Re: how to get target ldd ?

[ng@piments.com]

Yann E. MORIN wrote:
> Peter,
> All,
> 
> On Wednesday 10 June 2009 00:16:58 ng@piments.com wrote:
>> # ldd
>> -sh: ldd: not found
>> # ls -ail `which ldd`
>> 3273877 -r-xr-xr-x    1 root     root         5583 Jun  8  2009 /usr/bin/ldd
>> So it's there, it's found by which, but "not found". Clearly this is 
>> just busybox's challenged error handling spewing garbage. The question 
>> is how to debug what is really happending.
>> This error is helpful in itself since it's not even a binary, it's a 
>> script.
> 
> Running a shell script (or any other script type) first imply running a
> shell, and that shell will interpret the script.
> 
>> Binaries give : 
>> -sh: gnuplot: Permission denied
>> even though they have x permissions and are being invoked by root.
> 
> Hmmm. Sounds like a ld problem. Please run this on the target:
> # ls -l /lib/ld*
> 
> It should be marked with the 'x' bit.
> 
> I'm off to work, will look in more details tonight...
> 
> Regards,
> Yann E. MORIN.
> 

Damn! it was that simple.

chmod a+x /lib/ld* fix it. My hello.dyn and gnuplot now work.

I posted quite some time back in another thread that all my libs were 
without x perms and it got no comment. So I assumed that it was normal 
and the it was regarded as a dumb question.

So the question is: why is it installed with the wrong permissions?

I have just rebuild the toolchain and the perms look correct in sys-root.

3317406 -r-xr-xr-x 1 prof users  160750 2009-06-10 01:49 ld-2.9.so
3317408 lrwxrwxrwx 1 prof users       9 2009-06-10 01:49 ld-linux.so.3 
-> ld-2.9.so


However ldd still does not work:
# ldd gnuplot
-sh: ldd: not found
# which ldd
/usr/bin/ldd


I think what may have happened it that , having noted that nothing had x 
in /lib I added it to all libs without noting that ld was (possibly) 
already executable. When I did not get any comment on that I likely 
reverted everything including ld to -x .


I'll do more thorough testing tonight but initial evidence suggests that 
it is fixed.

It would be good to have ldd as a tool but I think that is a differenct 
problem.

It tool a long time to find something so simple but at least I can 
rebuild everything dynamic now.

Many thanks, Peter.


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