Lua has been ported to NuttX several times.   If you Google for "lua+NuttX" you find lots of hits, many from https://nuttx.yahoogroups.narkive.com.

This is from 2018:  https://github.com/tokoro10g/lua-nuttx

We really ought to talk to the Lua team and see if we can upstream the changes.  Unsupported ports in NuttX don't have good shelf life.

On 6/9/2021 1:08 PM, David S. Alessio wrote:
Also, if you need/want help with getting Lua to run on NuttX, let me know.  I 
had Lua 5.1.4 on NuttX (5 maybe it was) a long time ago.  I believe I submitted 
a patch to add it, but I can’t find it now.  The addition of Lua to NuttX was 
in the form of a subdirectory in apps containing only a Makefile and a few 
patches.  The Makefile would fetched the Lua tarball, applied the patches, and 
built it.  We can recreate this if interested…

Cheers,
-david

On Jun 9, 2021, at 11:51 AM, David S. Alessio <david.s.ales...@gmail.com> wrote:

Hello, Foti,

I wrote setjmp/longjmp for armv7-m some time ago.  The code should be in file:
        arch/arm/src/armv7-m/gnu/up_setjmp.S

If not, it’s attached here.

Cheers,
-david





<up_setjmp.S.gz>



On Jun 9, 2021, at 11:10 AM, Fotis Panagiotopoulos <f.j.pa...@gmail.com 
<mailto:f.j.pa...@gmail.com>> wrote:

Hi everyone!

I just started adding Lua to my NuttX-based project, but I have some
problems with it.
I am getting undefined references to longjmp/setjmp.

I am using an STM32F4 and GCC:
arm-none-eabi-gcc (GNU Tools for Arm Embedded Processors 9-2019-q4-major)
9.2.1 20191025 (release) [ARM/arm-9-branch revision 277599]

As I see, this combination of arch and compiler should work for
setjmp/longjmp, so I believe that something is misconfigured on my side.

Is there any special Kconfig option that I am not aware of? Do I need any
special compiler flags?

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