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6236 :: Finally, I can do functional programming on tiny embedded systems

• foldl (orginal) [2020-04-20T08:45:11+02:00] view original

  I am using the option given in compiler user guide: --os:any --gc:arc -d:useMalloc. Several kB RAM is reserved for heap.

  What are the differences between --os:any and --os:standalone? I can't find this information in the documents. For a simple project, the generated binary is about ~1kB if compiled with --os:standalone, but ~16kB if --os:any.

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• Araq (orginal) [2020-04-20T10:47:18+02:00] view original

  Well --os:any -d:useMalloc basically delegates the problem of "how big is it?" to the underlying C library. At least that's the plan, maybe we missed something, issues/PRs are welcome.

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• foldl (orginal) [2020-04-21T10:37:46+02:00] view original

  With following options, the generated binary is reduced significantly. I am happy with --gc:arc -d:useMalloc. Its footprint is so small.

  define = "danger"
  checks="off"
  assertions="off"
  stackTrace="off"
  lineTrace="off"
  Run

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• Araq (orginal) [2020-04-21T10:52:35+02:00] view original

  Also use --panics:on to improve the Nim's optimizer aggressiveness.

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• foldl (orginal) [2020-04-21T11:05:51+02:00] view original

  Oh, with --panics:on, for a really complex bluetooth app, binary size reduced from 5.6kB to 5.2kB, about 10% of flash is saved!

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• moigagoo (orginal) [2020-04-21T12:39:41+02:00] view original

  Or having a talk at the upcoming online Nim conference.

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• yassend (orginal) [2020-04-22T16:26:09+02:00] view original

  @foldl: sounds really good! Do you mind sharing a bit more? Like, what's the hardware you deploy on?

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• cumulonimbus (orginal) [2020-04-22T20:44:27+02:00] view original

  Is --gc:orc still a thing? It says in the docs it is hard to reason about (which is understandable), but is it possible to use with a time limit like the old --refc? Are there any other docs about it?

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• zevv (orginal) [2020-04-22T22:41:16+02:00] view original

  @foldl: Consider adding these as well: --exceptions:goto -d:noSignalHandler to further decrease your binary size.

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• Araq (orginal) [2020-04-23T00:27:52+02:00] view original

  --gc:orc is still in development and might ship with 1.4.

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• RichardWoodard (orginal) [2021-02-18T12:58:20+01:00] view original

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