RTOS/TMS320F28335: RTOS/TMS320F28335: Undefined symbol errors when I try to compile DSP/BIOS example project as C++.

Jigar Patel67

Prodigy 80 points

Part Number: TMS320F28335

Tool/software: TI-RTOS

I am trying to compile RTOS example project as C++. I am using

prog.extern("task","C++") in tcf file. still compiler is not able to recognize task function.

If I build project with C it works fine. Refer attached project.

undefined first referenced

symbol in file

--------- ----------------

task ./tskcfg.obj

error #10234-D: unresolved symbols remain

error #10010: errors encountered during linking; "RTOS_NGCB.out" not built

>> Compilation failure

makefile:141: recipe for target 'RTOS_NGCB.out' failed

gmake: *** [RTOS_NGCB.out] Error 1

gmake: Target 'all' not remade because of errors.

RTOS_NGCB.zip

Please refer attached project.

over 7 years ago

0 Jigar Patel67 over 7 years ago

Prodigy 80 points

I am reading answers on following post but It did not help me.

e2e.ti.com/.../631695

0 ToddMullanix over 7 years ago

TI__Guru* 96960 points

Hi Jigar,

What version of DSP/BIOS and CCS are you using?

When you use the "C++" in the .tcf, are you renaming your tsk.c to tsk.cpp?

Todd

0 Jigar Patel67 over 7 years ago in reply to ToddMullanix

Prodigy 80 points

CCS Version : 6.1.3
Compiler Version: 6.4.10
DSP/BIOS Version: bios_5_42_02_10

0 ToddMullanix over 7 years ago in reply to Jigar Patel67

TI__Guru* 96960 points

Did you try renaming tsk.c to tsk.cpp?

0 Jigar Patel67 over 7 years ago in reply to ToddMullanix

Prodigy 80 points

I tried to rename "tsk.c" to "tsk.cpp" it did not help. Undefined symbol error appear for "tskcfg.obj" file, which is generated by config tool. If I tried to rename "tskcfg.c" to "tskcfg.cpp", config tool generate another file with "tskcfg.c" name.

Undefined symbol error appear only if "Treat C file as C++ File" Option enable. I need this option enable because I am planning to use C++ for project.

0 ToddMullanix over 7 years ago in reply to Jigar Patel67

TI__Guru* 96960 points

I'd remove the "C++" from the .tcf file. Then add the following around the task function.

#ifdef __cplusplus
extern "C" {
#endif

Void task(...)

...

#ifdef __cplusplus
}
#endif

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RTOS/TMS320F28335: RTOS/TMS320F28335: Undefined symbol errors when I try to compile DSP/BIOS example project as C++.