Anyone seen error 2?

General
1

Trying to verify the PID app and I get this error:

32+0 records in
32+0 records out
32 bytes (32 B) copied, 0.000790327 s, 40.5 kB/s
4+0 records in
4+0 records out
4 bytes (4 B) copied, 0.0934871 s, 0.0 kB/s
/tmp/ccynLshk.ltrans2.ltrans.o: In function setup':* *pid.cpp:22: undefined reference toPID::SetMode(PID::mode_t)’
/tmp/ccynLshk.ltrans2.ltrans.o: In function loop':* *pid.cpp:28: undefined reference toPID::Compute()’
/tmp/ccynLshk.ltrans21.ltrans.o: In function __static_initialization_and_destruction_0':* *pid.cpp:13: undefined reference toPID::PID(double, double*, double*, double, double, double, PID::direction_t)’*
collect2: error: ld returned 1 exit status
make[1]: *** [8c4dd2c6286ed27f2a422e761ae6b2ea54e6a301a1e71646d022f7167794.elf] Error 1
make: *** [main] Error 2

Error: Could not compile. Please review your code.

2

What is this PID app?
What device are you building for?
Have you checked you selected the correct target device?
How are you building?

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