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Bug#801688: flash-kernel fails with readlink: invalid option -- 'm'

Hey Ben,

On 13-10-15 18:57, Ben Hutchings wrote:
On Tue, 2015-10-13 at 15:49 +0200, Olliver Schinagl wrote:
Package: flash-kernel
Version: 3.35+deb8u1
Severity: important
Tags: d-i

Dear Maintainer,

when installing flash-kernel on a very basic and minimal system (created with
multistrap) flash-kernel fails to install.

While flash-kernel does seem to work and is installed afterwards this makes
automated installation via multistrap impossible.

My packages from multistrap looks like this, which as you can see is fairly
packages=f2fs-tools connman wpasupplicant iptables dropbear avahi-daemon
libv4l-0 lsb-invalid-mta ca-certificates mtd-utils busybox apt usbmount udisks2

I guess adding some dialog dependancy is probably the quickest fix, but I don't
think is the best solution.

root@system-02880482d32a:~# apt-get install flash-kernel
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following NEW packages will be installed:
0 upgraded, 1 newly installed, 0 to remove and 25 not upgraded.
Need to get 0 B/34.2 kB of archives.
After this operation, 76.8 kB of additional disk space will be used.
debconf: delaying package configuration, since apt-utils is not installed
Selecting previously unselected package flash-kernel.
(Reading database ... 14355 files and directories currently installed.)
Preparing to unpack .../flash-kernel_3.35+deb8u1_armhf.deb ...
Unpacking flash-kernel (3.35+deb8u1) ...
Setting up flash-kernel (3.35+deb8u1) ...
debconf: unable to initialize frontend: Dialog
debconf: (No usable dialog-like program is installed, so the dialog based
frontend cannot be used. at /usr/share/perl5/Debconf/FrontEnd/Dialog.pm line
debconf: falling back to frontend: Readline
readlink: invalid option -- 'm'

I think the problem is that you're using busybox instead of coreutils
(which is essential and therefore doesn't have to be explicitly
depended on).
Depends on how you install your system I suspect. I used multistrap with a list of packages (which pulls the bare minimal system in, of which busybox or core-utils don't appear to be dependancies) and that leaves me with a fully working debian system.

I couldn't find where readlink or readline is being called in flash-kernel or its scripts, but for some reason readlink -m is being called which may work with the core-utils, but not with busybox.

Having flash-kernel be functional with atleast busybox doesn't seem like a strange requirement. Flash-kernel is for embedded systems and thus having a bare minimal embedded system isn't all out ot the ordinary :)



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