~ Help code::block errors ~ undefined reference ?

[USB-NOOB]

Please Help

I am a complete novice so please start with the simplest solution.

Do I need to install something or just use the header file ?

Windows 10 platform

Used #include "libusb.h" in code with file in project folder. (changed .h to .txt to attach)
libusb.txt

The Main Program: (changed .cpp to .txt to attach)
main.txt

Errors:

||=== Build: Debug in USB-test (compiler: GNU GCC Compiler) ===|
obj\Debug\main.o||In function main':| C:\----- Herbs -----\USB-test\main.cpp|14|undefined reference to libusb_init@4'|
C:----- Herbs -----\USB-test\main.cpp|19|undefined reference to libusb_set_debug@8'| C:\----- Herbs -----\USB-test\main.cpp|20|undefined reference to libusb_get_device_list@8'|
C:----- Herbs -----\USB-test\main.cpp|29|undefined reference to libusb_free_device_list@8'| C:\----- Herbs -----\USB-test\main.cpp|30|undefined reference to libusb_exit@4'|
obj\Debug\main.o||In function Z8printdevP13libusb_device':| C:\----- Herbs -----\USB-test\main.cpp|36|undefined reference to libusb_get_device_descriptor@8'|
C:----- Herbs -----\USB-test\main.cpp|46|undefined reference to libusb_get_config_descriptor@12'| C:\----- Herbs -----\USB-test\main.cpp|66|undefined reference to libusb_free_config_descriptor@4'|
||error: ld returned 1 exit status|
||=== Build failed: 9 error(s), 0 warning(s) (0 minute(s), 0 second(s)) ===|

[diabolo38]

you have to add the dll or lib to linker option additional lib adn it shall do

[dickens]

As mentioned, you need to link against the libusb .dll or .lib. How you do this is specific to your build toolset.