How to link libs in netbeans (linux)?

I'm trying to write a program in c++ to analyze sound. I want to use libsndfile library. I added an option -lsndfile to g++ compiler options. But I get the error: WavReader.cpp:18: undefined reference to `sf_open' How to link the library? Please help! ``` #include <cstdlib> #include "WavReader.h" #include <sndfile.h> #include <iostream> namespace SA { WavReader::WavReader(char* fileName, SoundProcessor* soundProcessor) { this->fileName = fileName; this->soundProcessor = soundProcessor; } void WavReader::readFile() { SNDFILE* sf = NULL; SF_INFO info; info.format = 0; sf = sf_open(this->fileName, SFM_READ, &info); } WavReader::~WavReader() { } } ```