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

[Romain Naour]

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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