➜  receiver  platformio run
Processing arduino_uno environment:
avr-g++ -o .pioenvs/arduino_uno/Receiver/Receiver.o -c -fno-exceptions -g -Os -ffunction-sections -fdata-sections -MMD -mmcu=atmega328p -DF_CPU=16000000L -DARDUINO=158 -DARDUINO_AVR_UNO -I.pioenvs/arduino_uno/core -I.pioenvs/arduino_uno/variant -I.pioenvs/arduino_uno/IRremote -I.pioenvs/arduino_uno/Receiver .pioenvs/arduino_uno/Receiver/Receiver.cpp
avr-g++ -o .pioenvs/arduino_uno/firmware.elf -Os -Wl,--gc-sections -mmcu=atmega328p .pioenvs/arduino_uno/src/main.o -L.pioenvs/arduino_uno .pioenvs/arduino_uno/libIRremote.a .pioenvs/arduino_uno/libReceiver.a .pioenvs/arduino_uno/libcore.a -lm
.pioenvs/arduino_uno/libReceiver.a(Receiver.o): In function `Receiver::Receiver()':
/Users/j.hollmann/Projects/lasertag-project/receiver/.pioenvs/arduino_uno/Receiver/Receiver.cpp:5: undefined reference to `IRrecv::IRrecv(int)'
/Users/j.hollmann/Projects/lasertag-project/receiver/.pioenvs/arduino_uno/Receiver/Receiver.cpp:10: undefined reference to `IRrecv::enableIRIn()'
.pioenvs/arduino_uno/libReceiver.a(Receiver.o): In function `Receiver::tick()':
/Users/j.hollmann/Projects/lasertag-project/receiver/.pioenvs/arduino_uno/Receiver/Receiver.cpp:17: undefined reference to `IRrecv::decode(decode_results*)'
/Users/j.hollmann/Projects/lasertag-project/receiver/.pioenvs/arduino_uno/Receiver/Receiver.cpp:20: undefined reference to `IRrecv::resume()'
collect2: error: ld returned 1 exit status
scons: *** [.pioenvs/arduino_uno/firmware.elf] Error 1