Re: [Mspgcc-users] How to disable the -ffunction-sections "may affect debugging" warning.

[Grant E. <gr...@vi...>]

On 2007-03-27, Grant Edwards <gr...@vi...> wrote:
> When I use -ffunction-sections I get a warning:
>
> cc1: warning: -ffunction-sections may affect debugging on some targets
>
> I've been using -ffunction-sections for many years on many
> targets and I've never seen that warning before. 
>
> Why do I get that warning on MSP430 and not other targets?

It appears to happen for msp430-gcc because it isn't used the
ELF object format.  At least that's what gcc thinks. Here's the
code in toplev.c that generates the warning:

#ifndef OBJECT_FORMAT_ELF
  if (flag_function_sections && write_symbols != NO_DEBUG)
    warning ("-ffunction-sections may affect debugging on some targets");
#endif

Why is OBJECT_FORMAT_ELF not defined?

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