# The project name
# GIFT = Generalised Image Fusion Toolkit
#########################################
PROJECT( GIFT )

SET (LIBRARY_OUTPUT_PATH ${GIFT_BINARY_DIR}/bin CACHE PATH "Single output directory for building all libraries." FORCE)
SET (EXECUTABLE_OUTPUT_PATH ${GIFT_BINARY_DIR}/bin CACHE PATH "Single output directory for building all executables." FORCE)

# Add the testing directories
OPTION(GIFT_BUILD_TESTING "Test the project" ON)
IF(GIFT_BUILD_TESTING)
  ENABLE_TESTING()
ENDIF(GIFT_BUILD_TESTING)

SET(CXX_TEST_PATH ${EXECUTABLE_OUTPUT_PATH})

#
#  FIND ITK
#
FIND_PACKAGE(ITK)
IF (USE_ITK_FILE)
  INCLUDE (${USE_ITK_FILE})
ELSE (USE_ITK_FILE)
  MESSAGE( FATAL_ERROR "This application requires ITK. One of these components is missing. Please verify configuration")
ENDIF (USE_ITK_FILE)

#
# USE VXL
#
SET(VXL_NUMERICS_LIBRARIES itkvnl itkvnl_algo itknetlib)

# The GIFT Library
SUBDIRS(Source)

# Add the testing directories
IF(GIFT_BUILD_TESTING)
   SUBDIRS(Testing)
ENDIF(GIFT_BUILD_TESTING)

# Add the examples directories
OPTION(GIFT_BUILD_EXAMPLES "Project examples" ON)
IF(GIFT_BUILD_EXAMPLES)
  SUBDIRS(Examples)
ENDIF(GIFT_BUILD_EXAMPLES)

#-----------------------------------------------------------------------------
# Configure the default GIFT_DATA_ROOT for the location of GIFT Data.
FIND_PATH(GIFT_DATA_ROOT giftDataReadMe.txt ${GIFT_SOURCE_DIR}/Testing/Data $ENV{GIFT_DATA_ROOT})
MARK_AS_ADVANCED(GIFT_DATA_ROOT)


#-----------------------------------------------------------------------------
# The entire GIFT tree should use the same include path.

# Create the list of include directories needed for GIFT header files.
INCLUDE(${GIFT_SOURCE_DIR}/giftIncludeDirectories.cmake)

# This should be the only INCLUDE_DIRECTORIES command in the entire
# tree, except for the Utilities directory.  We need to
# do this in one place to make sure the order is correct.
INCLUDE_DIRECTORIES(
  ${GIFT_INCLUDE_DIRS_BUILD_TREE}
  ${GIFT_INCLUDE_DIRS_BUILD_TREE_CXX}
  ${GIFT_INCLUDE_DIRS_SYSTEM}
)


#-----------------------------------------------------------------------------
# Add compiler flags GIFT 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} ${GIFT_REQUIRED_C_FLAGS}")
SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${GIFT_REQUIRED_CXX_FLAGS}")
SET(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} ${GIFT_REQUIRED_LINK_FLAGS}")
SET(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} ${GIFT_REQUIRED_LINK_FLAGS}")
SET(CMAKE_MODULE_LINKER_FLAGS "${CMAKE_MODULE_LINKER_FLAGS} ${GIFT_REQUIRED_LINK_FLAGS}")



#OPTION(BUILD_DOCUMENTATION "Build GIFT Documentation" OFF)
#IF(BUILD_DOCUMENTATION)
#  FIND_PACKAGE(VTK)
#  IF (USE_VTK_FILE)
#    INCLUDE (${USE_VTK_FILE})
#  ELSE (USE_VTK_FILE)
#    MESSAGE( FATAL_ERROR "This application requires VTK. One of these components is missing. Please verify configuration")
#  ENDIF (USE_VTK_FILE)
#  SUBDIRS(Utilities/Doxygen)
#ENDIF(BUILD_DOCUMENTATION)