M1 Mac build espruino

[espruino-discuss3]

Posted at 2022-02-27 by Chaz

Hey everyone,

I was trying to build and run espruino on my mac but struggling a little. I had to change 2 files to get the code to compile but now getting this error. Any pointers would be awesome!

ld: unaligned pointer(s) for architecture arm64

to get to this point i commented out line 891 from fixedpoint.h in lib/tensflow
also jsnative.c i changed line 157 to

 # ifdef USE_64BIT //without the space 

because of compiler errors i was seeing

[espruino-discuss3]

Posted at 2022-02-28 by @gfwilliams

So you are actually trying to run on Espruino on the Mac itself, rather than cross-compiling it for another target?

I'd suggest commenting out the TENSORFLOW line in boards/LINUX.py for starters - just to make sure you're not building that in initially and causing yourself more trouble.

I can't say I've ever actually built it for the M1 (or even to run under Mac OS - I deal mainly with Linux) but it doesn't generally have issues with running under 64 bit x86 (or ARM, obviously) so I wouldn't have thought there'd be big issues.

... you could maybe try and build for 32 bit ARM with -m32 as a command to the compiler - since obviously we know 32 bit ARM builds work fine.

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Posted at 2022-04-02 by opichals

Hi!

I just tried on an M1 machine. After removing the TENSORFLOW from boards/LINUX.py and fixing the ifdef as mentioned above I get the following:

$ make
...
ld: warning: pointer not aligned at address 0x1000ADC12 (_jswSymbolTables + 34 from gen/jswrapper.o)
ld: warning: pointer not aligned at address 0x1000ADC09 (_jswSymbolTables + 25 from gen/jswrapper.o)
ld: warning: pointer not aligned at address 0x1000ADC01 (_jswSymbolTables + 17 from gen/jswrapper.o)
ld: unaligned pointer(s) for architecture arm64
clang: error: linker command failed with exit code 1 (use -v to see invocation)

I guess I'd need to 'add few bytes somewhere' to get the pointers aligned... ?

Cheers!

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Posted at 2022-04-02 by opichals

Here is a pull-request that builds /MacBook Pro (13-inch, M1, 2020)/, the espruino --tests-all doesn't crash and this is the output:

espruino:  355 of 359 tests passed
espruino: FAILS:
espruino: /Users/standa/Prg/espruino/Espruino/tests/test_new_nested2_FAIL.js
espruino: /Users/standa/Prg/espruino/Espruino/tests/test_262_FAIL.js
espruino: /Users/standa/Prg/espruino/Espruino/tests/test_object_getOwnPropertyNames_FAIL.js
espruino: /Users/standa/Prg/espruino/Espruino/tests/test_number_constructor_FAIL.js
espruino: --------------------------------------------------

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Posted at 2022-04-04 by @gfwilliams

Thanks! This is great news!