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

[Joakim Tjernlund]

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