# This is the root OTB CMakeLists file.
# $Id$
#

PROJECT(OTB)

INCLUDE_REGULAR_EXPRESSION("^(otb|itk|vtk|vnl|vcl|vxl|f2c|netlib|ce|itpack|DICOM|meta|png|dbh|tif|jpeg|zlib).*$")
SOURCE_GROUP("XML Files" REGULAR_EXPRESSION "[.]xml$")

# On Visual Studio 8 MS deprecated C. This removes all 1.276E1265 security
# warnings
IF(WIN32)
  IF(NOT BORLAND)
    IF(NOT CYGWIN)
      IF(NOT MINGW)
        IF(NOT ITK_ENABLE_VISUAL_STUDIO_DEPRECATED_C_WARNINGS)
          ADD_DEFINITIONS(
            -D_CRT_FAR_MAPPINGS_NO_DEPRECATE
            -D_CRT_IS_WCTYPE_NO_DEPRECATE
            -D_CRT_MANAGED_FP_NO_DEPRECATE
            -D_CRT_NONSTDC_NO_DEPRECATE
            -D_CRT_SECURE_NO_DEPRECATE
            -D_CRT_SECURE_NO_DEPRECATE_GLOBALS
            -D_CRT_SETERRORMODE_BEEP_SLEEP_NO_DEPRECATE
            -D_CRT_TIME_FUNCTIONS_NO_DEPRECATE
            -D_CRT_VCCLRIT_NO_DEPRECATE
            -D_SCL_SECURE_NO_DEPRECATE
            )
        ENDIF(NOT ITK_ENABLE_VISUAL_STUDIO_DEPRECATED_C_WARNINGS)
      ENDIF(NOT MINGW)
    ENDIF(NOT CYGWIN)
  ENDIF(NOT BORLAND)
ENDIF(WIN32)

# Don't build anything unless the version of CMake is high enough.
# The matching ELSE/ENDIF should be the last lines in the file.
IF("${CMAKE_MAJOR_VERSION}.${CMAKE_MINOR_VERSION}" GREATER 1.7)

# If CMake is the version we're expecting, don't show the
# CMAKE_BACKWARDS_COMPATIBILITY option.
IF("${CMAKE_MAJOR_VERSION}.${CMAKE_MINOR_VERSION}" MATCHES "^1\\.8$")
  MARK_AS_ADVANCED(FORCE CMAKE_BACKWARDS_COMPATIBILITY)
ELSE("${CMAKE_MAJOR_VERSION}.${CMAKE_MINOR_VERSION}" MATCHES "^1\\.8$")
  MARK_AS_ADVANCED(CLEAR CMAKE_BACKWARDS_COMPATIBILITY)
ENDIF("${CMAKE_MAJOR_VERSION}.${CMAKE_MINOR_VERSION}" MATCHES "^1\\.8$")

#-----------------------------------------------------------------------------
# OTB option to access large file (> 4Go).
ADD_DEFINITIONS(
	-D_LARGEFILE_SOURCE
	-D_FILE_OFFSET_BITS=64
	-D_LARGEFILE64_SOURCE
	-D_LARGE_FILES 
	)

#-----------------------------------------------------------------------------
# OTB version number.  An even minor number corresponds to releases.
SET(OTB_VERSION_MAJOR "2")
SET(OTB_VERSION_MINOR "0")
SET(OTB_VERSION_PATCH "0")

# Version string should not include patch level.  The major.minor is
# enough to distinguish available features of the toolkit.
SET(OTB_VERSION_STRING "${OTB_VERSION_MAJOR}.${OTB_VERSION_MINOR}.${OTB_VERSION_PATCH}")

#-----------------------------------------------------------------------------
# RECHERCHE DES LIBRAIRIES EXTERNES UTILISEES

#-------------------------------
# Librairie ITK
#-------------------------------

OPTION(OTB_USE_EXTERNAL_ITK "Use an outside build of ITK." OFF)
IF(OTB_USE_EXTERNAL_ITK)
	FIND_PACKAGE(ITK)
	IF(ITK_FOUND)
  		INCLUDE(${ITK_USE_FILE})
 	ELSE(ITK_FOUND)
  		MESSAGE(FATAL_ERROR
          	"Cannot build OTB project without ITK.  Please set ITK_DIR or set OTB_USE_EXTERNAL_ITK OFF to use INTERNAL ITK set on OTB/Utilities repository.")
        ENDIF(ITK_FOUND)
ENDIF(OTB_USE_EXTERNAL_ITK)


#-------------------------------
# Librairie GDAL
#-------------------------------

#FIND_LIBRARY(GDAL_LIBRARY_DIRS gdal PATHS $ENV{GDAL_LIBRARY_DIRS} ) 
FIND_PATH(GDAL_LIBRARY_DIRS gdal PATHS $ENV{GDAL_LIBRARY_DIRS} )
FIND_PATH(GDAL_INCLUDE_DIRS gdal.h $ENV{GDAL_INCLUDE_DIRS} /usr/include/gdal)
IF (NOT GDAL_LIBRARY_DIRS)
MESSAGE(FATAL_ERROR
	  "Cannot find GDAL library directory. Please set GDAL_LIBRARY_DIRS.")
ENDIF (NOT GDAL_LIBRARY_DIRS)
IF (NOT GDAL_INCLUDE_DIRS)
MESSAGE(FATAL_ERROR
	  "Cannot find GDAL include directory. Please set GDAL_INCLUDE_DIRS.")
ENDIF (NOT GDAL_INCLUDE_DIRS)


INCLUDE_DIRECTORIES(${GDAL_INCLUDE_DIRS})

LINK_DIRECTORIES( ${GDAL_LIBRARY_DIRS} )

#-----------------------------------------------------------------------------
# Option for generate Visu tools !!!
OPTION(OTB_USE_VISU_GUI "Generate Gui/Visu tools directory. If ON, find OpenGL and FLTK package." ON)
MARK_AS_ADVANCED(OTB_USE_VISU_GUI)
IF(OTB_USE_VISU_GUI)

        #-------------------------------
        # Librairie OpenGL
        #-------------------------------
        FIND_PACKAGE(OpenGL)
        IF(OPENGL_INCLUDE_PATH)
                INCLUDE_DIRECTORIES(${OPENGL_INCLUDE_PATH})
        ENDIF(OPENGL_INCLUDE_PATH)

        #-------------------------------
        # Librairie FLTK
        #-------------------------------
        # Add an option to use or not use FLTK (http://www.fltk.org)

#         SET(CMAKE_MODULE_PATH "/usr/share/CMake")
#         SET( FLTK_INCLUDE_DIR /usr/include )

        FIND_PACKAGE(FLTK)
        IF (NOT FLTK_INCLUDE_DIR)
		SET( FLTK_INCLUDE_DIR /usr/include )
		FIND_PACKAGE(FLTK)
	ENDIF(NOT FLTK_INCLUDE_DIR)

        IF(FLTK_FOUND)
		INCLUDE_DIRECTORIES(${FLTK_INCLUDE_DIRS})
		LINK_DIRECTORIES(${FLTK_LIBRARY_DIRS})
        ELSE(FLTK_FOUND)
           MESSAGE(FATAL_ERROR
	         "Cannot build OTB project without FLTK.  Please set FLTK_DIR or set OTB_USE_VISU to OFF.")
        ENDIF(FLTK_FOUND)

ENDIF(OTB_USE_VISU_GUI)



#-------------------------------
# End connections whith external libraries
#-------------------------------

# The fluid-generated fltk sources have many warnings.  This macro
# will disable warnings for the generated files on some compilers.
MACRO(OTB_DISABLE_FLTK_GENERATED_WARNINGS files)
  IF(${CMAKE_MAJOR_VERSION}.${CMAKE_MINOR_VERSION} GREATER 1.6)
    IF(CMAKE_COMPILER_IS_GNUCXX)
      FOREACH(f ${files})
        STRING(REGEX REPLACE "\\.fl$" ".cxx" SRC "${f}")
        STRING(REGEX REPLACE ".*/([^/]*)$" "\\1" SRC "${SRC}")
        SET_SOURCE_FILES_PROPERTIES(${SRC} PROPERTIES COMPILE_FLAGS -w)
      ENDFOREACH(f)
    ENDIF(CMAKE_COMPILER_IS_GNUCXX)
  ENDIF(${CMAKE_MAJOR_VERSION}.${CMAKE_MINOR_VERSION} GREATER 1.6)
ENDMACRO(OTB_DISABLE_FLTK_GENERATED_WARNINGS)

# Macro for adding resources to GUI application on the Mac
#
IF(APPLE AND NOT FLTK_USE_X)
    FIND_PROGRAM(ITK_APPLE_RESOURCE Rez /Developer/Tools)
    FIND_FILE(ITK_FLTK_RESOURCE mac.r /usr/local/include/FL)
    IF(NOT ITK_FLTK_RESOURCE)
      MESSAGE("Fltk resources not found, GUI application will not respond to mouse events")
    ENDIF(NOT ITK_FLTK_RESOURCE)

    MACRO(ADD_GUI_EXECUTABLE name sources)
      ADD_EXECUTABLE(${name} ${sources})
      INSTALL_TARGETS(/bin ${name})
      SET(EXEC_PATH ${EXECUTABLE_OUTPUT_PATH})
      IF(NOT EXEC_PATH)
        SET(EXEC_PATH ${CMAKE_CURRENT_BINARY_DIR})
      ENDIF(NOT EXEC_PATH)
        IF(ITK_APPLE_RESOURCE)
          ADD_CUSTOM_COMMAND(SOURCE ${name}
                             COMMAND ${ITK_APPLE_RESOURCE}
                             ARGS -t APPL ${ITK_FLTK_RESOURCE} -o
                             ${EXEC_PATH}/${name}
                             TARGET ${name})
        ENDIF(ITK_APPLE_RESOURCE)
    ENDMACRO(ADD_GUI_EXECUTABLE)
ELSE(APPLE AND NOT FLTK_USE_X)
  MACRO(ADD_GUI_EXECUTABLE name sources)
    ADD_EXECUTABLE(${name} ${sources})
    INSTALL_TARGETS(/bin ${name})
  ENDMACRO(ADD_GUI_EXECUTABLE)
ENDIF(APPLE AND NOT FLTK_USE_X)


INCLUDE_DIRECTORIES (
  ${OTB_BINARY_DIR} 
  ${OTB_SOURCE_DIR}
)

INCLUDE_DIRECTORIES( ${OTB_INCLUDE_DIRS} )


#-----------------------------------------------------------------------------
# Test for some required system information.
INCLUDE (${CMAKE_ROOT}/Modules/CMakeBackwardCompatibilityC.cmake)
INCLUDE (${CMAKE_ROOT}/Modules/CMakeBackwardCompatibilityCXX.cmake)

#-----------------------------------------------------------------------------
# Configure Dart testing support.  This should be done before any
# MESSAGE(FATAL_ERROR ...) commands are invoked.
INCLUDE(${CMAKE_ROOT}/Modules/Dart.cmake)
MARK_AS_ADVANCED(TCL_TCLSH DART_ROOT)
IF(BUILD_TESTING)
  ENABLE_TESTING()
  SET(BUILDNAME "${BUILDNAME}" CACHE STRING "Name of build on the dashboard")
  MARK_AS_ADVANCED(BUILDNAME)
ENDIF(BUILD_TESTING)



#-----------------------------------------------------------------------------
# Output directories.


IF(NOT LIBRARY_OUTPUT_PATH)
   SET (LIBRARY_OUTPUT_PATH ${OTB_BINARY_DIR}/bin CACHE INTERNAL "Single output directory for building all libraries.")
ENDIF(NOT LIBRARY_OUTPUT_PATH)
IF(NOT EXECUTABLE_OUTPUT_PATH)
   SET (EXECUTABLE_OUTPUT_PATH ${OTB_BINARY_DIR}/bin CACHE INTERNAL "Single output directory for building all executables.")
ENDIF(NOT EXECUTABLE_OUTPUT_PATH)

IF(NOT OTB_NO_LIBRARY_VERSION)
   # This setting of SOVERSION assumes that any API change
   # will increment either the minor or major version number of OTB.
   SET(OTB_LIBRARY_PROPERTIES 
       VERSION   "${OTB_VERSION_MAJOR}.${OTB_VERSION_MINOR}.${OTB_VERSION_PATCH}"
       SOVERSION "${OTB_VERSION_MAJOR}.${OTB_VERSION_MINOR}")
ENDIF(NOT OTB_NO_LIBRARY_VERSION)




MARK_AS_ADVANCED(LIBRARY_OUTPUT_PATH EXECUTABLE_OUTPUT_PATH)

SET(OTB_LIBRARY_PATH "${LIBRARY_OUTPUT_PATH}")
SET(OTB_EXECUTABLE_PATH "${EXECUTABLE_OUTPUT_PATH}")
SET(CXX_TEST_PATH ${EXECUTABLE_OUTPUT_PATH})

INCLUDE_DIRECTORIES( ${OTB_LIBRARY_PATH} )

# Put "." in the rpath of all OTB shared libraries.
LINK_DIRECTORIES(.)

#-----------------------------------------------------------------------------
# OTB build configuration options.
OPTION(BUILD_SHARED_LIBS "Build OTB with shared libraries." ON)
SET(OTB_BUILD_SHARED_LIBS ${BUILD_SHARED_LIBS})

# Options for building some of the most common core templates explicitly only
# once.  This has only been tested on gcc compilers.
OPTION(OTB_EXPLICIT_INSTANTIATION "BETA-Try to explicitly build some of the core templates explictitly rather than over and over again." OFF)
MARK_AS_ADVANCED(OTB_EXPLICIT_INSTANTIATION)
IF( OTB_EXPLICIT_INSTANTIATION )
 ADD_DEFINITIONS(-DOTB_EXPLICIT_INSTANTIATION)
ENDIF( OTB_EXPLICIT_INSTANTIATION )

#-----------------------------------------------------------------------------
# Option for display all developpment message !!!
OPTION(OTB_SHOW_ALL_MSG_DEBUG "OTB developers : Show all messages (debug, dev, etc...) use only for otb developers." OFF)
MARK_AS_ADVANCED(OTB_SHOW_ALL_MSG_DEBUG)
IF( OTB_SHOW_ALL_MSG_DEBUG )
 ADD_DEFINITIONS(-DOTB_ACTIVE_MSG_DEV_MACRO)
ENDIF( OTB_SHOW_ALL_MSG_DEBUG )

#-----------------------------------------------------------------------------
# Option for disable example testing
OPTION(OTB_DISABLE_CXX_EXAMPLES_TESTING "Disable examples testing." OFF)
MARK_AS_ADVANCED(OTB_DISABLE_CXX_EXAMPLES_TESTING)

#-----------------------------------------------------------------------------
# Advanced option to avoid recompiling utilities at each cmake reconfiguration
OPTION(OTB_DISABLE_UTILITIES_COMPILATION "Disable utilities compilation (developpers only - use at you own risk)" OFF)
MARK_AS_ADVANCED(OTB_DISABLE_UTILITIES_COMPILATION)

IF(OTB_DISABLE_UTILITIES_COMPILATION)
MESSAGE("Warning: utilities compilation is disabled.")
LINK_DIRECTORIES("${OTB_BINARY_DIR}/bin")
ENDIF(OTB_DISABLE_UTILITIES_COMPILATION)


#-----------------------------------------------------------------------------
# Option to define streaming activation in applications
# Use by otbConfigure.h.in
SET(OTB_STREAM_IMAGE_SIZE_TO_ACTIVATE_STREAMING 8*4000*4000 CACHE STRING "Image size to activate using streaming for applications.")
MARK_AS_ADVANCED(OTB_STREAM_IMAGE_SIZE_TO_ACTIVATE_STREAMING)
SET(OTB_STREAM_MAX_SIZE_BUFFER_FOR_STREAMING 8*4000*4000 CACHE STRING "Max size buffer for streaming.")
MARK_AS_ADVANCED(OTB_STREAM_MAX_SIZE_BUFFER_FOR_STREAMING)



#-----------------------------------------------------------------------------
# Perform a setup of OTB Wrapping. This will provide CMake options for
# individual wrapping as well as determine if CableSwig is required. If it is,
# OTB_NEED_CableSwig will be set. This file also tries to locate CableSwig by
# searching first in the source tree of OTB, and if that fails, it searches
# for a binary built of CableSwig.
#
INCLUDE(${OTB_SOURCE_DIR}/Wrapping/otbWrapSetup.cmake)


#-----------------------------------------------------------------------------
# Option for generate Patented examples  !!!
OPTION(OTB_USE_PATENTED "Build patented examples. ITK must be genereted whith patented option (ITK_USE_PATENTED = ON)." OFF)
MARK_AS_ADVANCED(OTB_USE_PATENTED)


IF(WIN32)
   IF(BUILD_SHARED_LIBS)
     SET(OTB_COMMON_BUILD_TYPE "SHARED")
   ELSE(BUILD_SHARED_LIBS)
     SET(OTB_COMMON_BUILD_TYPE "STATIC")
   ENDIF(BUILD_SHARED_LIBS)
   SET(BUILD_SHARED_LIBS OFF)
ENDIF(WIN32)


OPTION(BUILD_EXAMPLES "Build the Examples directory." OFF)
OPTION(BUILD_TESTING "Build testing." OFF)

#-----------------------------------------------------------------------------
# Dispatch the build into the proper subdirectories.
SUBDIRS(Utilities Code)

SUBDIRS(Wrapping)


IF (BUILD_EXAMPLES)
  SUBDIRS(Examples)
ENDIF (BUILD_EXAMPLES)

IF (BUILD_TESTING)
  SUBDIRS(Testing)
ENDIF (BUILD_TESTING)

#-----------------------------------------------------------------------------
# OTB requires special compiler flags on some platforms.
IF(CMAKE_COMPILER_IS_GNUCXX)
  SET(OTB_REQUIRED_CXX_FLAGS "${OTB_REQUIRED_CXX_FLAGS} -ftemplate-depth-50")
  IF(APPLE)
    SET(OTB_REQUIRED_C_FLAGS "${OTB_REQUIRED_C_FLAGS} -no-cpp-precomp")
    SET(OTB_REQUIRED_CXX_FLAGS "${OTB_REQUIRED_CXX_FLAGS} -no-cpp-precomp")
    SET(OTB_REQUIRED_CXX_FLAGS "${OTB_REQUIRED_CXX_FLAGS} -Wno-long-double")
  ENDIF(APPLE)
ENDIF(CMAKE_COMPILER_IS_GNUCXX)

IF(UNIX)
  IF(NOT CMAKE_COMPILER_IS_GNUCXX)
    INCLUDE(${OTB_SOURCE_DIR}/CMake/TestNO_ICC_IDYNAMIC_NEEDED.cmake)
    TESTNO_ICC_IDYNAMIC_NEEDED(NO_ICC_IDYNAMIC_NEEDED ${OTB_SOURCE_DIR}/CMake )
    IF(NO_ICC_IDYNAMIC_NEEDED)
      SET(OTB_REQUIRED_CXX_FLAGS "${OTB_REQUIRED_CXX_FLAGS}")
    ELSE(NO_ICC_IDYNAMIC_NEEDED)
      SET(OTB_REQUIRED_CXX_FLAGS "${OTB_REQUIRED_CXX_FLAGS} -i_dynamic")
    ENDIF(NO_ICC_IDYNAMIC_NEEDED)
  ENDIF(NOT CMAKE_COMPILER_IS_GNUCXX)
ENDIF(UNIX)

# Force the use of ansi cxx flags (i.e. -LANG:std on sgi )
IF("x${CMAKE_ANSI_CXXFLAGS}" MATCHES "^x.*[^ ]")
  SET(OTB_REQUIRED_CXX_FLAGS "${OTB_REQUIRED_CXX_FLAGS} ${CMAKE_ANSI_CXXFLAGS}")
ENDIF("x${CMAKE_ANSI_CXXFLAGS}" MATCHES "^x.*[^ ]")
IF("x${CMAKE_ANSI_CFLAGS}" MATCHES "^x.*[^ ]")
  SET(OTB_REQUIRED_C_FLAGS "${OTB_REQUIRED_C_FLAGS} ${CMAKE_ANSI_CFLAGS}")
ENDIF("x${CMAKE_ANSI_CFLAGS}" MATCHES "^x.*[^ ]")

IF(CMAKE_SYSTEM MATCHES "IRIX.*")
  IF(NOT CMAKE_COMPILER_IS_GNUCXX)
    SET(OTB_REQUIRED_CXX_FLAGS "${OTB_REQUIRED_CXX_FLAGS} -woff 15,84,1110,1209,1424,1468,3102,3210,3439  -no_auto_include -ptused -no_prelink")
    SET(OTB_REQUIRED_LINK_FLAGS "${OTB_REQUIRED_LINK_FLAGS}  -Wl,-woff15")
  ENDIF(NOT CMAKE_COMPILER_IS_GNUCXX)
ENDIF(CMAKE_SYSTEM MATCHES "IRIX.*")

IF(MINGW)
  LINK_LIBRARIES(gdi32)
ENDIF(MINGW)

# for the gnu compiler a -D_PTHREADS is needed on sun
# for the native compiler a -mt flag is needed on the sun
IF(CMAKE_USE_PTHREADS)
  IF(CMAKE_SYSTEM MATCHES "SunOS.*")
    IF(CMAKE_COMPILER_IS_GNUCXX)
      SET(OTB_REQUIRED_CXX_FLAGS "${OTB_REQUIRED_CXX_FLAGS} -D_PTHREADS")
    ELSE(CMAKE_COMPILER_IS_GNUCXX)
      SET(OTB_REQUIRED_CXX_FLAGS "${OTB_REQUIRED_CXX_FLAGS} -mt")
      SET(OTB_REQUIRED_C_FLAGS "${OTB_REQUIRED_C_FLAGS} -mt")
    ENDIF(CMAKE_COMPILER_IS_GNUCXX)
  ENDIF(CMAKE_SYSTEM MATCHES "SunOS.*")
ENDIF(CMAKE_USE_PTHREADS)

IF(WIN32)
  SET(OTB_REQUIRED_CXX_FLAGS "${OTB_REQUIRED_CXX_FLAGS} -DNOMINMAX")
ENDIF(WIN32)

#-----------------------------------------------------------------------------
# Test for an Objective-C++ compiler.
SET(OTB_OBJCXX_COMPILER_WORKS 0)
IF(APPLE)
  TRY_COMPILE(OTB_OBJCXX_COMPILER_WORKS
              ${OTB_BINARY_DIR}/CMakeTmp
              ${OTB_SOURCE_DIR}/CMake/otbTestObjCxxCompiler.mm
              OUTPUT_VARIABLE OTB_OBJCXX_TRY_COMPILE_OUTPUT)
  IF( OTB_OBJCXX_COMPILER_WORKS )
    FILE(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeOutput.log
        "Determining if the Objective-C compiler works passed with "
        "the following output:\n${OTB_OBJCXX_TRY_COMPILE_OUTPUT}\n\n")
  ELSE( OTB_OBJCXX_COMPILER_WORKS )
    FILE(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeError.log
      "Determining if the Objective-C compiler works failed with "
      "the following output:\n${OTB_OBJCXX_TRY_COMPILE_OUTPUT}\n\n")
  ENDIF( OTB_OBJCXX_COMPILER_WORKS )
ENDIF(APPLE)
#-----------------------------------------------------------------------------
# mingw thread support
IF(MINGW)
  SET(OTB_REQUIRED_CXX_FLAGS "${OTB_REQUIRED_CXX_FLAGS} -mthreads")
  SET(OTB_REQUIRED_C_FLAGS "${OTB_REQUIRED_C_FLAGS} -mthreads")
  SET(OTB_REQUIRED_LINK_FLAGS "${OTB_REQUIRED_LINK_FLAGS} -mthreads")
ENDIF(MINGW)


#-----------------------------------------------------------------------------
#
# See if compiler preprocessor has the __FUNCTION__ directive used by itkExceptionMacro
#
INCLUDE(${OTB_SOURCE_DIR}/CMake/CheckCPPDirective.cmake)
CHECK_CPP_DIRECTIVE_EXISTS(__FUNCTION__ ITK_CPP_FUNCTION)


#-----------------------------------------------------------------------------
# Find platform-specific differences in the handling of IEEE floating point 
# special values.
INCLUDE(${OTB_SOURCE_DIR}/CMake/CheckBigBitfield.cmake)
CHECK_BIG_BITFIELD(BIGBITFIELD_VALUE ${OTB_SOURCE_DIR}/CMake)
IF(BIGBITFIELD_VALUE)
   SET(BIGBITFIELD 1 CACHE INTERNAL "System handles bit-fields larger than 32 bits.")
ELSE(BIGBITFIELD_VALUE)
   SET(BIGBITFIELD 0 CACHE INTERNAL "System handles bit-fields larger than 32 bits.")
ENDIF(BIGBITFIELD_VALUE)

INCLUDE(${OTB_SOURCE_DIR}/CMake/TestQnanhibit.cmake)
TEST_QNANHIBIT(QNANHIBIT_VALUE ${OTB_SOURCE_DIR}/CMake)
IF(QNANHIBIT_VALUE)
   SET(QNANHIBIT 1 CACHE INTERNAL "The 22nd bit of 32-bit floating-point quiet NaN.")
ELSE(QNANHIBIT_VALUE)
   SET(QNANHIBIT 0 CACHE INTERNAL "The 22nd bit of 32-bit floating-point quiet NaN.")
ENDIF(QNANHIBIT_VALUE)

IF("${CMAKE_MAJOR_VERSION}.${CMAKE_MINOR_VERSION}" LESS 2.0)
ELSE("${CMAKE_MAJOR_VERSION}.${CMAKE_MINOR_VERSION}" LESS 2.0)
INCLUDE(CheckTypeSize)
ENDIF("${CMAKE_MAJOR_VERSION}.${CMAKE_MINOR_VERSION}" LESS 2.0)

CHECK_TYPE_SIZE("long long" OTB_SIZEOF_LONG_LONG)
CHECK_TYPE_SIZE("__int64"   OTB_SIZEOF___INT64)

IF(OTB_SIZEOF___INT64)
  IF("OTB_TYPE_SAME_LONG_AND___INT64" MATCHES "^OTB_TYPE_SAME_LONG_AND___INT64$")
    MESSAGE(STATUS "Checking whether long and __int64 are the same type")
    TRY_COMPILE(OTB_TYPE_SAME_LONG_AND___INT64
      ${OTB_BINARY_DIR}/CMakeTmp
      ${OTB_SOURCE_DIR}/CMake/otbTestCompareTypes.cxx
      COMPILE_DEFINITIONS
      -DOTB_TEST_COMPARE_TYPE_1=long
      -DOTB_TEST_COMPARE_TYPE_2=__int64
      OUTPUT_VARIABLE OUTPUT)
    IF(OTB_TYPE_SAME_LONG_AND___INT64)
      MESSAGE(STATUS "Checking whether long and __int64 are the same type -- yes")
      SET(OTB_TYPE_SAME_LONG_AND___INT64 1 CACHE INTERNAL "Whether long and __int64 are the same type")
    ELSE(OTB_TYPE_SAME_LONG_AND___INT64)
      MESSAGE(STATUS "Checking whether long and __int64 are the same type -- no")
      SET(OTB_TYPE_SAME_LONG_AND___INT64 0 CACHE INTERNAL "Whether long and __int64 are the same type")
      WRITE_FILE(${CMAKE_BINARY_DIR}/CMakeError.log
        "Determining whether long and __int64 are the same type "
        "failed with the following output:\n"
        "${OUTPUT}\n" APPEND)
    ENDIF(OTB_TYPE_SAME_LONG_AND___INT64)
  ENDIF("OTB_TYPE_SAME_LONG_AND___INT64" MATCHES "^OTB_TYPE_SAME_LONG_AND___INT64$")
ENDIF(OTB_SIZEOF___INT64)

IF(OTB_SIZEOF_LONG_LONG)
  CONFIGURE_FILE(${OTB_SOURCE_DIR}/CMake/otbTestStreamLongLong.cxx.in
    ${OTB_BINARY_DIR}/otbTestStreamLongLong.cxx @ONLY IMMEDIATE)
  IF("OTB_OSTREAM_SUPPORTS_LONG_LONG" MATCHES "^OTB_OSTREAM_SUPPORTS_LONG_LONG$")
    MESSAGE(STATUS "Checking if ostream supports long long")
    TRY_COMPILE(OTB_OSTREAM_SUPPORTS_LONG_LONG
      ${OTB_BINARY_DIR}
      ${OTB_BINARY_DIR}/otbTestStreamLongLong.cxx
      COMPILE_DEFINITIONS -DOTB_TEST_OSTREAM_LONG_LONG
      OUTPUT_VARIABLE OUTPUT)
    IF(OTB_OSTREAM_SUPPORTS_LONG_LONG)
      MESSAGE(STATUS "Checking if ostream supports long long -- yes")
      SET(OTB_OSTREAM_SUPPORTS_LONG_LONG 1 CACHE INTERNAL "Whether ostream supports long long")
    ELSE(OTB_OSTREAM_SUPPORTS_LONG_LONG)
      MESSAGE(STATUS "Checking if ostream supports long long -- no")
      SET(OTB_OSTREAM_SUPPORTS_LONG_LONG 0 CACHE INTERNAL "Whether ostream supports long long")
      WRITE_FILE(${CMAKE_BINARY_DIR}/CMakeError.log
        "Determining if ostream supports long long "
        "failed with the following output:\n"
        "${OUTPUT}\n" APPEND)
    ENDIF(OTB_OSTREAM_SUPPORTS_LONG_LONG)
  ENDIF("OTB_OSTREAM_SUPPORTS_LONG_LONG" MATCHES "^OTB_OSTREAM_SUPPORTS_LONG_LONG$")
  IF("OTB_ISTREAM_SUPPORTS_LONG_LONG" MATCHES "^OTB_ISTREAM_SUPPORTS_LONG_LONG$")
    MESSAGE(STATUS "Checking if istream supports long long")
    TRY_COMPILE(OTB_ISTREAM_SUPPORTS_LONG_LONG
      ${OTB_BINARY_DIR}
      ${OTB_BINARY_DIR}/otbTestStreamLongLong.cxx
      COMPILE_DEFINITIONS -DOTB_TEST_ISTREAM_LONG_LONG
      OUTPUT_VARIABLE OUTPUT)
    IF(OTB_ISTREAM_SUPPORTS_LONG_LONG)
      MESSAGE(STATUS "Checking if istream supports long long -- yes")
      SET(OTB_ISTREAM_SUPPORTS_LONG_LONG 1 CACHE INTERNAL "Whether istream supports long long")
    ELSE(OTB_ISTREAM_SUPPORTS_LONG_LONG)
      MESSAGE(STATUS "Checking if istream supports long long -- no")
      SET(OTB_ISTREAM_SUPPORTS_LONG_LONG 0 CACHE INTERNAL "Whether istream supports long long")
      WRITE_FILE(${CMAKE_BINARY_DIR}/CMakeError.log
        "Determining if istream supports long long "
        "failed with the following output:\n"
        "${OUTPUT}\n" APPEND)
    ENDIF(OTB_ISTREAM_SUPPORTS_LONG_LONG)
  ENDIF("OTB_ISTREAM_SUPPORTS_LONG_LONG" MATCHES "^OTB_ISTREAM_SUPPORTS_LONG_LONG$")
ENDIF(OTB_SIZEOF_LONG_LONG)


#-----------------------------------------------------------------------------
# Configure the default OTB_DATA_ROOT for the location of OTB Data.
FIND_PATH(OTB_DATA_ROOT OTBData.readme $ENV{OTB_DATA_ROOT})
MARK_AS_ADVANCED(OTB_DATA_ROOT)


#-----------------------------------------------------------------------------
# Configure files with settings for use by the build.
CONFIGURE_FILE(${OTB_SOURCE_DIR}/otbConfigure.h.in 
               ${OTB_BINARY_DIR}/otbConfigure.h)

#-----------------------------------------------------------------------------
# The entire OTB tree should use the same include path, except for the
# Wrapping directory.

# Create the list of include directories needed for OTB header files.
INCLUDE(${OTB_SOURCE_DIR}/otbIncludeDirectories.cmake)

# This should be the only INCLUDE_DIRECTORIES command in the entire
# tree, except for the Utilities and Wrapping directories.  We need to
# do this in one place to make sure the order is correct.
INCLUDE_DIRECTORIES(
  ${OTB_INCLUDE_DIRS_BUILD_TREE}
  ${OTB_INCLUDE_DIRS_BUILD_TREE_CXX}
  ${OTB_INCLUDE_DIRS_SYSTEM}
)

#-----------------------------------------------------------------------------
# Uninstall cmake use to uninstall OTB.
CONFIGURE_FILE(
  "${CMAKE_CURRENT_SOURCE_DIR}/CMake/cmake_uninstall.cmake.in"
  "${CMAKE_CURRENT_BINARY_DIR}/cmake_uninstall.cmake"
  IMMEDIATE @ONLY)

ADD_CUSTOM_TARGET(uninstall
  "${CMAKE_COMMAND}" -P "${CMAKE_CURRENT_BINARY_DIR}/cmake_uninstall.cmake")

#-----------------------------------------------------------------------------
# Help other projects use OTB.

# Copy the UseOTB.cmake file to the binary tree for backward compatability.
CONFIGURE_FILE(${OTB_SOURCE_DIR}/UseOTB.cmake.in
               ${OTB_BINARY_DIR}/UseOTB.cmake COPYONLY IMMEDIATE)

# Save the compiler settings so another project can import them.
INCLUDE(${CMAKE_ROOT}/Modules/CMakeExportBuildSettings.cmake)
CMAKE_EXPORT_BUILD_SETTINGS(${OTB_BINARY_DIR}/OTBBuildSettings.cmake)
INSTALL_FILES(/lib/otb .cmake OTBBuildSettings)

# Save library dependencies.
EXPORT_LIBRARY_DEPENDENCIES(${OTB_BINARY_DIR}/OTBLibraryDepends.cmake)

# Create the OTBConfig.cmake file containing the OTB configuration.
INCLUDE (${OTB_SOURCE_DIR}/otbGenerateOTBConfig.cmake)


# Install some files.
INSTALL_FILES(/include/otb .h otbConfigure)
INSTALL_FILES(/lib/otb .cmake UseOTB OTBLibraryDepends OTBConfig )

#-----------------------------------------------------------------------------
# Add compiler flags OTB needs to work on this platform.  This must be
# done AFTER the call to CMAKE_EXPORT_BUILD_SETTINGS.

SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${OTB_REQUIRED_C_FLAGS}")
SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${OTB_REQUIRED_CXX_FLAGS}")
SET(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} ${OTB_REQUIRED_LINK_FLAGS}")
SET(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} ${OTB_REQUIRED_LINK_FLAGS}")
SET(CMAKE_MODULE_LINKER_FLAGS "${CMAKE_MODULE_LINKER_FLAGS} ${OTB_REQUIRED_LINK_FLAGS}")

#-----------------------------------------------------------------------------
# The frename-registers option does not work due to a bug in the gnu compiler.
# It must be removed or data errors will be produced and incorrect results
# will be produced.  This is first documented in the gcc4 man page.
IF(CMAKE_COMPILER_IS_GNUCXX)
  SET(ALL_FLAGS "${CMAKE_C_FLAGS} ${CMAKE_CXX_FLAGS} ${CMAKE_EXE_LINKER_FLAGS} ${CMAKE_SHARED_LINKER_FLAGS} ${CMAKE_MODULE_LINKER_FLAGS}" )
  SEPARATE_ARGUMENTS(ALL_FLAGS)
  FOREACH(COMP_OPTION ${ALL_FLAGS})
    #  MESSAGE("${COMP_OPTION} being checked.")
    IF("${COMP_OPTION}" STREQUAL "-frename-registers")
      MESSAGE(FATAL_ERROR "-frename-registers causes runtime bugs.  It must be removed from your compilation options.")
    ENDIF("${COMP_OPTION}" STREQUAL "-frename-registers")
    IF("${COMP_OPTION}" STREQUAL "-ffloat-store")
      MESSAGE(FATAL_ERROR "-ffloat-store causes runtime bugs on gcc 3.2.3 (appearently not on gcc 3.4.3, but the exact criteria is not known).  It must be removed from your compilation options.")
    ENDIF("${COMP_OPTION}" STREQUAL "-ffloat-store")
  ENDFOREACH(COMP_OPTION)
ENDIF(CMAKE_COMPILER_IS_GNUCXX)

# If the version of CMake was too old, complain and build nothing.
# These should be the last lines in this file.
ELSE("${CMAKE_MAJOR_VERSION}.${CMAKE_MINOR_VERSION}" GREATER 1.7)
  MESSAGE(SEND_ERROR
          "This version of CMake is too old to build this version of OTB.  "
          "Please upgrade to CMake 1.8.")
ENDIF("${CMAKE_MAJOR_VERSION}.${CMAKE_MINOR_VERSION}" GREATER 1.7)