ENH: Integrated FindBoost improvements changes from Andreas Pakulat, Mike Jackson, and myself

Modules/FindBoost.cmake

@@ -1,149 +1,566 @@
-# - Find the Boost includes and libraries.
-# The following variables are set if Boost is found.  If Boost is not
-# found, Boost_FOUND is set to false.
-#  Boost_FOUND        - True when the Boost include directory is found.
-#  Boost_INCLUDE_DIRS - the path to where the boost include files are.
-#  Boost_LIBRARY_DIRS - The path to where the boost library files are.
-#  Boost_LIB_DIAGNOSTIC_DEFINITIONS - Only set if using Windows.
-
-# ----------------------------------------------------------------------------
-# If you have installed Boost in a non-standard location or you have
-# just staged the boost files using bjam then you have three
-# options. In the following comments, it is assumed that <Your Path>
-# points to the root directory of the include directory of Boost. e.g
-# If you have put boost in C:\development\Boost then <Your Path> is
-# "C:/development/Boost" and in this directory there will be two
-# directories called "include" and "lib".
-# 1) After CMake runs, set Boost_INCLUDE_DIR to <Your Path>/include/boost<-version>
-# 2) Use CMAKE_INCLUDE_PATH to set a path to <Your Path>/include. This will allow FIND_PATH()
-#    to locate Boost_INCLUDE_DIR by utilizing the PATH_SUFFIXES option. e.g.
-#    SET(CMAKE_INCLUDE_PATH ${CMAKE_INCLUDE_PATH} "<Your Path>/include")
-# 3) Set an environment variable called ${BOOST_ROOT} that points to the root of where you have
-#    installed Boost, e.g. <Your Path>. It is assumed that there is at least a subdirectory called
-#    include in this path.
-#
-# Note:
-#  1) If you are just using the boost headers, then you do not need to use
-#     Boost_LIBRARY_DIRS in your CMakeLists.txt file.
-#  2) If Boost has not been installed, then when setting Boost_LIBRARY_DIRS
-#     the script will look for /lib first and, if this fails, then for /stage/lib.
-#
-# Usage:
-# In your CMakeLists.txt file do something like this:
-# ...
-# # Boost
-# FIND_PACKAGE(Boost)
-# ...
-# INCLUDE_DIRECTORIES(${Boost_INCLUDE_DIRS})
-# LINK_DIRECTORIES(${Boost_LIBRARY_DIRS})
-#
-# In Windows, we make the assumption that, if the Boost files are installed, the default directory
-# will be C:\boost.
-
-#
-# TODO:
-#
-# 1) Automatically find the Boost library files and eliminate the need
-#    to use Link Directories.
-#
-
-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")
-ENDIF(WIN32)
-
-
-SET(BOOST_INCLUDE_PATH_DESCRIPTION "directory containing the boost include files, e.g. /usr/local/include/boost-1_33_1 or c:/boost/include/boost-1_33_1")
-
-SET(BOOST_DIR_MESSAGE "Set the Boost_INCLUDE_DIR cmake cache entry to the ${BOOST_INCLUDE_PATH_DESCRIPTION}")
-
-SET(BOOST_DIR_SEARCH $ENV{BOOST_ROOT})
-IF(BOOST_DIR_SEARCH)
-  FILE(TO_CMAKE_PATH ${BOOST_DIR_SEARCH} BOOST_DIR_SEARCH)
-  SET(BOOST_DIR_SEARCH ${BOOST_DIR_SEARCH} ${BOOST_DIR_SEARCH}/include)
-ENDIF(BOOST_DIR_SEARCH)
-
-IF(WIN32)
-  SET(BOOST_DIR_SEARCH
-    ${BOOST_DIR_SEARCH}
-    C:/boost/include
-    D:/boost/include
-  )
-ENDIF(WIN32)
+# - Try to find Boost include dirs and libraries
+# Usage of this module as follows:
+#
+#     SET(Boost_USE_STATIC_LIBS ON)
+#     SET(Boost_USE_MULTITHREAD OFF)
+#     FIND_PACKAGE( Boost 1.34.1 COMPONENTS date_time filesystem iostreams ... )
+#
+# The Boost_ADDITIONAL_VERSIONS variable can be used to specify a list of
+# boost version numbers that should be taken into account when searching
+# for the libraries. Unfortunately boost puts the version number into the
+# actual filename for the libraries, so this might be needed in the future
+# when new Boost versions are released.
+#
+# Currently this module searches for the following version numbers:
+# 1.33, 1.33.0, 1.33.1, 1.34, 1.34.0, 1.34.1, 1.35, 1.35.0, 1.35.1, 1.36.0,
+# 1.36.1
+#
+# The components list needs to be the actual names of boost libraries, that is
+# the part of the actual library files that differ on different libraries. So
+# its "date_time" for "libboost_date_time...". Anything else will result in
+# errors
+#
+# You can provide a minimum version number that should be used. If you provide this 
+# version number and specify the REQUIRED attribute, this module will fail if it
+# can't find the specified or a later version. If you specify a version number this is
+# automatically put into the considered list of version numbers and thus doesn't need
+# to be specified in the Boost_ADDITIONAL_VERSIONS variable
+#
+# Variables used by this module, they can change the default behaviour and need to be set
+# before calling find_package:
+#  Boost_USE_MULTITHREAD         Can be set to OFF to use the non-multithreaded
+#                                boost libraries. Defaults to ON.
+#  Boost_USE_STATIC_LIBS         Can be set to ON to force the use of the static
+#                                boost libraries. Defaults to OFF.
+#  Boost_ADDITIONAL_VERSIONS     A list of version numbers to use for searching
+#                                the boost include directory. The default list
+#                                of version numbers is:
+#                                1.33, 1.33.0, 1.33.1, 1.34, 1.34.0, 1.34.1, 
+#                                1.35, 1.35.0, 1.35.1, 1.36.0, 1.36.1
+#                                If you want to look for an older or newer
+#                                version set this variable to a list of
+#                                strings, where each string contains a number, i.e.
+#                                SET(Boost_ADDITIONAL_VERSIONS "0.99.0" "1.35.0")
+#  BOOST_ROOT                    Preferred installation prefix for searching for Boost,
+#                                set this if the module has problems finding the proper Boost installation
+#  BOOST_INCLUDEDIR              Set this to the include directory of Boost, if the
+#                                module has problems finding the proper Boost installation
+#  BOOST_LIBRARYDIR              Set this to the lib directory of Boost, if the
+#                                module has problems finding the proper Boost installation
+#
+#  The last three variables are available also as environment variables
+#
+#
+# Variables defined by this module:
+#
+#  Boost_FOUND                          System has Boost, this means the include dir was found,
+#                                       as well as all the libraries specified in the COMPONENTS list
+#  Boost_INCLUDE_DIRS                   Boost include directories, not cached
+#  Boost_INCLUDE_DIR                    This is almost the same as above, but this one is cached and may be
+#                                       modified by advanced users
+#  Boost_LIBRARIES                      Link these to use the Boost libraries that you specified, not cached
+#  Boost_LIBRARY_DIRS                   The path to where the Boost library files are.
+#  Boost_VERSION                        The version number of the boost libraries that have been found,
+#                                       same as in version.hpp from Boost
+#  Boost_LIB_VERSION                    The version number in filename form as its appended to the library filenames
+#  Boost_MAJOR_VERSION                  major version number of boost
+#  Boost_MINOR_VERSION                  minor version number of boost
+#  Boost_SUBMINOR_VERSION               subminor version number of boost
+#  Boost_LIB_DIAGNOSTIC_DEFINITIONS     Only set on windows. Can be used with add_definitions 
+#                                       to print diagnostic information about the automatic 
+#                                       linking done on windows.
+
+# For each component you list the following variables are set.
+# ATTENTION: The component names need to be in lower case, just as the boost
+# library names however the cmake variables use upper case for the component
+# part. So you'd get Boost_SERIALIZATION_FOUND for example.
+#
+#  Boost_${COMPONENT}_FOUND             True IF the Boost library "component" was found.
+#  Boost_${COMPONENT}_LIBRARY           The absolute path of the Boost library "component".
+#  Boost_${COMPONENT}_LIBRARY_DEBUG     The absolute path of the debug version of the
+#                                       Boost library "component".
+#  Boost_${COMPONENT}_LIBRARY_RELEASE   The absolute path of the release version of the
+#                                       Boost library "component"
+#
+#  Copyright (c) 2006-2008 Andreas Schneider <[email protected]>
+#  Copyright (c) 2007      Wengo
+#  Copyright (c) 2007      Mike Jackson
+#  Copyright (c) 2008      Andreas Pakulat <[email protected]>
+#
+#  Redistribution AND use is allowed according to the terms of the New
+#  BSD license.
+#  For details see the accompanying COPYING-CMAKE-SCRIPTS file.
+#
+
+# this module required CMake 2.5 for the Boost_FIND_VERSION stuff
+CMAKE_MINIMUM_REQUIRED(VERSION "2.6" FATAL_ERROR)
 
-# Add in some path suffixes. These will have to be updated whenever a new Boost version comes out.
-SET(SUFFIX_FOR_PATH
- boost-1_34_1
- boost-1_34_0
- boost-1_34
- boost-1_33_1
- boost-1_33_0
-)
+# MESSAGE(STATUS "Finding Boost libraries.... ")
 
+OPTION(Boost_USE_MULTITHREADED "Use the multithreaded versions of the boost libraries" ON)
+
+SET( _boost_TEST_VERSIONS ${Boost_ADDITIONAL_VERSIONS} "1.36.1" "1.36.0" "1.35.1" "1.35.0" "1.35" "1.34.1" "1.34.0" "1.34" "1.33.1" "1.33.0" "1.33" )
+
+
+############################################
 #
-# Look for an installation.
+# Check the existence of the libraries.
 #
-FIND_PATH(Boost_INCLUDE_DIR NAMES boost/config.hpp PATH_SUFFIXES ${SUFFIX_FOR_PATH} PATHS
+############################################
+# 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
+#########################################################################
 
-  # Look in other places.
-  ${BOOST_DIR_SEARCH}
+MACRO (_Boost_ADJUST_LIB_VARS basename)
+  IF (Boost_INCLUDE_DIR )
+    #MESSAGE(STATUS "Adjusting ${basename} ")
 
-  # Help the user find it if we cannot.
-  DOC "The ${BOOST_INCLUDE_PATH_DESCRIPTION}"
-)
+    IF (Boost_${basename}_LIBRARY_DEBUG AND Boost_${basename}_LIBRARY_RELEASE)
+      # if the generator supports configuration types then set
+      # optimized and debug libraries, or if the CMAKE_BUILD_TYPE has a value
+      IF (CMAKE_CONFIGURATION_TYPES OR CMAKE_BUILD_TYPE)
+        SET(Boost_${basename}_LIBRARY optimized ${Boost_${basename}_LIBRARY_RELEASE} debug ${Boost_${basename}_LIBRARY_DEBUG})
+      ELSE(CMAKE_CONFIGURATION_TYPES OR CMAKE_BUILD_TYPE)
+        # if there are no configuration types and CMAKE_BUILD_TYPE has no value
+        # then just use the release libraries
+        SET(Boost_${basename}_LIBRARY ${Boost_${basename}_LIBRARY_RELEASE} )
+      ENDIF(CMAKE_CONFIGURATION_TYPES OR CMAKE_BUILD_TYPE)
+      SET(Boost_${basename}_LIBRARIES optimized ${Boost_${basename}_LIBRARY_RELEASE} debug ${Boost_${basename}_LIBRARY_DEBUG})
+    ENDIF (Boost_${basename}_LIBRARY_DEBUG AND Boost_${basename}_LIBRARY_RELEASE)
 
-SET(Boost_INCLUDE_DIRS ${Boost_INCLUDE_DIR})
+    # if only the release version was found, set the debug variable also to the release version
+    IF (Boost_${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 (Boost_${basename}_LIBRARY_RELEASE AND NOT Boost_${basename}_LIBRARY_DEBUG)
 
-# Now try to get the include and library path.
-IF(Boost_INCLUDE_DIR)
+    # 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 (Boost_${basename}_LIBRARY_DEBUG AND NOT Boost_${basename}_LIBRARY_RELEASE)
+    
+    IF (Boost_${basename}_LIBRARY)
+      SET(Boost_${basename}_LIBRARY ${Boost_${basename}_LIBRARY} CACHE FILEPATH "The Boost ${basename} library")
+      GET_FILENAME_COMPONENT(Boost_LIBRARY_DIRS "${Boost_${basename}_LIBRARY}" PATH)
+      SET(Boost_${basename}_FOUND ON CACHE INTERNAL "Was the boost boost ${basename} library found")
+    ENDIF (Boost_${basename}_LIBRARY)
 
-  # Look for the boost library path.
-  # Note that the user may not have installed any libraries
-  # so it is quite possible the Boost_LIBRARY_PATH may not exist.
-  SET(Boost_LIBRARY_DIR ${Boost_INCLUDE_DIR})
-
-  IF("${Boost_LIBRARY_DIR}" MATCHES "boost-[0-9]+")
-    GET_FILENAME_COMPONENT(Boost_LIBRARY_DIR ${Boost_LIBRARY_DIR} PATH)
-  ENDIF ("${Boost_LIBRARY_DIR}" MATCHES "boost-[0-9]+")
-
-  IF("${Boost_LIBRARY_DIR}" MATCHES "/include$")
-    # Strip off the trailing "/include" in the path.
-    GET_FILENAME_COMPONENT(Boost_LIBRARY_DIR ${Boost_LIBRARY_DIR} PATH)
-  ENDIF("${Boost_LIBRARY_DIR}" MATCHES "/include$")
-
-  IF(EXISTS "${Boost_LIBRARY_DIR}/lib")
-    SET (Boost_LIBRARY_DIR ${Boost_LIBRARY_DIR}/lib)
-  ELSE(EXISTS "${Boost_LIBRARY_DIR}/lib")
-    IF(EXISTS "${Boost_LIBRARY_DIR}/stage/lib")
-      SET(Boost_LIBRARY_DIR ${Boost_LIBRARY_DIR}/stage/lib)
-    ELSE(EXISTS "${Boost_LIBRARY_DIR}/stage/lib")
-      SET(Boost_LIBRARY_DIR "")
-    ENDIF(EXISTS "${Boost_LIBRARY_DIR}/stage/lib")
-  ENDIF(EXISTS "${Boost_LIBRARY_DIR}/lib")
-
-  IF(Boost_LIBRARY_DIR AND EXISTS "${Boost_LIBRARY_DIR}")
-    SET(Boost_LIBRARY_DIRS ${Boost_LIBRARY_DIR})
-  ENDIF(Boost_LIBRARY_DIR AND EXISTS "${Boost_LIBRARY_DIR}")
+  ENDIF (Boost_INCLUDE_DIR )
+  # Make variables changeble to the advanced user
+  MARK_AS_ADVANCED(
+      Boost_${basename}_LIBRARY
+      Boost_${basename}_LIBRARY_RELEASE
+      Boost_${basename}_LIBRARY_DEBUG
+  )
+ENDMACRO (_Boost_ADJUST_LIB_VARS)
+
+#-------------------------------------------------------------------------------
+
+
+SET( _boost_IN_CACHE TRUE)
+IF(Boost_INCLUDE_DIR)
+  FOREACH(COMPONENT ${Boost_FIND_COMPONENTS})
+    STRING(TOUPPER ${COMPONENT} COMPONENT)
+    IF(NOT Boost_${COMPONENT}_FOUND)
+      SET( _boost_IN_CACHE FALSE)
+    ENDIF(NOT Boost_${COMPONENT}_FOUND)
+  ENDFOREACH(COMPONENT)
+ELSE(Boost_INCLUDE_DIR)
+  SET( _boost_IN_CACHE FALSE)
 ENDIF(Boost_INCLUDE_DIR)
 
-# We have found boost. It is possible that the user has not
-# compiled any libraries so we set Boost_FOUND to be true here.
-# handle the QUIETLY and REQUIRED arguments and set BOOST_FOUND to TRUE if 
-# all listed variables are TRUE
-INCLUDE(FindPackageHandleStandardArgs)
-FIND_PACKAGE_HANDLE_STANDARD_ARGS(Boost "Boost was not found. ${BOOST_DIR_MESSAGE}" Boost_INCLUDE_DIR )
-SET(Boost_FOUND ${BOOST_FOUND})
+IF (_boost_IN_CACHE)
+  # in cache already
+  SET(Boost_FOUND TRUE)
+  FOREACH(COMPONENT ${Boost_FIND_COMPONENTS})
+    STRING(TOUPPER ${COMPONENT} COMPONENT)
+    _Boost_ADJUST_LIB_VARS( ${COMPONENT} )
+    SET(Boost_LIBRARIES ${Boost_LIBRARIES} ${Boost_${COMPONENT}_LIBRARY})
+  ENDFOREACH(COMPONENT)
+  SET(Boost_INCLUDE_DIRS ${Boost_INCLUDE_DIR})
+  IF(Boost_VERSION AND NOT "${Boost_VERSION}" STREQUAL "0")
+    MATH(EXPR Boost_MAJOR_VERSION "${Boost_VERSION} / 100000")
+    MATH(EXPR Boost_MINOR_VERSION "${Boost_VERSION} / 100 % 1000")
+    MATH(EXPR Boost_SUBMINOR_VERSION "${Boost_VERSION} % 100")
+  ENDIF(Boost_VERSION AND NOT "${Boost_VERSION}" STREQUAL "0")
+ELSE (_boost_IN_CACHE)
+  # Need to search for boost
+
+  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" CACHE STRING "Boost diagnostic define")
+  ENDIF(WIN32)
+
+
+  SET(_boost_INCLUDE_SEARCH_DIRS
+    C:/boost/include
+    "C:/Program Files/boost/boost_${Boost_FIND_VERSION_MAJOR}_${Boost_FIND_VERSION_MINOR}_${Boost_FIND_VERSION_PATCH}"
+    # D: is very often the cdrom drive, IF you don't have a
+    # cdrom inserted it will popup a very annoying dialog
+    #D:/boost/include
+    /sw/local/include
+  )
+
+  SET(_boost_LIBRARIES_SEARCH_DIRS
+    C:/boost/lib
+    "C:/Program Files/boost/boost_${Boost_FIND_VERSION_MAJOR}_${Boost_FIND_VERSION_MINOR}_${Boost_FIND_VERSION_PATCH}/lib"
+    /sw/local/lib
+  )
+
+  IF( NOT $ENV{BOOST_ROOT} STREQUAL "" )
+    SET(_boost_INCLUDE_SEARCH_DIRS $ENV{BOOST_ROOT}/include ${_boost_INCLUDE_SEARCH_DIRS})
+    SET(_boost_LIBRARIES_SEARCH_DIRS $ENV{BOOST_ROOT}/lib ${_boost_INCLUDE_SEARCH_DIRS})
+  ENDIF( NOT $ENV{BOOST_ROOT} STREQUAL "" )
+
+  IF( NOT $ENV{BOOST_INCLUDEDIR} STREQUAL "" )
+    SET(_boost_INCLUDE_SEARCH_DIRS $ENV{BOOST_INCLUDEDIR} ${_boost_INCLUDE_SEARCH_DIRS})
+  ENDIF( NOT $ENV{BOOST_INCLUDEDIR} STREQUAL "" )
+
+  IF( NOT $ENV{BOOST_LIBRARYDIR} STREQUAL "" )
+    SET(_boost_LIBRARIES_SEARCH_DIRS $ENV{BOOST_LIBRARYDIR} ${_boost_INCLUDE_SEARCH_DIRS})
+  ENDIF( NOT $ENV{BOOST_LIBRARYDIR} STREQUAL "" )
+
+  IF( BOOST_ROOT )
+    IF( WIN32 )
+      SET(_boost_INCLUDE_SEARCH_DIRS ${BOOST_ROOT} ${_boost_INCLUDE_SEARCH_DIRS})
+    ELSE( WIN32 )
+      SET(_boost_INCLUDE_SEARCH_DIRS ${BOOST_ROOT}/include ${_boost_INCLUDE_SEARCH_DIRS})
+    ENDIF( WIN32 )
+    SET(_boost_LIBRARIES_SEARCH_DIRS ${BOOST_ROOT}/lib ${_boost_LIBRARIES_SEARCH_DIRS})
+  ENDIF( BOOST_ROOT )
+
+  IF( BOOST_INCLUDEDIR )
+    SET(_boost_INCLUDE_SEARCH_DIRS ${BOOST_INCLUDEDIR} ${_boost_INCLUDE_SEARCH_DIRS})
+  ENDIF( BOOST_INCLUDEDIR )
+
+  IF( BOOST_LIBRARYDIR )
+    SET(_boost_LIBRARIES_SEARCH_DIRS ${BOOST_LIBRARYDIR} ${_boost_LIBRARIES_SEARCH_DIRS})
+  ENDIF( BOOST_LIBRARYDIR )
+
+  #Try first in our own include search paths (e.g. BOOST_ROOT)
+  FOREACH(_boost_VER ${_boost_TEST_VERSIONS})
+    IF( NOT Boost_INCLUDE_DIR )
+
+      # Add in a path suffix, based on the required version, ideally we could
+      # read this from version.hpp, but for that to work we'd need to know the include
+      # dir already
+      SET(_boost_PATH_SUFFIX
+        boost-${_boost_VER}
+      )
+
+      IF(_boost_PATH_SUFFIX MATCHES "[0-9]+\\.[0-9]+\\.[0-9]+")
+          STRING(REGEX REPLACE "([0-9]+)\\.([0-9]+)\\.([0-9]+)" "\\1_\\2_\\3" _boost_PATH_SUFFIX ${_boost_PATH_SUFFIX})
+      ELSEIF(_boost_PATH_SUFFIX MATCHES "[0-9]+\\.[0-9]+")
+          STRING(REGEX REPLACE "([0-9]+)\\.([0-9]+)" "\\1_\\2" _boost_PATH_SUFFIX ${_boost_PATH_SUFFIX})
+      ENDIF(_boost_PATH_SUFFIX MATCHES "[0-9]+\\.[0-9]+\\.[0-9]+")
+
+
+      FIND_PATH(Boost_INCLUDE_DIR
+          NAMES         boost/config.hpp
+          PATHS         ${_boost_INCLUDE_SEARCH_DIRS}
+          PATH_SUFFIXES ${_boost_PATH_SUFFIX}
+          NO_DEFAULT_PATH
+      )
+
+    ENDIF( NOT Boost_INCLUDE_DIR )
+  ENDFOREACH(_boost_VER)
+
+  # If nothing is found search again using system default paths
+  FOREACH(_boost_VER ${_boost_TEST_VERSIONS})
+    IF( NOT Boost_INCLUDE_DIR )
+
+      # Add in a path suffix, based on the required version, ideally we could
+      # read this from version.hpp, but for that to work we'd need to know the include
+      # dir already
+      SET(_boost_PATH_SUFFIX
+        boost-${_boost_VER}
+      )
+
+      IF(_boost_PATH_SUFFIX MATCHES "[0-9]+\\.[0-9]+\\.[0-9]+")
+          STRING(REGEX REPLACE "([0-9]+)\\.([0-9]+)\\.([0-9]+)" "\\1_\\2_\\3" _boost_PATH_SUFFIX ${_boost_PATH_SUFFIX})
+      ELSEIF(_boost_PATH_SUFFIX MATCHES "[0-9]+\\.[0-9]+")
+          STRING(REGEX REPLACE "([0-9]+)\\.([0-9]+)" "\\1_\\2" _boost_PATH_SUFFIX ${_boost_PATH_SUFFIX})
+      ENDIF(_boost_PATH_SUFFIX MATCHES "[0-9]+\\.[0-9]+\\.[0-9]+")
+
+      FIND_PATH(Boost_INCLUDE_DIR
+          NAMES         boost/config.hpp
+          PATH_SUFFIXES ${_boost_PATH_SUFFIX}
+      )
+ 
+    ENDIF( NOT Boost_INCLUDE_DIR )
+  ENDFOREACH(_boost_VER)
+  IF(Boost_INCLUDE_DIR)
+    # Extract Boost_VERSION and Boost_LIB_VERSION from version.hpp
+    # Read the whole file:
+    #
+    SET(BOOST_VERSION 0)
+    SET(BOOST_LIB_VERSION "")
+    FILE(READ "${Boost_INCLUDE_DIR}/boost/version.hpp" _boost_VERSION_HPP_CONTENTS)
+  
+    STRING(REGEX REPLACE ".*#define BOOST_VERSION ([0-9]+).*" "\\1" Boost_VERSION "${_boost_VERSION_HPP_CONTENTS}")
+    STRING(REGEX REPLACE ".*#define BOOST_LIB_VERSION \"([0-9_]+)\".*" "\\1" Boost_LIB_VERSION "${_boost_VERSION_HPP_CONTENTS}")
+  
+    SET(Boost_LIB_VERSION ${Boost_LIB_VERSION} CACHE INTERNAL "The library version string for boost libraries")
+    SET(Boost_VERSION ${Boost_VERSION} CACHE INTERNAL "The version number for boost libraries")
+    
+    IF(NOT "${Boost_VERSION}" STREQUAL "0")
+      MATH(EXPR Boost_MAJOR_VERSION "${Boost_VERSION} / 100000")
+      MATH(EXPR Boost_MINOR_VERSION "${Boost_VERSION} / 100 % 1000")
+      MATH(EXPR Boost_SUBMINOR_VERSION "${Boost_VERSION} % 100")
+  
+    ENDIF(NOT "${Boost_VERSION}" STREQUAL "0")
+  ENDIF(Boost_INCLUDE_DIR)
+
+
+  #Setting some more suffixes for the library
+  SET (Boost_LIB_PREFIX "")
+  IF ( WIN32 AND Boost_USE_STATIC_LIBS )
+    SET (Boost_LIB_PREFIX "lib")
+  ENDIF ( WIN32 AND Boost_USE_STATIC_LIBS )
+  SET (_boost_COMPILER "-gcc")
+  IF (MSVC71)
+    SET (_boost_COMPILER "-vc71")
+  ENDIF(MSVC71)
+  IF (MSVC80)
+    SET (_boost_COMPILER "-vc80")
+  ENDIF(MSVC80)
+  IF (MSVC90)
+    SET (_boost_COMPILER "-vc90")
+  ENDIF (MSVC90)
+  IF (MINGW)
+    EXEC_PROGRAM(${CMAKE_CXX_COMPILER}
+      ARGS --version
+      OUTPUT_VARIABLE _boost_COMPILER_VERSION
+      )
+    STRING(REGEX REPLACE ".* ([0-9])\\.([0-9])\\.[0-9] .*" "\\1\\2"
+      _boost_COMPILER_VERSION ${_boost_COMPILER_VERSION})
+    SET (_boost_COMPILER "-mgw${_boost_COMPILER_VERSION}")
+  ENDIF(MINGW)
+  IF (CYGWIN)
+    SET (_boost_COMPILER "-gcc")
+  ENDIF (CYGWIN)
+  IF (UNIX)
+    IF (APPLE)
+        SET (_boost_COMPILER "")
+    ELSE (APPLE)
+      IF (NOT CMAKE_COMPILER_IS_GNUCC)
+        # This is for the intel compiler
+        SET (_boost_COMPILER "-il")
+      ELSE (NOT CMAKE_COMPILER_IS_GNUCC)
+        #find out the version of gcc being used.
+        EXEC_PROGRAM(${CMAKE_CXX_COMPILER}
+            ARGS --version
+            OUTPUT_VARIABLE _boost_COMPILER_VERSION
+        )
+        STRING(REGEX REPLACE ".* ([0-9])\\.([0-9])\\.[0-9] .*" "\\1\\2"
+               _boost_COMPILER_VERSION ${_boost_COMPILER_VERSION})
+        SET (_boost_COMPILER "-gcc${_boost_COMPILER_VERSION}")
+      ENDIF (NOT CMAKE_COMPILER_IS_GNUCC)
+    ENDIF (APPLE)
+  ENDIF(UNIX)
+
+  SET (_boost_MULTITHREADED "-mt")
+
+  IF( NOT Boost_USE_MULTITHREADED )
+    SET (_boost_MULTITHREADED "")
+  ENDIF( NOT Boost_USE_MULTITHREADED )
+
+  SET( _boost_STATIC_TAG "")
+  IF (WIN32)
+    IF(MSVC)
+      SET (_boost_ABI_TAG "g")
+    ENDIF(MSVC)
+    IF( Boost_USE_STATIC_LIBS )
+      SET( _boost_STATIC_TAG "-s")
+    ENDIF( Boost_USE_STATIC_LIBS )
+  ENDIF(WIN32)
+  SET (_boost_ABI_TAG "${_boost_ABI_TAG}d")
+
+  # ------------------------------------------------------------------------
+  #  Begin finding boost libraries
+  # ------------------------------------------------------------------------
+  FOREACH(COMPONENT ${Boost_FIND_COMPONENTS})
+    STRING(TOUPPER ${COMPONENT} UPPERCOMPONENT)
+    SET( Boost_${UPPERCOMPONENT}_LIBRARY "Boost_${UPPERCOMPONENT}_LIBRARY-NOTFOUND" )
+    SET( Boost_${UPPERCOMPONENT}_LIBRARY_RELEASE "Boost_${UPPERCOMPONENT}_LIBRARY_RELEASE-NOTFOUND" )
+    SET( Boost_${UPPERCOMPONENT}_LIBRARY_DEBUG "Boost_${UPPERCOMPONENT}_LIBRARY_DEBUG-NOTFOUND")
+
+    # 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})
+      ELSE(WIN32)
+        SET(CMAKE_FIND_LIBRARY_SUFFIXES .a ${CMAKE_FIND_LIBRARY_SUFFIXES})
+      ENDIF(WIN32)
+    ENDIF( Boost_USE_STATIC_LIBS )
+
+    FIND_LIBRARY(Boost_${UPPERCOMPONENT}_LIBRARY_RELEASE
+        NAMES  ${Boost_LIB_PREFIX}boost_${COMPONENT}${_boost_COMPILER}${_boost_MULTITHREADED}-${Boost_LIB_VERSION}
+               ${Boost_LIB_PREFIX}boost_${COMPONENT}${_boost_COMPILER}${_boost_MULTITHREADED}${_boost_STATIC_TAG}-${Boost_LIB_VERSION}
+               ${Boost_LIB_PREFIX}boost_${COMPONENT}${_boost_MULTITHREADED}
+               ${Boost_LIB_PREFIX}boost_${COMPONENT}${_boost_MULTITHREADED}${_boost_STATIC_TAG}
+               ${Boost_LIB_PREFIX}boost_${COMPONENT}
+        PATHS  ${_boost_LIBRARIES_SEARCH_DIRS}
+        NO_DEFAULT_PATH
+    )
+
+    IF( NOT ${Boost_${UPPERCOMPONENT}_LIBRARY_RELEASE} )
+      FIND_LIBRARY(Boost_${UPPERCOMPONENT}_LIBRARY_RELEASE
+          NAMES  ${Boost_LIB_PREFIX}boost_${COMPONENT}${_boost_COMPILER}${_boost_MULTITHREADED}-${Boost_LIB_VERSION}
+                 ${Boost_LIB_PREFIX}boost_${COMPONENT}${_boost_COMPILER}${_boost_MULTITHREADED}${_boost_STATIC_TAG}-${Boost_LIB_VERSION}
+                 ${Boost_LIB_PREFIX}boost_${COMPONENT}${_boost_MULTITHREADED}
+                 ${Boost_LIB_PREFIX}boost_${COMPONENT}${_boost_MULTITHREADED}${_boost_STATIC_TAG}
+                 ${Boost_LIB_PREFIX}boost_${COMPONENT}
+      )
+    ENDIF( NOT ${Boost_${UPPERCOMPONENT}_LIBRARY_RELEASE} )
+
+    FIND_LIBRARY(Boost_${UPPERCOMPONENT}_LIBRARY_DEBUG
+        NAMES  ${Boost_LIB_PREFIX}boost_${COMPONENT}${_boost_COMPILER}${_boost_MULTITHREADED}-${_boost_ABI_TAG}-${Boost_LIB_VERSION}
+               ${Boost_LIB_PREFIX}boost_${COMPONENT}${_boost_COMPILER}${_boost_MULTITHREADED}${_boost_STATIC_TAG}${_boost_ABI_TAG}-${Boost_LIB_VERSION}
+               ${Boost_LIB_PREFIX}boost_${COMPONENT}${_boost_MULTITHREADED}-${_boost_ABI_TAG}
+               ${Boost_LIB_PREFIX}boost_${COMPONENT}${_boost_MULTITHREADED}${_boost_STATIC_TAG}${_boost_ABI_TAG}
+               ${Boost_LIB_PREFIX}boost_${COMPONENT}-${_boost_ABI_TAG}
+        PATHS  ${_boost_LIBRARIES_SEARCH_DIRS}
+        NO_DEFAULT_PATH
+    )
+
+    IF( NOT ${Boost_${UPPERCOMPONENT}_LIBRARY_DEBUG} )
+      FIND_LIBRARY(Boost_${UPPERCOMPONENT}_LIBRARY_DEBUG
+          NAMES  ${Boost_LIB_PREFIX}boost_${COMPONENT}${_boost_COMPILER}${_boost_MULTITHREADED}-${_boost_ABI_TAG}-${Boost_LIB_VERSION}
+               ${Boost_LIB_PREFIX}boost_${COMPONENT}${_boost_COMPILER}${_boost_MULTITHREADED}${_boost_STATIC_TAG}${_boost_ABI_TAG}-${Boost_LIB_VERSION}
+               ${Boost_LIB_PREFIX}boost_${COMPONENT}${_boost_MULTITHREADED}-${_boost_ABI_TAG}
+               ${Boost_LIB_PREFIX}boost_${COMPONENT}${_boost_MULTITHREADED}${_boost_STATIC_TAG}${_boost_ABI_TAG}
+               ${Boost_LIB_PREFIX}boost_${COMPONENT}-${_boost_ABI_TAG}
+      )
+    ENDIF( NOT ${Boost_${UPPERCOMPONENT}_LIBRARY_DEBUG} )
+    _Boost_ADJUST_LIB_VARS(${UPPERCOMPONENT})
+    IF( Boost_USE_STATIC_LIBS )
+      SET(CMAKE_FIND_LIBRARY_SUFFIXES ${_boost_ORIG_CMAKE_FIND_LIBRARY_SUFFIXES})
+    ENDIF( Boost_USE_STATIC_LIBS )
+  ENDFOREACH(COMPONENT)
+  # ------------------------------------------------------------------------
+  #  End finding boost libraries
+  # ------------------------------------------------------------------------
+
+  SET(Boost_INCLUDE_DIRS
+    ${Boost_INCLUDE_DIR}
+  )
+
+  # MESSAGE(STATUS "Boost_INCLUDE_DIRS: ${Boost_INCLUDE_DIRS}")
+  # MESSAGE(STATUS "Boost_LIBRARIES: ${Boost_LIBRARIES}")
+
+  SET(Boost_FOUND FALSE)
+  IF(Boost_INCLUDE_DIR)
+    SET( Boost_FOUND TRUE )
+    IF( Boost_FIND_VERSION_MAJOR AND Boost_VERSION_MAJOR LESS "${Boost_FIND_VERSION_MAJOR}" )
+      SET( Boost_FOUND FALSE )
+    ELSE( Boost_FIND_VERSION_MAJOR AND Boost_VERSION_MAJOR LESS "${Boost_FIND_VERSION_MAJOR}" )
+      IF( Boost_FIND_VERSION_MINOR AND Boost_VERSION_MINOR LESS "${Boost_FIND_VERSION_MINOR}" )
+        SET( Boost_FOUND FALSE )
+      ELSE( Boost_FIND_VERSION_MINOR AND Boost_VERSION_MINOR LESS "${Boost_FIND_VERSION_MINOR}" )
+        IF( Boost_FIND_VERSION_PATCH AND Boost_VERSION_SUBMINOR LESS "${Boost_FIND_VERSION_PATCH}" )
+          SET( Boost_FOUND FALSE )
+        ENDIF( Boost_FIND_VERSION_PATCH AND Boost_VERSION_SUBMINOR LESS "${Boost_FIND_VERSION_PATCH}" )
+      ENDIF( Boost_FIND_VERSION_MINOR AND Boost_VERSION_MINOR LESS "${Boost_FIND_VERSION_MINOR}" )
+    ENDIF( Boost_FIND_VERSION_MAJOR AND Boost_VERSION_MAJOR LESS "${Boost_FIND_VERSION_MAJOR}" )
+    set(_boost_CHECKED_COMPONENT FALSE)
+    FOREACH(COMPONENT ${Boost_FIND_COMPONENTS})
+      STRING(TOUPPER ${COMPONENT} COMPONENT)
+      set(_boost_CHECKED_COMPONENT TRUE)
+      IF(NOT Boost_${COMPONENT}_FOUND)
+        SET( Boost_FOUND FALSE)
+      ENDIF(NOT Boost_${COMPONENT}_FOUND)
+    ENDFOREACH(COMPONENT)
+    IF( NOT Boost_LIBRARY_DIRS AND NOT _boost_CHECKED_COMPONENT )
+      # Compatibility Code for backwards compatibility with CMake 2.4
+
+      # Look for the boost library path.
+      # Note that the user may not have installed any libraries
+      # so it is quite possible the Boost_LIBRARY_PATH may not exist.
+      SET(_boost_LIB_DIR ${Boost_INCLUDE_DIR})
+    
+      IF("${_boost_LIB_DIR}" MATCHES "boost-[0-9]+")
+        GET_FILENAME_COMPONENT(_boost_LIB_DIR ${_boost_LIB_DIR} PATH)
+      ENDIF ("${_boost_LIB_DIR}" MATCHES "boost-[0-9]+")
+    
+      IF("${_boost_LIB_DIR}" MATCHES "/include$")
+        # Strip off the trailing "/include" in the path.
+        GET_FILENAME_COMPONENT(_boost_LIB_DIR ${_boost_LIB_DIR} PATH)
+      ENDIF("${_boost_LIB_DIR}" MATCHES "/include$")
+    
+      IF(EXISTS "${_boost_LIB_DIR}/lib")
+        SET (_boost_LIB_DIR ${_boost_LIB_DIR}/lib)
+      ELSE(EXISTS "${_boost_LIB_DIR}/lib")
+        IF(EXISTS "${_boost_LIB_DIR}/stage/lib")
+          SET(_boost_LIB_DIR ${_boost_LIB_DIR}/stage/lib)
+        ELSE(EXISTS "${_boost_LIB_DIR}/stage/lib")
+          SET(_boost_LIB_DIR "")
+        ENDIF(EXISTS "${_boost_LIB_DIR}/stage/lib")
+      ENDIF(EXISTS "${_boost_LIB_DIR}/lib")
+    
+      IF(_boost_LIB_DIR AND EXISTS "${_boost_LIB_DIR}")
+        SET(Boost_LIBRARY_DIRS ${_boost_LIB_DIR})
+      ENDIF(_boost_LIB_DIR AND EXISTS "${_boost_LIB_DIR}")
+
+    ENDIF( NOT Boost_LIBRARY_DIRS AND NOT _boost_CHECKED_COMPONENT )
+
+  ELSE(Boost_INCLUDE_DIR)
+    SET( Boost_FOUND FALSE)
+  ENDIF(Boost_INCLUDE_DIR)
+
+  IF (Boost_FOUND)
+      IF (NOT Boost_FIND_QUIETLY)
+        MESSAGE(STATUS "Boost version: ${Boost_MAJOR_VERSION}.${Boost_MINOR_VERSION}.${Boost_SUBMINOR_VERSION}")
+      ENDIF(NOT Boost_FIND_QUIETLY)
+      IF (NOT Boost_FIND_QUIETLY)
+        MESSAGE(STATUS "Found the following Boost libraries:")
+      ENDIF(NOT Boost_FIND_QUIETLY)
+      FOREACH ( COMPONENT  ${Boost_FIND_COMPONENTS} )
+        STRING( TOUPPER ${COMPONENT} UPPERCOMPONENT )
+        IF ( Boost_${UPPERCOMPONENT}_FOUND )
+          IF (NOT Boost_FIND_QUIETLY)
+            MESSAGE (STATUS "  ${COMPONENT}")
+          ENDIF(NOT Boost_FIND_QUIETLY)
+          SET(Boost_LIBRARIES ${Boost_LIBRARIES} ${Boost_${UPPERCOMPONENT}_LIBRARY})
+        ENDIF ( Boost_${UPPERCOMPONENT}_FOUND )
+      ENDFOREACH(COMPONENT)
+  ELSE (Boost_FOUND)
+      IF (Boost_FIND_REQUIRED)
+        MESSAGE(STATUS "Boost version required: ${Boost_FIND_VERSION}. Found: ${Boost_MAJOR_VERSION}.${Boost_MINOR_VERSION}.${Boost_SUBMINOR_VERSION}")
+        MESSAGE(FATAL_ERROR "Couldn't find the Boost libraries and/or include directory, or the version found is too old. Please install the Boost libraries AND development packages. You can set BOOST_ROOT, BOOST_INCLUDEDIR and BOOST_LIBRARYDIR to help find Boost.")
+      ENDIF(Boost_FIND_REQUIRED)
+  ENDIF(Boost_FOUND)
+
+  # Under Windows, automatic linking is performed, so no need to specify the libraries.
+  IF (WIN32)
+    IF (NOT MINGW)
+      SET(Boost_LIBRARIES "")
+    ENDIF (NOT MINGW)
+  ENDIF(WIN32)
+
+  # show the Boost_INCLUDE_DIRS AND Boost_LIBRARIES variables only in the advanced view
+  MARK_AS_ADVANCED(Boost_INCLUDE_DIR
+      Boost_INCLUDE_DIRS
+      Boost_LIBRARY_DIRS
+      Boost_USE_MULTITHREADED
+  )
+ENDIF(_boost_IN_CACHE)
 
-MARK_AS_ADVANCED(Boost_INCLUDE_DIR)