# - Try to find libusb-1.0
# Once done this will define
#
#  LIBUSB_1_FOUND - system has libusb
#  LIBUSB_1_INCLUDE_DIRS - the libusb include directory
#  LIBUSB_1_LIBRARIES - Link these to use libusb
#  LIBUSB_1_DEFINITIONS - Compiler switches required for using libusb
#
#  Adapted from cmake-modules Google Code project
#
#  Copyright (c) 2006 Andreas Schneider <mail@cynapses.org>
#
#  (Changes for libusb) Copyright (c) 2008 Kyle Machulis <kyle@nonpolynomial.com>
#  
#  Point Cloud Library (PCL) - www.pointclouds.org
#  Copyright (c) 2012, Willow Garage, Inc. (use of FindPackageHandleStandardArgs)
#
# Redistribution and use is allowed according to the terms of the New BSD license.
#
# CMake-Modules Project New BSD License
#
# 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 the CMake-Modules Project 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 THE COPYRIGHT OWNER OR CONTRIBUTORS 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.
#

if (LIBUSB_1_LIBRARIES AND LIBUSB_1_INCLUDE_DIRS)
  # in cache already
  set(LIBUSB_FOUND TRUE)
  set(LIBUSB_1_FOUND TRUE)
else (LIBUSB_1_LIBRARIES AND LIBUSB_1_INCLUDE_DIRS)
  find_path(LIBUSB_1_INCLUDE_DIR
            NAMES libusb-1.0/libusb.h
	    PATHS /usr/include /usr/local/include /opt/local/include /sw/include 
	    PATH_SUFFIXES libusb-1.0)

  find_library(LIBUSB_1_LIBRARY
               NAMES usb-1.0
	       PATHS /usr/lib /usr/local/lib /opt/local/lib /sw/lib)

  set(LIBUSB_1_INCLUDE_DIRS ${LIBUSB_1_INCLUDE_DIR})
  set(LIBUSB_1_LIBRARIES ${LIBUSB_1_LIBRARY})

  include(FindPackageHandleStandardArgs)
  find_package_handle_standard_args(LIBUSB_1 DEFAULT_MSG LIBUSB_1_LIBRARY LIBUSB_1_INCLUDE_DIR)

  # show the LIBUSB_1_INCLUDE_DIRS and LIBUSB_1_LIBRARIES variables only in the advanced view
  mark_as_advanced(LIBUSB_1_INCLUDE_DIRS LIBUSB_1_LIBRARIES)
endif (LIBUSB_1_LIBRARIES AND LIBUSB_1_INCLUDE_DIRS)
