[lttng-dev] [PATCH 1/1] Disable liblttng-ust-dl if dlinfo is not available in C library.

[Simon Marchi]

Hi Romain,

It seems like with that commit, dlinfo is not found even on a glibc
based system, where it is present.

See https://bugs.lttng.org/issues/778

Do you have a suggestion to fix that ?

Simon

On 7 April 2014 16:46, Romain Naour <romain.naour at openwide.fr> wrote:
> Hi Mathieu,
>
> Le 07/04/2014 22:42, Mathieu Desnoyers a écrit :
>
>> Merged into master and stable-2.4, thanks!
>>
>> Mathieu
>
> You're welcome.
>
> Best regards,
> Romain Naour
>
>
>>
>> ----- Original Message -----
>>>
>>> From: "Romain Naour" <romain.naour at openwide.fr>
>>> To: lttng-dev at lists.lttng.org
>>> Cc: "Romain Naour" <romain.naour at openwide.fr>
>>> Sent: Sunday, April 6, 2014 5:02:41 PM
>>> Subject: [lttng-dev] [PATCH 1/1] Disable liblttng-ust-dl if dlinfo is not
>>> available in C library.
>>>
>>> According to uClibc commit [1], dlinfo is not available.
>>> To be able to use LTTng UST with uClibc, we need to disable
>>> the Dynamic Linker Tracing functionality [2].
>>>
>>> [1]
>>>
>>> http://git.uclibc.org/uClibc/commit/?id=f3c9dc499c5c787ddd8c4320f2d44d2ae6e40c22
>>> [2] http://lists.lttng.org/pipermail/lttng-dev/2014-February/022423.html
>>>
>>> Signed-off-by: Romain Naour <romain.naour at openwide.fr>
>>> ---
>>>   Makefile.am  | 5 ++++-
>>>   configure.ac | 3 +++
>>>   2 files changed, 7 insertions(+), 1 deletion(-)
>>>
>>> diff --git a/Makefile.am b/Makefile.am
>>> index b79d2dd..c907ff1 100644
>>> --- a/Makefile.am
>>> +++ b/Makefile.am
>>> @@ -4,11 +4,14 @@ SUBDIRS = . include snprintf libringbuffer
>>> liblttng-ust-comm \
>>>                 liblttng-ust \
>>>                 liblttng-ust-ctl \
>>>                 liblttng-ust-fork \
>>> -               liblttng-ust-dl \
>>>                 liblttng-ust-libc-wrapper \
>>>                 liblttng-ust-cyg-profile \
>>>                 tools
>>>   +if HAVE_DLINFO
>>> +SUBDIRS += liblttng-ust-dl
>>> +endif
>>> +
>>>   if BUILD_JNI_INTERFACE
>>>   SUBDIRS += liblttng-ust-java liblttng-ust-jul
>>>   endif
>>> diff --git a/configure.ac b/configure.ac
>>> index b04d4e3..de6300e 100644
>>> --- a/configure.ac
>>> +++ b/configure.ac
>>> @@ -146,6 +146,9 @@ AC_C_INLINE
>>>   AC_FUNC_MALLOC
>>>   AC_CHECK_FUNCS([gettimeofday munmap socket strerror strtol sched_getcpu
>>>   sysconf])
>>>   +AC_CHECK_FUNCS([dlinfo])
>>> +AM_CONDITIONAL([HAVE_DLINFO], [test "${ac_cv_func_dlinfo}" = "yes"])
>>> +
>>>   CFLAGS="-Wall $CFLAGS"
>>>     # URCU
>>> --
>>> 1.9.0
>>>
>>>
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>>> lttng-dev mailing list
>>> lttng-dev at lists.lttng.org
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>>>
>
>
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