如何使libusb库对另一个程序可见？ [英] How to make libusb library visible to another program?

问题描述

我正在尝试编译 hidapi 库。为了编译，我需要 libusb-1.0 。我已经下载，配置，制作和安装到 / usr / local / lib 。但是当我尝试编译 hidapi 时，它看不到 libusb-1.0 ：

cc -Wall -g -c -I ../ hidapi pkg-config libusb-1.0 --cflags
hid-libusb.c -o hid-libusb.o -L / usr / local / lib包libusb-1.0是
在pkg-config搜索路径中找不到。也许你应该将包含`libusb-1.0.pc'的
目录添加到PKG_CONFIG_PATH
环境变量中找不到包'libusb-1.0'/ bin / sh：cc：not
make：

[hid-libusb.o]错误127

（在Synology NAS上进行编译）

解决方案

$ c> / usr / local / lib ， pkg-config 将找不到您的安装，除非您设置 PKG_CONFIG_PATH 正确

尝试执行：

  export PKG_CONFIG_PATH =$ PKG_CONFIG_PATH：/ usr / local / lib / pkgconfig
  

尝试构建您的代码

I am trying to compile hidapi library. In order to compile that, I need libusb-1.0. I've downloaded that, configured, made and installed to /usr/local/lib. But when I try to compile hidapi, it doesn't see libusb-1.0:

cc -Wall -g -c -I../hidapi pkg-config libusb-1.0 --cflags hid-libusb.c -o hid-libusb.o -L/usr/local/lib Package libusb-1.0 was not found in the pkg-config search path. Perhaps you should add the directory containing `libusb-1.0.pc' to the PKG_CONFIG_PATH environment variable No package 'libusb-1.0' found /bin/sh: cc: not found make: * [hid-libusb.o] Error 127

How can I fix that?

(compilation happens on Synology NAS)

解决方案

Since you installed to /usr/local/lib, pkg-config will not find your installation unless you set PKG_CONFIG_PATH appropriately

Try running:

export PKG_CONFIG_PATH="$PKG_CONFIG_PATH:/usr/local/lib/pkgconfig"

in your shell and then re-attempting to build your code

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