[lttng-dev] Problem using UST with PHP

Mathieu Desnoyers mathieu.desnoyers at efficios.com
Tue Mar 13 17:39:23 EDT 2012

* Ettore Del Negro (ettore at ettoredelnegro.me) wrote:
> Hello,
> i'm trying to add a tracepoint in PHP-5.3.8/Zend/zend.c and i'm getting this (linking) error:
> gcc -I/usr/include -g -fvisibility=hidden -O0 -Wall ext/date/.libs/php_date.o 
> […]
>  -lcrypt /usr/lib/liblttng-ust.so /usr/lib/liblttng-ust-tracepoint.so -lrt /usr/lib/liburcu-bp.so /usr/lib/liburcu-common.so -luuid -lpthread -ldl   
> Zend/.libs/zend.o:(__tracepoints+0x18): undefined reference to `__tracepoint_provider_php_zend'
> collect2: ld returned 1 exit status
> make: *** [sapi/fpm/php-fpm] Error 1
> I followed exactly the doc/examples/easy-ust example and added -llttng-ust in PHP's Makefile.
> I'm using lttng-ust-2.0.0-rc2 and userspace-rcu-0.6.7 .
> What am i missing?


Could you please provide the diff of your modifications to the zend
sources, along with c/h files added, and your build system
modifications ?



> Regards,
> Ettore
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Mathieu Desnoyers
Operating System Efficiency R&D Consultant
EfficiOS Inc.

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