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# ============================================================================
#                  SeqAn - The Library for Sequence Analysis
# ============================================================================
# Copyright (c) 2006-2012, Knut Reinert, FU Berlin
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
#
#     * Redistributions of source code must retain the above copyright
#       notice, this list of conditions and the following disclaimer.
#     * Redistributions in binary form must reproduce the above copyright
#       notice, this list of conditions and the following disclaimer in the
#       documentation and/or other materials provided with the distribution.
#     * Neither the name of Knut Reinert or the FU Berlin nor the names of
#       its contributors may be used to endorse or promote products derived
#       from this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED. IN NO EVENT SHALL KNUT REINERT OR THE FU BERLIN BE LIABLE
# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
# SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
# DAMAGE.
# ============================================================================
# Author: Manuel Holtgrewe <manuel.holtgrewe@fu-berlin.de>
# ============================================================================
# This CMake file is included by the root CMakeLists.txt to look for
# installed SeqAn contribs on the WIN32 platform.
# ============================================================================

if (WIN32)
  # For all contrib versions...
  foreach (_SEQAN_CONTRIB_VERSION D20111031 D20130710 D20131121)
    set (_SEQAN_CONTRIB_DIR "seqan-contrib-${_SEQAN_CONTRIB_VERSION}")

	  # Determine architecture for the precompiled contribs.
	  if (CMAKE_SIZEOF_VOID_P EQUAL 8)
		set (CONTRIB_ARCH "x64")
	  else ()
		set (CONTRIB_ARCH "x86")
	  endif ()

	  # Try to figure out where the user installed the contrib.  We expect
	  # it to be either in C:\, or one of the Program Files dirs.
	  #
	  # First, look into Program Files on 64 bit.
	  if (DEFINED ENV{ProgramW6432})
		if (IS_DIRECTORY "$ENV{ProgramW6432}/${_SEQAN_CONTRIB_DIR}-${CONTRIB_ARCH}")
		  set (SEQAN_CONTRIB_BASE "$ENV{ProgramW6432}/${_SEQAN_CONTRIB_DIR}-${CONTRIB_ARCH}")
		endif (IS_DIRECTORY "$ENV{ProgramW6432}/${_SEQAN_CONTRIB_DIR}-${CONTRIB_ARCH}")
	  endif (DEFINED ENV{ProgramW6432})
	  # Try out Program Files for 32bit Windows.
	  if (NOT DEFINED SEQAN_CONTRIB_BASE)
		if (IS_DIRECTORY "$ENV{ProgramFiles}/${_SEQAN_CONTRIB_DIR}-${CONTRIB_ARCH}")
		  set (SEQAN_CONTRIB_BASE "$ENV{ProgramFiles}/${_SEQAN_CONTRIB_DIR}-${CONTRIB_ARCH}")
		endif (IS_DIRECTORY "$ENV{ProgramFiles}/${_SEQAN_CONTRIB_DIR}-${CONTRIB_ARCH}")
	  endif (NOT DEFINED SEQAN_CONTRIB_BASE)
	  # Try out on C:/.
	  if (NOT DEFINED SEQAN_CONTRIB_BASE)
		if (IS_DIRECTORY C:\\${_SEQAN_CONTRIB_DIR}-${CONTRIB_ARCH})
		  set (SEQAN_CONTRIB_BASE "C:\\${_SEQAN_CONTRIB_DIR}-${CONTRIB_ARCH}")
		elseif ()
		  set (SEQAN_CONTRIB_BASE "C:\\${_SEQAN_CONTRIB_DIR}-${CONTRIB_ARCH}")
		endif ()
	  endif (NOT DEFINED SEQAN_CONTRIB_BASE)
      # Try to fall back to x64 on C:\ (MinGW is only available as 32 bit).
      set (CONTRIB_ARCH "x64")
      if (NOT DEFINED SEQAN_CONTRIB_BASE)
        if (IS_DIRECTORY "C:\\${_SEQAN_CONTRIB_DIR}-${CONTRIB_ARCH}")
          set (SEQAN_CONTRIB_BASE "C:\\${_SEQAN_CONTRIB_DIR}-${CONTRIB_ARCH}")
        endif ()
      endif ()

	  # Debug help.
      #if (NOT DEFINED SEQAN_CONTRIB_BASE)
      #	message("SEQAN_CONTRIB_BASE is undefined!")
      #else (NOT DEFINED SEQAN_CONTRIB_BASE)
      #	message("SEQAN_CONTRIB_BASE is ${SEQAN_CONTRIB_BASE}")
      #endif (NOT DEFINED SEQAN_CONTRIB_BASE)

	  # Try to figure out the generator.
	  if (IS_DIRECTORY ${SEQAN_CONTRIB_BASE})
		if (CMAKE_GENERATOR MATCHES "^Visual Studio .*")
		  string (REGEX REPLACE "^Visual Studio ([0-9]+).*$" "\\1" SEQAN_CONTRIB_VARIANT ${CMAKE_GENERATOR})
		  set (SEQAN_CONTRIB_VARIANT "vs${SEQAN_CONTRIB_VARIANT}")
		elseif (CMAKE_GENERATOR STREQUAL "MinGW Makefiles")
		  set (SEQAN_CONTRIB_VARIANT mingw)
		endif (CMAKE_GENERATOR MATCHES "^Visual Studio .*")

        #message(STATUS "SEQAN_CONTRIB_BASE    is ${SEQAN_CONTRIB_BASE}")
        #message(STATUS "SEQAN_CONTRIB_VARIANT is ${SEQAN_CONTRIB_VARIANT}")

		# Compose contrib path.
		set(SEQAN_CONTRIB_PATH "${SEQAN_CONTRIB_BASE}/${SEQAN_CONTRIB_VARIANT}")

		# Extend CMAKE_PREFIX_PATH.
		if (IS_DIRECTORY ${SEQAN_CONTRIB_PATH})
		  set (CMAKE_PREFIX_PATH ${SEQAN_CONTRIB_PATH} ${CMAKE_PREFIX_PATH})
		endif (IS_DIRECTORY ${SEQAN_CONTRIB_PATH})
	  endif (IS_DIRECTORY ${SEQAN_CONTRIB_BASE})

      message(STATUS "CMAKE_PREFIX_PATH is \"${CMAKE_PREFIX_PATH}\".")

      # Break out if contribs could be found.
      if (DEFINED SEQAN_CONTRIB_BASE)
        break ()  # found contribs at current path
      endif (DEFINED SEQAN_CONTRIB_BASE)

    endforeach ()  # all contrib versions.
endif (WIN32)