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CCS v4.2.4

Anuj Kulkarni
Prodigy 220 points

I am getting an error in all my code files "symbol "active" redefined: first defined in "./scan.obj"; redefined in "./comm.obj" " 

I wanted to know how can i rectify this? I am new at coding for embedded systems.

Thank you

Anuj K

  • 0
    TI__Guru**** 173310 points

    Anuj,

    The message is saying that the symbol "active" is defined more than once. Check the referenced source files scan.c and comm.c and make sure that the symbol is only defined once. It can be referenced in multiple places but there should only be one definition.

  • 0 in reply to AartiG
    Prodigy 220 points

    Aarti,

    I have defined active as a structure using union command. also defined it under #ifndef but still i am getting this error!

  • 0 in reply to Anuj Kulkarni
    TI__Guru**** 173310 points

    It is hard to pinpoint the reason for the error without recreating the error and looking at the source files. However please check this reference on guidelines for declaring and defining variables and functions which should be helpful.

  • 0 in reply to AartiG
    Prodigy 220 points

    Aarti,

    I dont mind sharing the source code, please gimme an email id on which i will mail it.

    I want the problem to be solved. so if you can please help me out.

    Thank You

    Anuj K

  • 0 in reply to Anuj Kulkarni
    TI__Guru**** 173310 points

    Anuj,

    I just sent you a friend request. After you accept it, you should be able to go to my name in your Friends list and start a conversation. This will start a private conversation between us where you can attach your source files.

    Please be sure to also specify which version of the compiler tools you are using and the complete command line which displays all the compiler options. If you are building with CCS, the build console view will display the command line which you can copy/paste.

  • 0 in reply to AartiG
    TI__Guru**** 173310 points

    An update on this for the benefit of others reading this thread:

    The project files had several variables/functions defined in header files which was then included in multiple source file causing the "symbol redefined" errors by the linker. The suggestion to fix this is to declare the variables as "extern" in the header file, and then define the variable in only one source, while the others can still reference it.