tmedicci opened a new pull request, #2982:
URL: https://github.com/apache/nuttx-apps/pull/2982
## Summary
- interpreters/python: add wrapper to initialize Python
- This wrapper application checks if the Python's modules are already
mounted (and mounts them, if not), sets the necessary environment variables
and, then, runs the Python interpreter.
- interpreters/python: create Python's config files dynamically
- The `Setup.local` and the `config.site` files are used by Python's build
system to, respectively, enable or disable Python's modules and set/unset
available functions in the target system. These files are now set according to
NuttX's configs, enabling or disabling Python's features according to the
configs set on NuttX.
- interpreters/python: set ROMFS-generated data to const char
- This allows the data to be placed in the .rodata section, which can be
allocated in the flash or other read-only storage, freeing the
internal memory.
- interpreters/python: add patch to set `_PyRuntime` section
- By setting a specific region for the `_PyRuntime` structure, it is
possible to move it to the external memory, for instance, freeing the internal
memory (this structure occupies around 140KiB).
## Impact
This PR provides a set of improvements that allow running Python on NuttX
easily: it provides a wrapper that enables running the Python interpreter
directly with `python` and enables it to be built by architectures other than
the RISC-V QEMU. Documentation will be updated on NuttX's OS repository as soon
as we merge this PR.
## Testing
Internal CI testing + `rv-virt:python`:
### Building
```
$ make -j distclean && ./tools/configure.sh rv-virt:python && make -j$(nproc)
```
### Running
```
$ qemu-system-riscv32 -semihosting -M virt,aclint=on -cpu rv32 -smp 8 \
-global virtio-mmio.force-legacy=false \
-device virtio-serial-device,bus=virtio-mmio-bus.0 \
-chardev
socket,telnet=on,host=127.0.0.1,port=3450,server=on,wait=off,id=foo \
-device virtconsole,chardev=foo \
-device virtio-rng-device,bus=virtio-mmio-bus.1 \
-netdev
user,id=u1,hostfwd=tcp:127.0.0.1:10023-10.0.2.15:23,hostfwd=tcp:127.0.0.1:15001-10.0.2.15:5001
\
-device virtio-net-device,netdev=u1,bus=virtio-mmio-bus.2 \
-drive file=./mydisk-1gb.img,if=none,format=raw,id=hd \
-device virtio-blk-device,bus=virtio-mmio-bus.3,drive=hd \
-bios none -kernel ./nuttx -nographic
ABC[ 0.041394] board_userled: LED 1 set to 0
[ 0.042074] board_userled: LED 2 set to 0
[ 0.042178] board_userled: LED 3 set to 0
telnetd [4:100]
NuttShell (NSH) NuttX-10.4.0
nsh> python
[ 2.321624] check_and_mount_romfs: Mounting ROMFS filesystem at
target=/usr/local/lib with source=/dev/ram1
Python 3.13.0 (main, Jan 31 2025, 12:41:21) [GCC 13.2.0] on nuttx
Type "help", "copyright", "credits" or "license" for more information.
>>>
```
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