# source of this file
# https://github.com/OpenKinect/libfreenect/blob/master/cmake_modules/Findlibusb-1.0.cmake

# 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
#

if (LIBUSB_1_LIBRARIES AND LIBUSB_1_INCLUDE_DIRS)
    # in cache already
    set(LIBUSB_FOUND TRUE)
else (LIBUSB_1_LIBRARIES AND LIBUSB_1_INCLUDE_DIRS)
    find_path(LIBUSB_1_INCLUDE_DIR
            NAMES
            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 usb
            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}
            )

    if (LIBUSB_1_INCLUDE_DIRS AND LIBUSB_1_LIBRARIES)
        set(LIBUSB_1_FOUND TRUE)
    endif (LIBUSB_1_INCLUDE_DIRS AND LIBUSB_1_LIBRARIES)

    if (LIBUSB_1_FOUND)
        if (NOT libusb_1_FIND_QUIETLY)
            message(STATUS "Found libusb-1.0:")
            message(STATUS " - Includes: ${LIBUSB_1_INCLUDE_DIRS}")
            message(STATUS " - Libraries: ${LIBUSB_1_LIBRARIES}")
        endif (NOT libusb_1_FIND_QUIETLY)
    else (LIBUSB_1_FOUND)
        if (libusb_1_FIND_REQUIRED)
            message(FATAL_ERROR "Could not find libusb")
        endif (libusb_1_FIND_REQUIRED)
    endif (LIBUSB_1_FOUND)

    # 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)