On 2008-05-30, Sergey A. Borshch <[email protected]> wrote:
>> Just to clarify: were all of the symbols in .data and .bss
>> sections unreference? IOW, is the --gc-sections and
>> --fdata-sections feature working properly?
>
> Yes, feature working fine.
Good. :)
>> Too bad the elimination of the copy/clear code can't happen
>> automatically when size of .data or .bss is 0.
>
> Do you have any idea how to do it? I'm not. I can't find anything like
> section-wide ".required symbol_name" in ld documentation.
There is a built-in function that returns the size of a
section, and the expression parser supports lazy evaluation and
the trinary operator (?:), but I can't quite figure out a way
to "un-reference" or "un-keep" a symbol conditionally. It's a
good question for the binutils mailing list.
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