Re: [Tinycc-devel] Difficulty of adding weak symbol attributes?

[grischka]

Manuel Simoni wrote:
> Hi,
>
> I'm thinking about adding support for GCC weak symbol attributes under
> ELF to TCC.
>
> Since the linker already seems to support them, it looks like the only
> changes needed are:
> - extending the parsing of __attribute__ to recognize weak symbols,
> - adding a boolean to AttributeDef to mark weak symbols,

Current implementation uses bits, not booleans.  Basically this is because
as a kludge the sym->r field is abused to store (part of) AttributeDef.

> - and tweaking ELF generation a bit to emit the weak symbol information.
>
> Is there any other stuff that makes this more complex, that I've overlooked?

Maybe not.  As always, please push patches on our "mob" branch ;)

--- grischka