micropython/mpy-cross
Jim Mussared e42809531f mpy-cross/mpy_cross: Add Python wrapper for mpy-cross.
Rather than invoking mpy-cross directly via system/subprocess in our build
tools and other tools, this provides a Python interface for it.

Based on https://gitlab.com/alelec/mpy_cross (with the intention of
eventually replacing that as the "official" pypi distribution once setup.py
etc are added).

Signed-off-by: Jim Mussared <jim.mussared@gmail.com>
2022-09-05 17:06:09 +10:00
..
mpy_cross mpy-cross/mpy_cross: Add Python wrapper for mpy-cross. 2022-09-05 17:06:09 +10:00
Makefile mpy-cross/Makefile: Respect existing CFLAGS and LDFLAGS. 2022-08-08 23:45:32 +10:00
README.md all: Remove MICROPY_OPT_CACHE_MAP_LOOKUP_IN_BYTECODE. 2021-09-16 16:04:03 +10:00
gccollect.c all: Update to point to files in new shared/ directory. 2021-07-12 17:08:10 +10:00
main.c py/builtin: Clean up and simplify import_stat and builtin_open config. 2022-05-25 13:04:45 +10:00
mpconfigport.h mpy-cross,unix: Include alloca.h for NetBSD. 2022-08-23 13:39:18 +10:00
mphalport.h mpy-cross: Make build independent of extmod directory. 2018-07-10 14:11:28 +10:00
mpy-cross.vcxproj windows: Unify project file headers. 2022-02-25 16:41:11 +11:00
qstrdefsport.h mpy-cross: Add new component, a cross compiler for MicroPython bytecode. 2016-02-25 10:12:21 +00:00

README.md

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