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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_INCLUDE_DIRS: the directory that contains the include file
# LibUSB_LIBRARIES: the library
include ( CheckLibraryExists )
include ( CheckIncludeFile )
find_package ( PkgConfig )
if ( PKG_CONFIG_FOUND )
pkg_check_modules ( PKGCONFIG_LIBUSB libusb )
endif ( PKG_CONFIG_FOUND )
if ( PKGCONFIG_LIBUSB_FOUND )
set ( LibUSB_FOUND ${PKGCONFIG_LIBUSB_FOUND} )
set ( LibUSB_INCLUDE_DIRS ${PKGCONFIG_LIBUSB_INCLUDE_DIRS} )
foreach ( i ${PKGCONFIG_LIBUSB_LIBRARIES} )
find_library ( ${i}_LIBRARY
NAMES ${i}
PATHS ${PKGCONFIG_LIBUSB_LIBRARY_DIRS}
)
if ( ${i}_LIBRARY )
list ( APPEND LibUSB_LIBRARIES ${${i}_LIBRARY} )
endif ( ${i}_LIBRARY )
mark_as_advanced ( ${i}_LIBRARY )
endforeach ( i )
else ( PKGCONFIG_LIBUSB_FOUND )
find_path ( LibUSB_INCLUDE_DIRS
NAMES
usb.h
PATHS
$ENV{ProgramFiles}/LibUSB-Win32
$ENV{LibUSB_ROOT_DIR}
PATH_SUFFIXES
include
)
mark_as_advanced ( LibUSB_INCLUDE_DIRS )
# message ( STATUS "LibUSB include dir: ${LibUSB_INCLUDE_DIRS}" )
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
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 ${usb_LIBRARY} )
endif ( usb_LIBRARY )
if ( LibUSB_INCLUDE_DIRS AND LibUSB_LIBRARIES )
set ( LibUSB_FOUND true )
endif ( LibUSB_INCLUDE_DIRS AND LibUSB_LIBRARIES )
endif ( PKGCONFIG_LIBUSB_FOUND )
if ( LibUSB_FOUND )
set ( CMAKE_REQUIRED_INCLUDES "${LibUSB_INCLUDE_DIRS}" )
check_include_file ( usb.h LibUSB_FOUND )
# message ( STATUS "LibUSB: usb.h is usable: ${LibUSB_FOUND}" )
endif ( LibUSB_FOUND )
if ( LibUSB_FOUND )
check_library_exists ( "${LibUSB_LIBRARIES}" usb_open "" LibUSB_FOUND )
# message ( STATUS "LibUSB: library is usable: ${LibUSB_FOUND}" )
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 )
#message ( STATUS "LibUSB: ${LibUSB_FOUND}" )
|
