rtaudio build error

[SNIP...]

config.status: creating rtaudio-config
config.status: creating Makefile
config.status: creating tests/Makefile
g++ -O2 -Wall -Iinclude -fPIC -DHAVE_GETTIMEOFDAY  -D__UNIX_JACK__ -D__LINUX_ALSA__ -c RtAudio.cpp -o RtAudio.o
RtAudio.cpp: In member function ‘virtual bool RtApiJack::probeDeviceOpen(unsigned int, RtApi::StreamMode, unsigned int, unsigned int, unsigned int, RtAudioFormat, unsigned int*, RtAudio::StreamOptions*)’:
RtAudio.cpp:2098:29: warning: ‘jack_nframes_t jack_port_get_latency(jack_port_t*)’ is deprecated (declared at /usr/include/jack/jack.h:1038) [-Wdeprecated-declarations]
RtAudio.cpp:2098:103: warning: ‘jack_nframes_t jack_port_get_latency(jack_port_t*)’ is deprecated (declared at /usr/include/jack/jack.h:1038) [-Wdeprecated-declarations]
/usr/bin/ar ruv librtaudio.a RtAudio.o 
/usr/bin/ar ruv librtaudio.a RtAudio.o 
/usr/bin/ar: creating librtaudio.a/usr/bin/ar: 
a - RtAudio.o
creating librtaudio.a
a - RtAudio.o
ranlib librtaudio.a
ranlib librtaudio.a
g++ -fPIC -shared -Wl,-soname,librtaudio.so.4 -o librtaudio.so.4.0.11 RtAudio.o  -lpthread -lasound -lasound -ljack 
g++ -fPIC -shared -Wl,-soname,librtaudio.so.4 -o librtaudio.so.4.0.11 RtAudio.o  -lpthread -lasound -lasound -ljack 
/bin/ln -s librtaudio.so.4.0.11 librtaudio.so
/bin/ln -s librtaudio.so.4.0.11 librtaudio.so
/bin/ln: failed to create symbolic link ‘librtaudio.so’: File exists
make: *** [librtaudio.a] Error 1
==> ERROR: A failure occurred in build().
    Aborting...