cmake_minimum_required(VERSION 3.5)

if(WIN32)
  # определяем архитектуру (32/64-bit) target-системы
  if(${CMAKE_SIZEOF_VOID_P} EQUAL 8)
    # для x64
    # для MinGW (GCC)
    if(CMAKE_CXX_COMPILER_ID MATCHES "GNU")
      set(LibusbLib ${CMAKE_CURRENT_SOURCE_DIR}/MinGW64/static/libusb-1.0.a)
    # для VisualStudio (MSVC)
    elseif(CMAKE_CXX_COMPILER_ID MATCHES "MSVC")
      set(LibusbLib ${CMAKE_CURRENT_SOURCE_DIR}/VS2015/MS64/static/libusb-1.0.lib)
    endif()
  else()
    # для x86
    # для MinGW (GCC)
    if(CMAKE_CXX_COMPILER_ID MATCHES "GNU")
      set(LibusbLib ${CMAKE_CURRENT_SOURCE_DIR}/MinGW32/static/libusb-1.0.a)
    # для VisualStudio (MSVC)
    elseif(CMAKE_CXX_COMPILER_ID MATCHES "MSVC")
      set(LibusbLib ${CMAKE_CURRENT_SOURCE_DIR}/VS2015/MS32/static/libusb-1.0.lib)
    endif()
  endif()
elseif(UNIX)
  set(LibusbLib usb-1.0)
else()
  set(LibusbLib )
endif()

set(Libusb_LIB ${Libusb_LIB} ${LibusbLib} PARENT_SCOPE)

set(Libusb_INCLUDE_DIR
  ${Libusb_INCLUDE_DIR}
  ${CMAKE_CURRENT_SOURCE_DIR}/include
  PARENT_SCOPE
)

set(Libusb_HEADERS
  ${Libusb_HEADERS}
  ${CMAKE_CURRENT_SOURCE_DIR}/include/libusb-1.0/libusb.h
  PARENT_SCOPE
)