Arduino for STM32

Hi, everyone can help me?

I have project to control motors using wireless PS2 with my STM32 board
I'm using STM32F103C8T6 (blue pill). I have to try create program using PS2x_lib to my board, but always show error like this :

Arduino: 1.8.5 (Windows 10), Board: "Generic STM32F103C series, STM32F103C8 (20k RAM. 64k Flash), STLink, 72Mhz (Normal), Smallest (default)"

C:\Users\BAMZZZ\Documents\Arduino\tes\tesSTM32\CobaRemote\tesRe\TesRe\TesRe.ino:1:22: fatal error: PS2x_lib.h: No such file or directory

#include <PS2x_lib.h>

^

compilation terminated.

exit status 1
Error compiling for board Generic STM32F103C series.

This report would have more information with
"Show verbose output during compilation"
option enabled in File -> Preferences.

Please help me to solve this problem..

This means it could not find the library, so you have to install it properly.

For we google-challenged,
https://www.arduino.cc/en/guide/libraries#toc3