Re: [gentoo-embedded] cross building into custom SYSROOT with non root user ?

[Joakim Tjernlund]

Joakim Tjernlund <joakim.tjernlund@×××××××××.se> wrote on 2013/10/22 
20:37:52:

> From: Joakim Tjernlund <joakim.tjernlund@×××××××××.se>
> To: gentoo-embedded@l.g.o,
> Date: 2013/10/22 20:38
> Subject: Re: [gentoo-embedded] cross building into custom SYSROOT with
non root user ?
>
> Peter Stuge <peter@×××××.se> wrote on 2013/10/22 04:35:52:
> >
> > Joakim Tjernlund wrote:
> > > I am trying to get this old dream to fly again:
> > > Building a root fs in my own sysroot (other that /usr/CHOST ) as a
> normal user
> >
> > Yay, that would be very nice.
> >
> >
> > > I could not even build glibc:
> > >  > SYSROOT=/usr/local/src/X-5000/root
> > > PKGDIR=/usr/local/src/X-5000/overlay/packages
> > > DISTDIR=/usr/local/src/X-5000/overlay/distfiles
> > > ROOT=/usr/local/src/X-5000/root emerge-x86_64-tm-linux-gnu -a
--nodeps 
>
> > > sys-libs/glibc
> > > ....
> > >    /usr/bin/install: cannot change ownership of
> > >
>
'/usr/x86_64-tm-linux-gnu/tmp/portage/sys-libs/glibc-2.17/image//usr/lib/misc/glibc/pt_chown': 

> Operation not permitted
> >
> > pt_chown is a bit of a special case and it does come with an --enable
> > switch in configure. Did you try using --disable-pt_chown ? I guess
> > the program isn't really needed in an embedded system and besides
> > "It is not built by default because systems using the Linux kernel
> > are commonly built with the `devpts' filesystem enabled and mounted
> > at `/dev/pts', which manages pseudo-terminal ownership automatically."
> >
> > glibc.git/login/Makefile hardcodes the -m 4755 parameter to install.
> > I can imagine that a few system packages would take such liberties,
> > but hopefully it isn't strictly neccessary if we can specify
> > carefully what we actually want to build.
> >
> >
> > > I got fakeroot installed but seems like emerge ignores that somehow.
> > > Is this just a futile dream still?
> >
> > Dunno - since you have the setup maybe you can try disabling pt_chown
> > and see how far that takes you? I'm very interested in your results.
>
> FEATURES=fakeroot seems broken (or some profile data is missing)
> However I got a bit further, doing just:
> ./sysroot-ebuild /usr/portage/sys-apps/busybox/busybox-1.21.1.ebuild
> --debug install
> fails too until one add
>  PORTAGE_INST_UID=$(id -u)
>  PORTAGE_INST_GID=$(id -g)
> somehow these are unset doing cross builds so install thinks it should
> change owner to root.
> Add this to cross-emerge? How about adding an explicit cross-ebuild too?
>
> BTW, cat sysroot-ebuild:
> : ${CROSS_CMD:=ebuild}
> CHOST=x86_64-tm-linux-gnu
> PORTAGE_INST_UID=$(id -u)
> PORTAGE_INST_GID=$(id -g)
> export PORTAGE_INST_UID PORTAGE_INST_GID
> #SYSROOT=/usr/local/src/X-5000/root
> #PORTAGE_CONFIGROOT=/usr/local/src/X-5000/configroot
> #export SYSROOT PORTAGE_CONFIGROOT
>
> export CROSS_CMD CHOST
> cross-emerge "$@"
>
>  Jocke

See also bug:
  https://bugs.gentoo.org/show_bug.cgi?id=489016
hopefully someone can solve the fakeroot problem too