C51: INDENTIFY UNCALLED LIBRARY ROUTINES

Information in this article applies to:

• C51 Version 8

QUESTION

I have an application where I am getting several Linker warnings:

*** WARNING L16: UNCALLED SEGMENT, IGNORED FOR OVERLAY PROCESS
    SEGMENT: ?PR?_EPROMWRITE?I2C

It appears that the segments refer to some library code that is indeed not called. Is there a way to verify that?

Also what do I need to do to remove these warnings.

ANSWER

You can verify the usage of functions using the linker cross reference listing section which is enabled in µVision under Project - Options - Listing - Linker Listing - Cross Reference.

For libraries it is important that each function that can be used individually gets its own source module. Structure your library this way to remove the warnings.

MORE INFORMATION

• Refer to Listing (MAP) File in the LX51 User's Guide.
• Refer to IXREF in the LX51 User's Guide.

SEE ALSO

• GENERAL: HOW TO STRUCTURE MODULES IN A LIBRARY

Last Reviewed: Monday, January 08, 2007