction()
+
+#
+# End functions/macros
+#
+#-------------------------------------------------------------------------------
+
+#-------------------------------------------------------------------------------
+# main.
+#-------------------------------------------------------------------------------
+
+
+# If the user sets Boost_LIBRARY_DIR, use it as the default for both
+# configurations.
+if(NOT Boost_LIBRARY_DIR_RELEASE AND Boost_LIBRARY_DIR)
+  set(Boost_LIBRARY_DIR_RELEASE "${Boost_LIBRARY_DIR}")
+endif()
+if(NOT Boost_LIBRARY_DIR_DEBUG AND Boost_LIBRARY_DIR)
+  set(Boost_LIBRARY_DIR_DEBUG   "${Boost_LIBRARY_DIR}")
+endif()
+
+if(NOT DEFINED Boost_USE_DEBUG_LIBS)
+  set(Boost_USE_DEBUG_LIBS TRUE)
+endif()
+if(NOT DEFINED Boost_USE_RELEASE_LIBS)
+  set(Boost_USE_RELEASE_LIBS TRUE)
+endif()
+if(NOT DEFINED Boost_USE_MULTITHREADED)
+  set(Boost_USE_MULTITHREADED TRUE)
+endif()
+if(NOT DEFINED Boost_USE_DEBUG_RUNTIME)
+  set(Boost_USE_DEBUG_RUNTIME TRUE)
+endif()
+
+# Check the version of Boost against the requested version.
+if(Boost_FIND_VERSION AND NOT Boost_FIND_VERSION_MINOR)
+  message(SEND_ERROR "When requesting a specific version of Boost, you must provide at least the major and minor version numbers, e.g., 1.34")
+endif()
+
+if(Boost_FIND_VERSION_EXACT)
+  # The version may appear in a directory with or without the patch
+  # level, even when the patch level is non-zero.
+  set(_boost_TEST_VERSIONS
+    "${Boost_FIND_VERSION_MAJOR}.${Boost_FIND_VERSION_MINOR}.${Boost_FIND_VERSION_PATCH}"
+    "${Boost_FIND_VERSION_MAJOR}.${Boost_FIND_VERSION_MINOR}")
+else()
+  # The user has not requested an exact version.  Among known
+  # versions, find those that are acceptable to the user request.
+  #
+  # Note: When adding a new Boost release, also update the dependency
+  # information in _Boost_COMPONENT_DEPENDENCIES and
+  # _Boost_COMPONENT_HEADERS.  See the instructions at the top of
+  # _Boost_COMPONENT_DEPENDENCIES.
+  set(_Boost_KNOWN_VERSIONS ${Boost_ADDITIONAL_VERSIONS}
+    "1.67.0" "1.67" "1.66.0" "1.66" "1.65.1" "1.65.0" "1.65"
+    "1.64.0" "1.64" "1.63.0" "1.63" "1.62.0" "1.62" "1.61.0" "1.61" "1.60.0" "1.60"
+    "1.59.0" "1.59" "1.58.0" "1.58" "1.57.0" "1.57" "1.56.0" "1.56" "1.55.0" "1.55"
+    "1.54.0" "1.54" "1.53.0" "1.53" "1.52.0" "1.52" "1.51.0" "1.51"
+    "1.50.0" "1.50" "1.49.0" "1.49" "1.48.0" "1.48" "1.47.0" "1.47" "1.46.1"
+    "1.46.0" "1.46" "1.45.0" "1.45" "1.44.0" "1.44" "1.43.0" "1.43" "1.42.0" "1.42"
+    "1.41.0" "1.41" "1.40.0" "1.40" "1.39.0" "1.39" "1.38.0" "1.38" "1.37.0" "1.37"
+    "1.36.1" "1.36.0" "1.36" "1.35.1" "1.35.0" "1.35" "1.34.1" "1.34.0"
+    "1.34" "1.33.1" "1.33.0" "1.33")
+
+  set(_boost_TEST_VERSIONS)
+  if(Boost_FIND_VERSION)
+    set(_Boost_FIND_VERSION_SHORT "${Boost_FIND_VERSION_MAJOR}.${Boost_FIND_VERSION_MINOR}")
+    # Select acceptable versions.
+    foreach(version ${_Boost_KNOWN_VERSIONS})
+      if(NOT "${version}" VERSION_LESS "${Boost_FIND_VERSION}")
+        # This version is high enough.
+        list(APPEND _boost_TEST_VERSIONS "${version}")
+      elseif("${version}.99" VERSION_EQUAL "${_Boost_FIND_VERSION_SHORT}.99")
+        # This version is a short-form for the requested version with
+        # the patch level dropped.
+        list(APPEND _boost_TEST_VERSIONS "${version}")
+      endif()
+    endforeach()
+  else()
+    # Any version is acceptable.
+    set(_boost_TEST_VERSIONS "${_Boost_KNOWN_VERSIONS}")
+  endif()
+endif()
+
+# The reason that we failed to find Boost. This will be set to a
+# user-friendly message when we fail to find some necessary piece of
+# Boost.
+set(Boost_ERROR_REASON)
+
+if(Boost_DEBUG)
+  # Output some of their choices
+  message(STATUS "[ ${CMAKE_CURRENT_LIST_FILE}:${CMAKE_CURRENT_LIST_LINE} ] "
+                 "_boost_TEST_VERSIONS = ${_boost_TEST_VERSIONS}")
+  message(STATUS "[ ${CMAKE_CURRENT_LIST_FILE}:${CMAKE_CURRENT_LIST_LINE} ] "
+                 "Boost_USE_MULTITHREADED = ${Boost_USE_MULTITHREADED}")
+  message(STATUS "[ ${CMAKE_CURRENT_LIST_FILE}:${CMAKE_CURRENT_LIST_LINE} ] "
+                 "Boost_USE_STATIC_LIBS = ${Boost_USE_STATIC_LIBS}")
+  message(STATUS "[ ${CMAKE_CURRENT_LIST_FILE}:${CMAKE_CURRENT_LIST_LINE} ] "
+                 "Boost_USE_STATIC_RUNTIME = ${Boost_USE_STATIC_RUNTIME}")
+  message(STATUS "[ ${CMAKE_CURRENT_LIST_FILE}:${CMAKE_CURRENT_LIST_LINE} ] "
+                 "Boost_ADDITIONAL_VERSIONS = ${Boost_ADDITIONAL_VERSIONS}")
+  message(STATUS "[ ${CMAKE_CURRENT_LIST_FILE}:${CMAKE_CURRENT_LIST_LINE} ] "
+                 "Boost_NO_SYSTEM_PATHS = ${Boost_NO_SYSTEM_PATHS}")
+endif()
+
+# Supply Boost_LIB_DIAGNOSTIC_DEFINITIONS as a convenience target. It
+# will only contain any interface definitions on WIN32, but is created
+# on all platforms to keep end user code free from platform dependent
+# code.  Also provide convenience targets to disable autolinking and
+# enable dynamic linking.
+if(NOT TARGET Boost::diagnostic_definitions)
+  add_library(Boost::diagnostic_definitions INTERFACE IMPORTED)
+  add_library(Boost::disable_autolinking INTERFACE IMPORTED)
+  add_library(Boost::dynamic_linking INTERFACE IMPORTED)
+endif()
+if(WIN32)
+  # In windows, automatic linking is performed, so you do not have
+  # to specify the libraries.  If you are linking to a dynamic
+  # runtime, then you can choose to link to either a static or a
+  # dynamic Boost library, the default is to do a static link.  You
+  # can alter this for a specific library "whatever" by defining
+  # BOOST_WHATEVER_DYN_LINK to force Boost library "whatever" to be
+  # linked dynamically.  Alternatively you can force all Boost
+  # libraries to dynamic link by defining BOOST_ALL_DYN_LINK.
+
+  # This feature can be disabled for Boost library "whatever" by
+  # defining BOOST_WHATEVER_NO_LIB, or for all of Boost by defining
+  # BOOST_ALL_NO_LIB.
+
+  # If you want to observe which libraries are being linked against
+  # then defining BOOST_LIB_DIAGNOSTIC will cause the auto-linking
+  # code to emit a #pragma message each time a library is selected
+  # for linking.
+  set(Boost_LIB_DIAGNOSTIC_DEFINITIONS "-DBOOST_LIB_DIAGNOSTIC")
+  set_target_properties(Boost::diagnostic_definitions PROPERTIES
+    INTERFACE_COMPILE_DEFINITIONS "BOOST_LIB_DIAGNOSTIC")
+  set_target_properties(Boost::disable_autolinking PROPERTIES
+    INTERFACE_COMPILE_DEFINITIONS "BOOST_ALL_NO_LIB")
+  set_target_properties(Boost::dynamic_linking PROPERTIES
+    INTERFACE_COMPILE_DEFINITIONS "BOOST_ALL_DYN_LINK")
+endif()
+
+_Boost_CHECK_SPELLING(Boost_ROOT)
+_Boost_CHECK_SPELLING(Boost_LIBRARYDIR)
+_Boost_CHECK_SPELLING(Boost_INCLUDEDIR)
+
+# Collect environment variable inputs as hints.  Do not consider changes.
+foreach(v BOOSTROOT BOOST_ROOT BOOST_INCLUDEDIR BOOST_LIBRARYDIR)
+  set(_env $ENV{${v}})
+  if(_env)
+    file(TO_CMAKE_PATH "${_env}" _ENV_${v})
+  else()
+    set(_ENV_${v} "")
+  endif()
+endforeach()
+if(NOT _ENV_BOOST_ROOT AND _ENV_BOOSTROOT)
+  set(_ENV_BOOST_ROOT "${_ENV_BOOSTROOT}")
+endif()
+
+# Collect inputs and cached results.  Detect changes since the last run.
+if(NOT BOOST_ROOT AND BOOSTROOT)
+  set(BOOST_ROOT "${BOOSTROOT}")
+endif()
+set(_Boost_VARS_DIR
+  BOOST_ROOT
+  Boost_NO_SYSTEM_PATHS
+  )
+
+if(Boost_DEBUG)
+  message(STATUS "[ ${CMAKE_CURRENT_LIST_FILE}:${CMAKE_CURRENT_LIST_LINE} ] "
+                 "Declared as CMake or Environmental Variables:")
+  message(STATUS "[ ${CMAKE_CURRENT_LIST_FILE}:${CMAKE_CURRENT_LIST_LINE} ] "
+                 "  BOOST_ROOT = ${BOOST_ROOT}")
+  message(STATUS "[ ${CMAKE_CURRENT_LIST_FILE}:${CMAKE_CURRENT_LIST_LINE} ] "
+                 "  BOOST_INCLUDEDIR = ${BOOST_INCLUDEDIR}")
+  message(STATUS "[ ${CMAKE_CURRENT_LIST_FILE}:${CMAKE_CURRENT_LIST_LINE} ] "
+                 "  BOOST_LIBRARYDIR = ${BOOST_LIBRARYDIR}")
+  message(STATUS "[ ${CMAKE_CURRENT_LIST_FILE}:${CMAKE_CURRENT_LIST_LINE} ] "
+                 "_boost_TEST_VERSIONS = ${_boost_TEST_VERSIONS}")
+endif()
+
+# ------------------------------------------------------------------------
+#  Search for Boost include DIR
+# ------------------------------------------------------------------------
+
+set(_Boost_VARS_INC BOOST_INCLUDEDIR Boost_INCLUDE_DIR Boost_ADDITIONAL_VERSIONS)
+_Boost_CHANGE_DETECT(_Boost_CHANGE_INCDIR ${_Boost_VARS_DIR} ${_Boost_VARS_INC})
+# Clear Boost_INCLUDE_DIR if it did not change but other input affecting the
+# location did.  We will find a new one based on the new inputs.
+if(_Boost_CHANGE_INCDIR AND NOT _Boost_INCLUDE_DIR_CHANGED)
+  unset(Boost_INCLUDE_DIR CACHE)
+endif()
+
+if(NOT Boost_INCLUDE_DIR)
+  set(_boost_INCLUDE_SEARCH_DIRS "")
+  if(BOOST_INCLUDEDIR)
+    list(APPEND _boost_INCLUDE_SEARCH_DIRS ${BOOST_INCLUDEDIR})
+  elseif(_ENV_BOOST_INCLUDEDIR)
+    list(APPEND _boost_INCLUDE_SEARCH_DIRS ${_ENV_BOOST_INCLUDEDIR})
+  endif()
+
+  if( BOOST_ROOT )
+    list(APPEND _boost_INCLUDE_SEARCH_DIRS ${BOOST_ROOT}/include ${BOOST_ROOT})
+  elseif( _ENV_BOOST_ROOT )
+    list(APPEND _boost_INCLUDE_SEARCH_DIRS ${_ENV_BOOST_ROOT}/include ${_ENV_BOOST_ROOT})
+  endif()
+
+  if( Boost_NO_SYSTEM_PATHS)
+    list(APPEND _boost_INCLUDE_SEARCH_DIRS NO_CMAKE_SYSTEM_PATH NO_SYSTEM_ENVIRONMENT_PATH)
+  else()
+    if("x${CMAKE_CXX_COMPILER_ID}" STREQUAL "xMSVC")
+      foreach(ver ${_Boost_KNOWN_VERSIONS})
+        string(REPLACE "." "_" ver "${ver}")
+        list(APPEND _boost_INCLUDE_SEARCH_DIRS PATHS "C:/local/boost_${ver}")
+      endforeach()
+    endif()
+    list(APPEND _boost_INCLUDE_SEARCH_DIRS PATHS
+      C:/boost/include
+      C:/boost
+      /sw/local/include
+      )
+  endif()
+
+  # Try to find Boost by stepping backwards through the Boost versions
+  # we know about.
+  # Build a list of path suffixes for each version.
+  set(_boost_PATH_SUFFIXES)
+  foreach(_boost_VER ${_boost_TEST_VERSIONS})
+    # Add in a path suffix, based on the required version, ideally
+    # we could read this from version.hpp, but for that to work we'd
+    # need to know the include dir already
+    set(_boost_BOOSTIFIED_VERSION)
+
+    # Transform 1.35 => 1_35 and 1.36.0 => 1_36_0
+    if(_boost_VER MATCHES "([0-9]+)\\.([0-9]+)\\.([0-9]+)")
+        set(_boost_BOOSTIFIED_VERSION
+          "${CMAKE_MATCH_1}_${CMAKE_MATCH_2}_${CMAKE_MATCH_3}")
+    elseif(_boost_VER MATCHES "([0-9]+)\\.([0-9]+)")
+        set(_boost_BOOSTIFIED_VERSION
+          "${CMAKE_MATCH_1}_${CMAKE_MATCH_2}")
+    endif()
+
+    list(APPEND _boost_PATH_SUFFIXES
+      "boost-${_boost_BOOSTIFIED_VERSION}"
+      "boost_${_boost_BOOSTIFIED_VERSION}"
+      "boost/boost-${_boost_BOOSTIFIED_VERSION}"
+      "boost/boost_${_boost_BOOSTIFIED_VERSION}"
+      )
+
+  endforeach()
+
+  if(Boost_DEBUG)
+    message(STATUS "[ ${CMAKE_CURRENT_LIST_FILE}:${CMAKE_CURRENT_LIST_LINE} ] "
+                   "Include debugging info:")
+    message(STATUS "[ ${CMAKE_CURRENT_LIST_FILE}:${CMAKE_CURRENT_LIST_LINE} ] "
+                   "  _boost_INCLUDE_SEARCH_DIRS = ${_boost_INCLUDE_SEARCH_DIRS}")
+    message(STATUS "[ ${CMAKE_CURRENT_LIST_FILE}:${CMAKE_CURRENT_LIST_LINE} ] "
+                   "  _boost_PATH_SUFFIXES = ${_boost_PATH_SUFFIXES}")
+  endif()
+
+  # Look for a standard boost header file.
+  find_path(Boost_INCLUDE_DIR
+    NAMES         boost/config.hpp
+    HINTS         ${_boost_INCLUDE_SEARCH_DIRS}
+    PATH_SUFFIXES ${_boost_PATH_SUFFIXES}
+    )
+endif()
+
+# ------------------------------------------------------------------------
+#  Extract version information from version.hpp
+# ------------------------------------------------------------------------
+
+# Set Boost_FOUND based only on header location and version.
+# It will be updated below for component libraries.
+if(Boost_INCLUDE_DIR)
+  if(Boost_DEBUG)
+    message(STATUS "[ ${CMAKE_CURRENT_LIST_FILE}:${CMAKE_CURRENT_LIST_LINE} ] "
+                   "location of version.hpp: ${Boost_INCLUDE_DIR}/boost/version.hpp")
+  endif()
+
+  # Extract Boost_VERSION and Boost_LIB_VERSION from version.hpp
+  set(Boost_VERSION 0)
+  set(Boost_LIB_VERSION "")
+  file(STRINGS "${Boost_INCLUDE_DIR}/boost/version.hpp" _boost_VERSION_HPP_CONTENTS REGEX "#define BOOST_(LIB_)?VERSION ")
+  set(_Boost_VERSION_REGEX "([0-9]+)")
+  set(_Boost_LIB_VERSION_REGEX "\"([0-9_]+)\"")
+  foreach(v VERSION LIB_VERSION)
+    if("${_boost_VERSION_HPP_CONTENTS}" MATCHES "#define BOOST_${v} ${_Boost_${v}_REGEX}")
+      set(Boost_${v} "${CMAKE_MATCH_1}")
+    endif()
+  endforeach()
+  unset(_boost_VERSION_HPP_CONTENTS)
+
+  math(EXPR Boost_MAJOR_VERSION "${Boost_VERSION} / 100000")
+  math(EXPR Boost_MINOR_VERSION "${Boost_VERSION} / 100 % 1000")
+  math(EXPR Boost_SUBMINOR_VERSION "${Boost_VERSION} % 100")
+
+  string(APPEND Boost_ERROR_REASON
+    "Boost version: ${Boost_MAJOR_VERSION}.${Boost_MINOR_VERSION}.${Boost_SUBMINOR_VERSION}\nBoost include path: ${Boost_INCLUDE_DIR}")
+  if(Boost_DEBUG)
+    message(STATUS "[ ${CMAKE_CURRENT_LIST_FILE}:${CMAKE_CURRENT_LIST_LINE} ] "
+                   "version.hpp reveals boost "
+                   "${Boost_MAJOR_VERSION}.${Boost_MINOR_VERSION}.${Boost_SUBMINOR_VERSION}")
+  endif()
+
+  if(Boost_FIND_VERSION)
+    # Set Boost_FOUND based on requested version.
+    set(_Boost_VERSION "${Boost_MAJOR_VERSION}.${Boost_MINOR_VERSION}.${Boost_SUBMINOR_VERSION}")
+    if("${_Boost_VERSION}" VERSION_LESS "${Boost_FIND_VERSION}")
+      set(Boost_FOUND 0)
+      set(_Boost_VERSION_AGE "old")
+    elseif(Boost_FIND_VERSION_EXACT AND
+        NOT "${_Boost_VERSION}" VERSION_EQUAL "${Boost_FIND_VERSION}")
+      set(Boost_FOUND 0)
+      set(_Boost_VERSION_AGE "new")
+    else()
+      set(Boost_FOUND 1)
+    endif()
+    if(NOT Boost_FOUND)
+      # State that we found a version of Boost that is too new or too old.
+      string(APPEND Boost_ERROR_REASON
+        "\nDetected version of Boost is too ${_Boost_VERSION_AGE}. Requested version was ${Boost_FIND_VERSION_MAJOR}.${Boost_FIND_VERSION_MINOR}")
+      if (Boost_FIND_VERSION_PATCH)
+        string(APPEND Boost_ERROR_REASON
+          ".${Boost_FIND_VERSION_PATCH}")
+      endif ()
+      if (NOT Boost_FIND_VERSION_EXACT)
+        string(APPEND Boost_ERROR_REASON " (or newer)")
+      endif ()
+      string(APPEND Boost_ERROR_REASON ".")
+    endif ()
+  else()
+    # Caller will accept any Boost version.
+    set(Boost_FOUND 1)
+  endif()
+else()
+  set(Boost_FOUND 0)
+  string(APPEND Boost_ERROR_REASON
+    "Unable to find the Boost header files. Please set BOOST_ROOT to the root directory containing Boost or BOOST_INCLUDEDIR to the directory containing Boost's headers.")
+endif()
+
+# ------------------------------------------------------------------------
+#  Prefix initialization
+# ------------------------------------------------------------------------
+
+set(Boost_LIB_PREFIX "")
+if ( (GHSMULTI AND Boost_USE_STATIC_LIBS) OR
+    (WIN32 AND Boost_USE_STATIC_LIBS AND NOT CYGWIN) )
+  set(Boost_LIB_PREFIX "lib")
+endif()
+
+if ( NOT Boost_NAMESPACE )
+  set(Boost_NAMESPACE "boost")
+endif()
+
+# ------------------------------------------------------------------------
+#  Suffix initialization and compiler suffix detection.
+# ------------------------------------------------------------------------
+
+set(_Boost_VARS_NAME
+  Boost_NAMESPACE
+  Boost_COMPILER
+  Boost_THREADAPI
+  Boost_USE_DEBUG_PYTHON
+  Boost_USE_MULTITHREADED
+  Boost_USE_STATIC_LIBS
+  Boost_USE_STATIC_RUNTIME
+  Boost_USE_STLPORT
+  Boost_USE_STLPORT_DEPRECATED_NATIVE_IOSTREAMS
+  )
+_Boost_CHANGE_DETECT(_Boost_CHANGE_LIBNAME ${_Boost_VARS_NAME})
+
+# Setting some more suffixes for the library
+if (Boost_COMPILER)
+  set(_boost_COMPILER ${Boost_COMPILER})
+  if(Boost_DEBUG)
+    message(STATUS "[ ${CMAKE_CURRENT_LIST_FILE}:${CMAKE_CURRENT_LIST_LINE} ] "
+                   "using user-specified Boost_COMPILER = ${_boost_COMPILER}")
+  endif()
+else()
+  # Attempt to guess the compiler suffix
+  # NOTE: this is not perfect yet, if you experience any issues
+  # please report them and use the Boost_COMPILER variable
+  # to work around the problems.
+  _Boost_GUESS_COMPILER_PREFIX(_boost_COMPILER)
+  if(Boost_DEBUG)
+    message(STATUS "[ ${CMAKE_CURRENT_LIST_FILE}:${CMAKE_CURRENT_LIST_LINE} ] "
+      "guessed _boost_COMPILER = ${_boost_COMPILER}")
+  endif()
+endif()
+
+set (_boost_MULTITHREADED "-mt")
+if( NOT Boost_USE_MULTITHREADED )
+  set (_boost_MULTITHREADED "")
+endif()
+if(Boost_DEBUG)
+  message(STATUS "[ ${CMAKE_CURRENT_LIST_FILE}:${CMAKE_CURRENT_LIST_LINE} ] "
+    "_boost_MULTITHREADED = ${_boost_MULTITHREADED}")
+endif()
+
+#======================
+# Systematically build up the Boost ABI tag for the 'tagged' and 'versioned' layouts
+# http://boost.org/doc/libs/1_66_0/more/getting_started/windows.html#library-naming
+# http://boost.org/doc/libs/1_66_0/boost/config/auto_link.hpp
+# http://boost.org/doc/libs/1_66_0/tools/build/src/tools/common.jam
+# http://boost.org/doc/libs/1_66_0/boostcpp.jam
+set( _boost_RELEASE_ABI_TAG "-")
+set( _boost_DEBUG_ABI_TAG   "-")
+# Key       Use this library when:
+#  s        linking statically to the C++ standard library and
+#           compiler runtime support libraries.
+if(Boost_USE_STATIC_RUNTIME)
+  set( _boost_RELEASE_ABI_TAG "${_boost_RELEASE_ABI_TAG}s")
+  set( _boost_DEBUG_ABI_TAG   "${_boost_DEBUG_ABI_TAG}s")
+endif()
+#  g        using debug versions of the standard and runtime
+#           support libraries
+if(WIN32 AND Boost_USE_DEBUG_RUNTIME)
+  if("x${CMAKE_CXX_COMPILER_ID}" STREQUAL "xMSVC"
+          OR "x${CMAKE_CXX_COMPILER_ID}" STREQUAL "xClang"
+          OR "x${CMAKE_CXX_COMPILER_ID}" STREQUAL "xIntel")
+    string(APPEND _boost_DEBUG_ABI_TAG "g")
+  endif()
+endif()
+#  y        using special debug build of python
+if(Boost_USE_DEBUG_PYTHON)
+  string(APPEND _boost_DEBUG_ABI_TAG "y")
+endif()
+#  d        using a debug version of your code
+string(APPEND _boost_DEBUG_ABI_TAG "d")
+#  p        using the STLport standard library rather than the
+#           default one supplied with your compiler
+if(Boost_USE_STLPORT)
+  string(APPEND _boost_RELEASE_ABI_TAG "p")
+  string(APPEND _boost_DEBUG_ABI_TAG "p")
+endif()
+#  n        using the STLport deprecated "native iostreams" feature
+#           removed from the documentation in 1.43.0 but still present in
+#           boost/config/auto_link.hpp
+if(Boost_USE_STLPORT_DEPRECATED_NATIVE_IOSTREAMS)
+  string(APPEND _boost_RELEASE_ABI_TAG "n")
+  string(APPEND _boost_DEBUG_ABI_TAG "n")
+endif()
+
+#  -x86     Architecture and address model tag
+#           First character is the architecture, then word-size, either 32 or 64
+#           Only used in 'versioned' layout, added in Boost 1.66.0
+set(_boost_ARCHITECTURE_TAG "")
+# {CMAKE_CXX_COMPILER_ARCHITECTURE_ID} is not currently set for all compilers
+if(NOT "x${CMAKE_CXX_COMPILER_ARCHITECTURE_ID}" STREQUAL "x" AND NOT Boost_VERSION VERSION_LESS 106600)
+  string(APPEND _boost_ARCHITECTURE_TAG "-")
+  # This needs to be kept in-sync with the section of CMakePlatformId.h.in
+  # inside 'defined(_WIN32) && defined(_MSC_VER)'
+  if(${CMAKE_CXX_COMPILER_ARCHITECTURE_ID} STREQUAL "IA64")
+    string(APPEND _boost_ARCHITECTURE_TAG "i")
+  elseif(${CMAKE_CXX_COMPILER_ARCHITECTURE_ID} STREQUAL "X86"
+            OR ${CMAKE_CXX_COMPILER_ARCHITECTURE_ID} STREQUAL "x64")
+    string(APPEND _boost_ARCHITECTURE_TAG "x")
+  elseif(${CMAKE_CXX_COMPILER_ARCHITECTURE_ID} MATCHES "^ARM")
+    string(APPEND _boost_ARCHITECTURE_TAG "a")
+  elseif(${CMAKE_CXX_COMPILER_ARCHITECTURE_ID} STREQUAL "MIPS")
+    string(APPEND _boost_ARCHITECTURE_TAG "m")
+  endif()
+
+  if(CMAKE_SIZEOF_VOID_P EQUAL 8)
+    string(APPEND _boost_ARCHITECTURE_TAG "64")
+  else()
+    string(APPEND _boost_ARCHITECTURE_TAG "32")
+  endif()
+endif()
+
+if(Boost_DEBUG)
+  message(STATUS "[ ${CMAKE_CURRENT_LIST_FILE}:${CMAKE_CURRENT_LIST_LINE} ] "
+    "_boost_RELEASE_ABI_TAG = ${_boost_RELEASE_ABI_TAG}")
+  message(STATUS "[ ${CMAKE_CURRENT_LIST_FILE}:${CMAKE_CURRENT_LIST_LINE} ] "
+    "_boost_DEBUG_ABI_TAG = ${_boost_DEBUG_ABI_TAG}")
+endif()
+
+# ------------------------------------------------------------------------
+#  Begin finding boost libraries
+# ------------------------------------------------------------------------
+
+set(_Boost_VARS_LIB "")
+foreach(c DEBUG RELEASE)
+  set(_Boost_VARS_LIB_${c} BOOST_LIBRARYDIR Boost_LIBRARY_DIR_${c})
+  list(APPEND _Boost_VARS_LIB ${_Boost_VARS_LIB_${c}})
+  _Boost_CHANGE_DETECT(_Boost_CHANGE_LIBDIR_${c} ${_Boost_VARS_DIR} ${_Boost_VARS_LIB_${c}} Boost_INCLUDE_DIR)
+  # Clear Boost_LIBRARY_DIR_${c} if it did not change but other input affecting the
+  # location did.  We will find a new one based on the new inputs.
+  if(_Boost_CHANGE_LIBDIR_${c} AND NOT _Boost_LIBRARY_DIR_${c}_CHANGED)
+    unset(Boost_LIBRARY_DIR_${c} CACHE)
+  endif()
+
+  # If Boost_LIBRARY_DIR_[RELEASE,DEBUG] is set, prefer its value.
+  if(Boost_LIBRARY_DIR_${c})
+    set(_boost_LIBRARY_SEARCH_DIRS_${c} ${Boost_LIBRARY_DIR_${c}} NO_DEFAULT_PATH NO_CMAKE_FIND_ROOT_PATH)
+  else()
+    set(_boost_LIBRARY_SEARCH_DIRS_${c} "")
+    if(BOOST_LIBRARYDIR)
+      list(APPEND _boost_LIBRARY_SEARCH_DIRS_${c} ${BOOST_LIBRARYDIR})
+    elseif(_ENV_BOOST_LIBRARYDIR)
+      list(APPEND _boost_LIBRARY_SEARCH_DIRS_${c} ${_ENV_BOOST_LIBRARYDIR})
+    endif()
+
+    if(BOOST_ROOT)
+      list(APPEND _boost_LIBRARY_SEARCH_DIRS_${c} ${BOOST_ROOT}/lib ${BOOST_ROOT}/stage/lib)
+      _Boost_UPDATE_WINDOWS_LIBRARY_SEARCH_DIRS_WITH_PREBUILT_PATHS(_boost_LIBRARY_SEARCH_DIRS_${c} "${BOOST_ROOT}")
+    elseif(_ENV_BOOST_ROOT)
+      list(APPEND _boost_LIBRARY_SEARCH_DIRS_${c} ${_ENV_BOOST_ROOT}/lib ${_ENV_BOOST_ROOT}/stage/lib)
+      _Boost_UPDATE_WINDOWS_LIBRARY_SEARCH_DIRS_WITH_PREBUILT_PATHS(_boost_LIBRARY_SEARCH_DIRS_${c} "${_ENV_BOOST_ROOT}")
+    endif()
+
+    list(APPEND _boost_LIBRARY_SEARCH_DIRS_${c}
+      ${Boost_INCLUDE_DIR}/lib
+      ${Boost_INCLUDE_DIR}/../lib
+      ${Boost_INCLUDE_DIR}/stage/lib
+      )
+    _Boost_UPDATE_WINDOWS_LIBRARY_SEARCH_DIRS_WITH_PREBUILT_PATHS(_boost_LIBRARY_SEARCH_DIRS_${c} "${Boost_INCLUDE_DIR}/..")
+    _Boost_UPDATE_WINDOWS_LIBRARY_SEARCH_DIRS_WITH_PREBUILT_PATHS(_boost_LIBRARY_SEARCH_DIRS_${c} "${Boost_INCLUDE_DIR}")
+    if( Boost_NO_SYSTEM_PATHS )
+      list(APPEND _boost_LIBRARY_SEARCH_DIRS_${c} NO_CMAKE_SYSTEM_PATH NO_SYSTEM_ENVIRONMENT_PATH)
+    else()
+      foreach(ver ${_Boost_KNOWN_VERSIONS})
+        string(REPLACE "." "_" ver "${ver}")
+        _Boost_UPDATE_WINDOWS_LIBRARY_SEARCH_DIRS_WITH_PREBUILT_PATHS(_boost_LIBRARY_SEARCH_DIRS_${c} "C:/local/boost_${ver}")
+      endforeach()
+      _Boost_UPDATE_WINDOWS_LIBRARY_SEARCH_DIRS_WITH_PREBUILT_PATHS(_boost_LIBRARY_SEARCH_DIRS_${c} "C:/boost")
+      list(APPEND _boost_LIBRARY_SEARCH_DIRS_${c} PATHS
+        C:/boost/lib
+        C:/boost
+        /sw/local/lib
+        )
+    endif()
+  endif()
+endforeach()
+
+if(Boost_DEBUG)
+  message(STATUS "[ ${CMAKE_CURRENT_LIST_FILE}:${CMAKE_CURRENT_LIST_LINE} ] "
+    "_boost_LIBRARY_SEARCH_DIRS_RELEASE = ${_boost_LIBRARY_SEARCH_DIRS_RELEASE}"
+    "_boost_LIBRARY_SEARCH_DIRS_DEBUG   = ${_boost_LIBRARY_SEARCH_DIRS_DEBUG}")
+endif()
+
+# Support preference of static libs by adjusting CMAKE_FIND_LIBRARY_SUFFIXES
+if( Boost_USE_STATIC_LIBS )
+  set( _boost_ORIG_CMAKE_FIND_LIBRARY_SUFFIXES ${CMAKE_FIND_LIBRARY_SUFFIXES})
+  if(WIN32)
+    list(INSERT CMAKE_FIND_LIBRARY_SUFFIXES 0 .lib .a)
+  else()
+    set(CMAKE_FIND_LIBRARY_SUFFIXES .a)
+  endif()
+endif()
+
+# We want to use the tag inline below without risking double dashes
+if(_boost_RELEASE_ABI_TAG)
+  if(${_boost_RELEASE_ABI_TAG} STREQUAL "-")
+    set(_boost_RELEASE_ABI_TAG "")
+  endif()
+endif()
+if(_boost_DEBUG_ABI_TAG)
+  if(${_boost_DEBUG_ABI_TAG} STREQUAL "-")
+    set(_boost_DEBUG_ABI_TAG "")
+  endif()
+endif()
+
+# The previous behavior of FindBoost when Boost_USE_STATIC_LIBS was enabled
+# on WIN32 was to:
+#  1. Search for static libs compiled against a SHARED C++ standard runtime library (use if found)
+#  2. Search for static libs compiled against a STATIC C++ standard runtime library (use if found)
+# We maintain this behavior since changing it could break people's builds.
+# To disable the ambiguous behavior, the user need only
+# set Boost_USE_STATIC_RUNTIME either ON or OFF.
+set(_boost_STATIC_RUNTIME_WORKAROUND false)
+if(WIN32 AND Boost_USE_STATIC_LIBS)
+  if(NOT DEFINED Boost_USE_STATIC_RUNTIME)
+    set(_boost_STATIC_RUNTIME_WORKAROUND TRUE)
+  endif()
+endif()
+
+# On versions < 1.35, remove the System library from the considered list
+# since it wasn't added until 1.35.
+if(Boost_VERSION AND Boost_FIND_COMPONENTS)
+   if(Boost_VERSION LESS 103500)
+     list(REMOVE_ITEM Boost_FIND_COMPONENTS system)
+   endif()
+endif()
+
+# Additional components may be required via component dependencies.
+# Add any missing components to the list.
+_Boost_MISSING_DEPENDENCIES(Boost_FIND_COMPONENTS _Boost_EXTRA_FIND_COMPONENTS)
+
+# If thread is required, get the thread libs as a dependency
+if("thread" IN_LIST Boost_FIND_COMPONENTS)
+  if(Boost_FIND_QUIETLY)
+    set(_Boost_find_quiet QUIET)
+  else()
+    set(_Boost_find_quiet "")
+  endif()
+  find_package(Threads ${_Boost_find_quiet})
+  unset(_Boost_find_quiet)
+endif()
+
+# If the user changed any of our control inputs flush previous results.
+if(_Boost_CHANGE_LIBDIR_DEBUG OR _Boost_CHANGE_LIBDIR_RELEASE OR _Boost_CHANGE_LIBNAME)
+  foreach(COMPONENT ${_Boost_COMPONENTS_SEARCHED})
+    string(TOUPPER ${COMPONENT} UPPERCOMPONENT)
+    foreach(c DEBUG RELEASE)
+      set(_var Boost_${UPPERCOMPONENT}_LIBRARY_${c})
+      unset(${_var} CACHE)
+      set(${_var} "${_var}-NOTFOUND")
+    endforeach()
+  endforeach()
+  set(_Boost_COMPONENTS_SEARCHED "")
+endif()
+
+foreach(COMPONENT ${Boost_FIND_COMPONENTS})
+  string(TOUPPER ${COMPONENT} UPPERCOMPONENT)
+
+  set( _boost_docstring_release "Boost ${COMPONENT} library (release)")
+  set( _boost_docstring_debug   "Boost ${COMPONENT} library (debug)")
+
+  # Compute component-specific hints.
+  set(_Boost_FIND_LIBRARY_HINTS_FOR_COMPONENT "")
+  if(${COMPONENT} STREQUAL "mpi" OR ${COMPONENT} STREQUAL "mpi_python" OR
+     ${COMPONENT} STREQUAL "graph_parallel")
+    foreach(lib ${MPI_CXX_LIBRARIES} ${MPI_C_LIBRARIES})
+      if(IS_ABSOLUTE "${lib}")
+        get_filename_component(libdir "${lib}" PATH)
+        string(REPLACE "\\" "/" libdir "${libdir}")
+        list(APPEND _Boost_FIND_LIBRARY_HINTS_FOR_COMPONENT ${libdir})
+      endif()
+    endforeach()
+  endif()
+
+  # Handle Python version suffixes
+  unset(COMPONENT_PYTHON_VERSION_MAJOR)
+  unset(COMPONENT_PYTHON_VERSION_MINOR)
+  if(${COMPONENT} MATCHES "^(python|mpi_python|numpy)([0-9])\$")
+    set(COMPONENT_UNVERSIONED "${CMAKE_MATCH_1}")
+    set(COMPONENT_PYTHON_VERSION_MAJOR "${CMAKE_MATCH_2}")
+  elseif(${COMPONENT} MATCHES "^(python|mpi_python|numpy)([0-9])\\.?([0-9])\$")
+    set(COMPONENT_UNVERSIONED "${CMAKE_MATCH_1}")
+    set(COMPONENT_PYTHON_VERSION_MAJOR "${CMAKE_MATCH_2}")
+    set(COMPONENT_PYTHON_VERSION_MINOR "${CMAKE_MATCH_3}")
+  endif()
+
+  unset(_Boost_FIND_LIBRARY_HINTS_FOR_COMPONENT_NAME)
+  if (COMPONENT_PYTHON_VERSION_MINOR)
+    # Boost >= 1.67
+    list(APPEND _Boost_FIND_LIBRARY_HINTS_FOR_COMPONENT_NAME "${COMPONENT_UNVERSIONED}${COMPONENT_PYTHON_VERSION_MAJOR}${COMPONENT_PYTHON_VERSION_MINOR}")
+    # Debian/Ubuntu (Some versions omit the 2 and/or 3 from the suffix)
+    list(APPEND _Boost_FIND_LIBRARY_HINTS_FOR_COMPONENT_NAME "${COMPONENT_UNVERSIONED}${COMPONENT_PYTHON_VERSION_MAJOR}-py${COMPONENT_PYTHON_VERSION_MAJOR}${COMPONENT_PYTHON_VERSION_MINOR}")
+    list(APPEND _Boost_FIND_LIBRARY_HINTS_FOR_COMPONENT_NAME "${COMPONENT_UNVERSIONED}-py${COMPONENT_PYTHON_VERSION_MAJOR}${COMPONENT_PYTHON_VERSION_MINOR}")
+    # Gentoo
+    list(APPEND _Boost_FIND_LIBRARY_HINTS_FOR_COMPONENT_NAME "${COMPONENT_UNVERSIONED}-${COMPONENT_PYTHON_VERSION_MAJOR}${COMPONENT_PYTHON_VERSION_MINOR}")
+    # RPMs
+    list(APPEND _Boost_FIND_LIBRARY_HINTS_FOR_COMPONENT_NAME "${COMPONENT_UNVERSIONED}-${COMPONENT_PYTHON_VERSION_MAJOR}${COMPONENT_PYTHON_VERSION_MINOR}")
+  endif()
+  if (COMPONENT_PYTHON_VERSION_MAJOR AND NOT COMPONENT_PYTHON_VERSION_MINOR)
+    # Boost < 1.67
+    list(APPEND _Boost_FIND_LIBRARY_HINTS_FOR_COMPONENT_NAME "${COMPONENT_UNVERSIONED}${COMPONENT_PYTHON_VERSION_MAJOR}")
+  endif()
+
+  # Consolidate and report component-specific hints.
+  if(_Boost_FIND_LIBRARY_HINTS_FOR_COMPONENT_NAME)
+    list(REMOVE_DUPLICATES _Boost_FIND_LIBRARY_HINTS_FOR_COMPONENT_NAME)
+    if(Boost_DEBUG)
+      message(STATUS "[ ${CMAKE_CURRENT_LIST_FILE}:${CMAKE_CURRENT_LIST_LINE} ] "
+        "Component-specific library search names for ${COMPONENT_NAME}: "
+        "${_Boost_FIND_LIBRARY_HINTS_FOR_COMPONENT_NAME}")
+    endif()
+  endif()
+  if(_Boost_FIND_LIBRARY_HINTS_FOR_COMPONENT)
+    list(REMOVE_DUPLICATES _Boost_FIND_LIBRARY_HINTS_FOR_COMPONENT)
+    if(Boost_DEBUG)
+      message(STATUS "[ ${CMAKE_CURRENT_LIST_FILE}:${CMAKE_CURRENT_LIST_LINE} ] "
+        "Component-specific library search paths for ${COMPONENT}: "
+        "${_Boost_FIND_LIBRARY_HINTS_FOR_COMPONENT}")
+    endif()
+  endif()
+
+  #
+  # Find headers
+  #
+  _Boost_COMPONENT_HEADERS("${COMPONENT}" Boost_${UPPERCOMPONENT}_HEADER_NAME)
+  # Look for a standard boost header file.
+  if(Boost_${UPPERCOMPONENT}_HEADER_NAME)
+    if(EXISTS "${Boost_INCLUDE_DIR}/${Boost_${UPPERCOMPONENT}_HEADER_NAME}")
+      set(Boost_${UPPERCOMPONENT}_HEADER ON)
+    else()
+      set(Boost_${UPPERCOMPONENT}_HEADER OFF)
+    endif()
+  else()
+    set(Boost_${UPPERCOMPONENT}_HEADER ON)
+    message(WARNING "No header defined for ${COMPONENT}; skipping header check")
+  endif()
+
+  #
+  # Find RELEASE libraries
+  #
+  unset(_boost_RELEASE_NAMES)
+  foreach(component IN LISTS _Boost_FIND_LIBRARY_HINTS_FOR_COMPONENT_NAME COMPONENT)
+    foreach(compiler IN LISTS _boost_COMPILER)
+      list(APPEND _boost_RELEASE_NAMES
+        ${Boost_LIB_PREFIX}${Boost_NAMESPACE}_${component}${compiler}${_boost_MULTITHREADED}${_boost_RELEASE_ABI_TAG}${_boost_ARCHITECTURE_TAG}-${Boost_LIB_VERSION}
+        ${Boost_LIB_PREFIX}${Boost_NAMESPACE}_${component}${compiler}${_boost_MULTITHREADED}${_boost_RELEASE_ABI_TAG} )
+    endforeach()
+    list(APPEND _boost_RELEASE_NAMES
+      ${Boost_LIB_PREFIX}${Boost_NAMESPACE}_${component}${_boost_MULTITHREADED}${_boost_RELEASE_ABI_TAG}${_boost_ARCHITECTURE_TAG}-${Boost_LIB_VERSION}
+      ${Boost_LIB_PREFIX}${Boost_NAMESPACE}_${component}${_boost_MULTITHREADED}${_boost_RELEASE_ABI_TAG}
+      ${Boost_LIB_PREFIX}${Boost_NAMESPACE}_${component} )
+    if(_boost_STATIC_RUNTIME_WORKAROUND)
+      set(_boost_RELEASE_STATIC_ABI_TAG "-s${_boost_RELEASE_ABI_TAG}")
+      foreach(compiler IN LISTS _boost_COMPILER)
+        list(APPEND _boost_RELEASE_NAMES
+          ${Boost_LIB_PREFIX}${Boost_NAMESPACE}_${component}${compiler}${_boost_MULTITHREADED}${_boost_RELEASE_STATIC_ABI_TAG}${_boost_ARCHITECTURE_TAG}-${Boost_LIB_VERSION}
+          ${Boost_LIB_PREFIX}${Boost_NAMESPACE}_${component}${compiler}${_boost_MULTITHREADED}${_boost_RELEASE_STATIC_ABI_TAG} )
+      endforeach()
+      list(APPEND _boost_RELEASE_NAMES
+        ${Boost_LIB_PREFIX}${Boost_NAMESPACE}_${component}${_boost_MULTITHREADED}${_boost_RELEASE_STATIC_ABI_TAG}${_boost_ARCHITECTURE_TAG}-${Boost_LIB_VERSION}
+        ${Boost_LIB_PREFIX}${Boost_NAMESPACE}_${component}${_boost_MULTITHREADED}${_boost_RELEASE_STATIC_ABI_TAG} )
+    endif()
+  endforeach()
+  if(Boost_THREADAPI AND ${COMPONENT} STREQUAL "thread")
+    _Boost_PREPEND_LIST_WITH_THREADAPI(_boost_RELEASE_NAMES ${_boost_RELEASE_NAMES})
+  endif()
+  if(Boost_DEBUG)
+    message(STATUS "[ ${CMAKE_CURRENT_LIST_FILE}:${CMAKE_CURRENT_LIST_LINE} ] "
+                   "Searching for ${UPPERCOMPONENT}_LIBRARY_RELEASE: ${_boost_RELEASE_NAMES}")
+  endif()
+
+  # if Boost_LIBRARY_DIR_RELEASE is not defined,
+  # but Boost_LIBRARY_DIR_DEBUG is, look there first for RELEASE libs
+  if(NOT Boost_LIBRARY_DIR_RELEASE AND Boost_LIBRARY_DIR_DEBUG)
+    list(INSERT _boost_LIBRARY_SEARCH_DIRS_RELEASE 0 ${Boost_LIBRARY_DIR_DEBUG})
+  endif()
+
+  # Avoid passing backslashes to _Boost_FIND_LIBRARY due to macro re-parsing.
+  string(REPLACE "\\" "/" _boost_LIBRARY_SEARCH_DIRS_tmp "${_boost_LIBRARY_SEARCH_DIRS_RELEASE}")
+
+  if(Boost_USE_RELEASE_LIBS)
+    _Boost_FIND_LIBRARY(Boost_${UPPERCOMPONENT}_LIBRARY_RELEASE RELEASE
+      NAMES ${_boost_RELEASE_NAMES}
+      HINTS ${_boost_LIBRARY_SEARCH_DIRS_tmp}
+      NAMES_PER_DIR
+      DOC "${_boost_docstring_release}"
+      )
+  endif()
+
+  #
+  # Find DEBUG libraries
+  #
+  unset(_boost_DEBUG_NAMES)
+  foreach(component IN LISTS _Boost_FIND_LIBRARY_HINTS_FOR_COMPONENT_NAME COMPONENT)
+    foreach(compiler IN LISTS _boost_COMPILER)
+      list(APPEND _boost_DEBUG_NAMES
+        ${Boost_LIB_PREFIX}${Boost_NAMESPACE}_${component}${compiler}${_boost_MULTITHREADED}${_boost_DEBUG_ABI_TAG}${_boost_ARCHITECTURE_TAG}-${Boost_LIB_VERSION}
+        ${Boost_LIB_PREFIX}${Boost_NAMESPACE}_${component}${compiler}${_boost_MULTITHREADED}${_boost_DEBUG_ABI_TAG} )
+    endforeach()
+    list(APPEND _boost_DEBUG_NAMES
+      ${Boost_LIB_PREFIX}${Boost_NAMESPACE}_${component}${_boost_MULTITHREADED}${_boost_DEBUG_ABI_TAG}${_boost_ARCHITECTURE_TAG}-${Boost_LIB_VERSION}
+      ${Boost_LIB_PREFIX}${Boost_NAMESPACE}_${component}${_boost_MULTITHREADED}${_boost_DEBUG_ABI_TAG}
+      ${Boost_LIB_PREFIX}${Boost_NAMESPACE}_${component}${_boost_MULTITHREADED}
+      ${Boost_LIB_PREFIX}${Boost_NAMESPACE}_${component} )
+    if(_boost_STATIC_RUNTIME_WORKAROUND)
+      set(_boost_DEBUG_STATIC_ABI_TAG "-s${_boost_DEBUG_ABI_TAG}")
+      foreach(compiler IN LISTS _boost_COMPILER)
+        list(APPEND _boost_DEBUG_NAMES
+          ${Boost_LIB_PREFIX}${Boost_NAMESPACE}_${component}${compiler}${_boost_MULTITHREADED}${_boost_DEBUG_STATIC_ABI_TAG}${_boost_ARCHITECTURE_TAG}-${Boost_LIB_VERSION}
+          ${Boost_LIB_PREFIX}${Boost_NAMESPACE}_${component}${compiler}${_boost_MULTITHREADED}${_boost_DEBUG_STATIC_ABI_TAG} )
+      endforeach()
+      list(APPEND _boost_DEBUG_NAMES
+        ${Boost_LIB_PREFIX}${Boost_NAMESPACE}_${component}${_boost_MULTITHREADED}${_boost_DEBUG_STATIC_ABI_TAG}${_boost_ARCHITECTURE_TAG}-${Boost_LIB_VERSION}
+        ${Boost_LIB_PREFIX}${Boost_NAMESPACE}_${component}${_boost_MULTITHREADED}${_boost_DEBUG_STATIC_ABI_TAG} )
+    endif()
+  endforeach()
+  if(Boost_THREADAPI AND ${COMPONENT} STREQUAL "thread")
+     _Boost_PREPEND_LIST_WITH_THREADAPI(_boost_DEBUG_NAMES ${_boost_DEBUG_NAMES})
+  endif()
+  if(Boost_DEBUG)
+    message(STATUS "[ ${CMAKE_CURRENT_LIST_FILE}:${CMAKE_CURRENT_LIST_LINE} ] "
+                   "Searching for ${UPPERCOMPONENT}_LIBRARY_DEBUG: ${_boost_DEBUG_NAMES}")
+  endif()
+
+  # if Boost_LIBRARY_DIR_DEBUG is not defined,
+  # but Boost_LIBRARY_DIR_RELEASE is, look there first for DEBUG libs
+  if(NOT Boost_LIBRARY_DIR_DEBUG AND Boost_LIBRARY_DIR_RELEASE)
+    list(INSERT _boost_LIBRARY_SEARCH_DIRS_DEBUG 0 ${Boost_LIBRARY_DIR_RELEASE})
+  endif()
+
+  # Avoid passing backslashes to _Boost_FIND_LIBRARY due to macro re-parsing.
+  string(REPLACE "\\" "/" _boost_LIBRARY_SEARCH_DIRS_tmp "${_boost_LIBRARY_SEARCH_DIRS_DEBUG}")
+
+  if(Boost_USE_DEBUG_LIBS)
+    _Boost_FIND_LIBRARY(Boost_${UPPERCOMPONENT}_LIBRARY_DEBUG DEBUG
+      NAMES ${_boost_DEBUG_NAMES}
+      HINTS ${_boost_LIBRARY_SEARCH_DIRS_tmp}
+      NAMES_PER_DIR
+      DOC "${_boost_docstring_debug}"
+      )
+  endif ()
+
+  if(Boost_REALPATH)
+    _Boost_SWAP_WITH_REALPATH(Boost_${UPPERCOMPONENT}_LIBRARY_RELEASE "${_boost_docstring_release}")
+    _Boost_SWAP_WITH_REALPATH(Boost_${UPPERCOMPONENT}_LIBRARY_DEBUG   "${_boost_docstring_debug}"  )
+  endif()
+
+  _Boost_ADJUST_LIB_VARS(${UPPERCOMPONENT})
+
+  # Check if component requires some compiler features
+  _Boost_COMPILER_FEATURES(${COMPONENT} _Boost_${UPPERCOMPONENT}_COMPILER_FEATURES)
+
+endforeach()
+
+# Restore the original find library ordering
+if( Boost_USE_STATIC_LIBS )
+  set(CMAKE_FIND_LIBRARY_SUFFIXES ${_boost_ORIG_CMAKE_FIND_LIBRARY_SUFFIXES})
+endif()
+
+# ------------------------------------------------------------------------
+#  End finding boost libraries
+# ------------------------------------------------------------------------
+
+set(Boost_INCLUDE_DIRS ${Boost_INCLUDE_DIR})
+set(Boost_LIBRARY_DIRS)
+if(Boost_LIBRARY_DIR_RELEASE)
+  list(APPEND Boost_LIBRARY_DIRS ${Boost_LIBRARY_DIR_RELEASE})
+endif()
+if(Boost_LIBRARY_DIR_DEBUG)
+  list(APPEND Boost_LIBRARY_DIRS ${Boost_LIBRARY_DIR_DEBUG})
+endif()
+if(Boost_LIBRARY_DIRS)
+  list(REMOVE_DUPLICATES Boost_LIBRARY_DIRS)
+endif()
+
+# The above setting of Boost_FOUND was based only on the header files.
+# Update it for the requested component libraries.
+if(Boost_FOUND)
+  # The headers were found.  Check for requested component libs.
+  set(_boost_CHECKED_COMPONENT FALSE)
+  set(_Boost_MISSING_COMPONENTS "")
+  foreach(COMPONENT ${Boost_FIND_COMPONENTS})
+    string(TOUPPER ${COMPONENT} UPPERCOMPONENT)
+    set(_boost_CHECKED_COMPONENT TRUE)
+    if(NOT Boost_${UPPERCOMPONENT}_FOUND AND Boost_FIND_REQUIRED_${COMPONENT})
+      list(APPEND _Boost_MISSING_COMPONENTS ${COMPONENT})
+    endif()
+  endforeach()
+  if(_Boost_MISSING_COMPONENTS AND _Boost_EXTRA_FIND_COMPONENTS)
+    # Optional indirect dependencies are not counted as missing.
+    list(REMOVE_ITEM _Boost_MISSING_COMPONENTS ${_Boost_EXTRA_FIND_COMPONENTS})
+  endif()
+
+  if(Boost_DEBUG)
+    message(STATUS "[ ${CMAKE_CURRENT_LIST_FILE}:${CMAKE_CURRENT_LIST_LINE} ] Boost_FOUND = ${Boost_FOUND}")
+  endif()
+
+  if (_Boost_MISSING_COMPONENTS)
+    set(Boost_FOUND 0)
+    # We were unable to find some libraries, so generate a sensible
+    # error message that lists the libraries we were unable to find.
+    string(APPEND Boost_ERROR_REASON
+      "\nCould not find the following")
+    if(Boost_USE_STATIC_LIBS)
+      string(APPEND Boost_ERROR_REASON " static")
+    endif()
+    string(APPEND Boost_ERROR_REASON
+      " Boost libraries:\n")
+    foreach(COMPONENT ${_Boost_MISSING_COMPONENTS})
+      string(TOUPPER ${COMPONENT} UPPERCOMPONENT)
+      string(APPEND Boost_ERROR_REASON
+        "        ${Boost_NAMESPACE}_${COMPONENT}${Boost_ERROR_REASON_${UPPERCOMPONENT}}\n")
+    endforeach()
+
+    list(LENGTH Boost_FIND_COMPONENTS Boost_NUM_COMPONENTS_WANTED)
+    list(LENGTH _Boost_MISSING_COMPONENTS Boost_NUM_MISSING_COMPONENTS)
+    if (${Boost_NUM_COMPONENTS_WANTED} EQUAL ${Boost_NUM_MISSING_COMPONENTS})
+      string(APPEND Boost_ERROR_REASON
+        "No Boost libraries were found. You may need to set BOOST_LIBRARYDIR to the directory containing Boost libraries or BOOST_ROOT to the location of Boost.")
+    else ()
+      string(APPEND Boost_ERROR_REASON
+        "Some (but not all) of the required Boost libraries were found. You may need to install these additional Boost libraries. Alternatively, set BOOST_LIBRARYDIR to the directory containing Boost libraries or BOOST_ROOT to the location of Boost.")
+    endif ()
+  endif ()
+
+  if( NOT Boost_LIBRARY_DIRS AND NOT _boost_CHECKED_COMPONENT )
+    # Compatibility Code for backwards compatibility with CMake
+    # 2.4's FindBoost module.
+
+    # Look for the boost library path.
+    # Note that the user may not have installed any libraries
+    # so it is quite possible the Boost_LIBRARY_DIRS may not exist.
+    set(_boost_LIB_DIR ${Boost_INCLUDE_DIR})
+
+    if("${_boost_LIB_DIR}" MATCHES "boost-[0-9]+")
+      get_filename_component(_boost_LIB_DIR ${_boost_LIB_DIR} PATH)
+    endif()
+
+    if("${_boost_LIB_DIR}" MATCHES "/include$")
+      # Strip off the trailing "/include" in the path.
+      get_filename_component(_boost_LIB_DIR ${_boost_LIB_DIR} PATH)
+    endif()
+
+    if(EXISTS "${_boost_LIB_DIR}/lib")
+      string(APPEND _boost_LIB_DIR /lib)
+    elseif(EXISTS "${_boost_LIB_DIR}/stage/lib")
+      string(APPEND _boost_LIB_DIR "/stage/lib")
+    else()
+      set(_boost_LIB_DIR "")
+    endif()
+
+    if(_boost_LIB_DIR AND EXISTS "${_boost_LIB_DIR}")
+      set(Boost_LIBRARY_DIRS ${_boost_LIB_DIR})
+    endif()
+
+  endif()
+else()
+  # Boost headers were not found so no components were found.
+  foreach(COMPONENT ${Boost_FIND_COMPONENTS})
+    string(TOUPPER ${COMPONENT} UPPERCOMPONENT)
+    set(Boost_${UPPERCOMPONENT}_FOUND 0)
+  endforeach()
+endif()
+
+# ------------------------------------------------------------------------
+#  Add imported targets
+# ------------------------------------------------------------------------
+
+if(Boost_FOUND)
+  # For header-only libraries
+  if(NOT TARGET Boost::boost)
+    add_library(Boost::boost INTERFACE IMPORTED)
+    if(Boost_INCLUDE_DIRS)
+      set_target_properties(Boost::boost PROPERTIES
+        INTERFACE_INCLUDE_DIRECTORIES "${Boost_INCLUDE_DIRS}")
+    endif()
+  endif()
+
+  foreach(COMPONENT ${Boost_FIND_COMPONENTS})
+    if(_Boost_IMPORTED_TARGETS AND NOT TARGET Boost::${COMPONENT})
+      string(TOUPPER ${COMPONENT} UPPERCOMPONENT)
+      if(Boost_${UPPERCOMPONENT}_FOUND)
+        if(Boost_USE_STATIC_LIBS)
+          add_library(Boost::${COMPONENT} STATIC IMPORTED)
+        else()
+          # Even if Boost_USE_STATIC_LIBS is OFF, we might have static
+          # libraries as a result.
+          add_library(Boost::${COMPONENT} UNKNOWN IMPORTED)
+        endif()
+        if(Boost_INCLUDE_DIRS)
+          set_target_properties(Boost::${COMPONENT} PROPERTIES
+            INTERFACE_INCLUDE_DIRECTORIES "${Boost_INCLUDE_DIRS}")
+        endif()
+        if(EXISTS "${Boost_${UPPERCOMPONENT}_LIBRARY}")
+          set_target_properties(Boost::${COMPONENT} PROPERTIES
+            IMPORTED_LINK_INTERFACE_LANGUAGES "CXX"
+            IMPORTED_LOCATION "${Boost_${UPPERCOMPONENT}_LIBRARY}")
+        endif()
+        if(EXISTS "${Boost_${UPPERCOMPONENT}_LIBRARY_RELEASE}")
+          set_property(TARGET Boost::${COMPONENT} APPEND PROPERTY
+            IMPORTED_CONFIGURATIONS RELEASE)
+          set_target_properties(Boost::${COMPONENT} PROPERTIES
+            IMPORTED_LINK_INTERFACE_LANGUAGES_RELEASE "CXX"
+            IMPORTED_LOCATION_RELEASE "${Boost_${UPPERCOMPONENT}_LIBRARY_RELEASE}")
+        endif()
+        if(EXISTS "${Boost_${UPPERCOMPONENT}_LIBRARY_DEBUG}")
+          set_property(TARGET Boost::${COMPONENT} APPEND PROPERTY
+            IMPORTED_CONFIGURATIONS DEBUG)
+          set_target_properties(Boost::${COMPONENT} PROPERTIES
+            IMPORTED_LINK_INTERFACE_LANGUAGES_DEBUG "CXX"
+            IMPORTED_LOCATION_DEBUG "${Boost_${UPPERCOMPONENT}_LIBRARY_DEBUG}")
+        endif()
+        if(_Boost_${UPPERCOMPONENT}_DEPENDENCIES)
+          unset(_Boost_${UPPERCOMPONENT}_TARGET_DEPENDENCIES)
+          foreach(dep ${_Boost_${UPPERCOMPONENT}_DEPENDENCIES})
+            list(APPEND _Boost_${UPPERCOMPONENT}_TARGET_DEPENDENCIES Boost::${dep})
+          endforeach()
+          if(COMPONENT STREQUAL "thread")
+            list(APPEND _Boost_${UPPERCOMPONENT}_TARGET_DEPENDENCIES Threads::Threads)
+          endif()
+          set_target_properties(Boost::${COMPONENT} PROPERTIES
+            INTERFACE_LINK_LIBRARIES "${_Boost_${UPPERCOMPONENT}_TARGET_DEPENDENCIES}")
+        endif()
+        if(_Boost_${UPPERCOMPONENT}_COMPILER_FEATURES)
+          set_target_properties(Boost::${COMPONENT} PROPERTIES
+            INTERFACE_COMPILE_FEATURES "${_Boost_${UPPERCOMPONENT}_COMPILER_FEATURES}")
+        endif()
+      endif()
+    endif()
+  endforeach()
+endif()
+
+# ------------------------------------------------------------------------
+#  Notification to end user about what was found
+# ------------------------------------------------------------------------
+
+set(Boost_LIBRARIES "")
+if(Boost_FOUND)
+  if(NOT Boost_FIND_QUIETLY)
+    message(STATUS "Boost version: ${Boost_MAJOR_VERSION}.${Boost_MINOR_VERSION}.${Boost_SUBMINOR_VERSION}")
+    if(Boost_FIND_COMPONENTS)
+      message(STATUS "Found the following Boost libraries:")
+    endif()
+  endif()
+  foreach( COMPONENT  ${Boost_FIND_COMPONENTS} )
+    string( TOUPPER ${COMPONENT} UPPERCOMPONENT )
+    if( Boost_${UPPERCOMPONENT}_FOUND )
+      if(NOT Boost_FIND_QUIETLY)
+        message (STATUS "  ${COMPONENT}")
+      endif()
+      list(APPEND Boost_LIBRARIES ${Boost_${UPPERCOMPONENT}_LIBRARY})
+    endif()
+  endforeach()
+else()
+  if(Boost_FIND_REQUIRED)
+    message(SEND_ERROR "Unable to find the requested Boost libraries.\n${Boost_ERROR_REASON}")
+  else()
+    if(NOT Boost_FIND_QUIETLY)
+      # we opt not to automatically output Boost_ERROR_REASON here as
+      # it could be quite lengthy and somewhat imposing in its requests
+      # Since Boost is not always a required dependency we'll leave this
+      # up to the end-user.
+      if(Boost_DEBUG OR Boost_DETAILED_FAILURE_MSG)
+        message(STATUS "Could NOT find Boost\n${Boost_ERROR_REASON}")
+      else()
+        message(STATUS "Could NOT find Boost")
+      endif()
+    endif()
+  endif()
+endif()
+
+# Configure display of cache entries in GUI.
+foreach(v BOOSTROOT BOOST_ROOT ${_Boost_VARS_INC} ${_Boost_VARS_LIB})
+  get_property(_type CACHE ${v} PROPERTY TYPE)
+  if(_type)
+    set_property(CACHE ${v} PROPERTY ADVANCED 1)
+    if("x${_type}" STREQUAL "xUNINITIALIZED")
+      if("x${v}" STREQUAL "xBoost_ADDITIONAL_VERSIONS")
+        set_property(CACHE ${v} PROPERTY TYPE STRING)
+      else()
+        set_property(CACHE ${v} PROPERTY TYPE PATH)
+      endif()
+    endif()
+  endif()
+endforeach()
+
+# Record last used values of input variables so we can
+# detect on the next run if the user changed them.
+foreach(v
+    ${_Boost_VARS_INC} ${_Boost_VARS_LIB}
+    ${_Boost_VARS_DIR} ${_Boost_VARS_NAME}
+    )
+  if(DEFINED ${v})
+    set(_${v}_LAST "${${v}}" CACHE INTERNAL "Last used ${v} value.")
+  else()
+    unset(_${v}_LAST CACHE)
+  endif()
+endforeach()
+
+# Maintain a persistent list of components requested anywhere since
+# the last flush.
+set(_Boost_COMPONENTS_SEARCHED "${_Boost_COMPONENTS_SEARCHED}")
+list(APPEND _Boost_COMPONENTS_SEARCHED ${Boost_FIND_COMPONENTS})
+list(REMOVE_DUPLICATES _Boost_COMPONENTS_SEARCHED)
+list(SORT _Boost_COMPONENTS_SEARCHED)
+set(_Boost_COMPONENTS_SEARCHED "${_Boost_COMPONENTS_SEARCHED}"
+  CACHE INTERNAL "Components requested for this build tree.")
+
+# Restore project's policies
+cmake_policy(POP)