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root@xxxxxxx:/home/xxxxxxx# gcc -o xruncounter xruncounter.c
/tmp/ccuGaKKX.o: In function `jack_xrun_callback':
xruncounter.c:(.text+0x68): undefined reference to `jack_cpu_load'
xruncounter.c:(.text+0x81): undefined reference to `jack_cpu_load'
xruncounter.c:(.text+0xb5): undefined reference to `jack_cpu_load'
/tmp/ccuGaKKX.o: In function `signal_handler':
xruncounter.c:(.text+0x1a6): undefined reference to `jack_client_close'
/tmp/ccuGaKKX.o: In function `main':
xruncounter.c:(.text+0x1f8): undefined reference to `jack_client_open'
xruncounter.c:(.text+0x25d): undefined reference to `jack_port_register'
xruncounter.c:(.text+0x28c): undefined reference to `jack_port_register'
xruncounter.c:(.text+0x2f2): undefined reference to `jack_set_xrun_callback'
xruncounter.c:(.text+0x30d): undefined reference to `jack_set_sample_rate_callback'
xruncounter.c:(.text+0x328): undefined reference to `jack_set_buffer_size_callback'
xruncounter.c:(.text+0x343): undefined reference to `jack_set_process_callback'
xruncounter.c:(.text+0x35e): undefined reference to `jack_on_shutdown'
xruncounter.c:(.text+0x36d): undefined reference to `jack_activate'
xruncounter.c:(.text+0x3aa): undefined reference to `jack_is_realtime'
xruncounter.c:(.text+0x40b): undefined reference to `jack_cpu_load'
xruncounter.c:(.text+0x494): undefined reference to `jack_client_close'
collect2: error: ld returned 1 exit status
Basically, I'm not at all sure my system is "well tuned." Even though everything runs well and fairly smoothly, I'm not confident I don't have some really dumb settings - the fan comes on a lot, I get (inaudible) xruns at 10% DSP load using a Scarlett 18i20, etc. So this seemed like a good first step to figuring things out...