TMS320F2800157: How to generate a preprocessor macro for filename

Hello Dan,

I was able to build a project with this macro without an issue, was there a specific error you were getting or was the program not using this macro as expected when you ran it?

Best regards,

Omer Amir

I'm seeing:

"../empty_driverlib_main.c", line 208: warning #225-D: function "__builtin_strrchr" declared implicitly

Hello Dan,

Can you show me the section of code where it's being used? That way I can try to replicate it on my side.

Best regards,

Omer Amir

There's not much to it

    #define __FILENAME__ (__builtin_strrchr(__FILE__, '/') ? __builtin_strrchr(__FILE__, '/') + 1 : __FILE__)

    printf("FILENAME: %s\r\n", __FILENAME__);
    printf("FILE: %s\r\n", __FILE__);

And the error

**** Build of configuration CPU1_LAUNCHXL_FLASH for project empty_driverlib_project ****

"C:\\ti\\ccs1240\\ccs\\utils\\bin\\gmake" -k -j 12 all -O 
 
Building file: "../empty_driverlib_main.c"
Invoking: C2000 Compiler

...

"../empty_driverlib_main.c", line 212: warning #225-D: function "__builtin_strrchr" declared implicitly
"../empty_driverlib_main.c", line 212: warning #43-D: operand types are incompatible ("int" and "char *")
Finished building: "../empty_driverlib_main.c"

Hi Dan,

When I tried using the macro like you showed, there was no builtin_strrchr function. What header file did you include this from? I used stdio.h and string.h, but I could not find what header file has this exact function name (I used strchr and it built without a problem). You can do CTRL+Click on the function name to see where it's being called from, if you don't know offhand.

Best regards,

Omer Amir

Yes, I agree this builtin function doesn't appear to exist in the C2000 compiler. This is a function provided by gcc, and is not being included from any header. I don't necessarily need this exact function, I just need a way to get the preprocessor to generate filenames to use in our logs. 

Hi Dan,

Can you instead try using the alternate versions of functions that are provided by TI or generic libraries/headers that are provided by CCS? Let me know if you have problems with this.

Best regards,

Omer Amir

Yes, I'm fine using alternatives, but I'm not sure what they are. Can you please point me to them?

Hello Dan,

These are the two similar-looking functions I found in string.h:

Best regards,

Omer Amir