[uClibc] Problem with soft-float and hidden symbol in libgcc(uclibc0.9.26/gcc 3.3.4)

[Joakim Tjernlund]

> On Saturday 23 Oct 2004 18:09, Joakim Tjernlund wrote:
> > > Hi, looking back at the mailing list, this problem seems to crop up now
> > > and then. I'm creating a cross compiling toolchain from i386->ppc405
> > > using soft float.
> > >
> > > (latest toolchain build scripts from CVS - gcc 3.3.4/ uclibc 0.9.26)
> > >
> > > It all seems to work, except for the same sort of messages as in:
> > >
> > > http://www.uclibc.org/lists/uclibc/2004-March/008520.html
> > >
> > > (hidden symbol __eqdf2 referenced by DSO).
> > >
> > > I investigated a bit, and it only happens when doing a shared link. It
> > > seems to be because uclibc's libc.so and libm.so are not linked against
> > > libgcc when they are built - so they end up trying to pull in symbols
> > > from libgcc.a - which gcc objects to.
> > >
> > > I found two ways of fixing this - both involve editing the libm/Makefile
> > > and libc/Makefile "shared" targets. Basically, you either add "-lgcc_s"
> > > or "-lgcc
> > > -L/path/to/your/stagingdir/lib/gcc-lib/ppc-405-linux-uclibc/3.3.4/" to
> > > the LD command.
> >
> > Try copying the libm* files from .../uClibc/lib dir to .../staging_dir/lib
> 
> Hi, I tried this - makes no difference - the files in my uClibC/lib dir are 
> identical to those in my staging dir anyway.
> 
> Just want to point out - I do have things building and running properly now 
> using my fix (the -lgcc -L... one) - I just posted to see if this was a good 
> way to do it - and also (assuming it is :) to help other people out with the 
> same problem as it seems to come up a lot.

This looks like the bug I found, libm* was built with gcc-intial and not with gcc-final.
The -lgcc worked for me as well but that is an ugly fix. Perhaps you have to 
rebuild libm* in uClibc and then copy it to staging_dir/lib

 Jocke