<div dir="ltr">Thanks Tanu,<div> I followed your instructions. I was able to solve this problem. I had made the new function “GLOBAL”. I edited the “map-file” in src folder of pulseaudio to include the newly created function. I was also able to successfully compile my test program too.. But when I run the binary, I am getting relocation error.. ./pa_listclients_pause: relocation error: ./pa_listclients_pause: symbol pa_context_set_sink_input_paused, version PULSE_0 not defined in file libpulse.so.0 with link time reference I am not able to understand this error.. Can someone help me with this, Thanks, Sathish<div class="gmail_extra"> <div class="gmail_quote">On 20 December 2013 18:21, Tanu Kaskinen <<a href="mailto:tanu.kaskinen@linux.intel.com" target="_blank">tanu.kaskinen@linux.intel.com</a>> wrote: <blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex">[Why is every line that you write prefixed with ">"? That's usually only used for quoted text.] <div class="im"> On Fri, 2013-12-20 at 09:48 +0530, sathishkumar sivagurunathan wrote: > > > > Hi , > > > > I am trying to add a new function "pa_context_set_sink_input_paused" to > the pulseaudio introspect.c file. I was able to able and successfully > compile pulseaudio too.. > > > > gcc pa_listclients_pause.c -o pa_listclients_pause -L > /home/sathish/Desktop/pulseaudio-4.0/build/src/.libs/ -lpulse > > > > /tmp/ccueP47b.o: In function `pa_get_devicelist': > > > > pa_listclients_pause.c.text+0x6cb): undefined reference to > `pa_context_set_sink_input_paused' > > > > collect2: error: ld returned 1 exit status > > > > But when I try to run a program using this new function, it returns me > "undefined reference". > > > > I tried to run the nm command and check whether the new function is > present in libpulse.so > > > > The function returns me it has found it.. > > > > nm -A *.so | grep "pa_context_set_sink_input_paused" > > > > libpulse.so:0001d4a0 t pa_context_set_sink_input_paused > > > > I am not able to comprehend what is happening. Can you help me with this > ?? </div>Notice the "t" in the nm output. It means that the symbol is in the text (code) section, but more importantly, it means that the symbol is local to the library, not exported to outside world. An exported symbol would have upper case "T". The most likely reason why the symbol isn't exported is that you didn't add the new function to src/map-file. All functions in libpulse that are supposed to be used by applications need to be added to src/map-file. -- Tanu </blockquote></div> </div></div></div>