# Find TBB
#
# This module defines
#  TBB_FOUND
#  TBB_LIBRARIES
#
# Copyright (c) 2012 I-maginer
#
# This program is free software; you can redistribute it and/or modify it under
# the terms of the GNU Lesser 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 Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License along with
# this program; if not, write to the Free Software Foundation, Inc., 59 Temple
# Place - Suite 330, Boston, MA 02111-1307, USA, or go to
# http://www.gnu.org/copyleft/lesser.txt
#

# On a new cmake run, we do not need to be verbose
IF(TBB_INCLUDE_DIR AND TBB_LIBRARY)
	SET(TBB_FIND_QUIETLY TRUE)
ENDIF()

if( MSVC )
  # in order to prevent DLL hell, each of the DLLs have to be suffixed with the major version and msvc prefix
  if( MSVC70 OR MSVC71 )
    set(MSVC_PREFIX "vc70")
  elseif( MSVC80 )
    set(MSVC_PREFIX "vc80")
  elseif( MSVC90 )
    set(MSVC_PREFIX "vc90")
  elseif( MSVC10 )
    set(MSVC_PREFIX "vc10")
  elseif( MSVC11 )
    set(MSVC_PREFIX "vc11")
  elseif( MSVC12 )
    set(MSVC_PREFIX "vc12")
  else()
    set(MSVC_PREFIX "vc13")
  endif()
  set(TBB_FOLDER_SUFFIX ${MSVC_PREFIX} CACHE STRING "the suffix for the assimp windows library" FORCE)
else()
  set(TBB_FOLDER_SUFFIX "" CACHE STRING "the suffix for the assimp library" FORCE)
endif()

# If TBB_ROOT was defined in the environment, use it.
if (NOT TBB_ROOT)
  if(NOT "$ENV{TBB_ROOT}" STREQUAL "")
    set(TBB_ROOT $ENV{TBB_ROOT})
  else()
    if(ANDROID)
      set(TBB_ROOT $ENV{SCOL_DEPENDENCIES_PATH}/OpenCV/SDK/android/${ANDROID_ABI} CACHE PATH "TBB SDK path" FORCE)
    elseif(WIN32)
      set(TBB_ROOT $ENV{SCOL_DEPENDENCIES_PATH}/OpenCV/SDK/windows/x86/x86/${TBB_FOLDER_SUFFIX} CACHE PATH "TBB SDK path" FORCE)
    elseif(WIN32 AND (WIN64 OR (CMAKE_SIZEOF_VOID_P EQUAL 8)))
      set(TBB_ROOT $ENV{SCOL_DEPENDENCIES_PATH}/OpenCV/SDK/windows/x64 CACHE PATH "TBB SDK path" FORCE)
    elseif(APPLE AND NOT APPLE_IOS)
      set(TBB_ROOT $ENV{SCOL_DEPENDENCIES_PATH}/OpenCV/SDK/apple/OSX CACHE PATH "TBB SDK path" FORCE)
    elseif(APPLE AND APPLE_IOS)
      set(TBB_ROOT $ENV{SCOL_DEPENDENCIES_PATH}/OpenCV/SDK/apple/IOS CACHE PATH "TBB SDK path" FORCE)
    else()
      set(TBB_ROOT $ENV{SCOL_DEPENDENCIES_PATH}/OpenCV/SDK CACHE PATH "TBB SDK path" FORCE)
    endif()
  endif()
endif()

MARK_AS_ADVANCED(
  TBB_FOLDER_SUFFIX
)

# concat all the search paths
IF(TBB_ROOT)
  SET(TBB_LIBRARY_SEARCH_RELEASE_DIRS
    ${TBB_LIBRARY_SEARCH_DIRS}
    ${TBB_ROOT}/lib
    ${TBB_ROOT}/staticlib
    ${TBB_ROOT}/sdk/native/3rdparty/libs/${ANDROID_ABI}
  )
  SET(TBB_LIBRARY_SEARCH_DEBUG_DIRS
    ${TBB_LIBRARY_SEARCH_DIRS}
    ${TBB_ROOT}/lib
    ${TBB_ROOT}/staticlib
    ${TBB_ROOT}/sdk/native/3rdparty/libs/${ANDROID_ABI}
  )
ENDIF()

# log message
IF (NOT TBB_FIND_QUIETLY)
	MESSAGE(STATUS "Checking for TBB library")
ENDIF()

# Search for libraries files (release mode)
FIND_LIBRARY(TBB_LIBRARY_RELEASE tbb libtbb
  PATHS ${TBB_LIBRARY_SEARCH_RELEASE_DIRS})

# Search for libraries files (debug mode)
FIND_LIBRARY(TBB_LIBRARY_DEBUG tbb_debug tbb libtbb
  PATHS ${TBB_LIBRARY_SEARCH_DEBUG_DIRS})

# Configure libraries for debug/release
SET(TBB_LIBRARY debug ${TBB_LIBRARY_DEBUG} optimized ${TBB_LIBRARY_RELEASE})
SET(TBB_LIBRARIES ${TBB_LIBRARY} CACHE STRING "TBB libraries files")

IF(TBB_LIBRARY)
	SET(TBB_FOUND TRUE)
ENDIF()

# Hide those variables in GUI
SET(TBB_LIBRARY_RELEASE ${TBB_LIBRARY_RELEASE} CACHE INTERNAL "")
SET(TBB_LIBRARY_DEBUG ${TBB_LIBRARY_DEBUG} CACHE INTERNAL "")
SET(TBB_LIBRARY ${TBB_LIBRARY} CACHE INTERNAL "")

# log find result
IF(TBB_FOUND)
	IF(NOT TBB_FIND_QUIETLY)
		MESSAGE(STATUS "  libraries: ${TBB_LIBRARIES}")
	ENDIF()
ELSE(TBB_FOUND)
	IF(NOT TBB_LIBRARIES)
		MESSAGE(STATUS, "TBB library or one of it dependencies could not be found.")
	ENDIF()
	IF(NOT TBB_INCLUDE_DIRS)
		MESSAGE(STATUS "TBB include files could not be found.")
	ENDIF()
ENDIF(TBB_FOUND)