BME680 and ESP32 2.01

[jedimaster64]

Recently, the ESP32 Arduino 2.01 has been released. I used to use the BSEC library successfully in Arduino with ESP32 Arduino 1.06. But the update seems to have broken things. When compiling I get pages full of errors, like:

/private/var/folders/dh/fhbf_d_j3_v9w2f6np0lz70h0000gn/T/arduino-sketch-A40600CE8733E404BAA5081A88D3D31E/libraries/BSEC_Software_Library/BSEC_Software_Library.a(bsec.cpp.o):(.literal._ZN4Bsec11beginCommonEv+0x4): undefined reference to `bsec_init'
/private/var/folders/dh/fhbf_d_j3_v9w2f6np0lz70h0000gn/T/arduino-sketch-A40600CE8733E404BAA5081A88D3D31E/libraries/BSEC_Software_Library/BSEC_Software_Library.a(bsec.cpp.o):(.literal._ZN4Bsec11beginCommonEv+0x8): undefined reference to `bsec_get_version'
/private/var/folders/dh/fhbf_d_j3_v9w2f6np0lz70h0000gn/T/arduino-sketch-A40600CE8733E404BAA5081A88D3D31E/libraries/BSEC_Software_Library/BSEC_Software_Library.a(bsec.cpp.o):(.literal._ZN4Bsec18updateSubscriptionEP21bsec_virtual_sensor_thf+0x0): undefined reference to `bsec_update_subscription'
/private/var/folders/dh/fhbf_d_j3_v9w2f6np0lz70h0000gn/T/arduino-sketch-A40600CE8733E404BAA5081A88D3D31E/libraries/BSEC_Software_Library/BSEC_Software_Library.a(bsec.cpp.o):(.literal._ZN4Bsec8getStateEPh+0x0): undefined reference to `bsec_get_state'
/private/var/folders/dh/fhbf_d_j3_v9w2f6np0lz70h0000gn/T/arduino-sketch-A40600CE8733E404BAA5081A88D3D31E/libraries/BSEC_Software_Library/BSEC_Software_Library.a(bsec.cpp.o):(.literal._ZN4Bsec8setStateEPh+0x10): undefined reference to `bsec_set_state'
/private/var/folders/dh/fhbf_d_j3_v9w2f6np0lz70h0000gn/T/arduino-sketch-A40600CE8733E404BAA5081A88D3D31E/libraries/BSEC_Software_Library/BSEC_Software_Library.a(bsec.cpp.o):(.literal._ZN4Bsec9setConfigEPKh+0x0): undefined reference to `bsec_set_configuration'
/private/var/folders/dh/fhbf_d_j3_v9w2f6np0lz70h0000gn/T/arduino-sketch-A40600CE8733E404BAA5081A88D3D31E/libraries/BSEC_Software_Library/BSEC_Software_Library.a(bsec.cpp.o):(.literal._ZN4Bsec15readProcessDataEx19bsec_bme_settings_t+0xc): undefined reference to `bsec_do_steps'
/private/var/folders/dh/fhbf_d_j3_v9w2f6np0lz70h0000gn/T/arduino-sketch-A40600CE8733E404BAA5081A88D3D31E/libraries/BSEC_Software_Library/BSEC_Software_Library.a(bsec.cpp.o):(.literal._ZN4Bsec3runEx+0x0): undefined reference to `bsec_sensor_control'
/private/var/folders/dh/fhbf_d_j3_v9w2f6np0lz70h0000gn/T/arduino-sketch-A40600CE8733E404BAA5081A88D3D31E/libraries/BSEC_Software_Library/BSEC_Software_Library.a(bsec.cpp.o): In function `Bsec::beginCommon()':

Is this a known problem and/or how can I fix this?

[BSTRobin]

Hello jedimaster64,

I mean you could refer the existing Arduino project under BSEC 2.x package.

[jedimaster64]

I'm actually still using the BSEC 1.4.8 library (https://github.com/BoschSensortec/BSEC-Arduino-library). Is this maybe the problem and I should move to BSEC 2.0 (https://github.com/BoschSensortec/Bosch-BSEC2-Library)? This folder on GitHub seems to be empty.... 

But as mentioned, my code runs fine under ESP32 1.04,1.05, 1.06. It's just when I moved to ESP32 2.0 that the problems started.

[jedimaster64]

No one being able to help me out here? I have been browsing through the forum and my problem sounds a lot like what persons have observed in going from ESP32 1.04 -> 1.05 -> 1.06. Somehow the linking with the compiler seems to become faulty. The suggestion is to modify the platform.txt but this has changed dramatically in format since 2.0. 

[BSTRobin]

Hello jedimaster64,

As you used BSEC 1.4.8, you could refer BSEC arduino code in github for your platform. This code based on BSEC1.
https://github.com/BoschSensortec/BSEC-Arduino-library

[jedimaster64]

Thanks… But I don’t fully understand the suggestion. Maybe I didn’t explain my problem properly.
- I had a fully working system with BSEC 1.x and esp32 1.06. I could compile without problems. BSEC library nicely included etc. Have this running for years already.
- When I upgraded to esp32 2.01 (some weeks ago released), I no longer could compile. It seems it’s missing some changes in platforms.txt. At least, the errors are similar to when not the appropriate changes are made.
- I cannot implement the changes suggested as platforms.txt is entirely different in esp32 2.0. So no clue what to change.