我正在尝试使用Cygwin中的arm-verifone-linux-gnueabi-gcc编译器交叉编译libusb v1.0.19库，但在配置调用结束时它显示此错误：
已请求 udev 支持，但未安装 libudev。
这是我的配置调用：
./configure CC=arm-verifone-linux-gnueabi-gcc --host=arm-linux
checking operating system... Linux
checking for library containing clock_gettime... -lrt
checking libudev.h usability... no
checking libudev.h presence... no
checking for libudev.h... no
configure: error: "udev support requested but libudev not installed"
configure: WARNING: cache variable lt_cv_path_LD contains a newline
该错误清楚地表明libudev 在我的设置中不可用，所以我尝试用谷歌搜索libudev 源，所以我也可以交叉编译它，但不幸的是我找不到源。我在哪里可以找到 libudev 源或如何解决此错误？
更新：通过运行此配置行，我能够摆脱“udev”错误：
./configure CC=arm-verifone-linux-gnueabi-gcc --host=arm-linux --disable-udev
但是运行“make”后，它显示：
checking that generated files are newer than configure... done
configure: creating ./config.status
config.status: creating libusb-1.0.pc
config.status: creating Makefile
config.status: creating libusb/Makefile
config.status: creating examples/Makefile
config.status: creating tests/Makefile
config.status: creating doc/Makefile
config.status: creating doc/doxygen.cfg
config.status: creating config.h
config.status: config.h is unchanged
config.status: executing depfiles commands
config.status: executing libtool commands
configure: WARNING: cache variable lt_cv_path_LD contains a newline
user@g480 /usr/src/libusb-1.0.19
$ make
Makefile:264: *** missing separator. Stop.
我该如何解决？