README
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Please add optional dependencies in this folder

For TLS support with mbedtls download the source tarball of version 2.28.x and extract here in the subfolder (Version 2.28.3 https://github.com/Mbed-TLS/mbedtls/archive/refs/tags/v2.28.3.tar.gz)

Rename the extracted mbedtls folder to mbedtls-2.28 (otherwise the build script cannot find the folder and will compile the library without TLS support).