[erlang-questions] Erlang on ARM9?

Guy Wiener wiener.guy@REDACTED
Mon Sep 26 13:38:19 CEST 2011

Looks like I'll have to compile from source - Embedded Erlang is not what I
need because it includes its-own embedded Linux, and I need to install on an
existing Linux.

Can someone who has done this before be as kind as writing a minimal how-to
for cross-compiling Erlang to ARM?

Thanks again,

On Tue, Sep 20, 2011 at 5:16 PM, Paulo Ferreira <pdf@REDACTED> wrote:

> On 2011/09/19, at 09:14, Guy Wiener wrote:
> > Hello Erlangers,
> > I am checking an option to use Erlang to control a Linux-based device (a
> programmable helicopter).  Is there an efficient port of Erlang that works
> on top of an ARM9 processor?  If so, the usage scenario will be many
> processes running on a single node, with frequent message-passing, some
> access to binary files, and no shared data (no ETS, DETS or Mnesia).  Is
> this scenario likely to perform well on an embedded Erlang?
> >
> > Thanks,
> >   Guy Wiener,
> >   Dept. of Computer Science and Applied Math,
> >   Weizmann Institute for Science.
> Well, just it just compiles from source well.
> I have experience using a S3C2440 board at 400 Mhz and on some informal
> benchmarks ( ring ) it is just 7 times slower than a 2,2 Ghz core 2 Duo Mac
> book.
> From other erlang embedded experiences:
>        How do you control the hardware in C?  Linux device drivers are very
> slow, when compared to direct memory access.
>        Doing NIFs and dynamic libs may be hard.
>        ARM processors are usually supported by the latest gcc version, and
> that is VERY good for Erlang porting.
>        If you try to compile Erlang with an older gcc version, you may get
> all the kind of "strange and wonderful"  errors.
>        Check the gcc version of your toolchain!
> My best regards
> Paulo Ferreira
> P.S.: Please replace "strange and wonderful" by the suitable words in your
> native language....
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