Fix for the /opt/bin/update-alternatives problem!!!

[sollie]

0a: ipkg-opt install uclibc-opt

0b: ipkg-opt install busybox-links

1: change first line (/opt/bin/update-alternatives):
- nano /opt/bin/update-alternatives
- #!/bin/sh ---> #!/opt/bin/bash

2: ln -s /opt/bin/busybox sort /opt/bin/sort

3: ln -s /opt/bin/busybox dirname /opt/bin/dirname

4: /opt/lib/ipkg/info/busybox-links.postinst

When you get this error:

head: error while loading shared libraries: head: symbol vprintf, version GLIBC_2.0 not defined in file libc.so.6 with link time reference update-alternatives: Error: cannot register alternative [ to /opt/bin/[ since it is already registered to

Do this: nano /opt/bin/update-alternatives and change tho folowing line:

local olink=`head -n 1 $ad/$name` ---> local olink=`$IPKG_OFFLINE_ROOT/opt/bin/busybox head -n 1 $ad/$name`


Sollie.

[Rejan]

Hi Sollie and thanx for the effort!

The second and third commands didn't work, already existed files.

The fourth gave this error:

head: error while loading shared libraries: head: symbol vprintf, version GLIBC_2.0 not defined in file libc.so.6 with link time reference
update-alternatives: Error: cannot register alternative [ to /opt/bin/[ since it is already registered to

Still doesn't work but it created the files in /opt/lib/ipkg/alternatives

Rejan.

[sollie]

Did you install uclibc-opt?

[sollie]

The second and third commands didn't work, already existed files.

I had that also.

Test:
- rm /opt/bin/sort
- sort
- ln -s /opt/bin/busybox sort /opt/bin/sort
- sort

You will see it workes.

[Rejan]

I did as you described and installed uclibc-opt

Still gets:

head: error while loading shared libraries: head: symbol vprintf, version GLIBC_2.0 not defined in file libc.so.6 with link time reference

Seems to hang aswell... break it with ctrl-c

Rejan.

[pvarela]

Hi Sollie,

I've the same problems as reported by Rejan, lots of erros as below:

head: error while loading shared libraries: head: symbol vprintf, version GLIBC_2.0 not defined in file libc.so.6 with link time reference
update-alternatives: Error: cannot register alternative sysctl to /opt/sbin/sysctl since it is already registered to

How can we solve this?

Regards,

PVarela

[Rejan]

The update-alternatives defaults the "head" command to old busybox from /apps/bin hence the error:

head: error while loading shared libraries: head: symbol vprintf, version GLIBC_2.0 not defined in file libc.so.6 with link time reference update-alternatives: Error: cannot register alternative [ to /opt/bin/[ since it is already registered to

Workaround:

Edit row in /opt/bin/update-alternatives from:

local olink=`head -n 1 $ad/$name`

to:

local olink=`$IPKG_OFFLINE_ROOT/opt/bin/busybox head -n 1 $ad/$name`


And then run:

/opt/lib/ipkg/info/busybox-links.postinst


Rejan.

[sollie]

Rejan, is this possible (step 3a)?:

ln -s /opt/bin/busybox head /opt/bin/head

[Rejan]

Hi Sollie, tried ln -s /opt/bin/busybox head /opt/bin/head but got file exist, even after rm /opt/bin/head

Editing the the file /opt/bin/update-alternatives with qualified path to head was the thing that helped.

After editing I did the /opt/lib/ipkg/info/busybox-links.postinst, checked everything and did a ipkg upgrade and all linked well and works again.

Rejan.

[sollie]

Hi Sollie, tried ln -s /opt/bin/busybox head /opt/bin/head but got file exist, even after rm /opt/bin/head

Thats what it says all the time, but its making the file.

Sollie.

[Rejan]

Hi Sollie, even though the file is made, the postinst-file didn't work until I did a fully qualified path in update_alternatives.

The link still defaults to the old busybox, easy way to test is to write the command: head-? and check versioninfo on Busybox. That was how I found out that it defaulted wrong version of Busybox.

[sollie]

K, thanks.

Sollie.

[Faw]

Ok, I've tried everything time to ask.

I have the same problem, syntax error in update-alternatives.
I tried everything on this post, and still nothing.

Right now, if I type 'head -?' I get the 'error while loading shared libraries'
if I type '/opt/bin/head -?' I get 'Busybox v1.7.2 blah,blah,blah' so I guess that's ok.

I changed the /opt/bin/update-alternatives line from:
local olink=`head -n 1 $ad/$name`
to:
local olink=`/opt/bin/busybox head -n 1 $ad/$name` and
local olink=`/opt/bin/head -n 1 $ad/$name`

and neither worked. Help please?

BTW, 'ln -s /opt/bin/busybox head /opt/bin/head' gave me an error message, 'ln -s /opt/bin/busybox /opt/bin/head' worked ok.

[Rejan]

Did you use full path as I described it:
local olink=`$IPKG_OFFLINE_ROOT/opt/bin/busybox head -n 1 $ad/$name`

Also

'ln -s /opt/bin/busybox head /opt/bin/head' gave me an error message, 'ln -s /opt/bin/busybox /opt/bin/head' worked ok.

The last one I think links busybox to the command /opt/bin/head instead of command '/opt/bin/busybox head' to '/opt/bin/head' which seems like a bad idea. So the linkname for you will be wrong according to syntax, or?

Usage: ln [OPTION] TARGET... LINK_NAME|DIRECTORY

Rejan.

[Gizmo1007]

Just to confirm,

The problem is "Syntax error" comes up when installing / running some busybox commands particularly at configuration of ipkg installs correct?

when you complete the tasks as defined by Sollie and Rejan is the expected output as per below?

update-alternatives: Linking //opt/sbin/losetup to /opt/bin/busybox
update-alternatives: Linking //opt/sbin/lsmod to /opt/bin/busybox
update-alternatives: Linking //opt/sbin/mkswap to /opt/bin/busybox
update-alternatives: Linking //opt/sbin/modprobe to /opt/bin/busybox
update-alternatives: Linking //opt/sbin/pivot_root to /opt/bin/busybox
update-alternatives: Linking //opt/sbin/rdate to /opt/bin/busybox
update-alternatives: Linking //opt/sbin/rmmod to /opt/bin/busybox
update-alternatives: Linking //opt/sbin/route to /opt/bin/busybox
update-alternatives: Linking //opt/sbin/start-stop-daemon to /opt/bin/busybox
update-alternatives: Linking //opt/sbin/swapoff to /opt/bin/busybox
update-alternatives: Linking //opt/sbin/swapon to /opt/bin/busybox
update-alternatives: Linking //opt/sbin/sysctl to /opt/bin/busybox

One suggestion for those of you struggling to get this going is to do an install of uclibc-opt first, then reinstall busybox and then do the edits per sollie's info