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| author | Jim Mussared <jim.mussared@gmail.com> | 2019-12-07 22:31:04 +1100 |
|---|---|---|
| committer | Damien George <damien.p.george@gmail.com> | 2019-12-09 14:23:04 +1100 |
| commit | 193bc3702f35bc7b60ffd79e4f41ecd5db1fd383 (patch) | |
| tree | f3d1e4e9067ddb98ab434e3b32a2627c6c5af436 /mpy-cross | |
| parent | 381be9a745a2895f6333e5d7443f6d32fbe524de (diff) | |
| download | micropython-193bc3702f35bc7b60ffd79e4f41ecd5db1fd383.tar.gz micropython-193bc3702f35bc7b60ffd79e4f41ecd5db1fd383.zip | |
mpy-cross/README.md: Add notes about -march and -O.
Diffstat (limited to 'mpy-cross')
| -rw-r--r-- | mpy-cross/README.md | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/mpy-cross/README.md b/mpy-cross/README.md index e35b28b696..bf743a9031 100644 --- a/mpy-cross/README.md +++ b/mpy-cross/README.md @@ -22,4 +22,10 @@ the unix port of MicroPython requires the following: $ ./mpy-cross -mcache-lookup-bc foo.py +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 |