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include(FindPackageHandleStandardArgs)
set(LibUSB_PKG_CONFIG_SPEC libusb-1.0>=1.0.16)
set(LibUSB_MIN_API_VERSION 0x01000102)
find_package(PkgConfig QUIET)
if(PKG_CONFIG_FOUND)
pkg_check_modules(PC_LibUSB ${LibUSB_PKG_CONFIG_SPEC})
endif()
find_library(LibUSB_LIBRARY
NAMES usb-1.0 libusb-1.0
HINTS ${PC_LibUSB_LIBRARY_DIRS}
)
find_path(LibUSB_INCLUDE_PATH
NAMES libusb.h
PATH_SUFFIXES libusb-1.0
HINTS ${PC_LibUSB_INCLUDE_DIRS}
)
set(LibUSB_API_VERSION "LibUSB_API_VERSION-NOTFOUND")
if(LibUSB_INCLUDE_PATH AND EXISTS "${LibUSB_INCLUDE_PATH}/libusb.h")
file(READ "${LibUSB_INCLUDE_PATH}/libusb.h" LIBUSB_H_TEXT)
if("${LIBUSB_H_TEXT}" MATCHES "#define[ \t]+LIBUSBX?_API_VERSION[ \t]+(0x[0-9a-fA-F]+)" )
set(LibUSB_API_VERSION "${CMAKE_MATCH_1}")
endif()
endif()
if(LibUSB_API_VERSION)
math(EXPR LibUSB_MIN_API_VERSION_decimal "${LibUSB_MIN_API_VERSION}")
math(EXPR LibUSB_API_VERSION_decimal "${LibUSB_API_VERSION}")
if(NOT LibUSB_MIN_API_VERSION_decimal LESS_EQUAL LibUSB_API_VERSION_decimal)
set(LibUSB_LIBRARY "LibUSB_LIBRARY-NOTFOUND")
endif()
else()
set(LibUSB_LIBRARY "LibUSB_LIBRARY-NOTFOUND")
endif()
set(LibUSB_COMPILE_OPTIONS "" CACHE STRING "Extra compile options of LibUSB")
set(LibUSB_LINK_LIBRARIES "" CACHE STRING "Extra link libraries of LibUSB")
set(LibUSB_LINK_FLAGS "" CACHE STRING "Extra link flags of LibUSB")
if(LibUSB_LIBRARY AND LibUSB_INCLUDE_PATH)
if(PC_LibUSB_FOUND)
set(LibUSB_VERSION "${PC_LibUSB_VERSION}")
else()
set(LibUSB_VERSION "1.0.16-or-higher")
endif()
else()
set(LibUSB_VERSION "LibUSB_VERSION-NOTFOUND")
endif()
find_package_handle_standard_args(LibUSB
VERSION_VAR LibUSB_VERSION
REQUIRED_VARS LibUSB_LIBRARY LibUSB_INCLUDE_PATH
)
if(LibUSB_FOUND AND NOT TARGET LibUSB::LibUSB)
add_library(LibUSB::LibUSB IMPORTED UNKNOWN)
set_target_properties(LibUSB::LibUSB
PROPERTIES
IMPORTED_LOCATION "${LibUSB_LIBRARY}"
INTERFACE_INCLUDE_DIRECTORIES "${LibUSB_INCLUDE_PATH}"
INTERFACE_COMPILE_OPTIONS "${LibUSB_COMPILE_OPTIONS}"
INTERFACE_LINK_LIBRARIES "${LibUSB_LINK_LIBRARIES}"
INTERFACE_LINK_OPTIONS "${LibUSB_LINK_OPTIONS}"
)
endif()
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