1.安装命令： Ubuntu 测试 其他linux应该是一样的
 
sudo apt-get install libusb-1.0-0-dev
sudo apt-get install libusb-dev

 
libusb库 1.23 之前(应该是的 1.23之前没有做测试)
例1.gcc -o main main.c -lusb
libusb库 1.23 之后
例2.gcc -o main main.c -lusb-1.0

#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <unistd.h>
#include <libusb-1.0/libusb.h>
#include <stdio.h>
#include <sys/types.h>

static void print_devs(libusb_device **devs)
{

	libusb_device *dev;
	int i = 0;
	while ((dev = devs[i++]) != NULL) {
		struct libusb_device_descriptor desc;
		int r = libusb_get_device_descriptor(dev, &desc);
		if (r < 0) {
			fprintf(stderr, "failed to get device descriptor");
			return;
		}
                	printf("%04x:%04x (bus %d, device %d)\n",
			desc.idVendor, desc.idProduct,
			libusb_get_bus_number(dev), libusb_get_device_address(dev));
	}
}

int main(void)
{
	libusb_device **devs;
	int r;
	ssize_t cnt; 
	r = libusb_init(NULL);
	if (r < 0)
		return r;
	cnt = libusb_get_device_list(NULL, &devs);
	if (cnt < 0)
		return (int) cnt;
	print_devs(devs);
	libusb_free_device_list(devs, 1);
	libusb_exit(NULL);
	return 0;

}