C:\Users\jonas\AppData\Local\Temp\arduino-sketch-1637E99D06118CEA2DDFA0CCD3C525D3\libraries\BSEC-Arduino-library-master\BSEC-Arduino-library-master.a(bsec.cpp.o):(.literal._ZN4Bsec11beginCommonEv+0x4): undefined reference to `bsec_init' C:\Users\jonas\AppData\Local\Temp\arduino-sketch-1637E99D06118CEA2DDFA0CCD3C525D3\libraries\BSEC-Arduino-library-master\BSEC-Arduino-library-master.a(bsec.cpp.o):(.literal._ZN4Bsec11beginCommonEv+0x8): undefined reference to `bsec_get_version' C:\Users\jonas\AppData\Local\Temp\arduino-sketch-1637E99D06118CEA2DDFA0CCD3C525D3\libraries\BSEC-Arduino-library-master\BSEC-Arduino-library-master.a(bsec.cpp.o):(.literal._ZN4Bsec18updateSubscriptionEP21bsec_virtual_sensor_thf+0x0): undefined reference to `bsec_update_subscription' C:\Users\jonas\AppData\Local\Temp\arduino-sketch-1637E99D06118CEA2DDFA0CCD3C525D3\libraries\BSEC-Arduino-library-master\BSEC-Arduino-library-master.a(bsec.cpp.o):(.literal._ZN4Bsec8setStateEPh+0x10): undefined reference to `bsec_set_state' C:\Users\jonas\AppData\Local\Temp\arduino-sketch-1637E99D06118CEA2DDFA0CCD3C525D3\libraries\BSEC-Arduino-library-master\BSEC-Arduino-library-master.a(bsec.cpp.o):(.literal._ZN4Bsec15readProcessDataEx19bsec_bme_settings_t+0x14): undefined reference to `bsec_do_steps' C:\Users\jonas\AppData\Local\Temp\arduino-sketch-1637E99D06118CEA2DDFA0CCD3C525D3\libraries\BSEC-Arduino-library-master\BSEC-Arduino-library-master.a(bsec.cpp.o):(.literal._ZN4Bsec3runEx+0x0): undefined reference to `bsec_sensor_control' C:\Users\jonas\AppData\Local\Temp\arduino-sketch-1637E99D06118CEA2DDFA0CCD3C525D3\libraries\BSEC-Arduino-library-master\BSEC-Arduino-library-master.a(bsec.cpp.o):(.literal._ZN4Bsec3runEx+0x4): undefined reference to `bsec_get_state' C:\Users\jonas\AppData\Local\Temp\arduino-sketch-1637E99D06118CEA2DDFA0CCD3C525D3\libraries\BSEC-Arduino-library-master\BSEC-Arduino-library-master.a(bsec.cpp.o): In function `Bsec::beginCommon()': e:\Daten\Dokumente\Arduino\libraries\BSEC-Arduino-library-master\src/bsec.cpp:476: undefined reference to `bsec_init' C:\Users\jonas\AppData\Local\Temp\arduino-sketch-1637E99D06118CEA2DDFA0CCD3C525D3\libraries\BSEC-Arduino-library-master\BSEC-Arduino-library-master.a(bsec.cpp.o): In function `Bsec::getVersion()': e:\Daten\Dokumente\Arduino\libraries\BSEC-Arduino-library-master\src/bsec.cpp:476: undefined reference to `bsec_get_version' C:\Users\jonas\AppData\Local\Temp\arduino-sketch-1637E99D06118CEA2DDFA0CCD3C525D3\libraries\BSEC-Arduino-library-master\BSEC-Arduino-library-master.a(bsec.cpp.o): In function `Bsec::updateSubscription(bsec_virtual_sensor_t*, unsigned char, float)': e:\Daten\Dokumente\Arduino\libraries\BSEC-Arduino-library-master\src/bsec.cpp:476: undefined reference to `bsec_update_subscription' C:\Users\jonas\AppData\Local\Temp\arduino-sketch-1637E99D06118CEA2DDFA0CCD3C525D3\libraries\BSEC-Arduino-library-master\BSEC-Arduino-library-master.a(bsec.cpp.o): In function `Bsec::setState(unsigned char*)': e:\Daten\Dokumente\Arduino\libraries\BSEC-Arduino-library-master\src/bsec.cpp:476: undefined reference to `bsec_set_state' C:\Users\jonas\AppData\Local\Temp\arduino-sketch-1637E99D06118CEA2DDFA0CCD3C525D3\libraries\BSEC-Arduino-library-master\BSEC-Arduino-library-master.a(bsec.cpp.o): In function `Bsec::readProcessData(long long, bsec_bme_settings_t)': e:\Daten\Dokumente\Arduino\libraries\BSEC-Arduino-library-master\src/bsec.cpp:385: undefined reference to `bsec_do_steps' C:\Users\jonas\AppData\Local\Temp\arduino-sketch-1637E99D06118CEA2DDFA0CCD3C525D3\libraries\BSEC-Arduino-library-master\BSEC-Arduino-library-master.a(bsec.cpp.o): In function `Bsec::run(long long)': e:\Daten\Dokumente\Arduino\libraries\BSEC-Arduino-library-master\src/bsec.cpp:200: undefined reference to `bsec_init' e:\Daten\Dokumente\Arduino\libraries\BSEC-Arduino-library-master\src/bsec.cpp:210: undefined reference to `bsec_update_subscription' e:\Daten\Dokumente\Arduino\libraries\BSEC-Arduino-library-master\src/bsec.cpp:210: undefined reference to `bsec_sensor_control' e:\Daten\Dokumente\Arduino\libraries\BSEC-Arduino-library-master\src/bsec.cpp:246: undefined reference to `bsec_get_state' collect2.exe: error: ld returned 1 exit status Using library BSEC-Arduino-library-master at version 1.6.1480 in folder: e:\Daten\Dokumente\Arduino\libraries\BSEC-Arduino-library-master Using library Wire at version 1.0.1 in folder: C:\Users\jonas\AppData\Local\Arduino15\packages\esp32\hardware\esp32\1.0.6\libraries\Wire Using library SPI at version 1.0 in folder: C:\Users\jonas\AppData\Local\Arduino15\packages\esp32\hardware\esp32\1.0.6\libraries\SPI Compilation error: Error: 2 UNKNOWN: exit status 1