Re: [gentoo-user] What is libgcc_s.so.1?

[Alan McKinnon <alan.mckinnon@gmail.com>]

On Wed, 21 Nov 2012 13:25:27 -0800
Grant <emailgrant@gmail.com> wrote:

> I'm building a minimal Gentoo system but I always get the following
> error when I try to chroot into the final system:
> 
> /bin/bash: error while loading shared libraries: libgcc_s.so.1:
> cannot open shared object file: No such file or directory
> 
> I ran 'equery
> b /usr/lib64/gcc/x86_64-pc-linux-gnu/4.5.4/libgcc_s.so.1' on one of
> my conventionally-built Gentoo systems and the file isn't determined
> to belong to any package.
> 
> Where does this file come from and how can I add it to my
> manually-built Gentoo system?
> 
> I'm following these instructions to build the minimal Gentoo system:
> 
> http://judepereira.com/blog/going-embedded-with-mgentoo/
> 
> ROOT=/mounted/ emerge -auvND baselayout uclibc bash dropbear pam udev
> iptables coreutils nano util-linux shadow kbd net-tools grep procps
> gzip sed findutils mawk htop
> 
> - Grant

It comes from gcc. The ebuild install to /usr/lib, not /usr/lib64 like
you searched for (one dir is a symlink to the other to make stuff work.)

The only reference to libgcc_s in the ebuild comes from the toolchain
eclass:

               # libgcc_s  and, with gcc>=4.0, other libs get installed in multilib specific locations by gcc
                # we pull everything together to simplify working environment
                if has_multilib_profile ; then
                        case $(tc-arch) in
                                amd64)
                                        mv "${D}${LIBPATH}"/../$(get_abi_LIBDIR amd64)/* "${D}${LIBPATH}"
                                        mv "${D}${LIBPATH}"/../$(get_abi_LIBDIR x86)/* "${D}${LIBPATH}"/32
                                ;;
                                ppc64)
                                        # not supported yet, will have to be adjusted when we
                                        # actually build gnat for that arch
                                ;;
                        esac
                fi

And that looks like it needs a multilib profile.

Dunno how much if any that will help you.

-- 
Alan McKinnon
alan.mckinnon@gmail.com