I keep trying to compile a sketch, but the same error keeps on showing up:
Arduino: 1.6.4 (Windows 8.1), Board: “Arduino Uno”
C:\Users\mateo\AppData\Local\Temp\build4687673022135353463.tmp/core.a(wiring.c.o): In function
delay': C:\Program Files (x86)\Arduino\hardware\arduino\avr\cores\arduino/wiring.c:114: undefined reference to yield’
collect2.exe: error: ld returned 1 exit status
How do I fix this and what could I do to prevent this from happening again?