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avoid linking dead functions with TMS470 5.1.4 and TI-COFF

Gilboa Shveki
Prodigy 260 points

hi

I'm trying to  realize why compiler/linker doesnt drop the unreferenced symbols, and the only way i can do that is with --gen_func_subsections.

however, i dont want to use the subsection option, is there any other flag I can use in order to not link the unreferenced symbols?

working with TMS470 version 5.1.4, eabi, TI-COFF

thanks

  • 0
    TI__Guru**** 245040 points

    Gilboa Shveki said:
    working with TMS470 version 5.1.4, eabi, TI-COFF

    That is inconsistent.  COFF object file format is available only when using the older ABI with the option --abi=ti_arm9_abi.  ELF object file format is available only when using the new ABI with the option --abi=eabi.  For now, I presume you use --abi=ti_arm9_abi and COFF.

    Gilboa Shveki said:
    is there any other flag I can use in order to not link the unreferenced symbols?

    Not when you use --abi=ti_arm9_abi and COFF.  The option --gen_func_subsections is the only method.

    Can you change to --abi=eabi and ELF?  If so, then default behavior of the tools is to not keep functions which are never called.

    Thanks and regards,

    -George

  • 0 in reply to George Mock
    TI__Prodigy 260 points
    my bad, i meant that i use --abi=ti_arm9_abi.

    moving to newer eabi and ELF is a huge effort as we have lot of dependencies on this structure.
  • 0 in reply to Gilboa Shveki
    TI__Guru**** 245040 points

    Please consider using the technique described in the ARM compiler manual section titled Generate List of Dead Functions.

    Thanks and regards,

    -George