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if(NOT LIBUSB_FOUND)
pkg_check_modules (LIBUSB_PKG libusb-1.0 libusb)
find_path(LIBUSB_INCLUDE_DIR NAMES libusb.h
PATHS
${LIBUSB_PKG_INCLUDE_DIRS}
/usr/include/libusb-1.0
/usr/include
/usr/local/include
)
#standard library name for libusb-1.0
set(libusb1_library_names usb-1.0 libusb-1.0)
#libusb-1.0 compatible library on freebsd
if((CMAKE_SYSTEM_NAME STREQUAL "FreeBSD") OR (CMAKE_SYSTEM_NAME STREQUAL "kFreeBSD") OR (CMAKE_SYSTEM_NAME STREQUAL "GNU"))
list(APPEND libusb1_library_names usb)
endif()
find_library(LIBUSB_LIBRARIES
NAMES ${libusb1_library_names}
PATHS
${LIBUSB_PKG_LIBRARY_DIRS}
/usr/lib
/usr/local/lib
)
include(CheckFunctionExists)
if(LIBUSB_INCLUDE_DIRS)
set(CMAKE_REQUIRED_INCLUDES ${LIBUSB_INCLUDE_DIRS})
endif()
if(LIBUSB_LIBRARIES)
set(CMAKE_REQUIRED_LIBRARIES ${LIBUSB_LIBRARIES})
endif()
CHECK_FUNCTION_EXISTS("libusb_handle_events_timeout_completed" HAVE_LIBUSB_HANDLE_EVENTS_TIMEOUT_COMPLETED)
if(HAVE_LIBUSB_HANDLE_EVENTS_TIMEOUT_COMPLETED)
add_definitions(-DHAVE_LIBUSB_HANDLE_EVENTS_TIMEOUT_COMPLETED=1)
endif(HAVE_LIBUSB_HANDLE_EVENTS_TIMEOUT_COMPLETED)
CHECK_FUNCTION_EXISTS("libusb_error_name" HAVE_LIBUSB_ERROR_NAME)
if(HAVE_LIBUSB_ERROR_NAME)
add_definitions(-DHAVE_LIBUSB_ERROR_NAME=1)
endif(HAVE_LIBUSB_ERROR_NAME)
if(LIBUSB_INCLUDE_DIR AND LIBUSB_LIBRARIES)
set(LIBUSB_FOUND TRUE CACHE INTERNAL "libusb-1.0 found")
message(STATUS "Found libusb-1.0: ${LIBUSB_INCLUDE_DIR}, ${LIBUSB_LIBRARIES}")
else(LIBUSB_INCLUDE_DIR AND LIBUSB_LIBRARIES)
set(LIBUSB_FOUND FALSE CACHE INTERNAL "libusb-1.0 found")
message(STATUS "libusb-1.0 not found.")
endif(LIBUSB_INCLUDE_DIR AND LIBUSB_LIBRARIES)
mark_as_advanced(LIBUSB_INCLUDE_DIR LIBUSB_LIBRARIES)
endif(NOT LIBUSB_FOUND)
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