..
System Dependencies
-------------------
* threads                      : OK
* JACK       (optional)        : OK
* PulseAudio (optional)        : OK
* ALSA       (optional)        : OK
* CoreAudio  (optional)        : not found
* WASAPI     (optional)        : not found

..
[  2%] Building CXX object CMakeFiles/libsoundio_shared.dir/src/jack.cpp.o
/libsoundio/src/jack.cpp: In function ‘int soundio_jack_init(SoundIoPrivate*)’:
/mnt/data/gb1/home/srv/source/git/libsoundio/src/jack.cpp:919:84: error: invalid conversion from ‘void (*)(jack_port_id_t, const char*, const char*, void*) {aka void (*)(unsigned int, const char*, const char*, void*)}’ to ‘JackPortRenameCallback {aka int (*)(unsigned int, const char*, const char*, void*)}’ [-fpermissive]
     if ((err = jack_set_port_rename_callback(sij->client, port_rename_calllback, si))) {
                                                                                    ^
At global scope:
cc1plus: error: unrecognized command line option "-Wno-c99-extensions" [-Werror]
cc1plus: all warnings being treated as errors
make[2]: *** [CMakeFiles/libsoundio_shared.dir/src/jack.cpp.o] Error 1
make[1]: *** [CMakeFiles/libsoundio_shared.dir/all] Error 2
make: *** [all] Error 2