Re: Help: GOLD unable to find logf() in libm.so when sysroot is enabled

[Nick Clifton <nickc at redhat dot com>]

Hi Ian,

> gold only warns about undefined references from shared libraries in
> specific circumstances.  See
> Symbol_table::warn_about_undefined_dynobj_symbol in symtab.cc.  I
> think that particularly relevant here is that gold does not warn about
> an undefined reference in a shared library that it finds in a "system
> directory", which basically means a directory found in the sysroot.
> I'm guessing that that is somehow the difference between your two
> links.  But I don't know why the definition of logf found in libm.so
> is not satisfying the references from the other shared libraries.
> Could there be any versions involved?

No.  I checked and the reference and definition are both unversioned.

I did find however that I spoke too soon about this problem not being 
fixed in the mainline sources.  It seems that somehow the bug is fixed.
I am currently checking to make sure that this is correct and not just
me mucking up the testing again, but using a VM makes the whole process
very slow.

Thanks very much for taking a look at the problem though.

Cheers
  Nick