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Original question:

Compiler/TMS320F28379D: How to generate run time libraries and compile them through batch file

Compiler/TMS320F28379D: Getting linker issue while compiling project with custom made Flash run time library

gurusha nahar
Expert 1260 points

Part Number: TMS320F28379D
Other Parts Discussed in Thread: TMS320F28388D

Tool/software: TI C/C++ Compiler

Hi,

I have created one static library which is a flash run time library,

which has following compiler linker options:

SET COMPILER_FLAGS= -v28 -mt -ml --float_support=fpu32 --include_path="C:\ti\ccs1000\ccs\tools\compiler\ti-cgt-c2000_20.2.0.LTS\include" --include_path="C:\Users\h352524\workspace_v10\rts_TMS320F28388D_Flash_Lib" --include_path="C:/Users/h352524/workspace_v10/rts_TMS320F28388D_Ram_Lib" --include_path="C:/Users/h352524/Desktop/CGCU/C2000_F021_FlashAPI_V1.60_QT/C28x/F021DEV_C2000/API/Include/F021" --include_path="C:/Users/h352524/Desktop/CGCU/C2000_F021_FlashAPI_V1.60_QT/C28x/F021DEV_C2000/API/Include/Fapi" --advice:performance=all --define=_C28X --define=_LITTLE_ENDIAN --define=_F2838x --undefine=_CONCERTO --undefine=_F2838x_QT --undefine=_F28004x_FPGA --undefine=_F2837xD --undefine=_F2837xS --undefine=_BIG_ENDIAN --undefine=_F28004x -k -al -g --diag_warning=225 --diag_wrap=on --display_error_number --gen_func_subsections=on --abi=eabi --preproc_with_compile --preproc_dependency

And have following source file functionalitites.

auto_init
startup.c
cpy_tbl.c
pre_init.c
copy_decompress_none.c
_lock.c
args_main.c
sqrt_f32.asm
ll_aox28.asm
ll_cmp28.asm
ll_div28.asm
ll_mpy28.asm
log_f32.asm
errno.c
exit.c
frexp.c
atol.c
ctype.c
u_div28.asm
div_f32.asm
boot28.asm
ctype.h
errno.h

I have integrated this status library in my project with the other two libraries as well (flash_api and ram based), but this is creating a problem while linking. Attached is the screenshot of the error:

Also, TI_zero_init linking is a common problem I am facing while integrating this library even with the other projects. 

Kindly please help me to resolve this issue.

Regards,

Gurusha

  • 0
    TI__Guru**** 252280 points

    Those undefined symbols are functions in the compiler RTS library.  For instance, __TI_zero_init is from the file copy_zero_init.c and __c28xabi_divf is from the file fs_div28.asm.  You need to add those files to one of your RTS flash libraries.

    Thanks and regards,

    -George

  • 0 in reply to George Mock
    Expert 1260 points

    Is there any other option to use, instead of including the source files, for example, in project properties do we have any option to remove the linker issue by excluding the _TI_zero_init function.

    Also, I have one more doubt, since I am using compiler version 20.2.1.LTS and eabi output format, with these properties, could you help me to choose between the option for setting  _fp_mode={strict|relaxed}? (in the project properties-> C2000 compiler-> Optimization-> Floating point modes). Can you explain which option is better to choose? I referred to the compiler manual, spru514t but still not sure which is better? And is it also necessary to use advice_performace=all?  Because the settings are linked.

    Which is better to use? I need suggestions regarding this.

  • 0 in reply to gurusha nahar
    TI__Guru**** 252280 points

    gurusha nahar said:
    Is there any other option to use, instead of including the source files, for example, in project properties do we have any option to remove the linker issue by excluding the _TI_zero_init function.

    Please search the C28x compiler manual for the sub-chapter titled Zero Initializing Variables.

    gurusha nahar said:
    help me to choose between the option for setting  _fp_mode={strict|relaxed}

    Please search the article Floating Point Optimization for --fp_mode.

    gurusha nahar said:
    is it also necessary to use advice_performace=all?

    No.  This option causes the compiler to issue diagnostics regarding ways to improve performance.  Feel free to use it as needed.

    Thanks and regards,

    -George