The version you linked was made for a different platform (esp. a different compiler, that comes with the Azure SDK, gcc-arm-linux-eabi-hf). I was thinking about the release 'BSEC_1.4.7.4_Cortex-A7_with_fPIC.zip', that was built to run on bare metal A7 (gcc-arm-none-eabi). Another alternative for your MCU would be to run BSEC in the M4 core of your MCU, that should be compatible with the binaries from the standard BSEC package on our website.
I will forward the request internally whether we can support your specific platform (arm-openstlinux_weston-linux-gnueabi-gcc), but be aware that deploying BSEC on a new platform can take up to several weeks.
EDIT: I also just realized that in your initial post your were not able to successfully communicate with the BME680. Unless you are using our BME680 sensor API, I would recommend that you get platform-specific support from your driver provider.
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