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This commit makes use of the new native code loading changes to provide a test bed for a target with the native compiler framework available but without no code loading capabilities. mpy-cross already fully disables native code loading, however those changes do not really propagate anywhere outside `py/persistentcode`. Recent changes in the code loading framework actually touch the core code in a few more places, but no default CI target is configured to run with the new native code loading defines switched off. Given that mpy-cross doesn't really need to load code anyway, it is a good target for setting up a configuration that goes a bit deeper when it comes to disabling code loading. Since mpy-cross is built several times during the CI process, it can be repurposed as an early warning system for issues related to these new changes. Normal operation should not be affected in any way. Signed-off-by: Alessandro Gatti <a.gatti@frob.it>
MicroPython cross compiler
This directory contains the MicroPython cross compiler, which runs under any Unix-like system and compiles .py scripts into .mpy files.
Build it as usual:
$ make
The compiler is called mpy-cross. Invoke it as:
$ ./mpy-cross foo.py
This will create a file foo.mpy which can then be copied to a place accessible
by the target MicroPython runtime (eg onto a pyboard's filesystem), and then
imported like any other Python module using import foo.
Different target runtimes may require a different format of the compiled bytecode, and such options can be passed to the cross compiler.
If the Python code contains @native or @viper annotations, then you must
specify -march to match the target architecture.
Run ./mpy-cross -h to get a full list of options.
The optimisation level is 0 by default. Optimisation levels are detailed in https://docs.micropython.org/en/latest/library/micropython.html#micropython.opt_level