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rtabmap/cmake_modules/FindFreenect.cmake

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# - Find Freenect alias libfreenect
# This module finds an installed Freenect package.
#
# It sets the following variables:
# Freenect_FOUND - Set to false, or undefined, if Freenect isn't found.
# Freenect_INCLUDE_DIRS - The Freenect include directory.
# Freenect_LIBRARIES - The Freenect library to link against.
FIND_PATH(Freenect_INCLUDE_DIRS libfreenect-registration.h PATH_SUFFIXES libfreenect)
FIND_LIBRARY(Freenect_LIBRARY NAMES freenect)
FIND_LIBRARY(Freenect_sync_LIBRARY NAMES freenect_sync)
IF (Freenect_INCLUDE_DIRS AND Freenect_LIBRARY AND Freenect_sync_LIBRARY)
SET(Freenect_FOUND TRUE)
ENDIF (Freenect_INCLUDE_DIRS AND Freenect_LIBRARY AND Freenect_sync_LIBRARY)
IF (Freenect_FOUND)
# show which Freenect was found only if not quiet
SET(Freenect_LIBRARIES ${Freenect_LIBRARY} ${Freenect_sync_LIBRARY})
IF (NOT Freenect_FIND_QUIETLY)
MESSAGE(STATUS "Found Freenect")
ENDIF (NOT Freenect_FIND_QUIETLY)
ELSE (Freenect_FOUND)
# fatal error if Freenect is required but not found
IF (Freenect_FIND_REQUIRED)
MESSAGE(FATAL_ERROR "Could not find Freenect (libfreenect)")
ENDIF (Freenect_FIND_REQUIRED)
ENDIF (Freenect_FOUND)