Is there an option to use nlohmann-json and disable exception with clang -fno-exceptions?

[zengtm]

We found this json class library elegant to use and easy to integrate.

Our next project is in an ARM TEE project. We use ARM LLVM 8.0.12 from Qualcomm, which supports C++11.

However, in the ARM TEE environment, we are running at tight real time constraint and cannot afford the cost of exception handling. The TEE OS layer disables with "-fno-excetions"

Question: what does it take to build nlohmann-json with -fno-exception, and still pass all tests
?

[nlohmann]

See https://nlohmann.github.io/json/home/exceptions/#switch-off-exceptions.

[nlohmann]

Quotes:

Exceptions are used widely within the library. They can, however, be switched off with either using the compiler flag -fno-exceptions or by defining the symbol JSON_NOEXCEPTION. In this case, exceptions are replaced by abort() calls. You can further control this behavior by defining JSON_THROW_USER (overriding throw), JSON_TRY_USER (overriding try), and JSON_CATCH_USER (overriding catch).

Note that JSON_THROW_USER should leave the current scope (e.g., by throwing or aborting), as continuing after it may yield undefined behavior.

[zengtm]

Great. Thank you.