linker complains

Linking CXX executable mscore
ScanFile /MuseScore/libmscore/spannermap.h
ScanFile /MuseScore/libmscore/spatium.h
ScanFile /MuseScore/libmscore/staff.h
ScanFile /MuseScore/libmscore/staffstate.h
ScanFile /MuseScore/libmscore/stafftext.h
ScanFile /MuseScore/libmscore/stafftype.h
ScanFile /MuseScore/libmscore/stem.h
ScanFile /MuseScore/libmscore/stemslash.h
ScanFile /MuseScore/libmscore/stringdata.h
ScanFile /MuseScore/libmscore/style.h
ScanFile /MuseScore/libmscore/style_p.h
ScanFile /MuseScore/libmscore/sym.h
ScanFile /MuseScore/libmscore/symbol.h
ScanFile /MuseScore/libmscore/synthesizerstate.h
ScanFile /MuseScore/libmscore/system.h
?<System>!=<SystemDivider> derived from <Symbol>
ScanFile /MuseScore/libmscore/tempo.h
ScanFile /MuseScore/libmscore/tempotext.h
ScanFile /MuseScore/libmscore/text.h
ScanFile /MuseScore/libmscore/textframe.h
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ScanFile /MuseScore/libmscore/tie.h
ScanFile /MuseScore/libmscore/tiemap.h
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ScanFile /MuseScore/libmscore/tremolobar.h
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make[3]: Leaving directory '/MuseScore/build.release'
[ 50%] Built target pluginDocumentation
CMakeFiles/mscore.dir/alsa.cpp.o: In function `Ms::AlsaDriver::~AlsaDriver()':
/MuseScore/mscore/alsa.cpp:129: undefined reference to `snd_pcm_sw_params_free'
/MuseScore/mscore/alsa.cpp:130: undefined reference to `snd_pcm_hw_params_free'
/MuseScore/mscore/alsa.cpp:133: undefined reference to `snd_pcm_close'
CMakeFiles/mscore.dir/alsa.cpp.o: In function `Ms::AlsaDriver::pcmStop()':
/MuseScore/mscore/alsa.cpp:171: undefined reference to `snd_pcm_drop'
/MuseScore/mscore/alsa.cpp:172: undefined reference to `snd_strerror'
CMakeFiles/mscore.dir/alsa.cpp.o: In function `Ms::AlsaDriver::playInit(unsigned long)':
/MuseScore/mscore/alsa.cpp:244: undefined reference to `snd_pcm_mmap_begin'
/MuseScore/mscore/alsa.cpp:245: undefined reference to `snd_strerror'
CMakeFiles/mscore.dir/alsa.cpp.o: In function `Ms::AlsaDriver::pcmStart()':
/MuseScore/mscore/alsa.cpp:143: undefined reference to `snd_pcm_avail_update'
/MuseScore/mscore/alsa.cpp:153: undefined reference to `snd_pcm_mmap_commit'
/MuseScore/mscore/alsa.cpp:156: undefined reference to `snd_pcm_start'
/MuseScore/mscore/alsa.cpp:158: undefined reference to `snd_strerror'
CMakeFiles/mscore.dir/alsa.cpp.o: In function `Ms::AlsaDriver::printinfo()':
/MuseScore/mscore/alsa.cpp:265: undefined reference to `snd_pcm_format_name'
CMakeFiles/mscore.dir/alsa.cpp.o: In function `Ms::AlsaDriver::setHwpar(_snd_pcm*, _snd_pcm_hw_params*)':
/MuseScore/mscore/alsa.cpp:277: undefined reference to `snd_pcm_hw_params_any'
/MuseScore/mscore/alsa.cpp:282: undefined reference to `snd_pcm_hw_params_set_periods_integer'
/MuseScore/mscore/alsa.cpp:289: undefined reference to `snd_pcm_hw_params_set_access'
/MuseScore/mscore/alsa.cpp:302: undefined reference to `snd_pcm_hw_params_set_format'
/MuseScore/mscore/alsa.cpp:307: undefined reference to `snd_pcm_hw_params_set_rate'
/MuseScore/mscore/alsa.cpp:312: undefined reference to `snd_pcm_hw_params_set_channels'
/MuseScore/mscore/alsa.cpp:320: undefined reference to `snd_pcm_hw_params_set_periods'
/MuseScore/mscore/alsa.cpp:326: undefined reference to `snd_pcm_hw_params_set_period_size_near'
/MuseScore/mscore/alsa.cpp:333: undefined reference to `snd_pcm_hw_params_set_buffer_size_near'
/MuseScore/mscore/alsa.cpp:344: undefined reference to `snd_pcm_hw_params'
/MuseScore/mscore/alsa.cpp:278: undefined reference to `snd_strerror'
/MuseScore/mscore/alsa.cpp:289: undefined reference to `snd_pcm_hw_params_set_access'
/MuseScore/mscore/alsa.cpp:294: undefined reference to `snd_pcm_hw_params_set_access'
/MuseScore/mscore/alsa.cpp:294: undefined reference to `snd_pcm_hw_params_set_access'
/MuseScore/mscore/alsa.cpp:301: undefined reference to `snd_pcm_hw_params_set_format'
/MuseScore/mscore/alsa.cpp:302: undefined reference to `snd_pcm_hw_params_set_format'
/MuseScore/mscore/alsa.cpp:328: undefined reference to `snd_strerror'
CMakeFiles/mscore.dir/alsa.cpp.o: In function `Ms::AlsaDriver::setSwpar(_snd_pcm*, _snd_pcm_sw_params*)':
/MuseScore/mscore/alsa.cpp:360: undefined reference to `snd_pcm_sw_params_current'
/MuseScore/mscore/alsa.cpp:361: undefined reference to `snd_pcm_sw_params_set_silence_size'
/MuseScore/mscore/alsa.cpp:367: undefined reference to `snd_pcm_sw_params_set_avail_min'
/MuseScore/mscore/alsa.cpp:371: undefined reference to `snd_pcm_sw_params'
CMakeFiles/mscore.dir/alsa.cpp.o: In function `Ms::AlsaDriver::init()':
/MuseScore/mscore/alsa.cpp:65: undefined reference to `snd_pcm_open'
/MuseScore/mscore/alsa.cpp:74: undefined reference to `snd_pcm_hw_params_malloc'
/MuseScore/mscore/alsa.cpp:79: undefined reference to `snd_pcm_sw_params_malloc'
/MuseScore/mscore/alsa.cpp:89: undefined reference to `snd_pcm_hw_params_get_rate'
/MuseScore/mscore/alsa.cpp:94: undefined reference to `snd_pcm_hw_params_get_format'
/MuseScore/mscore/alsa.cpp:95: undefined reference to `snd_pcm_hw_params_get_access'
/MuseScore/mscore/alsa.cpp:114: undefined reference to `snd_pcm_poll_descriptors_count'
CMakeFiles/mscore.dir/alsa.cpp.o: In function `Ms::AlsaDriver::recover()':
/MuseScore/mscore/alsa.cpp:388: undefined reference to `snd_pcm_status_sizeof'
/MuseScore/mscore/alsa.cpp:388: undefined reference to `snd_pcm_status_sizeof'
/MuseScore/mscore/alsa.cpp:390: undefined reference to `snd_pcm_status'
/MuseScore/mscore/alsa.cpp:394: undefined reference to `snd_pcm_status_get_state'
/MuseScore/mscore/alsa.cpp:406: undefined reference to `snd_pcm_prepare'
/MuseScore/mscore/alsa.cpp:407: undefined reference to `snd_strerror'
/MuseScore/mscore/alsa.cpp:391: undefined reference to `snd_strerror'
/MuseScore/mscore/alsa.cpp:397: undefined reference to `snd_pcm_status_get_trigger_tstamp'
CMakeFiles/mscore.dir/alsa.cpp.o: In function `Ms::AlsaDriver::pcmWait()':
/MuseScore/mscore/alsa.cpp:190: undefined reference to `snd_pcm_poll_descriptors'
/MuseScore/mscore/alsa.cpp:223: undefined reference to `snd_pcm_avail_update'
CMakeFiles/mscore.dir/alsa.cpp.o: In function `Ms::AlsaDriver::write(int, float*, float*)':
/MuseScore/mscore/alsa.cpp:530: undefined reference to `snd_pcm_wait'
/MuseScore/mscore/alsa.cpp:535: undefined reference to `snd_pcm_avail_update'
/MuseScore/mscore/alsa.cpp:537: undefined reference to `snd_strerror'
/MuseScore/mscore/alsa.cpp:548: undefined reference to `snd_pcm_mmap_commit'
/MuseScore/mscore/alsa.cpp:573: undefined reference to `snd_pcm_writei'
/MuseScore/mscore/alsa.cpp:566: undefined reference to `snd_pcm_writen'
/MuseScore/mscore/alsa.cpp:567: undefined reference to `snd_strerror'
/MuseScore/mscore/alsa.cpp:574: undefined reference to `snd_strerror'
CMakeFiles/mscore.dir/mididriver.cpp.o: In function `Ms::AlsaMidiDriver::getInputPollFd(pollfd**, int*)':
/MuseScore/mscore/mididriver.cpp:353: undefined reference to `snd_seq_poll_descriptors_count'
/MuseScore/mscore/mididriver.cpp:355: undefined reference to `snd_seq_poll_descriptors'
CMakeFiles/mscore.dir/mididriver.cpp.o: In function `Ms::AlsaMidiDriver::getOutputPollFd(pollfd**, int*)':
/MuseScore/mscore/mididriver.cpp:366: undefined reference to `snd_seq_poll_descriptors_count'
/MuseScore/mscore/mididriver.cpp:368: undefined reference to `snd_seq_poll_descriptors'
CMakeFiles/mscore.dir/mididriver.cpp.o: In function `Ms::AlsaMidiDriver::read()':
/MuseScore/mscore/mididriver.cpp:450: undefined reference to `snd_seq_free_event'
/MuseScore/mscore/mididriver.cpp:381: undefined reference to `snd_seq_event_input'
/MuseScore/mscore/mididriver.cpp:386: undefined reference to `snd_seq_free_event'
CMakeFiles/mscore.dir/mididriver.cpp.o: In function `Ms::AlsaMidiDriver::registerOutPort(QString const&)':
/MuseScore/mscore/mididriver.cpp:299: undefined reference to `snd_seq_create_simple_port'
/MuseScore/mscore/mididriver.cpp:304: undefined reference to `snd_seq_client_id'
CMakeFiles/mscore.dir/mididriver.cpp.o: In function `Ms::AlsaMidiDriver::registerInPort(QString const&)':
/MuseScore/mscore/mididriver.cpp:314: undefined reference to `snd_seq_create_simple_port'
/MuseScore/mscore/mididriver.cpp:319: undefined reference to `snd_seq_client_id'
CMakeFiles/mscore.dir/mididriver.cpp.o: In function `Ms::AlsaMidiDriver::connect(Ms::Port, Ms::Port)':
/MuseScore/mscore/mididriver.cpp:271: undefined reference to `snd_seq_port_subscribe_sizeof'
/MuseScore/mscore/mididriver.cpp:271: undefined reference to `snd_seq_port_subscribe_sizeof'
/MuseScore/mscore/mididriver.cpp:278: undefined reference to `snd_seq_port_subscribe_set_sender'
/MuseScore/mscore/mididriver.cpp:279: undefined reference to `snd_seq_port_subscribe_set_dest'
/MuseScore/mscore/mididriver.cpp:281: undefined reference to `snd_seq_subscribe_port'
/MuseScore/mscore/mididriver.cpp:286: undefined reference to `snd_strerror'
CMakeFiles/mscore.dir/mididriver.cpp.o: In function `Ms::AlsaMidiDriver::putEvent(snd_seq_event*)':
/MuseScore/mscore/mididriver.cpp:538: undefined reference to `snd_seq_event_output_direct'
/MuseScore/mscore/mididriver.cpp:539: undefined reference to `snd_seq_event_length'
/MuseScore/mscore/mididriver.cpp:555: undefined reference to `snd_strerror'
/MuseScore/mscore/mididriver.cpp:549: undefined reference to `snd_strerror'
CMakeFiles/mscore.dir/mididriver.cpp.o: In function `Ms::AlsaMidiDriver::outputPorts()':
/MuseScore/mscore/mididriver.cpp:204: undefined reference to `snd_seq_client_info_sizeof'
/MuseScore/mscore/mididriver.cpp:204: undefined reference to `snd_seq_client_info_sizeof'
/MuseScore/mscore/mididriver.cpp:205: undefined reference to `snd_seq_client_info_set_client'
/MuseScore/mscore/mididriver.cpp:207: undefined reference to `snd_seq_query_next_client'
/MuseScore/mscore/mididriver.cpp:209: undefined reference to `snd_seq_port_info_sizeof'
/MuseScore/mscore/mididriver.cpp:209: undefined reference to `snd_seq_port_info_sizeof'
/MuseScore/mscore/mididriver.cpp:210: undefined reference to `snd_seq_client_info_get_client'
/MuseScore/mscore/mididriver.cpp:210: undefined reference to `snd_seq_port_info_set_client'
/MuseScore/mscore/mididriver.cpp:211: undefined reference to `snd_seq_port_info_set_port'
/MuseScore/mscore/mididriver.cpp:212: undefined reference to `snd_seq_query_next_port'
/MuseScore/mscore/mididriver.cpp:213: undefined reference to `snd_seq_port_info_get_capability'
/MuseScore/mscore/mididriver.cpp:216: undefined reference to `snd_seq_port_info_get_client'
/MuseScore/mscore/mididriver.cpp:217: undefined reference to `snd_seq_client_id'
/MuseScore/mscore/mididriver.cpp:219: undefined reference to `snd_seq_port_info_get_name'
/MuseScore/mscore/mididriver.cpp:220: undefined reference to `snd_seq_port_info_get_port'
CMakeFiles/mscore.dir/mididriver.cpp.o: In function `Ms::AlsaMidiDriver::inputPorts()':
/MuseScore/mscore/mididriver.cpp:238: undefined reference to `snd_seq_client_info_sizeof'
/MuseScore/mscore/mididriver.cpp:238: undefined reference to `snd_seq_client_info_sizeof'
/MuseScore/mscore/mididriver.cpp:239: undefined reference to `snd_seq_client_info_set_client'
/MuseScore/mscore/mididriver.cpp:241: undefined reference to `snd_seq_query_next_client'
/MuseScore/mscore/mididriver.cpp:243: undefined reference to `snd_seq_port_info_sizeof'
/MuseScore/mscore/mididriver.cpp:243: undefined reference to `snd_seq_port_info_sizeof'
/MuseScore/mscore/mididriver.cpp:244: undefined reference to `snd_seq_client_info_get_client'
/MuseScore/mscore/mididriver.cpp:244: undefined reference to `snd_seq_port_info_set_client'
/MuseScore/mscore/mididriver.cpp:245: undefined reference to `snd_seq_port_info_set_port'
/MuseScore/mscore/mididriver.cpp:246: undefined reference to `snd_seq_query_next_port'
/MuseScore/mscore/mididriver.cpp:247: undefined reference to `snd_seq_port_info_get_capability'
/MuseScore/mscore/mididriver.cpp:250: undefined reference to `snd_seq_port_info_get_client'
/MuseScore/mscore/mididriver.cpp:251: undefined reference to `snd_seq_client_id'
/MuseScore/mscore/mididriver.cpp:253: undefined reference to `snd_seq_port_info_get_name'
/MuseScore/mscore/mididriver.cpp:254: undefined reference to `snd_seq_port_info_get_port'
CMakeFiles/mscore.dir/mididriver.cpp.o: In function `Ms::AlsaMidiDriver::init()':
/MuseScore/mscore/mididriver.cpp:124: undefined reference to `snd_seq_open'
/MuseScore/mscore/mididriver.cpp:131: undefined reference to `snd_seq_set_client_name'
/MuseScore/mscore/mididriver.cpp:144: undefined reference to `snd_seq_create_simple_port'
/MuseScore/mscore/mididriver.cpp:150: undefined reference to `snd_seq_client_id'
/MuseScore/mscore/mididriver.cpp:155: undefined reference to `snd_seq_port_subscribe_sizeof'
/MuseScore/mscore/mididriver.cpp:155: undefined reference to `snd_seq_port_subscribe_sizeof'
/MuseScore/mscore/mididriver.cpp:156: undefined reference to `snd_seq_port_subscribe_set_dest'
/MuseScore/mscore/mididriver.cpp:157: undefined reference to `snd_seq_port_subscribe_set_sender'
/MuseScore/mscore/mididriver.cpp:158: undefined reference to `snd_seq_subscribe_port'
/MuseScore/mscore/mididriver.cpp:146: undefined reference to `snd_strerror'
/MuseScore/mscore/mididriver.cpp:160: undefined reference to `snd_strerror'
CMakeFiles/mscore.dir/mididriver.cpp.o: In function `Ms::AlsaMidiDriver::updateInPortCount(int)':
/MuseScore/mscore/mididriver.cpp:339: undefined reference to `snd_seq_delete_simple_port'
CMakeFiles/mscore.dir/pa.cpp.o: In function `Ms::Portaudio::~Portaudio()':
/MuseScore/mscore/pa.cpp:72: undefined reference to `Pa_CloseStream'
/MuseScore/mscore/pa.cpp:75: undefined reference to `Pa_Terminate'
/MuseScore/mscore/pa.cpp:74: undefined reference to `Pa_GetErrorText'
CMakeFiles/mscore.dir/pa.cpp.o: In function `Ms::Portaudio::init(bool)':
/MuseScore/mscore/pa.cpp:86: undefined reference to `Pa_Initialize'
/MuseScore/mscore/pa.cpp:99: undefined reference to `Pa_GetDeviceInfo'
/MuseScore/mscore/pa.cpp:122: undefined reference to `Pa_OpenStream'
/MuseScore/mscore/pa.cpp:125: undefined reference to `Pa_GetDefaultOutputDevice'
/MuseScore/mscore/pa.cpp:126: undefined reference to `Pa_OpenStream'
/MuseScore/mscore/pa.cpp:132: undefined reference to `Pa_GetStreamInfo'
/MuseScore/mscore/pa.cpp:93: undefined reference to `Pa_GetVersionText'
/MuseScore/mscore/pa.cpp:97: undefined reference to `Pa_GetDefaultOutputDevice'
/MuseScore/mscore/pa.cpp:88: undefined reference to `Pa_GetErrorText'
/MuseScore/mscore/pa.cpp:128: undefined reference to `Pa_GetErrorText'
/MuseScore/mscore/pa.cpp:102: undefined reference to `Pa_GetDefaultOutputDevice'
/MuseScore/mscore/pa.cpp:102: undefined reference to `Pa_GetDeviceInfo'
CMakeFiles/mscore.dir/pa.cpp.o: In function `Ms::Portaudio::start(bool)':
/MuseScore/mscore/pa.cpp:205: undefined reference to `Pa_StartStream'
/MuseScore/mscore/pa.cpp:207: undefined reference to `Pa_GetErrorText'
CMakeFiles/mscore.dir/pa.cpp.o: In function `Ms::Portaudio::stop()':
/MuseScore/mscore/pa.cpp:219: undefined reference to `Pa_StopStream'
/MuseScore/mscore/pa.cpp:221: undefined reference to `Pa_GetErrorText'
CMakeFiles/mscore.dir/pa.cpp.o: In function `Ms::Portaudio::currentApi() const':
/MuseScore/mscore/pa.cpp:283: undefined reference to `Pa_GetHostApiCount'
/MuseScore/mscore/pa.cpp:284: undefined reference to `Pa_GetHostApiInfo'
/MuseScore/mscore/pa.cpp:287: undefined reference to `Pa_HostApiDeviceIndexToDeviceIndex'
/MuseScore/mscore/pa.cpp:283: undefined reference to `Pa_GetHostApiCount'
/MuseScore/mscore/pa.cpp:281: undefined reference to `Pa_GetDefaultOutputDevice'
CMakeFiles/mscore.dir/pa.cpp.o: In function `Ms::Portaudio::currentDevice() const':
/MuseScore/mscore/pa.cpp:307: undefined reference to `Pa_GetHostApiCount'
/MuseScore/mscore/pa.cpp:308: undefined reference to `Pa_GetHostApiInfo'
/MuseScore/mscore/pa.cpp:311: undefined reference to `Pa_HostApiDeviceIndexToDeviceIndex'
/MuseScore/mscore/pa.cpp:307: undefined reference to `Pa_GetHostApiCount'
/MuseScore/mscore/pa.cpp:305: undefined reference to `Pa_GetDefaultOutputDevice'
CMakeFiles/mscore.dir/pa.cpp.o: In function `Ms::Portaudio::apiList() const':
/MuseScore/mscore/pa.cpp:162: undefined reference to `Pa_GetHostApiCount'
/MuseScore/mscore/pa.cpp:164: undefined reference to `Pa_GetHostApiInfo'
CMakeFiles/mscore.dir/pa.cpp.o: In function `Ms::Portaudio::deviceList(int)':
/MuseScore/mscore/pa.cpp:178: undefined reference to `Pa_GetHostApiInfo'
/MuseScore/mscore/pa.cpp:181: undefined reference to `Pa_HostApiDeviceIndexToDeviceIndex'
/MuseScore/mscore/pa.cpp:182: undefined reference to `Pa_GetDeviceInfo'
CMakeFiles/mscore.dir/pa.cpp.o: In function `Ms::Portaudio::deviceIndex(int, int)':
/MuseScore/mscore/pa.cpp:196: undefined reference to `Pa_HostApiDeviceIndexToDeviceIndex'
collect2: error: ld returned 1 exit status