Source: Internet
Author: User

Build target ' target 1 '
Assembling STARTUP. A51 ...
Linking ...
SYMBOL:? C_start
MODULE:STARTUP.obj (? C_startup)
WARNING L2:reference made to unresolved EXTERNAL
SYMBOL:? C_start
MODULE:STARTUP.obj (? C_startup)
Program size:data=9.0 xdata=0 code=15
Creating hex file from "3_strengthen_3" ...
"3_strengthen_3"-0 Error (s), 2 Warning (s).

If you are using the C51 compiler to appear above the warning, and searched all over the internet can not find out, do you think this problem is difficult, so rare that no one can answer it?

In fact, this is only a beginner and careless person will make the mistake: did not add c files to the project!

In addition, it is possible that there are already defined functions that have not been called.

Quoted from: http://blog.163.com/[email protected]/blog/static/94930282200911240504985/


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