monero/cmake/FindLibUSB.cmake

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# - Find libusb for portable USB support
# This module will find libusb as published by
# http://libusb.sf.net and
# http://libusb-win32.sf.net
#
# It will use PkgConfig if present and supported, else search
# it on its own. If the LibUSB_ROOT_DIR environment variable
# is defined, it will be used as base path.
# The following standard variables get defined:
# LibUSB_FOUND: true if LibUSB was found
# LibUSB_HEADER_FILE: the location of the C header file
# LibUSB_INCLUDE_DIRS: the directory that contains the include file
# LibUSB_LIBRARIES: the library
# source: https://github.com/IntelRealSense/librealsense
include ( CheckLibraryExists )
include ( CheckIncludeFile )
find_package ( PkgConfig )
if ( PKG_CONFIG_FOUND )
pkg_check_modules ( PKGCONFIG_LIBUSB libusb-1.0 )
if ( NOT PKGCONFIG_LIBUSB_FOUND )
pkg_check_modules ( PKGCONFIG_LIBUSB libusb )
endif ( NOT PKGCONFIG_LIBUSB_FOUND )
endif ( PKG_CONFIG_FOUND )
if ( PKGCONFIG_LIBUSB_FOUND )
set ( LibUSB_INCLUDE_DIRS ${PKGCONFIG_LIBUSB_INCLUDE_DIRS} )
foreach ( i ${PKGCONFIG_LIBUSB_LIBRARIES} )
string ( REGEX MATCH "[^-]*" ibase "${i}" )
find_library ( ${ibase}_LIBRARY
NAMES ${i}
PATHS ${PKGCONFIG_LIBUSB_LIBRARY_DIRS}
)
if ( ${ibase}_LIBRARY )
list ( APPEND LibUSB_LIBRARIES ${${ibase}_LIBRARY} )
endif ( ${ibase}_LIBRARY )
mark_as_advanced ( ${ibase}_LIBRARY )
endforeach ( i )
else ( PKGCONFIG_LIBUSB_FOUND )
find_file ( LibUSB_HEADER_FILE
NAMES
libusb.h usb.h
PATHS
$ENV{ProgramFiles}/LibUSB-Win32
$ENV{LibUSB_ROOT_DIR}
PATH_SUFFIXES
include
libusb-1.0
include/libusb-1.0
)
mark_as_advanced ( LibUSB_HEADER_FILE )
get_filename_component ( LibUSB_INCLUDE_DIRS "${LibUSB_HEADER_FILE}" PATH )
if ( ${CMAKE_SYSTEM_NAME} STREQUAL "Windows" )
# LibUSB-Win32 binary distribution contains several libs.
# Use the lib that got compiled with the same compiler.
if ( MSVC )
if ( WIN32 )
set ( LibUSB_LIBRARY_PATH_SUFFIX lib/msvc )
else ( WIN32 )
set ( LibUSB_LIBRARY_PATH_SUFFIX lib/msvc_x64 )
endif ( WIN32 )
elseif ( BORLAND )
set ( LibUSB_LIBRARY_PATH_SUFFIX lib/bcc )
elseif ( CMAKE_COMPILER_IS_GNUCC )
set ( LibUSB_LIBRARY_PATH_SUFFIX lib/gcc )
endif ( MSVC )
endif ( ${CMAKE_SYSTEM_NAME} STREQUAL "Windows" )
find_library ( usb_LIBRARY
NAMES
usb-1.0 libusb usb
PATHS
$ENV{ProgramFiles}/LibUSB-Win32
$ENV{LibUSB_ROOT_DIR}
PATH_SUFFIXES
${LibUSB_LIBRARY_PATH_SUFFIX}
)
mark_as_advanced ( usb_LIBRARY )
if ( usb_LIBRARY )
set ( LibUSB_LIBRARIES ${usb_LIBRARY} )
endif ( usb_LIBRARY )
endif ( PKGCONFIG_LIBUSB_FOUND )
if ( LibUSB_INCLUDE_DIRS AND LibUSB_LIBRARIES )
set ( LibUSB_FOUND true )
endif ( LibUSB_INCLUDE_DIRS AND LibUSB_LIBRARIES )
if ( LibUSB_FOUND )
set ( CMAKE_REQUIRED_INCLUDES "${LibUSB_INCLUDE_DIRS}" )
check_include_file ( "${LibUSB_HEADER_FILE}" LibUSB_FOUND )
endif ( LibUSB_FOUND )
if ( LibUSB_FOUND )
check_library_exists ( "${LibUSB_LIBRARIES}" usb_open "" LibUSB_FOUND )
check_library_exists ( "${LibUSB_LIBRARIES}" libusb_get_device_list "" LibUSB_VERSION_1.0 )
check_library_exists ( "${LibUSB_LIBRARIES}" libusb_get_port_numbers "" LibUSB_VERSION_1.0.16 )
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if((STATIC AND UNIX AND NOT APPLE) OR (DEPENDS AND CMAKE_SYSTEM_NAME STREQUAL "Linux"))
find_library(LIBUDEV_LIBRARY udev)
if(LIBUDEV_LIBRARY)
set(LibUSB_LIBRARIES "${LibUSB_LIBRARIES};${LIBUDEV_LIBRARY}")
else()
message(WARNING "libudev library not found, binaries may fail to link.")
endif()
endif()
# Library 1.0.16+ compilation test.
# The check_library_exists does not work well on Apple with shared libs.
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if (APPLE OR LibUSB_VERSION_1.0.16 OR STATIC)
if (APPLE)
if(DEPENDS)
list(APPEND TEST_COMPILE_EXTRA_LIBRARIES "-framework Foundation -framework IOKit")
else()
find_library(COREFOUNDATION CoreFoundation)
find_library(IOKIT IOKit)
list(APPEND TEST_COMPILE_EXTRA_LIBRARIES ${IOKIT})
list(APPEND TEST_COMPILE_EXTRA_LIBRARIES ${COREFOUNDATION})
if(STATIC)
find_library(OBJC objc.a)
set(LIBUSB_DEP_LINKER ${OBJC})
list(APPEND TEST_COMPILE_EXTRA_LIBRARIES ${LIBUSB_DEP_LINKER})
endif()
endif()
endif()
if (WIN32)
list(APPEND TEST_COMPILE_EXTRA_LIBRARIES setupapi)
endif()
list(APPEND TEST_COMPILE_EXTRA_LIBRARIES ${LibUSB_LIBRARIES})
try_compile(LibUSB_COMPILE_TEST_PASSED
${CMAKE_BINARY_DIR}
"${CMAKE_SOURCE_DIR}/cmake/test-libusb-version.c"
CMAKE_FLAGS
"-DINCLUDE_DIRECTORIES=${LibUSB_INCLUDE_DIRS}"
"-DLINK_DIRECTORIES=${LibUSB_LIBRARIES}"
LINK_LIBRARIES ${TEST_COMPILE_EXTRA_LIBRARIES}
OUTPUT_VARIABLE OUTPUT)
unset(TEST_COMPILE_EXTRA_LIBRARIES)
message(STATUS "LibUSB Compilation test: ${LibUSB_COMPILE_TEST_PASSED}")
endif()
endif ( LibUSB_FOUND )
if ( NOT LibUSB_FOUND )
if ( NOT LibUSB_FIND_QUIETLY )
message ( STATUS "LibUSB not found, try setting LibUSB_ROOT_DIR environment variable." )
endif ( NOT LibUSB_FIND_QUIETLY )
if ( LibUSB_FIND_REQUIRED )
message ( FATAL_ERROR "" )
endif ( LibUSB_FIND_REQUIRED )
endif ( NOT LibUSB_FOUND )