[ltt-dev] Trying to compile lttng-tools

[David Goulet]

Hi Daniel,

Yep, we are aware of that problem and will be fix in the next release.

Note that UST is not yet ready for the lttng-tools integration... This 
will come in a very short term probably at release version 0.14. You can 
still use basic trace command of lttng-tools to control UST.

But, for now, you can fix that quickly by changing this to 
"libustctl/Makefile.am" from the git source of ust.

-       $(top_builddir)/libustcomm/libustcomm.la
+       $(top_builddir)/libustcomm/libustcomm.la \
+       $(top_builddir)/snprintf/libustsnprintf.la

Recompile and install ust and should be fine :)

Don't hesitate for any other problems/comments.

Cheers
David

On 11-05-05 12:32 PM, Daniel U. Thibault wrote:
> I'm trying to compile the latest lttng-tools (lttng-tools-9624336, 2011-05-04)
> and keep running into a weird error.
>
> So far, ltt-control (cdfcd01, 2011-04-13), userspace-rcu 0.5.4 and ust 0.12 are
> downloaded from git.lttng.org, compiled and installed.  I download
> lttng-tools-9624336 from the same source, run ./bootstrap without any unusual
> results, but ./configure fails with:
>
> checking for ustctl_connect_pid in -lustctl... no
> configure: error: Cannot find libustctl. Use LDFLAGS=-Ldir to specify its
> location.
>
> The config.log hints at the problem's source:
>
> configure:4421: checking for ustctl_connect_pid in -lustctl
> configure:4446: gcc -o conftest -g -O2   conftest.c -lustctl  -luuid -lpopt
> -lpthread>&5
> //usr/local/lib/libustctl.so: undefined reference to `ust_safe_snprintf'
> collect2: ld returned 1 exit status
>
> libustctl (.so.0.0.0, .so.0, .so, .a, .la) is in /usr/local/lib/ and contains
> 'ust_safe_snprintf' in its hex code.  Recall that UST 0.12 compiled without a
> hitch ('ust_safe_snprintf' appears in usterr.h, ust_snprintf.h, snprintf.c, and
> tests/snprintf/prog.c, as fas as source goes).  Well, not completely true: for
> some weird reason, /usr/local/lib/libust.so ended up containing these four
> lines:
>
> /* GNU ld script
>     Use the shared library, but the link with initializer too */
> OUTPUT_FORMAT(elf64-x86-64)
> GROUP ( libust.so.0 libust-initializer.o )
>
> I replaced it with the expected symbolic link to /usr/local/lib/libust.so.0.0.0
> (the lttng-tools problem is the same before and after this fix)
>
> If it matters, I'm running a virtual Ubuntu 10.10 64-bits machine.
>
> I'm at a loss as to how to fix this, and there's nothing on the Web about this
> configure error (except a short thread on this very mailing list).
>
>
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-- 
David Goulet
LTTng project, DORSAL Lab.

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