1. libusb-1.0.22 简单介绍
libusbx之前是lisbusb一个分支，现在已经合并到Libusb上了。
libusb是一个C库,它提供了通用的访问USB设备。 它的目的是供开发人员使用方便的生产与USB通信硬件的应用程序。libusb是一个开源库,允许你从用户空间与USB设备通信。 更多信息,请参阅libusb主页。
可移植的:
使用一个跨平台API,它提供了访问USB设备在Linux上,OS X Windows,Android,OpenBSD等等。
用户模式:
不需要特权或高程应用程序与设备进行通信。
version-agnostic: 所有版本的USB协议,从1.0到3.0(最新),都受支持。
2. 目录介绍
tests/
关于libusb的四个压力测试，不涉USB打开操作及具体的数据传输。
android/
用于生成Android版本的libusb库、test和examples。进入android/jni/，执行ndk_build即可。在android/README中有以下描述：
libusb/
libusb的核心代码。
1）os/目录是是平台相关的代码，支持：darwin、haiku、linux、windows、sunos、netbsd、openbsd等七种平台，即Linux, OS X, Windows, Windows CE, Android, OpenBSD/NetBSD, Haiku。
2）libusb-1.0.def DLL中导出函数的声明的一种方式：采用模块定义(.def) 文件声明，.def文件为链接器提供了有关被链接程序的导出、属性及其他方面的信息。
3）libusb-1.0.rc 用于windows，产生 .res文件。
msvc/
微软VC编译环境，目录下均是windows平台环境相关文件。
m4/
linux编译相关。m4 是一种宏处理器，它扫描用户输入的文本并将其输出，期间如果遇到宏就将其展开后输出。
Xcode/
apple平台相关文件。Xcode是苹果的集成开发环境（IDE），开发者可用其构建适用于苹果iPad、iPhone以及Mac设备的应用程序。在应用程序的创建、测试、优化以及提交至App Store的过程中，Xcode为开发者提供了用以管理整个开发工作流的工具。
examples/
libusb的测试demo，进入目录后执行make即可生成可执行文件进行测试。
3. configure --help
1 `configure' configures libusb 1.0.22 to adapt to many kinds of systems. 2 3 Usage: configure [OPTION]... [VAR=VALUE]... 4 5 To assign environment variables (e.g., CC, CFLAGS...), specify them as 6 VAR=VALUE. See below for descriptions of some of the useful variables. 7 8 Defaults for the options are specified in brackets. 9 10 Configuration: 11 -h, --help display this help and exit 12 --help=short display options specific to this package 13 --help=recursive display the short help of all the included packages 14 -V, --version display version information and exit 15 -q, --quiet, --silent do not print `checking ...' messages 16 --cache-file=FILE cache test results in FILE [disabled] 17 -C, --config-cache alias for `--cache-file=config.cache' 18 -n, --no-create do not create output files 19 --srcdir=DIR find the sources in DIR [configure dir or `..'] 20 21 Installation directories: 22 --prefix=PREFIX install architecture-independent files in PREFIX 23 [/usr/local] 24 --exec-prefix=EPREFIX install architecture-dependent files in EPREFIX 25 [PREFIX] 26 27 By default, `make install' will install all the files in 28 `/usr/local/bin', `/usr/local/lib' etc. You can specify 29 an installation prefix other than `/usr/local' using `--prefix', 30 for instance `--prefix=$HOME'. 31 32 For better control, use the options below. 33 34 Fine tuning of the installation directories: 35 --bindir=DIR user executables [EPREFIX/bin] 36 --sbindir=DIR system admin executables [EPREFIX/sbin] 37 --libexecdir=DIR program executables [EPREFIX/libexec] 38 --sysconfdir=DIR read-only single-machine data [PREFIX/etc] 39 --sharedstatedir=DIR modifiable architecture-independent data [PREFIX/com] 40 --localstatedir=DIR modifiable single-machine data [PREFIX/var] 41 --runstatedir=DIR modifiable per-process data [LOCALSTATEDIR/run] 42 --libdir=DIR object code libraries [EPREFIX/lib] 43 --includedir=DIR C header files [PREFIX/include] 44 --oldincludedir=DIR C header files for non-gcc [/usr/include] 45 --datarootdir=DIR read-only arch.-independent data root [PREFIX/share] 46 --datadir=DIR read-only architecture-independent data [DATAROOTDIR] 47 --infodir=DIR info documentation [DATAROOTDIR/info] 48 --localedir=DIR locale-dependent data [DATAROOTDIR/locale] 49 --mandir=DIR man documentation [DATAROOTDIR/man] 50 --docdir=DIR documentation root [DATAROOTDIR/doc/libusb] 51 --htmldir=DIR html documentation [DOCDIR] 52 --dvidir=DIR dvi documentation [DOCDIR] 53 --pdfdir=DIR pdf documentation [DOCDIR] 54 --psdir=DIR ps documentation [DOCDIR] 55 56 Program names: 57 --program-prefix=PREFIX prepend PREFIX to installed program names 58 --program-suffix=SUFFIX append SUFFIX to installed program names 59 --program-transform-name=PROGRAM run sed PROGRAM on installed program names 60 61 System types: 62 --build=BUILD configure for building on BUILD [guessed] 63 --host=HOST cross-compile to build programs to run on HOST [BUILD] 64 65 Optional Features: 66 --disable-option-checking ignore unrecognized --enable/--with options 67 --disable-FEATURE do not include FEATURE (same as --enable-FEATURE=no) 68 --enable-FEATURE[=ARG] include FEATURE [ARG=yes] 69 --enable-silent-rules less verbose build output (undo: "make V=1") 70 --disable-silent-rules verbose build output (undo: "make V=0") 71 --enable-dependency-tracking 72 do not reject slow dependency extractors 73 --disable-dependency-tracking 74 speeds up one-time build 75 --enable-shared[=PKGS] build shared libraries [default=yes] 76 --enable-static[=PKGS] build static libraries [default=yes] 77 --enable-fast-install[=PKGS] 78 optimize for fast installation [default=yes] 79 --disable-libtool-lock avoid locking (might break parallel builds) 80 --enable-udev use udev for device enumeration and hotplug support 81 (recommended) [default=yes] 82 --enable-timerfd use timerfd for timing [default=auto] 83 --disable-log disable all logging 84 --enable-debug-log start with debug message logging enabled 85 [default=no] 86 --enable-system-log output logging messages to system wide log, if 87 supported by the OS [default=no] 88 --enable-examples-build build example applications [default=no] 89 --enable-tests-build build test applications [default=no] 90 91 Optional Packages: 92 --with-PACKAGE[=ARG] use PACKAGE [ARG=yes] 93 --without-PACKAGE do not use PACKAGE (same as --with-PACKAGE=no) 94 --with-pic[=PKGS] try to use only PIC/non-PIC objects [default=use 95 both] 96 --with-aix-soname=aix|svr4|both 97 shared library versioning (aka "SONAME") variant to 98 provide on AIX, [default=aix]. 99 --with-gnu-ld assume the C compiler uses GNU ld [default=no] 100 --with-sysroot[=DIR] Search for dependent libraries within DIR (or the 101 compiler's sysroot if not specified). 102 103 Some influential environment variables: 104 CC C compiler command 105 CFLAGS C compiler flags 106 LDFLAGS linker flags, e.g. -L<lib dir> if you have libraries in a 107 nonstandard directory <lib dir> 108 LIBS libraries to pass to the linker, e.g. -l<library> 109 CPPFLAGS (Objective) C/C++ preprocessor flags, e.g. -I<include dir> if 110 you have headers in a nonstandard directory <include dir> 111 CXX C++ compiler command 112 CXXFLAGS C++ compiler flags 113 LT_SYS_LIBRARY_PATH 114 User-defined run-time library search path. 115 CPP C preprocessor 116 CXXCPP C++ preprocessor 117 118 Use these variables to override the choices made by `configure' or to help 119 it to find libraries and programs with nonstandard names/locations. 120 121 Report bugs to <libusb-devel@lists.sourceforge.net>. 122 libusb home page: <http://libusb.info>.
4. 编译
1 bash configure --prefix=./ 2 ... 3 make -f Makefile 4 ...
-- 生成文件
注： 生成的dll a 文件可以提供给mingw qt 直接使用。
此为dll 的导入库。
libusb学习网站：
website：http://libusb.info/
API：http://libusb.sourceforge.net/api-1.0/
download：https://github.com/libusb/libusb
mailing list：http://mailing-list.libusb.info
libusb test demo：https://github.com/crazybaoli/libusb-test