关于使用rga库中出现的报错

在连接过程中报一下错误

1. Scanning dependencies of target rk3588_rga_demo
   
2. [ 50%] Building C object CMakeFiles/rk3588_rga_demo.dir/main.c.o
   
3. [100%] Linking C executable rk3588_rga_demo
   
4. /usr/bin/ld: CMakeFiles/rk3588_rga_demo.dir/main.c.o: in function `main':
   
5. main.c:(.text.startup+0x2c): undefined reference to `get_bpp_from_format'
   
6. /usr/bin/ld: main.c:(.text.startup+0x4c): undefined reference to `get_bpp_from_format'
   
7. /usr/bin/ld: main.c:(.text.startup+0xd8): undefined reference to `get_buf_from_file'
   
8. collect2: error: ld returned 1 exit status
   
9. make[2]: *** [CMakeFiles/rk3588_rga_demo.dir/build.make:103：rk3588_rga_demo] 错误 1
   
10. make[1]: *** [CMakeFiles/Makefile2:95：CMakeFiles/rk3588_rga_demo.dir/all] 错误 2
    
11. make: *** [Makefile:103：all] 错误 2

复制代码本人只使用一个librga库，对照librga的例程来写的，请教一下大概是什么方向出现问题了？