if (STATIC_BUILD OR NOT USE_SYSTEM_BOOST)
  set(BOOST_STATIC 1)
else()
  include(FindBoost)

  set(BOOST_STATIC 0)
  #set(Boost_DEBUG 1)
  #set(Boost_USE_STATIC_LIBS ON)

  find_package(Boost
    COMPONENTS filesystem thread system date_time regex locale ${ORTHANC_BOOST_COMPONENTS})

  if (NOT Boost_FOUND)
    message(FATAL_ERROR "Unable to locate Boost on this system")
  endif()

  # Boost releases 1.44 through 1.47 supply both V2 and V3 filesystem
  # http://www.boost.org/doc/libs/1_46_1/libs/filesystem/v3/doc/index.htm
  if (${Boost_VERSION} LESS 104400)
    add_definitions(
      -DBOOST_HAS_FILESYSTEM_V3=0
      )
  else()
    add_definitions(
      -DBOOST_HAS_FILESYSTEM_V3=1
      -DBOOST_FILESYSTEM_VERSION=3
      )
  endif()

  #if (${Boost_VERSION} LESS 104800)
  # boost::locale is only available from 1.48.00
  #message("Too old version of Boost (${Boost_LIB_VERSION}): Building the static version")
  #  set(BOOST_STATIC 1)
  #endif()

  include_directories(${Boost_INCLUDE_DIRS})
  link_libraries(${Boost_LIBRARIES})
endif()


if (BOOST_STATIC)
  # Parameters for Boost 1.64.0
  set(BOOST_NAME boost_1_64_0)
  set(BOOST_BCP_SUFFIX bcpdigest-1.2.1)
  set(BOOST_MD5 "ecb266cf46adcc7f695ad12685871174")
  set(BOOST_URL "http://www.orthanc-server.com/downloads/third-party/${BOOST_NAME}_${BOOST_BCP_SUFFIX}.tar.gz")
  set(BOOST_FILESYSTEM_SOURCES_DIR "${BOOST_NAME}/libs/filesystem/src") 
  set(BOOST_SOURCES_DIR ${CMAKE_BINARY_DIR}/${BOOST_NAME})

  DownloadPackage(${BOOST_MD5} ${BOOST_URL} "${BOOST_SOURCES_DIR}")

  set(BOOST_SOURCES)

  if (${CMAKE_SYSTEM_NAME} STREQUAL "Linux" OR
      ${CMAKE_SYSTEM_NAME} STREQUAL "Darwin" OR
      ${CMAKE_SYSTEM_NAME} STREQUAL "FreeBSD" OR
      ${CMAKE_SYSTEM_NAME} STREQUAL "kFreeBSD" OR
      ${CMAKE_SYSTEM_NAME} STREQUAL "PNaCl" OR
      ${CMAKE_SYSTEM_NAME} STREQUAL "NaCl32" OR
      ${CMAKE_SYSTEM_NAME} STREQUAL "NaCl64")
    list(APPEND BOOST_SOURCES
      ${BOOST_SOURCES_DIR}/libs/atomic/src/lockpool.cpp
      ${BOOST_SOURCES_DIR}/libs/thread/src/pthread/once.cpp
      ${BOOST_SOURCES_DIR}/libs/thread/src/pthread/thread.cpp
      )
    add_definitions(
      -DBOOST_LOCALE_WITH_ICONV=1
      -DBOOST_LOCALE_NO_WINAPI_BACKEND=1
      -DBOOST_LOCALE_NO_STD_BACKEND=1
      )

    if ("${CMAKE_SYSTEM_VERSION}" STREQUAL "LinuxStandardBase" OR
        ${CMAKE_SYSTEM_NAME} STREQUAL "PNaCl" OR
        ${CMAKE_SYSTEM_NAME} STREQUAL "NaCl32" OR
        ${CMAKE_SYSTEM_NAME} STREQUAL "NaCl64")
      add_definitions(-DBOOST_HAS_SCHED_YIELD=1)
    endif()

  elseif(${CMAKE_SYSTEM_NAME} STREQUAL "Windows")
    list(APPEND BOOST_SOURCES
      ${BOOST_SOURCES_DIR}/libs/thread/src/win32/tss_dll.cpp
      ${BOOST_SOURCES_DIR}/libs/thread/src/win32/thread.cpp
      ${BOOST_SOURCES_DIR}/libs/thread/src/win32/tss_pe.cpp
      ${BOOST_FILESYSTEM_SOURCES_DIR}/windows_file_codecvt.cpp
      )

    # Starting with release 0.8.2, Orthanc statically links against
    # libiconv, even on Windows. Indeed, the "WCONV" library of
    # Windows XP seems not to support properly several codepages
    # (notably "Latin3", "Hebrew", and "Arabic").

    if (USE_BOOST_ICONV)
      include(${ORTHANC_ROOT}/Resources/CMake/LibIconvConfiguration.cmake)
    else()
      add_definitions(-DBOOST_LOCALE_WITH_WCONV=1)
    endif()

    add_definitions(
      -DBOOST_LOCALE_NO_POSIX_BACKEND=1
      -DBOOST_LOCALE_NO_STD_BACKEND=1
      )

  elseif (${CMAKE_SYSTEM_NAME} STREQUAL "Emscripten")
    add_definitions(
      -DBOOST_LOCALE_NO_POSIX_BACKEND=1
      -DBOOST_LOCALE_NO_STD_BACKEND=1
      )

  else()
    message(FATAL_ERROR "Support your platform here")
  endif()

  if (${CMAKE_SYSTEM_NAME} STREQUAL "Darwin")
    list(APPEND BOOST_SOURCES
      ${BOOST_SOURCES_DIR}/libs/filesystem/src/utf8_codecvt_facet.cpp
      )
  endif()

  aux_source_directory(${BOOST_SOURCES_DIR}/libs/regex/src BOOST_REGEX_SOURCES)

  list(APPEND BOOST_SOURCES
    ${BOOST_REGEX_SOURCES}
    ${BOOST_SOURCES_DIR}/libs/date_time/src/gregorian/greg_month.cpp
    ${BOOST_SOURCES_DIR}/libs/system/src/error_code.cpp
    )

  if (NOT ${CMAKE_SYSTEM_NAME} STREQUAL "Emscripten")
    list(APPEND BOOST_SOURCES
      ${BOOST_SOURCES_DIR}/libs/locale/src/encoding/codepage.cpp
      )
  endif()

  if (${CMAKE_SYSTEM_NAME} STREQUAL "PNaCl" OR
      ${CMAKE_SYSTEM_NAME} STREQUAL "NaCl32" OR
      ${CMAKE_SYSTEM_NAME} STREQUAL "NaCl64")
    # boost::filesystem is not available on PNaCl
    add_definitions(
      -DBOOST_HAS_FILESYSTEM_V3=0
      -D__INTEGRITY=1
      )
  else()
    add_definitions(
      -DBOOST_HAS_FILESYSTEM_V3=1
      )
    list(APPEND BOOST_SOURCES
      ${BOOST_FILESYSTEM_SOURCES_DIR}/codecvt_error_category.cpp
      ${BOOST_FILESYSTEM_SOURCES_DIR}/operations.cpp
      ${BOOST_FILESYSTEM_SOURCES_DIR}/path.cpp
      ${BOOST_FILESYSTEM_SOURCES_DIR}/path_traits.cpp
      )
  endif()

  if (USE_BOOST_LOCALE_BACKEND)
    if (${CMAKE_SYSTEM_NAME} STREQUAL "Linux" OR
        ${CMAKE_SYSTEM_NAME} STREQUAL "Darwin" OR
        ${CMAKE_SYSTEM_NAME} STREQUAL "FreeBSD" OR
        ${CMAKE_SYSTEM_NAME} STREQUAL "kFreeBSD" OR
        ${CMAKE_SYSTEM_NAME} STREQUAL "PNaCl" OR
        ${CMAKE_SYSTEM_NAME} STREQUAL "NaCl32" OR
        ${CMAKE_SYSTEM_NAME} STREQUAL "NaCl64")
      list(APPEND BOOST_SOURCES
        ${BOOST_SOURCES_DIR}/libs/locale/src/posix/codecvt.cpp
        ${BOOST_SOURCES_DIR}/libs/locale/src/posix/collate.cpp
        ${BOOST_SOURCES_DIR}/libs/locale/src/posix/converter.cpp
        ${BOOST_SOURCES_DIR}/libs/locale/src/posix/numeric.cpp
        ${BOOST_SOURCES_DIR}/libs/locale/src/posix/posix_backend.cpp
        )
    elseif(${CMAKE_SYSTEM_NAME} STREQUAL "Windows")
      list(APPEND BOOST_SOURCES
        ${BOOST_SOURCES_DIR}/libs/locale/src/win32/collate.cpp
        ${BOOST_SOURCES_DIR}/libs/locale/src/win32/converter.cpp
        ${BOOST_SOURCES_DIR}/libs/locale/src/win32/lcid.cpp
        ${BOOST_SOURCES_DIR}/libs/locale/src/win32/numeric.cpp
        ${BOOST_SOURCES_DIR}/libs/locale/src/win32/win_backend.cpp
        )
    else()
      message(FATAL_ERROR "Support your platform here")
    endif()

    list(APPEND BOOST_SOURCES
      ${BOOST_REGEX_SOURCES}
      ${BOOST_SOURCES_DIR}/libs/date_time/src/gregorian/greg_month.cpp
      ${BOOST_SOURCES_DIR}/libs/system/src/error_code.cpp

      ${BOOST_FILESYSTEM_SOURCES_DIR}/codecvt_error_category.cpp
      ${BOOST_FILESYSTEM_SOURCES_DIR}/operations.cpp
      ${BOOST_FILESYSTEM_SOURCES_DIR}/path.cpp
      ${BOOST_FILESYSTEM_SOURCES_DIR}/path_traits.cpp

      ${BOOST_SOURCES_DIR}/libs/locale/src/shared/generator.cpp
      ${BOOST_SOURCES_DIR}/libs/locale/src/shared/date_time.cpp
      ${BOOST_SOURCES_DIR}/libs/locale/src/shared/formatting.cpp
      ${BOOST_SOURCES_DIR}/libs/locale/src/shared/ids.cpp
      ${BOOST_SOURCES_DIR}/libs/locale/src/shared/localization_backend.cpp
      ${BOOST_SOURCES_DIR}/libs/locale/src/shared/message.cpp
      ${BOOST_SOURCES_DIR}/libs/locale/src/shared/mo_lambda.cpp
      ${BOOST_SOURCES_DIR}/libs/locale/src/util/codecvt_converter.cpp
      ${BOOST_SOURCES_DIR}/libs/locale/src/util/default_locale.cpp
      ${BOOST_SOURCES_DIR}/libs/locale/src/util/gregorian.cpp
      ${BOOST_SOURCES_DIR}/libs/locale/src/util/info.cpp
      ${BOOST_SOURCES_DIR}/libs/locale/src/util/locale_data.cpp
      )        
  endif()

  add_definitions(
    # Static build of Boost
    -DBOOST_ALL_NO_LIB 
    -DBOOST_ALL_NOLIB 
    -DBOOST_DATE_TIME_NO_LIB 
    -DBOOST_THREAD_BUILD_LIB
    -DBOOST_PROGRAM_OPTIONS_NO_LIB
    -DBOOST_REGEX_NO_LIB
    -DBOOST_SYSTEM_NO_LIB
    -DBOOST_LOCALE_NO_LIB
    -DBOOST_HAS_LOCALE=1
    )

  if (CMAKE_COMPILER_IS_GNUCXX)
    add_definitions(-isystem ${BOOST_SOURCES_DIR})
  endif()

  include_directories(
    ${BOOST_SOURCES_DIR}
    )

  source_group(ThirdParty\\boost REGULAR_EXPRESSION ${BOOST_SOURCES_DIR}/.*)

else()
  add_definitions(
    -DBOOST_HAS_LOCALE=1
    )
endif()


add_definitions(
  -DBOOST_HAS_DATE_TIME=1
  -DBOOST_HAS_REGEX=1
  )