我在Ubuntu Linux中使用代码块。我想用libusb库编写程序。我的系统中有此文件，但是IDE中的编译器找不到此文件。我在“构建选项”中添加了此文件，这没有帮助。这个问题有什么解决方案？
#include <libusb.h>
更新：
dpkg -L libusb-dev显示以下内容：/.
/usr
/usr/bin
/usr/bin/libusb-config
/usr/include
/usr/include/usb.h
/usr/lib
/usr/lib/libusb.a
/usr/lib/libusb.la
/usr/lib/pkgconfig
/usr/lib/pkgconfig/libusb.pc
/usr/share
/usr/share/doc
/usr/share/doc/libusb-dev
/usr/share/doc/libusb-dev/changelog.gz
/usr/share/doc/libusb-dev/html
/usr/share/doc/libusb-dev/html/index.html
/usr/share/doc/libusb-dev/html/preface.html
/usr/share/doc/libusb-dev/html/intro.html
/usr/share/doc/libusb-dev/html/intro-overview.html
/usr/share/doc/libusb-dev/html/intro-support.html
/usr/share/doc/libusb-dev/html/api.html
/usr/share/doc/libusb-dev/html/api-device-interfaces.html
/usr/share/doc/libusb-dev/html/api-timeouts.html
/usr/share/doc/libusb-dev/html/api-types.html
/usr/share/doc/libusb-dev/html/api-synchronous.html
/usr/share/doc/libusb-dev/html/api-return-values.html
/usr/share/doc/libusb-dev/html/functions.html
/usr/share/doc/libusb-dev/html/ref.core.html
/usr/share/doc/libusb-dev/html/function.usbinit.html
/usr/share/doc/libusb-dev/html/function.usbfindbusses.html
/usr/share/doc/libusb-dev/html/function.usbfinddevices.html
/usr/share/doc/libusb-dev/html/function.usbgetbusses.html
/usr/share/doc/libusb-dev/html/ref.deviceops.html
/usr/share/doc/libusb-dev/html/function.usbopen.html
/usr/share/doc/libusb-dev/html/function.usbclose.html
/usr/share/doc/libusb-dev/html/function.usbsetconfiguration.html
/usr/share/doc/libusb-dev/html/function.usbsetaltinterface.html
/usr/share/doc/libusb-dev/html/function.usbresetep.html
/usr/share/doc/libusb-dev/html/function.usbclearhalt.html
/usr/share/doc/libusb-dev/html/function.usbreset.html
/usr/share/doc/libusb-dev/html/function.usbclaiminterface.html
/usr/share/doc/libusb-dev/html/function.usbreleaseinterface.html
/usr/share/doc/libusb-dev/html/ref.control.html
/usr/share/doc/libusb-dev/html/function.usbcontrolmsg.html
/usr/share/doc/libusb-dev/html/function.usbgetstring.html
/usr/share/doc/libusb-dev/html/function.usbgetstringsimple.html
/usr/share/doc/libusb-dev/html/function.usbgetdescriptor.html
/usr/share/doc/libusb-dev/html/function.usbgetdescriptorbyendpoint.html
/usr/share/doc/libusb-dev/html/ref.bulk.html
/usr/share/doc/libusb-dev/html/function.usbbulkwrite.html
/usr/share/doc/libusb-dev/html/function.usbbulkread.html
/usr/share/doc/libusb-dev/html/ref.interrupt.html
/usr/share/doc/libusb-dev/html/function.usbinterruptwrite.html
/usr/share/doc/libusb-dev/html/function.usbinterruptread.html
/usr/share/doc/libusb-dev/html/ref.nonportable.html
/usr/share/doc/libusb-dev/html/function.usbgetdrivernp.html
/usr/share/doc/libusb-dev/html/function.usbdetachkerneldrivernp.html
/usr/share/doc/libusb-dev/html/examples.html
/usr/share/doc/libusb-dev/html/examples-code.html
/usr/share/doc/libusb-dev/html/examples-tests.html
/usr/share/doc/libusb-dev/html/examples-other.html
/usr/share/doc/libusb-dev/copyright
/usr/share/doc/libusb-dev/changelog.Debian.gz
/usr/share/doc-base
/usr/share/doc-base/libusb-dev
/usr/share/man
/usr/share/man/man1
/usr/share/man/man1/libusb-config.1.gz
/usr/lib/libusb.so
但是，当我将
#include <libusb.h>更改为#include <usb.h>并尝试编译此代码时：#include <stdio.h>
#include <stdlib.h>
#include <usb.h>
int main(){
usb_init();
printf("Hello world!\n");
return 0;
}
我收到以下错误：
undefined reference to 'usb_init'
最佳答案
似乎缺少libusb-dev。
要么
执行dpkg -L libusb-dev列出libusb-dev包中的所有文件，以找出合适的包含文件名及其位置。您很可能最终会将您的包含项更改为：
#include <usb.h>
另外，仅向程序添加头文件还不够-您需要显示要链接的库才能使用在头文件中声明的符号。在编译器选项中添加以下内容：
-lusb
关于c++ - libusb在IDE中不可见，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/7473978/