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Re: Support for ELF's STT_COMMON symbol type

On Tue, Oct 09, 2007 at 04:07:53PM +0100, Nick Clifton wrote:
> Hi Daniel,
> >>  * Has a configure time option to enable the setting of the STT_COMMON 
> >>  type on symbols in generated executables.  By default this option is 
> >>disabled, so the linker should continue to work with the current crop of 
> >>loaders.
> >
> >I don't really like this :-(  Different people's builds of binutils
> >will trigger different bugs for the same target.  I suppose it's
> >reasonable, but please remove this:
> >
> >+  # XXX FIXME: Add code to test the loader here.
> >
> >Having binutils built on a new system by default produce binaries that
> >would not work on older systems would be a real pain to figure out.
> You mean always default to not generating STT_COMMON symbols unless the 
> user had explicitly requested them from the configure command line ?  OK, I 
> can do that.

I think STT_COMMON should be enabled by default. But we only
generate it when

.type foo, %common

is used. Given that gcc doesn't generate it, it should be OK.


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