µVision Build Log
Tool Versions:
IDE-Version: ¦ÌVision V5.36.0.0
Copyright (C) 2021 ARM Ltd and ARM Germany GmbH. All rights reserved.
License Information: 1 1, 1, LIC=WH7DL-02XY9-NYFV5-GSA8F-V1YVY-PRPVH
 
Tool Versions:
Toolchain:       PK51 Prof. Developers Kit  Version: 9.60.0.0
Toolchain Path:  C:\Keil_v5\C51\BIN
C Compiler:      C51.exe V9.60.0.0
Assembler:       A51.exe V8.2.7.0
Linker/Locator:  LX51.exe V4.66.99.0
Library Manager: LIBX51.exe V4.30.1.0
Hex Converter:   OHX51.exe V1.47.0.0
CPU DLL:         S8051.DLL V3.122.0.0
Dialog DLL:      DP51.DLL V2.67.0.0 
Project:
C:\Users\Administrator\Desktop\iic_oled\USB²âÊÔ\USB.c
Project File Date:  03/10/2024

Output:
Rebuild target 'Target 1'
compiling USB.c...
linking...
*** WARNING L7: MODULE NAME NOT UNIQUE
    MODULE:  .\stc_usb_cdc_8h_xdata.lib (USB)
*** ERROR L127: UNRESOLVED EXTERNAL SYMBOL
    SYMBOL:  usb_init
    MODULE:  .\Objects\USB.obj (USB)
*** ERROR L128: REFERENCE MADE TO UNRESOLVED EXTERNAL
    SYMBOL:  usb_init
    MODULE:  .\Objects\USB.obj (USB)
    ADDRESS: 1000013H
Program Size: data=9.0 xdata=0 const=0 code=23
Target not created.
Build Time Elapsed:  00:00:00