RedfishPkg/Library/JsonLib/Readme.rst
Jansson is a C library for encoding, decoding and manipulating JSON data. Its main features and design principles are:
Jansson is licensed under the MIT license(refer to ReadMe.rst under edk2). It is used in production and its API is stable. It works on numerous platforms, including numerous Unix like systems and Windows. It's suitable for use on any system, including desktop, server, and small embedded systems.
In UEFI/EDKII environment, Redfish project consumes jansson to achieve JSON operations.
Jansson version on edk2: 2.13.1, API reference is on the below URL, https://jansson.readthedocs.io/en/2.13/apiref.html
EDKII jansson library wrapper:
*Known issue: Build fail with jansson/src/load.c, add code in load.c to conditionally use stdin according to HAVE_UNISTD_H macro. The PR is submitted to jansson open source community. https://github.com/akheron/jansson/pull/558