Re: Libtool can't find libgcc_s

[Ralf Wildenhues]

* Ethan Mallove wrote on Wed, Nov 10, 2010 at 09:02:18PM CET:
> On Wed, Nov/10/2010 07:59:38PM, Ralf Wildenhues wrote:
> > * address@hidden wrote on Wed, Nov 10, 2010 at 07:48:14PM CET:
> > > Libtool seems to get confused about where libgcc_s is, e.g.,
> > >   
> > >   $ /bin/sh ../../../libtool --tag=CXX --mode=link icpc -lgcc_s foo.c -o 
> > > a.out
> > >   libtool: link: icpc foo.c -o a.out  -lgcc_s
> > >   ld: skipping incompatible 
> > > /usr/lib/gcc/x86_64-redhat-linux/3.4.6//libgcc_s.so when searching for 
> > > -lgcc_s
> > >   ld: cannot find -lgcc_s
> > > 
> > > If I help it out with my own -L, it works:
> > > 
> > >   $ /bin/sh ../../../libtool --tag=CXX --mode=link icpc 
> > > -L/usr/lib/gcc/x86_64-redhat-linux/4.1.2/32 -lgcc_s foo.c -o a.out
> > >   libtool: link: icpc foo.c -o a.out  
> > > -L/usr/lib/gcc/x86_64-redhat-linux/4.1.2/32 -lgcc_s
> > > 
> > >   $ ../../../libtool --version
> > >   ltmain.sh (GNU libtool) 2.2.6b
> > 
> > I think the first question to ask is why are you passing -lgcc_s in the
> > first place?
> 
> I don't know.  Does libtoolize add -lgcc_s to postdeps?  The above is
> a stripped down link line that happens when I build the Open MPI trunk
> using Intel 11.0 compilers.

postdeps are only expanded by 'libtool', but you posted a libtool
command line that already included -lgcc_s, IOW, that particular
argument was not added by libtool but in the Makefile already.
You need to find out which Makefile macro set this, and since
presumably the macro was @substituted@ by some configure script,
find the configure code that set it.  Otherwise I cannot say more.

Cheers,
Ralf