FindBoost.cmake 74.3 KB
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#.rst:
# FindBoost
# ---------
#
# Find Boost include dirs and libraries
#
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# Use this module by invoking find_package with the form::
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#
#   find_package(Boost
#     [version] [EXACT]      # Minimum or EXACT version e.g. 1.36.0
#     [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"
#
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# 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
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# case results are reported in variables::
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#
#   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
#
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# This module reads hints about search locations from variables::
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#
#   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)
#
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# and saves search results persistently in CMake cache entries::
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#
#   Boost_INCLUDE_DIR         - Directory containing Boost headers
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#   Boost_LIBRARY_DIR_RELEASE - Directory containing release Boost libraries
#   Boost_LIBRARY_DIR_DEBUG   - Directory containing debug Boost libraries
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#   Boost_<C>_LIBRARY_DEBUG   - Component <C> library debug variant
#   Boost_<C>_LIBRARY_RELEASE - Component <C> library release variant
#
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# 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 Thread::Thread 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.
#
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# 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
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# library directories in Boost_LIBRARY_DIR_DEBUG and
# Boost_LIBRARY_DIR_RELEASE and individual library
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# 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
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# setting variables::
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#
#   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.
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#   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.
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#   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.
#   Boost_THREADAPI          - Suffix for "thread" component library name,
#                              such as "pthread" or "win32".  Names with
#                              and without this suffix will both be tried.
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#   Boost_NAMESPACE          - Alternate namespace used to build boost with
#                              e.g. if set to "myboost", will search for
#                              myboost_thread instead of boost_thread.
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#
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# Other variables one may set to control this module are::
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#
#   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.1.42.0" instead of
#                              "/usr/lib/libboost_system.so".  This does not
#                              affect linking and should not be enabled unless
#                              the user needs this information.
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#   Boost_LIBRARY_DIR        - Default value for Boost_LIBRARY_DIR_RELEASE and
#                              Boost_LIBRARY_DIR_DEBUG.
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#
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# On Visual Studio and Borland compilers Boost headers request automatic
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# 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
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# libraries with a few exceptions (such as Boost.Python).  Use::
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#
#   add_definitions(${Boost_LIB_DIAGNOSTIC_DEFINITIONS})
#
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# to ask Boost to report information about automatic linking requests.
#
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# Example to find Boost headers only::
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#
#   find_package(Boost 1.36.0)
#   if(Boost_FOUND)
#     include_directories(${Boost_INCLUDE_DIRS})
#     add_executable(foo foo.cc)
#   endif()
#
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# 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)
#
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# Example to find Boost headers and some *static* libraries::
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#
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#   set(Boost_USE_STATIC_LIBS        ON) # only find static libs
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#   set(Boost_USE_MULTITHREADED      ON)
#   set(Boost_USE_STATIC_RUNTIME    OFF)
#   find_package(Boost 1.36.0 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()
#
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# Boost CMake
# ^^^^^^^^^^^
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#
# If Boost was built using the boost-cmake project it provides a package
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# 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.
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#
# Set Boost_NO_BOOST_CMAKE to ON to disable the search for boost-cmake.
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#=============================================================================
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# Copyright 2006-2012 Kitware, Inc.
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# Copyright 2006-2008 Andreas Schneider <mail@cynapses.org>
# Copyright 2007      Wengo
# Copyright 2007      Mike Jackson
# Copyright 2008      Andreas Pakulat <apaku@gmx.de>
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# Copyright 2008-2012 Philip Lowman <philip@yhbt.com>
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#
# Distributed under the OSI-approved BSD License (the "License");
# see accompanying file Copyright.txt for details.
#
# This software is distributed WITHOUT ANY WARRANTY; without even the
# implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
# See the License for more information.
#=============================================================================
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# (To distribute this file outside of CMake, substitute the full
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#  License text for the above reference.)
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#-------------------------------------------------------------------------------
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# Before we go searching, check whether boost-cmake is available, unless the
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# 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)
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  mark_as_advanced(Boost_DIR)
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  # 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("Boost ${Boost_FIND_VERSION} found.")
    if (Boost_FIND_COMPONENTS)
      message("Found Boost components:")
      message("   ${Boost_FIND_COMPONENTS}")
    endif()
    return()
  endif()
endif()


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#-------------------------------------------------------------------------------
#  FindBoost functions & macros
#
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############################################
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#
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# Check the existence of the libraries.
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#
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############################################
# 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
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# And ELSE/ENDIF pairs were removed for readability.
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#########################################################################
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macro(_Boost_ADJUST_LIB_VARS basename)
  if(Boost_INCLUDE_DIR )
    if(Boost_${basename}_LIBRARY_DEBUG AND Boost_${basename}_LIBRARY_RELEASE)
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      # if the generator supports configuration types then set
      # optimized and debug libraries, or if the CMAKE_BUILD_TYPE has a value
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      if(CMAKE_CONFIGURATION_TYPES OR CMAKE_BUILD_TYPE)
        set(Boost_${basename}_LIBRARY optimized ${Boost_${basename}_LIBRARY_RELEASE} debug ${Boost_${basename}_LIBRARY_DEBUG})
      else()
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        # if there are no configuration types and CMAKE_BUILD_TYPE has no value
        # then just use the release libraries
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        set(Boost_${basename}_LIBRARY ${Boost_${basename}_LIBRARY_RELEASE} )
      endif()
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      # FIXME: This probably should be set for both cases
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      set(Boost_${basename}_LIBRARIES optimized ${Boost_${basename}_LIBRARY_RELEASE} debug ${Boost_${basename}_LIBRARY_DEBUG})
    endif()
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    # if only the release version was found, set the debug variable also to the release version
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    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()
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    # if only the debug version was found, set the release variable also to the debug version
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    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()
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    # 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()
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    if(Boost_${basename}_LIBRARY)
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      set(Boost_${basename}_FOUND ON)
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    endif()
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  endif()
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  # Make variables changeable to the advanced user
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  mark_as_advanced(
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      Boost_${basename}_LIBRARY_RELEASE
      Boost_${basename}_LIBRARY_DEBUG
  )
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endmacro()
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# 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 ${changed_var}
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macro(_Boost_CHANGE_DETECT changed_var)
  set(${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()

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#
# 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)

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  find_library(${var} ${ARGN})

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  if(${var})
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    # If this is the first library found then save Boost_LIBRARY_DIR_[RELEASE,DEBUG].
    if(NOT Boost_LIBRARY_DIR_${build_type})
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      get_filename_component(_dir "${${var}}" PATH)
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      set(Boost_LIBRARY_DIR_${build_type} "${_dir}" CACHE PATH "Boost library directory ${build_type}" FORCE)
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    endif()
  elseif(_Boost_FIND_LIBRARY_HINTS_FOR_COMPONENT)
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    # Try component-specific hints but do not save Boost_LIBRARY_DIR_[RELEASE,DEBUG].
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    find_library(${var} HINTS ${_Boost_FIND_LIBRARY_HINTS_FOR_COMPONENT} ${ARGN})
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  endif()

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  # 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()
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  endif()
endmacro()

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#-------------------------------------------------------------------------------

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#
# Runs compiler with "-dumpversion" and parses major/minor
# version with a regex.
#
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function(_Boost_COMPILER_DUMPVERSION _OUTPUT_VERSION)
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  exec_program(${CMAKE_CXX_COMPILER}
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    ARGS ${CMAKE_CXX_COMPILER_ARG1} -dumpversion
    OUTPUT_VARIABLE _boost_COMPILER_VERSION
  )
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  string(REGEX REPLACE "([0-9])\\.([0-9])(\\.[0-9])?" "\\1\\2"
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    _boost_COMPILER_VERSION ${_boost_COMPILER_VERSION})

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  set(${_OUTPUT_VERSION} ${_boost_COMPILER_VERSION} PARENT_SCOPE)
endfunction()
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#
# Take a list of libraries with "thread" in it
# and prepend duplicates with "thread_${Boost_THREADAPI}"
# at the front of the list
#
function(_Boost_PREPEND_LIST_WITH_THREADAPI _output)
  set(_orig_libnames ${ARGN})
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  string(REPLACE "thread" "thread_${Boost_THREADAPI}" _threadapi_libnames "${_orig_libnames}")
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  set(${_output} ${_threadapi_libnames} ${_orig_libnames} PARENT_SCOPE)
endfunction()

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#
# 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()

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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()

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# 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)
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  if(CMAKE_CXX_COMPILER_ID STREQUAL "Intel"
      OR CMAKE_CXX_COMPILER MATCHES "icl"
      OR CMAKE_CXX_COMPILER MATCHES "icpc")
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    if(WIN32)
      set (_boost_COMPILER "-iw")
    else()
      set (_boost_COMPILER "-il")
    endif()
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  elseif (GHSMULTI)
    set(_boost_COMPILER "-ghs")
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  elseif (MSVC14)
    set(_boost_COMPILER "-vc140")
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  elseif (MSVC12)
    set(_boost_COMPILER "-vc120")
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  elseif (MSVC11)
    set(_boost_COMPILER "-vc110")
  elseif (MSVC10)
    set(_boost_COMPILER "-vc100")
  elseif (MSVC90)
    set(_boost_COMPILER "-vc90")
  elseif (MSVC80)
    set(_boost_COMPILER "-vc80")
  elseif (MSVC71)
    set(_boost_COMPILER "-vc71")
  elseif (MSVC70) # Good luck!
    set(_boost_COMPILER "-vc7") # yes, this is correct
  elseif (MSVC60) # Good luck!
    set(_boost_COMPILER "-vc6") # yes, this is correct
  elseif (BORLAND)
    set(_boost_COMPILER "-bcb")
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  elseif(CMAKE_CXX_COMPILER_ID STREQUAL "SunPro")
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    set(_boost_COMPILER "-sw")
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  elseif(CMAKE_CXX_COMPILER_ID STREQUAL "XL")
    set(_boost_COMPILER "-xlc")
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  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${_boost_COMPILER_VERSION}")
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            else()
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              # In Boost <= 1.35.0, there is no mangled compiler name for
              # the Mac OS X/Darwin version of GCC.
              set(_boost_COMPILER "")
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            endif()
          else()
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            # We don't know the Boost version, so assume it's
            # pre-1.36.0.
            set(_boost_COMPILER "")
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          endif()
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        else()
          set(_boost_COMPILER "-gcc${_boost_COMPILER_VERSION}")
        endif()
      endif()
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    endif ()
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  else()
    # TODO at least Boost_DEBUG here?
    set(_boost_COMPILER "")
  endif()
  set(${_ret} ${_boost_COMPILER} PARENT_SCOPE)
endfunction()

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#
# 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.
  #
  # 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.
  set(_Boost_IMPORTED_TARGETS TRUE)
  if(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 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 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 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 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 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 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 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 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 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 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 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 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 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 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)
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  elseif(NOT Boost_VERSION VERSION_LESS 106000 AND Boost_VERSION VERSION_LESS 106200)
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    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 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)
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  else()
    message(WARNING "Imported targets not available for Boost version ${Boost_VERSION}")
    set(_Boost_IMPORTED_TARGETS FALSE)
  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()

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#
# 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
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# extravar - the indirect dependency list variable name
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#
#
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function(_Boost_MISSING_DEPENDENCIES componentvar extravar)
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  # _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})
        list(FIND _boost_processed_components "${componentdep}" _boost_component_found)
        list(FIND _boost_new_components "${componentdep}" _boost_component_new)
        if (_boost_component_found EQUAL -1 AND _boost_component_new EQUAL -1)
          list(APPEND _boost_new_components ${componentdep})
        endif()
      endforeach()
    endforeach()
    set(_boost_unprocessed_components ${_boost_new_components})
    unset(_boost_new_components)
  endwhile()
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  set(_boost_extra_components ${_boost_processed_components})
  if(_boost_extra_components AND ${componentvar})
    list(REMOVE_ITEM _boost_extra_components ${${componentvar}})
  endif()
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  set(${componentvar} ${_boost_processed_components} PARENT_SCOPE)
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  set(${extravar} ${_boost_extra_components} PARENT_SCOPE)
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endfunction()

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#
# End functions/macros
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#
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#-------------------------------------------------------------------------------

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#-------------------------------------------------------------------------------
# main.
#-------------------------------------------------------------------------------
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# 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()

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if(NOT DEFINED Boost_USE_MULTITHREADED)
    set(Boost_USE_MULTITHREADED TRUE)
endif()
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if(NOT DEFINED Boost_USE_DEBUG_RUNTIME)
  set(Boost_USE_DEBUG_RUNTIME TRUE)
endif()
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# 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()

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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}")
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else()
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  # The user has not requested an exact version.  Among known
  # versions, find those that are acceptable to the user request.
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  #
  # Note: When adding a new Boost release, also update the dependency
  # information in _Boost_COMPONENT_DEPENDENCIES.  See the
  # instructions at the top of _Boost_COMPONENT_DEPENDENCIES.
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  set(_Boost_KNOWN_VERSIONS ${Boost_ADDITIONAL_VERSIONS}
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    "1.61.0" "1.61" "1.60.0" "1.60"
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    "1.59.0" "1.59" "1.58.0" "1.58" "1.57.0" "1.57" "1.56.0" "1.56" "1.55.0" "1.55"
    "1.54.0" "1.54" "1.53.0" "1.53" "1.52.0" "1.52" "1.51.0" "1.51"
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    "1.50.0" "1.50" "1.49.0" "1.49" "1.48.0" "1.48" "1.47.0" "1.47" "1.46.1"
Philip Lowman's avatar
Philip Lowman committed
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    "1.46.0" "1.46" "1.45.0" "1.45" "1.44.0" "1.44" "1.43.0" "1.43" "1.42.0" "1.42"
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    "1.41.0" "1.41" "1.40.0" "1.40" "1.39.0" "1.39" "1.38.0" "1.38" "1.37.0" "1.37"
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    "1.36.1" "1.36.0" "1.36" "1.35.1" "1.35.0" "1.35" "1.34.1" "1.34.0"
    "1.34" "1.33.1" "1.33.0" "1.33")
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  set(_boost_TEST_VERSIONS)
  if(Boost_FIND_VERSION)
    set(_Boost_FIND_VERSION_SHORT "${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 "${version}")
      endif()
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    endforeach()
  else()
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    # Any version is acceptable.
    set(_boost_TEST_VERSIONS "${_Boost_KNOWN_VERSIONS}")
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  endif()
endif()
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# 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)

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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()
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# 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()
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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.
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  set(Boost_LIB_DIAGNOSTIC_DEFINITIONS "-DBOOST_LIB_DIAGNOSTIC")
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  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")
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endif()
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_Boost_CHECK_SPELLING(Boost_ROOT)
_Boost_CHECK_SPELLING(Boost_LIBRARYDIR)
_Boost_CHECK_SPELLING(Boost_INCLUDEDIR)

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# 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}")
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endif()
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# Collect inputs and cached results.  Detect changes since the last run.
if(NOT BOOST_ROOT AND BOOSTROOT)
  set(BOOST_ROOT "${BOOSTROOT}")
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endif()
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set(_Boost_VARS_DIR
  BOOST_ROOT
  Boost_NO_SYSTEM_PATHS
  )
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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()
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# ------------------------------------------------------------------------
#  Search for Boost include DIR
# ------------------------------------------------------------------------
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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)
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endif()

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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()
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  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)
  else()
    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.
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  # 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
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    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}")
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    endif()

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    list(APPEND _boost_PATH_SUFFIXES
      "boost-${_boost_BOOSTIFIED_VERSION}"
      "boost_${_boost_BOOSTIFIED_VERSION}"
      "boost/boost-${_boost_BOOSTIFIED_VERSION}"
      "boost/boost_${_boost_BOOSTIFIED_VERSION}"
      )
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  endforeach()
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  if(Boost_DEBUG)
    message(STATUS "[ ${CMAKE_CURRENT_LIST_FILE}:${CMAKE_CURRENT_LIST_LINE} ] "
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                   "Include debugging info:")
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    message(STATUS "[ ${CMAKE_CURRENT_LIST_FILE}:${CMAKE_CURRENT_LIST_LINE} ] "
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                   "  _boost_INCLUDE_SEARCH_DIRS = ${_boost_INCLUDE_SEARCH_DIRS}")
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    message(STATUS "[ ${CMAKE_CURRENT_LIST_FILE}:${CMAKE_CURRENT_LIST_LINE} ] "
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                   "  _boost_PATH_SUFFIXES = ${_boost_PATH_SUFFIXES}")
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  endif()

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  # 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()
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# ------------------------------------------------------------------------
#  Extract version information from version.hpp
# ------------------------------------------------------------------------

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# Set Boost_FOUND based only on header location and version.
# It will be updated below for component libraries.
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if(Boost_INCLUDE_DIR)
  if(Boost_DEBUG)
    message(STATUS "[ ${CMAKE_CURRENT_LIST_FILE}:${CMAKE_CURRENT_LIST_LINE} ] "
                   "location of version.hpp: ${Boost_INCLUDE_DIR}/boost/version.hpp")
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  endif()
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  # Extract Boost_VERSION and Boost_LIB_VERSION from version.hpp
  set(Boost_VERSION 0)
  set(Boost_LIB_VERSION "")
  file(STRINGS "${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)
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    if("${_boost_VERSION_HPP_CONTENTS}" MATCHES "#define BOOST_${v} ${_Boost_${v}_REGEX}")
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      set(Boost_${v} "${CMAKE_MATCH_1}")
    endif()
  endforeach()
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  unset(_boost_VERSION_HPP_CONTENTS)
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  math(EXPR Boost_MAJOR_VERSION "${Boost_VERSION} / 100000")
  math(EXPR Boost_MINOR_VERSION "${Boost_VERSION} / 100 % 1000")
  math(EXPR Boost_SUBMINOR_VERSION "${Boost_VERSION} % 100")
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  set(Boost_ERROR_REASON
    "${Boost_ERROR_REASON}Boost version: ${Boost_MAJOR_VERSION}.${Boost_MINOR_VERSION}.${Boost_SUBMINOR_VERSION}\nBoost include path: ${Boost_INCLUDE_DIR}")
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  if(Boost_DEBUG)
    message(STATUS "[ ${CMAKE_CURRENT_LIST_FILE}:${CMAKE_CURRENT_LIST_LINE} ] "
                   "version.hpp reveals boost "
                   "${Boost_MAJOR_VERSION}.${Boost_MINOR_VERSION}.${Boost_SUBMINOR_VERSION}")
  endif()
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  if(Boost_FIND_VERSION)
    # Set Boost_FOUND based on requested version.
    set(_Boost_VERSION "${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.
      set(Boost_ERROR_REASON
        "${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)
        set(Boost_ERROR_REASON
          "${Boost_ERROR_REASON}.${Boost_FIND_VERSION_PATCH}")
      endif ()
      if (NOT Boost_FIND_VERSION_EXACT)
        set(Boost_ERROR_REASON "${Boost_ERROR_REASON} (or newer)")
      endif ()
      set(Boost_ERROR_REASON "${Boost_ERROR_REASON}.")
    endif ()
  else()
    # Caller will accept any Boost version.
    set(Boost_FOUND 1)
  endif()
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else()
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  set(Boost_FOUND 0)
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  set(Boost_ERROR_REASON
    "${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()
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# ------------------------------------------------------------------------
#  Prefix initialization
# ------------------------------------------------------------------------

set(Boost_LIB_PREFIX "")
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if ( (GHSMULTI AND Boost_USE_STATIC_LIBS) OR
    (WIN32 AND Boost_USE_STATIC_LIBS AND NOT CYGWIN) )
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  set(Boost_LIB_PREFIX "lib")
endif()

if ( NOT Boost_NAMESPACE )
  set(Boost_NAMESPACE "boost")
endif()

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# ------------------------------------------------------------------------
#  Suffix initialization and compiler suffix detection.
# ------------------------------------------------------------------------
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set(_Boost_VARS_NAME
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  Boost_NAMESPACE
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  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})

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# 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}")
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  endif()
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endif()
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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 = ${_boost_MULTITHREADED}")
endif()
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#======================
# Systematically build up the Boost ABI tag
# http://boost.org/doc/libs/1_41_0/more/getting_started/windows.html#library-naming
set( _boost_RELEASE_ABI_TAG "-")
set( _boost_DEBUG_ABI_TAG   "-")
# Key       Use this library when:
#  s        linking statically to the C++ standard library and
#           compiler runtime support libraries.
if(Boost_USE_STATIC_RUNTIME)
  set( _boost_RELEASE_ABI_TAG "${_boost_RELEASE_ABI_TAG}s")
  set( _boost_DEBUG_ABI_TAG   "${_boost_DEBUG_ABI_TAG}s")
endif()
#  g        using debug versions of the standard and runtime
#           support libraries
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if(WIN32 AND Boost_USE_DEBUG_RUNTIME)
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  if(MSVC OR "${CMAKE_CXX_COMPILER}" MATCHES "icl"
          OR "${CMAKE_CXX_COMPILER}" MATCHES "icpc")
    set(_boost_DEBUG_ABI_TAG "${_boost_DEBUG_ABI_TAG}g")
  endif()
endif()
#  y        using special debug build of python
if(Boost_USE_DEBUG_PYTHON)
  set(_boost_DEBUG_ABI_TAG "${_boost_DEBUG_ABI_TAG}y")
endif()
#  d        using a debug version of your code
set(_boost_DEBUG_ABI_TAG "${_boost_DEBUG_ABI_TAG}d")
#  p        using the STLport standard library rather than the
#           default one supplied with your compiler
if(Boost_USE_STLPORT)
  set( _boost_RELEASE_ABI_TAG "${_boost_RELEASE_ABI_TAG}p")
  set( _boost_DEBUG_ABI_TAG   "${_boost_DEBUG_ABI_TAG}p")
endif()
#  n        using the STLport deprecated "native iostreams" feature
if(Boost_USE_STLPORT_DEPRECATED_NATIVE_IOSTREAMS)
  set( _boost_RELEASE_ABI_TAG "${_boost_RELEASE_ABI_TAG}n")
  set( _boost_DEBUG_ABI_TAG   "${_boost_DEBUG_ABI_TAG}n")
endif()
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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 = ${_boost_DEBUG_ABI_TAG}")
endif()
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# ------------------------------------------------------------------------
#  Begin finding boost libraries
# ------------------------------------------------------------------------
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set(_Boost_VARS_LIB "")
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foreach(c DEBUG RELEASE)
  set(_Boost_VARS_LIB_${c} BOOST_LIBRARYDIR Boost_LIBRARY_DIR_${c})
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  list(APPEND _Boost_VARS_LIB ${_Boost_VARS_LIB_${c}})
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  _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)
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  endif()
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  # 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)
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  else()
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    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 ${BOOST_ROOT}/stage/lib)
    elseif(_ENV_BOOST_ROOT)
      list(APPEND _boost_LIBRARY_SEARCH_DIRS_${c} ${_ENV_BOOST_ROOT}/lib ${_ENV_BOOST_ROOT}/stage/lib)
    endif()

    list(APPEND _boost_LIBRARY_SEARCH_DIRS_${c}
      ${Boost_INCLUDE_DIR}/lib
      ${Boost_INCLUDE_DIR}/../lib
      ${Boost_INCLUDE_DIR}/stage/lib
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      )
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    if( Boost_NO_SYSTEM_PATHS )
      list(APPEND _boost_LIBRARY_SEARCH_DIRS_${c} NO_CMAKE_SYSTEM_PATH)
    else()
      list(APPEND _boost_LIBRARY_SEARCH_DIRS_${c} PATHS
        C:/boost/lib
        C:/boost
        /sw/local/lib
        )
    endif()
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  endif()
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endforeach()
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if(Boost_DEBUG)
  message(STATUS "[ ${CMAKE_CURRENT_LIST_FILE}:${CMAKE_CURRENT_LIST_LINE} ] "
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    "_boost_LIBRARY_SEARCH_DIRS_RELEASE = ${_boost_LIBRARY_SEARCH_DIRS_RELEASE}"
    "_boost_LIBRARY_SEARCH_DIRS_DEBUG   = ${_boost_LIBRARY_SEARCH_DIRS_DEBUG}")
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endif()
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# 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)
    set(CMAKE_FIND_LIBRARY_SUFFIXES .lib .a ${CMAKE_FIND_LIBRARY_SUFFIXES})
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  else()
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    set(CMAKE_FIND_LIBRARY_SUFFIXES .a )
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  endif()
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endif()
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# We want to use the tag inline below without risking double dashes
if(_boost_RELEASE_ABI_TAG)
  if(${_boost_RELEASE_ABI_TAG} STREQUAL "-")
    set(_boost_RELEASE_ABI_TAG "")
Philip Lowman's avatar
Philip Lowman committed
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  endif()
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endif()
if(_boost_DEBUG_ABI_TAG)
  if(${_boost_DEBUG_ABI_TAG} STREQUAL "-")
    set(_boost_DEBUG_ABI_TAG "")
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  endif()
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endif()
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# 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)
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  endif()
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endif()
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# 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()
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# Additional components may be required via component dependencies.
# Add any missing components to the list.
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_Boost_MISSING_DEPENDENCIES(Boost_FIND_COMPONENTS _Boost_EXTRA_FIND_COMPONENTS)
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# If thread is required, get the thread libs as a dependency
list(FIND Boost_FIND_COMPONENTS thread _Boost_THREAD_DEPENDENCY_LIBS)
if(NOT _Boost_THREAD_DEPENDENCY_LIBS EQUAL -1)
  include(CMakeFindDependencyMacro)
  find_dependency(Threads)
endif()

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# If the user changed any of our control inputs flush previous results.
if(_Boost_CHANGE_LIBDIR 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()

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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)")

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  # Compute component-specific hints.
  set(_Boost_FIND_LIBRARY_HINTS_FOR_COMPONENT "")
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  if(${COMPONENT} STREQUAL "mpi" OR ${COMPONENT} STREQUAL "mpi_python" OR
     ${COMPONENT} STREQUAL "graph_parallel")
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    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()

  # Consolidate and report component-specific hints.
  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()

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  #
  # Find RELEASE libraries
  #
  set(_boost_RELEASE_NAMES
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    ${Boost_LIB_PREFIX}${Boost_NAMESPACE}_${COMPONENT}${_boost_COMPILER}${_boost_MULTITHREADED}${_boost_RELEASE_ABI_TAG}-${Boost_LIB_VERSION}
    ${Boost_LIB_PREFIX}${Boost_NAMESPACE}_${COMPONENT}${_boost_COMPILER}${_boost_MULTITHREADED}${_boost_RELEASE_ABI_TAG}
    ${Boost_LIB_PREFIX}${Boost_NAMESPACE}_${COMPONENT}${_boost_MULTITHREADED}${_boost_RELEASE_ABI_TAG}-${Boost_LIB_VERSION}
    ${Boost_LIB_PREFIX}${Boost_NAMESPACE}_${COMPONENT}${_boost_MULTITHREADED}${_boost_RELEASE_ABI_TAG}
    ${Boost_LIB_PREFIX}${Boost_NAMESPACE}_${COMPONENT} )
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  if(_boost_STATIC_RUNTIME_WORKAROUND)
    set(_boost_RELEASE_STATIC_ABI_TAG "-s${_boost_RELEASE_ABI_TAG}")
    list(APPEND _boost_RELEASE_NAMES
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      ${Boost_LIB_PREFIX}${Boost_NAMESPACE}_${COMPONENT}${_boost_COMPILER}${_boost_MULTITHREADED}${_boost_RELEASE_STATIC_ABI_TAG}-${Boost_LIB_VERSION}
      ${Boost_LIB_PREFIX}${Boost_NAMESPACE}_${COMPONENT}${_boost_COMPILER}${_boost_MULTITHREADED}${_boost_RELEASE_STATIC_ABI_TAG}
      ${Boost_LIB_PREFIX}${Boost_NAMESPACE}_${COMPONENT}${_boost_MULTITHREADED}${_boost_RELEASE_STATIC_ABI_TAG}-${Boost_LIB_VERSION}
      ${Boost_LIB_PREFIX}${Boost_NAMESPACE}_${COMPONENT}${_boost_MULTITHREADED}${_boost_RELEASE_STATIC_ABI_TAG} )
1384
  endif()
1385 1386
  if(Boost_THREADAPI AND ${COMPONENT} STREQUAL "thread")
     _Boost_PREPEND_LIST_WITH_THREADAPI(_boost_RELEASE_NAMES ${_boost_RELEASE_NAMES})
1387
  endif()
1388 1389
  if(Boost_DEBUG)
    message(STATUS "[ ${CMAKE_CURRENT_LIST_FILE}:${CMAKE_CURRENT_LIST_LINE} ] "
1390
                   "Searching for ${UPPERCOMPONENT}_LIBRARY_RELEASE: ${_boost_RELEASE_NAMES}")
1391
  endif()
1392

1393 1394 1395 1396 1397 1398
  # 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()

1399
  # Avoid passing backslashes to _Boost_FIND_LIBRARY due to macro re-parsing.
1400
  string(REPLACE "\\" "/" _boost_LIBRARY_SEARCH_DIRS_tmp "${_boost_LIBRARY_SEARCH_DIRS_RELEASE}")
1401

1402
  _Boost_FIND_LIBRARY(Boost_${UPPERCOMPONENT}_LIBRARY_RELEASE RELEASE
1403
    NAMES ${_boost_RELEASE_NAMES}
1404
    HINTS ${_boost_LIBRARY_SEARCH_DIRS_tmp}
1405 1406 1407
    NAMES_PER_DIR
    DOC "${_boost_docstring_release}"
    )
1408

1409 1410 1411 1412
  #
  # Find DEBUG libraries
  #
  set(_boost_DEBUG_NAMES
1413 1414 1415 1416 1417 1418
    ${Boost_LIB_PREFIX}${Boost_NAMESPACE}_${COMPONENT}${_boost_COMPILER}${_boost_MULTITHREADED}${_boost_DEBUG_ABI_TAG}-${Boost_LIB_VERSION}
    ${Boost_LIB_PREFIX}${Boost_NAMESPACE}_${COMPONENT}${_boost_COMPILER}${_boost_MULTITHREADED}${_boost_DEBUG_ABI_TAG}
    ${Boost_LIB_PREFIX}${Boost_NAMESPACE}_${COMPONENT}${_boost_MULTITHREADED}${_boost_DEBUG_ABI_TAG}-${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}_${COMPONENT} )
1419 1420 1421
  if(_boost_STATIC_RUNTIME_WORKAROUND)
    set(_boost_DEBUG_STATIC_ABI_TAG "-s${_boost_DEBUG_ABI_TAG}")
    list(APPEND _boost_DEBUG_NAMES
1422 1423 1424 1425
      ${Boost_LIB_PREFIX}${Boost_NAMESPACE}_${COMPONENT}${_boost_COMPILER}${_boost_MULTITHREADED}${_boost_DEBUG_STATIC_ABI_TAG}-${Boost_LIB_VERSION}
      ${Boost_LIB_PREFIX}${Boost_NAMESPACE}_${COMPONENT}${_boost_COMPILER}${_boost_MULTITHREADED}${_boost_DEBUG_STATIC_ABI_TAG}
      ${Boost_LIB_PREFIX}${Boost_NAMESPACE}_${COMPONENT}${_boost_MULTITHREADED}${_boost_DEBUG_STATIC_ABI_TAG}-${Boost_LIB_VERSION}
      ${Boost_LIB_PREFIX}${Boost_NAMESPACE}_${COMPONENT}${_boost_MULTITHREADED}${_boost_DEBUG_STATIC_ABI_TAG} )
1426
  endif()
1427 1428
  if(Boost_THREADAPI AND ${COMPONENT} STREQUAL "thread")
     _Boost_PREPEND_LIST_WITH_THREADAPI(_boost_DEBUG_NAMES ${_boost_DEBUG_NAMES})
1429
  endif()
1430 1431 1432
  if(Boost_DEBUG)
    message(STATUS "[ ${CMAKE_CURRENT_LIST_FILE}:${CMAKE_CURRENT_LIST_LINE} ] "
                   "Searching for ${UPPERCOMPONENT}_LIBRARY_DEBUG: ${_boost_DEBUG_NAMES}")
1433
  endif()
1434

1435 1436 1437 1438 1439 1440
  # 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()

1441
  # Avoid passing backslashes to _Boost_FIND_LIBRARY due to macro re-parsing.
1442
  string(REPLACE "\\" "/" _boost_LIBRARY_SEARCH_DIRS_tmp "${_boost_LIBRARY_SEARCH_DIRS_DEBUG}")
1443

1444
  _Boost_FIND_LIBRARY(Boost_${UPPERCOMPONENT}_LIBRARY_DEBUG DEBUG
1445
    NAMES ${_boost_DEBUG_NAMES}
1446
    HINTS ${_boost_LIBRARY_SEARCH_DIRS_tmp}
1447 1448 1449
    NAMES_PER_DIR
    DOC "${_boost_docstring_debug}"
    )
1450

1451 1452 1453
  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}"  )
1454
  endif()
1455

1456
  _Boost_ADJUST_LIB_VARS(${UPPERCOMPONENT})
1457

1458
endforeach()
1459

1460 1461 1462 1463
# Restore the original find library ordering
if( Boost_USE_STATIC_LIBS )
  set(CMAKE_FIND_LIBRARY_SUFFIXES ${_boost_ORIG_CMAKE_FIND_LIBRARY_SUFFIXES})
endif()
1464

1465 1466 1467 1468
# ------------------------------------------------------------------------
#  End finding boost libraries
# ------------------------------------------------------------------------

1469
set(Boost_INCLUDE_DIRS ${Boost_INCLUDE_DIR})
1470 1471 1472 1473 1474 1475 1476 1477 1478 1479
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()
1480

1481 1482 1483 1484
# 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.
1485 1486 1487 1488 1489 1490 1491 1492
  set(_boost_CHECKED_COMPONENT FALSE)
  set(_Boost_MISSING_COMPONENTS "")
  foreach(COMPONENT ${Boost_FIND_COMPONENTS})
    string(TOUPPER ${COMPONENT} COMPONENT)
    set(_boost_CHECKED_COMPONENT TRUE)
    if(NOT Boost_${COMPONENT}_FOUND)
      string(TOLOWER ${COMPONENT} COMPONENT)
      list(APPEND _Boost_MISSING_COMPONENTS ${COMPONENT})
1493
    endif()
1494
  endforeach()
1495 1496 1497 1498
  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()
1499 1500 1501 1502

  if(Boost_DEBUG)
    message(STATUS "[ ${CMAKE_CURRENT_LIST_FILE}:${CMAKE_CURRENT_LIST_LINE} ] Boost_FOUND = ${Boost_FOUND}")
  endif()
1503

1504
  if (_Boost_MISSING_COMPONENTS)
1505
    set(Boost_FOUND 0)
1506 1507 1508
    # We were unable to find some libraries, so generate a sensible
    # error message that lists the libraries we were unable to find.
    set(Boost_ERROR_REASON
1509 1510 1511 1512 1513 1514
      "${Boost_ERROR_REASON}\nCould not find the following")
    if(Boost_USE_STATIC_LIBS)
      set(Boost_ERROR_REASON "${Boost_ERROR_REASON} static")
    endif()
    set(Boost_ERROR_REASON
      "${Boost_ERROR_REASON} Boost libraries:\n")
1515
    foreach(COMPONENT ${_Boost_MISSING_COMPONENTS})
1516
      set(Boost_ERROR_REASON
1517
        "${Boost_ERROR_REASON}        ${Boost_NAMESPACE}_${COMPONENT}\n")
1518
    endforeach()
1519

1520 1521 1522 1523 1524 1525 1526 1527
    list(LENGTH Boost_FIND_COMPONENTS Boost_NUM_COMPONENTS_WANTED)
    list(LENGTH _Boost_MISSING_COMPONENTS Boost_NUM_MISSING_COMPONENTS)
    if (${Boost_NUM_COMPONENTS_WANTED} EQUAL ${Boost_NUM_MISSING_COMPONENTS})
      set(Boost_ERROR_REASON
        "${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 ()
      set(Boost_ERROR_REASON
        "${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.")
1528
    endif ()
1529
  endif ()
1530

1531 1532 1533
  if( NOT Boost_LIBRARY_DIRS AND NOT _boost_CHECKED_COMPONENT )
    # Compatibility Code for backwards compatibility with CMake
    # 2.4's FindBoost module.
1534

1535 1536 1537 1538
    # 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})
1539

1540 1541 1542
    if("${_boost_LIB_DIR}" MATCHES "boost-[0-9]+")
      get_filename_component(_boost_LIB_DIR ${_boost_LIB_DIR} PATH)
    endif()
1543

1544 1545 1546 1547
    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()
1548

1549 1550 1551 1552 1553
    if(EXISTS "${_boost_LIB_DIR}/lib")
      set(_boost_LIB_DIR ${_boost_LIB_DIR}/lib)
    else()
      if(EXISTS "${_boost_LIB_DIR}/stage/lib")
        set(_boost_LIB_DIR ${_boost_LIB_DIR}/stage/lib)
1554
      else()
1555
        set(_boost_LIB_DIR "")
1556
      endif()
1557
    endif()
1558

1559
    if(_boost_LIB_DIR AND EXISTS "${_boost_LIB_DIR}")
1560
      set(Boost_LIBRARY_DIRS ${_boost_LIB_DIR})
1561
    endif()
1562

1563
  endif()
1564
else()
1565 1566 1567 1568 1569
  # 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()
1570 1571
endif()

1572 1573 1574 1575
# ------------------------------------------------------------------------
#  Add imported targets
# ------------------------------------------------------------------------

1576
if(Boost_FOUND)
1577 1578 1579 1580 1581 1582 1583 1584 1585 1586
  # 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 ${Boost_FIND_COMPONENTS})
1587
    if(_Boost_IMPORTED_TARGETS AND NOT TARGET Boost::${COMPONENT})
1588 1589 1590 1591 1592 1593 1594 1595 1596 1597 1598 1599 1600 1601 1602 1603 1604 1605 1606 1607 1608 1609 1610 1611 1612 1613 1614 1615 1616 1617 1618 1619 1620 1621 1622 1623 1624 1625 1626 1627 1628 1629 1630 1631 1632 1633 1634 1635
      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_${UPPERCOMPONENT}_LIBRARY_DEBUG}")
          set_property(TARGET Boost::${COMPONENT} APPEND PROPERTY
            IMPORTED_CONFIGURATIONS DEBUG)
          set_target_properties(Boost::${COMPONENT} PROPERTIES
            IMPORTED_LINK_INTERFACE_LANGUAGES_DEBUG "CXX"
            IMPORTED_LOCATION_DEBUG "${Boost_${UPPERCOMPONENT}_LIBRARY_DEBUG}")
        endif()
        if(EXISTS "${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_${UPPERCOMPONENT}_LIBRARY_RELEASE}")
        endif()
        if(_Boost_${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()
      endif()
    endif()
  endforeach()
endif()

1636 1637 1638
# ------------------------------------------------------------------------
#  Notification to end user about what was found
# ------------------------------------------------------------------------
1639

1640
set(Boost_LIBRARIES "")
1641 1642 1643 1644 1645 1646 1647 1648 1649 1650
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 )
1651
      if(NOT Boost_FIND_QUIETLY)
1652
        message (STATUS "  ${COMPONENT}")
1653
      endif()
1654
      list(APPEND Boost_LIBRARIES ${Boost_${UPPERCOMPONENT}_LIBRARY})
1655 1656 1657 1658 1659
    endif()
  endforeach()
else()
  if(Boost_FIND_REQUIRED)
    message(SEND_ERROR "Unable to find the requested Boost libraries.\n${Boost_ERROR_REASON}")
1660
  else()
1661 1662 1663 1664 1665 1666 1667 1668 1669
    if(NOT Boost_FIND_QUIETLY)
      # we opt not to automatically output Boost_ERROR_REASON here as
      # it could be quite lengthy and somewhat imposing in its requests
      # Since Boost is not always a required dependency we'll leave this
      # up to the end-user.
      if(Boost_DEBUG OR Boost_DETAILED_FAILURE_MSG)
        message(STATUS "Could NOT find Boost\n${Boost_ERROR_REASON}")
      else()
        message(STATUS "Could NOT find Boost")
1670
      endif()
1671
    endif()