Hello franciskumar200,
Library file was under "algo\normal_version\bin" folder.
BME688 You could download BME688 software from here: https://www.bosch-sensortec.com/software-tools/software/bme688-software/ If you compiler was in the supported list, you could directly run BSEC library and get IAQ output value. BSEC supported platform and compiler: https://www.bosch-sensortec.com/media/boschsensortec/downloads/software/bme688_development_software/bsec2061-binary-size-information.pdf
BME680 Download BSEC package from here: https://www.bosch-sensortec.com/software-tools/software/bsec/
... View more