On Fri, Jul 11 2014, jhcha54008 <jhcha54...@free.fr> wrote:
> As stated in http://cmrg.fifthhorseman.net/ticket/80 : in a debirf instance 
> built with
> ROOT_BUILD=false, ldconfig and ldd are not the fully functional executables 
> but the
> scripts which come with fakechroot. There is no /etc/ld.so.cache.
>
> As a result, softwares which rely on /etc/ld.so.cache (and paths in 
> /etc/ld.so.conf.d/*
> files) to find their libraries may break when run in a debirf instance, 
> e.g. fakechroot : in a booted debirf instance
>
> # dpkg -l fakechroot
> ||/ Name        Version   Architecture  Description
> +++-===========-=========-=============-===========================================
> ii  fakechroot  2.17.2-1  all           gives a fake chroot environment - 
> utilities
> # FAKECHROOT_DETECT=1 fakechroot echo
> fakechroot: preload library not found, aborting.

Just for clarification, the above error comes from running fakechroot on
a booted debirf instance?

> diff -Naur a/usr/share/debirf/modules/z1_clean-root 
> b/usr/share/debirf/modules/z1_clean-root
> --- a/usr/share/debirf/modules/z1_clean-root  2014-07-09 22:28:14.000000000 
> +0200
> +++ b/usr/share/debirf/modules/z1_clean-root  2014-07-09 22:37:49.000000000 
> +0200
> @@ -28,3 +28,16 @@
>  
>  # setup dynamically updated /etc/mtab
>  ln -sf /proc/mounts "$DEBIRF_ROOT/etc/mtab"
> +
> +# remove diversions added by debootstrap
> +# (debootstrap 1.0.60, function install_fakechroot_tools,
> +# file /usr/share/debootstrap/functions lines 1397-1582 )
> +if [ "$ROOT_BUILD" = 'false' ]; then
> +    debirf_exec dpkg-divert --remove /sbin/ldconfig
> +    mv -f "$DEBIRF_ROOT/sbin/ldconfig.REAL" "$DEBIRF_ROOT/sbin/ldconfig"
> +    debirf_exec dpkg-divert --remove /usr/bin/ldd
> +    mv -f "$DEBIRF_ROOT/usr/bin/ldd.REAL" "$DEBIRF_ROOT/usr/bin/ldd"
> +fi
> +
> +# setup ld.so cache
> +/sbin/ldconfig -r "$DEBIRF_ROOT"

I think it would good to have more comments around these snippets to
describe why all this is necessary.

jamie.

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