#
 #             ORXONOX - the hottest 3D action shooter ever to exist
 #                             > www.orxonox.net <
 #
 #        This program is free software; you can redistribute it and/or
 #         modify it under the terms of the GNU General Public License
 #        as published by the Free Software Foundation; either version 2
 #            of the License, or (at your option) any later version.
 #
 #       This program is distributed in the hope that it will be useful,
 #        but WITHOUT ANY WARRANTY; without even the implied warranty of
 #        MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 #                 GNU General Public License for more details.
 #
 #   You should have received a copy of the GNU General Public License along
 #      with this program; if not, write to the Free Software Foundation,
 #     Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 #
 #
 #  Author:
 #    Reto Grieder
 #  Description:
 #    Configures the external libraries. Whenever possible, the find scripts
 #    from the CMake module path are used, but that required some adjustments
 #    for certain libraries (Boost, OpenAL, TCL)
 #
 
INCLUDE(CompareVersionStrings)
INCLUDE(FindPackageHandleStandardArgs)

# Prevent CMake from finding libraries in the installation folder on Windows.
# There might already be an installation from another compiler
IF(WIN32)
  LIST(REMOVE_ITEM CMAKE_SYSTEM_PREFIX_PATH  "${CMAKE_INSTALL_PREFIX}")
  LIST(REMOVE_ITEM CMAKE_SYSTEM_LIBRARY_PATH "${CMAKE_INSTALL_PREFIX}/bin")
ENDIF()

############## Platform Scripts #################

# On Windows using a package causes way less problems
SET(_option_msg "Set this to true to use precompiled dependecy archives")
IF(WIN32)
  OPTION(DEPENDENCY_PACKAGE_ENABLE "${_option_msg}" ON)
ELSE(WIN32)
  OPTION(DEPENDENCY_PACKAGE_ENABLE "${_option_msg}" FALSE)
ENDIF(WIN32)

# Scripts for specific library and CMake config
INCLUDE(LibraryConfigTardis)

IF(DEPENDENCY_PACKAGE_ENABLE)
  GET_FILENAME_COMPONENT(_dep_dir_1 ${CMAKE_SOURCE_DIR}/../dependencies ABSOLUTE)
  GET_FILENAME_COMPONENT(_dep_dir_2 ${CMAKE_SOURCE_DIR}/../lib_dist/dependencies ABSOLUTE)
  FIND_PATH(DEPENDENCY_PACKAGE_DIR
    NAMES include
    PATHS
      ${CMAKE_SOURCE_DIR}/dependencies
      ${_dep_dir_1}
      ${_dep_dir_2}
    NO_CMAKE_PATH NO_CMAKE_ENVIRONMENT_PATH NO_SYSTEM_ENVIRONMENT_PATH NO_CMAKE_SYSTEM_PATH
  )
  IF(NOT DEPENDENCY_PACKAGE_DIR)
    MESSAGE(STATUS "Warning: Could not find dependency directory."
                   "Disable LIBRARY_USE_PACKAGE if you have none intalled.")
  ELSE()
    INCLUDE(PackageConfigMinGW)
    INCLUDE(PackageConfigMSVC)
    INCLUDE(PackageConfig) # For both msvc and mingw
  ENDIF()
ENDIF(DEPENDENCY_PACKAGE_ENABLE)

############### Library finding #################
# Performs the search and sets the variables    #

FIND_PACKAGE(OGRE  1.4       REQUIRED)
##### Lua #####
IF(CEGUILUA_USE_EXTERNAL_LIBRARY)
  COMPARE_VERSION_STRINGS(${CEGUI_VERSION} "0.6" _version_comparison)
  IF(version_comparison LESS 0)
    SET(LUA_VERSION_REQUEST 5.0)
  ELSE()
    SET(LUA_VERSION_REQUEST 5.1)
  ENDIF()
ELSE()
  SET(LUA_VERSION_REQUEST 5)
ENDIF()
FIND_PACKAGE(Lua ${LUA_VERSION_REQUEST} EXACT REQUIRED)

##### Boost #####
# Expand the next statement if newer boost versions than 1.36.1 are released
SET(Boost_ADDITIONAL_VERSIONS 1.37 1.37.0 1.38 1.38.0 1.39 1.39.0)
FIND_PACKAGE(Boost 1.35 REQUIRED thread filesystem system date_time)
# No auto linking, so this option is useless anyway
MARK_AS_ADVANCED(Boost_LIB_DIAGNOSTIC_DEFINITIONS)


####### Static/Dynamic linking options ##########

# On Windows dynamically linked libraries need some special treatment
# You may want to edit these settings if you provide your own libraries
# Note: Default option in the libraries vary, but our default option is dynamic
IF(WIN32)
  OPTION(LINK_BOOST_DYNAMIC "Link Boost dynamically on Windows" TRUE)
  OPTION(LINK_OGRE_DYNAMIC  "Link OGRE dynamically on Windows" TRUE)
  COMPARE_VERSION_STRINGS("${LUA_VERSION}" "5.1" _version_comparison)
  IF(_version_comparison LESS 0)
    OPTION(LINK_LUA_DYNAMIC "Link Lua dynamically on Windows" FALSE)
  ELSE(_version_comparison LESS 0)
    OPTION(LINK_LUA_DYNAMIC "Link Lua dynamically on Windows" TRUE)
  ENDIF(_version_comparison LESS 0)

  IF(DEPENDENCY_PACKAGE_ENABLE)
    MARK_AS_ADVANCED(
      LINK_BOOST_DYNAMIC
      LINK_OGRE_DYNAMIC
      LINK_LUA_DYNAMIC
    )
  ENDIF()
ENDIF(WIN32)