[lttng-dev] [PATCH lttng-tools] Link test utilities against urcu-bp

[Jon Bernard]

* David Goulet <dgoulet at efficios.com> wrote:
> Hi Jon,
> 
> Can you enlighten us on what setup are you using?
> 
> This symbol is used by lttng-ust which is linked with -lurcu-bp so
> lttng-tools should not have an issue here.
> 
> Are you cross-compiling ?

Nothing unusual, I'm building lttng-tools (version 2.1.8~rc8) from source
against URCU version 0.7.5 and UST version 2.1.0~rc2.  During compilation
(configure with no additional parameters), I see the following:

    make[3]: Entering directory `tests/tools/streaming'
    CC     unit_tests.o
    CCLD   unit_tests
    CC     gen-ust-events.o
    CC     tp.o
    CCLD   gen-ust-events
    /usr/bin/ld: tp.o: undefined reference to symbol 'rcu_dereference_sym'

This link error occurs on each of the gen-events targets as there is no explicit
link against urcu-bp.  I must have something different, as I'm sure you'd have
noticed this earlier.  What additional information might you need?

Cheers

-- 
Jon