[lttng-dev] Syntax error running lttng

Paul Coward paul at triplanets.com
Wed Jun 2 01:40:04 EDT 2021


Thank you for the response.

I have it installed on a small ARM computer that does not feature many
tools, specifically file & which are missing.

I don't have any shell aliases and the output of find is:
    ~ # find / -name "lttng" 2>/dev/null
    ~ #
Limiting it to finding files is only the one:
    ~ # find / -name "lttng" -type f 2>/dev/null
    ~ #

head -n 10 /mnt/sd1/modulesLTTNG/lttng/usr/local/bin/lttng
    outputs binary, examining it on the build computer shows it is an ELF
executable built for ARM

I didn't set up the shell so that could be questionable, but I'm not sure
exactly how.

I couldn't find that error message in the lttng source but to me it looked a
little like errors I have seen from libXML (possibly reaching for straws).

The error message looks like it is trying to read some sort of configuration
file and failing.

This is a link to the config.log

I don't have the make output available at the moment but I can regenerate it
tomorrow if it will help.

-----Original Message-----
From: Jonathan Rajotte-Julien <jonathan.rajotte-julien at efficios.com> 
Sent: Wednesday, 2 June 2021 04:56
To: public at triplanets.com
Cc: lttng-dev at lists.lttng.org
Subject: Re: [lttng-dev] Syntax error running lttng


On Tue, Jun 01, 2021 at 10:48:13AM +1000, Merlin via lttng-dev wrote:
> Hi,
> I have compiled LTTNG for ARM but when I try to run the executable, I 
> get this error:

Do you have any of the logs for the lttng-tools project?

That would be `config.log` and the output from `make` and `make install`

> lttng: line 1: syntax error: unexpected "("

Hmmm that does not look like an error from a elf executable.

Do you have any bash or shell alias for the lttng command?

Please provide the output of the following commands:
  $ file $(which lttng)
  $ head -n 10 $(which lttng)

> lttng-sessiond

If this happens also on the `lttng-sessiond` via command line but works
using a service, it would point to weird shell setup.
>   all produce the same error.
> There were no compiler errors.  I am at a loss to understand what it 
> is complaining about from the message.

Me too.

> Modules seem to load fine.

Modules are loaded by the lttng-sessiond executable. Here only the CLI
executable seems to be having some problem.

Jonathan Rajotte-Julien

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