Ho un errore nel compilare questo programma, sia da aur che da sorgenti del sito

codice:
/bin/sh ../libtool  --tag=CXX   --mode=compile g++ -DHAVE_CONFIG_H -I. -I..  -Wall -pthread -I/usr/include  -I/usr/include/sigc++-2.0 -I/usr/lib/sigc++-2.0/include   -DPSYNTH_DATA_DIR=\"/usr/local/share/psychosynth\"  -I/usr/include/soundtouch   -I/usr/include/libxml2    -I/usr/include/alsa      -g -O2 -DNDEBUG -MT libpsynth_la-misc.lo -MD -MP -MF .deps/libpsynth_la-misc.Tpo -c -o libpsynth_la-misc.lo `test -f 'base/misc.cpp' || echo './'`base/misc.cpp
libtool: compile:  g++ -DHAVE_CONFIG_H -I. -I.. -Wall -pthread -I/usr/include -I/usr/include/sigc++-2.0 -I/usr/lib/sigc++-2.0/include -DPSYNTH_DATA_DIR=\"/usr/local/share/psychosynth\" -I/usr/include/soundtouch -I/usr/include/libxml2 -I/usr/include/alsa -g -O2 -DNDEBUG -MT libpsynth_la-misc.lo -MD -MP -MF .deps/libpsynth_la-misc.Tpo -c base/misc.cpp  -fPIC -DPIC -o .libs/libpsynth_la-misc.o
base/misc.cpp: In function ‘char* psynth::ftoa(double, double)’:
base/misc.cpp:101: error: ‘sprintf’ was not declared in this scope
base/misc.cpp:106: error: ‘sprintf’ was not declared in this scope
base/misc.cpp:111: error: ‘sprintf’ was not declared in this scope
make[2]: *** [libpsynth_la-misc.lo] Error 1
make[2]: Leaving directory `/home/psykopear/Pacchetti/psychosynth-0.1.5/psynth'
make[1]: *** [all-recursive] Error 1
make[1]: Leaving directory `/home/psykopear/Pacchetti/psychosynth-0.1.5'
make: *** [all] Error 2
qual'è il problema?