ENH: Adding FindBoost.cmake module from Andrew Maclean. This addresses bug#3447.
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Brad King
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# - Find the Boost includes and libraries.
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# The following variables are set if Boost is found. If Boost is not
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# found, Boost_FOUND is set to false.
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# Boost_FOUND - True when the Boost include directory is found.
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# Boost_INCLUDE_DIRS - the path to where the boost include files are.
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# Boost_LIBRARY_DIRS - The path to where the boost library files are.
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# Boost_LIB_DIAGNOSTIC_DEFINITIONS - Only set if using Windows.
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# ----------------------------------------------------------------------------
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# If you have installed Boost in a non-standard location or you have
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# just staged the boost files using bjam then you have three
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# options. In the following comments, it is assumed that <Your Path>
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# points to the root directory of the include directory of Boost. e.g
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# If you have put boost in C:\development\Boost then <Your Path> is
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# "C:/development/Boost" and in this directory there will be two
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# directories called "include" and "lib".
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# 1) After CMake runs, set Boost_INCLUDE_DIR to <Your Path>/include/boost<-version>
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# 2) Use CMAKE_INCLUDE_PATH to set a path to <Your Path>/include. This will allow FIND_PATH()
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# to locate Boost_INCLUDE_DIR by utilizing the PATH_SUFFIXES option. e.g.
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# SET(CMAKE_INCLUDE_PATH ${CMAKE_INCLUDE_PATH} "<Your Path>/include")
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# 3) Set an environment variable called ${BOOST_ROOT} that points to the root of where you have
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# installed Boost, e.g. <Your Path>. It is assumed that there is at least a subdirectory called
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# include in this path.
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#
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# Note:
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# 1) If you are just using the boost headers, then you do not need to use
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# Boost_LIBRARY_DIRS in your CMakeLists.txt file.
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# 2) If Boost has not been installed, then when setting Boost_LIBRARY_DIRS
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# the script will look for /lib first and, if this fails, then for /stage/lib.
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#
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# Usage:
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# In your CMakeLists.txt file do something like this:
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# ...
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# # Boost
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# FIND_PACKAGE(Boost)
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# ...
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# INCLUDE_DIRECTORIES(${Boost_INCLUDE_DIRS})
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# LINK_DIRECTORIES(${Boost_LIBRARY_DIRS})
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#
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# In Windows, we make the assumption that, if the Boost files are installed, the default directory
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# will be C:\boost.
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#
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# TODO:
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#
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# 1) Automatically find the Boost library files and eliminate the need
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# to use Link Directories.
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#
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IF(WIN32)
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# In windows, automatic linking is performed, so you do not have to specify the libraries.
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# If you are linking to a dynamic runtime, then you can choose to link to either a static or a
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# dynamic Boost library, the default is to do a static link. You can alter this for a specific
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# library "whatever" by defining BOOST_WHATEVER_DYN_LINK to force Boost library "whatever" to
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# be linked dynamically. Alternatively you can force all Boost libraries to dynamic link by
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# defining BOOST_ALL_DYN_LINK.
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# This feature can be disabled for Boost library "whatever" by defining BOOST_WHATEVER_NO_LIB,
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# or for all of Boost by defining BOOST_ALL_NO_LIB.
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# If you want to observe which libraries are being linked against then defining
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# BOOST_LIB_DIAGNOSTIC will cause the auto-linking code to emit a #pragma message each time
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# a library is selected for linking.
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SET(Boost_LIB_DIAGNOSTIC_DEFINITIONS "-DBOOST_LIB_DIAGNOSTIC")
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ENDIF(WIN32)
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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")
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SET(BOOST_DIR_MESSAGE "Set the Boost_INCLUDE_DIR cmake cache entry to the ${BOOST_INCLUDE_PATH_DESCRIPTION}")
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SET(BOOST_DIR_SEARCH $ENV{BOOST_ROOT})
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IF(BOOST_DIR_SEARCH)
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FILE(TO_CMAKE_PATH ${BOOST_DIR_SEARCH} BOOST_DIR_SEARCH)
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SET(BOOST_DIR_SEARCH ${BOOST_DIR_SEARCH}/include)
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ENDIF(BOOST_DIR_SEARCH)
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IF(WIN32)
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SET(BOOST_DIR_SEARCH
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${BOOST_DIR_SEARCH}
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C:/boost/include
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D:/boost/include
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)
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ENDIF(WIN32)
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# Add in some path suffixes. These will have to be updated whenever a new Boost version comes out.
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SET(SUFFIX_FOR_PATH
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boost-1_34_1
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boost-1_34_0
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boost-1_33_1
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boost-1_33_0
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)
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#
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# Look for an installation.
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#
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FIND_PATH(Boost_INCLUDE_DIR NAMES boost/config.hpp PATH_SUFFIXES ${SUFFIX_FOR_PATH} PATHS
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# Look in other places.
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${BOOST_DIR_SEARCH}
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# Help the user find it if we cannot.
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DOC "The ${BOOST_INCLUDE_PATH_DESCRIPTION}"
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)
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# Assume we didn't find it.
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SET(Boost_FOUND 0)
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# Now try to get the include and library path.
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IF(Boost_INCLUDE_DIR)
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# Look for the boost library path.
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# Note that the user may not have installed any libraries
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# so it is quite possible the Boost_LIBRARY_PATH may not exist.
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SET(Boost_LIBRARY_DIR ${Boost_INCLUDE_DIR})
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IF("${Boost_LIBRARY_DIR}" MATCHES "boost-[0-9]+")
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GET_FILENAME_COMPONENT(Boost_LIBRARY_DIR ${Boost_LIBRARY_DIR} PATH)
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ENDIF ("${Boost_LIBRARY_DIR}" MATCHES "boost-[0-9]+")
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IF("${Boost_LIBRARY_DIR}" MATCHES "/include$")
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# Strip off the trailing "/include" in the path.
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GET_FILENAME_COMPONENT(Boost_LIBRARY_DIR ${Boost_LIBRARY_DIR} PATH)
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ENDIF("${Boost_LIBRARY_DIR}" MATCHES "/include$")
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IF(EXISTS "${Boost_LIBRARY_DIR}/lib")
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SET (Boost_LIBRARY_DIR ${Boost_LIBRARY_DIR}/lib)
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ELSE(EXISTS "${Boost_LIBRARY_DIR}/lib")
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IF(EXISTS "${Boost_LIBRARY_DIR}/stage/lib")
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SET(Boost_LIBRARY_DIR ${Boost_LIBRARY_DIR}/stage/lib)
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ELSE(EXISTS "${Boost_LIBRARY_DIR}/stage/lib")
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SET(Boost_LIBRARY_DIR "")
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ENDIF(EXISTS "${Boost_LIBRARY_DIR}/stage/lib")
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ENDIF(EXISTS "${Boost_LIBRARY_DIR}/lib")
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IF(EXISTS "${Boost_INCLUDE_DIR}")
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SET(Boost_INCLUDE_DIRS ${Boost_INCLUDE_DIR})
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# We have found boost. It is possible that the user has not
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# compiled any libraries so we set Boost_FOUND to be true here.
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SET(Boost_FOUND 1)
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ENDIF(EXISTS "${Boost_INCLUDE_DIR}")
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IF(Boost_LIBRARY_DIR AND EXISTS "${Boost_LIBRARY_DIR}")
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SET(Boost_LIBRARY_DIRS ${Boost_LIBRARY_DIR})
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ENDIF(Boost_LIBRARY_DIR AND EXISTS "${Boost_LIBRARY_DIR}")
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ENDIF(Boost_INCLUDE_DIR)
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IF(NOT Boost_FOUND)
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IF(NOT Boost_FIND_QUIETLY)
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MESSAGE(STATUS "Boost was not found. ${BOOST_DIR_MESSAGE}")
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ELSE(NOT Boost_FIND_QUIETLY)
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IF(Boost_FIND_REQUIRED)
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MESSAGE(FATAL_ERROR "Boost was not found. ${BOOST_DIR_MESSAGE}")
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ENDIF(Boost_FIND_REQUIRED)
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ENDIF(NOT Boost_FIND_QUIETLY)
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ENDIF(NOT Boost_FOUND)
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