Comment 3 for bug 1134242

This fails to build for me on raring am64:

g++ -DHAVE_CONFIG_H -I. -I.. -Wall -Wno-write-strings -DPKG_DATA_DIR=\"/usr/share/twpsk\" -g -O2 -c -o twpskScope.o twpskScope.C
  CXXLD twpsk
/usr/bin/ld: server.o: undefined reference to symbol 'pa_strerror@@PULSE_0'
/usr/bin/ld: note: 'pa_strerror@@PULSE_0' is defined in DSO /usr/lib/x86_64-linux-gnu/libpulse.so.0 so try adding it to the linker command line
/usr/lib/x86_64-linux-gnu/libpulse.so.0: could not read symbols: Invalid operation
collect2: error: ld returned 1 exit status
make[3]: *** [twpsk] Error 1
make[3]: Leaving directory `/tmp/buildd/twpsk-4.0/src'
make[2]: *** [all-recursive] Error 1