Re: ophelp: not found

[Mano_ <r.m...@sa...>]

Hi Manemannen,

try to use ldd ophelp (in your case arm-linux-ldd) or 
               objdump -x | grep Needed 

This will show you the list of dependent libraries you need to have in your
target device. 

I suppose you have missed libpopt.so in your target, as I don't see it
having mentioned in your post. 
And another thing is if at all one / some / all of the dependent libraries
are not there in standard library path such as /lib then did you use
LD_LIBRARY_PATH ?

with thanks,
V.Manoharan


manemannen wrote:
> 
> Hi guys,
> 
> I'm working on getting oprofile to work my Android Linux device. I have a
> few issues - maybe you guys can give me some expert advice since I am not
> an
> expert within this area myself.
> 
> I have cross compiled popt, binutils and oprofile for Arm architecture..so
> far so good. I transferred the binaries (ophelp, oprofiled etc) and the
> shared libraries (libopagent.so) I found to the target.
> 
> I tried to run the opcontrol script but this seems to be adapted to a
> "normal" linux kernel so I started to modify this to handle the different
> setup for Android Linux (for example /etc/mtab -> /proc/mounts).
> 
> After modification I tried to run the script again and it wants to execute
> "ophelp". Now, ophelp can not be executed :(
> If I try to execute from the shell it says: "./ophelp: not found" (yes
> x-flag is set). I figured that it was built for another platform but
> "file"
> returns:
> 
> ophelp: ELF 32-bit LSB executable, ARM, version 1 (SYSV), for GNU/Linux
> 2.6.14, dynamically linked (uses shared libs), not stripped
> 
> which seems to be correct. I then thought that I was missing some shared
> libraries. I checked ophelps dependencies and believe that it depends on
> "libc", "libld". These are located in library path on target. Although
> they
> are not the complete versions of the libraries since Google reduced them.
> Don't think that should be a problem since ophelp doesn't seem to use any
> specifics.
> 
> Note that this is the same problem for all dynamically linked executables
> (ophelp, opannotate etc). oprofiled which is a statically linked app works
> fine!
> 
> Comments? Advice? Anything..
> 
> Any help appreciated!
> /Magnus
> 
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