[erlang-questions] Erlang on ARM9?

Guy Wiener <>
Mon Oct 3 16:50:26 CEST 2011


My mistake: The build did not get stuck on some library, but erts is
dependent on libcurses, which is not a part of the toolchain that I use
(Sourcery lite).  Can I compile Erlang somehow without this lib? Curses! :)

Guy


On Mon, Oct 3, 2011 at 3:34 PM, Gustav Simonsson <> wrote:

> **
>
> You can put a file named 'SKIP' in the application directories in the lib
> directory, which will tell the build
> to exclude them.
>
> Other things you might be interested in doing to reach the bare minimum in
> terms of disk size for your
> resulting build:
>
>  * run arm-none-linux-gnueabi-strip (I think that's the right name given
> your xcomp conf)
> on the resulting erts binaries to strip them of debug symbols.
> * Call http://www.erlang.org/doc/man/beam_lib.html#strip_release-1 on the
> built beam files
> * Remove the following directories in the resulting erts directory, and in
> all resulting application
> directories: src, include, doc, man, examples.
> * Compress the Erlang applications into .ez files.
> * Use fancy gcc options like the -Os optimisation flag
>
> Regards,
> Gustav Simonsson
>
>
>
>
>
> On 03/10/11 14:53, Guy Wiener wrote:
>
> Thanks a lot, Gustav and Matthias, now I see the error of my ways :)
> After changing the built option to default, the configuration proceeds, but
> get stuck on some missing redundant library.
> How do I configure the cross-compilation to build only the bare minimum?  I
> don't need auxiliary libs, just basic Erlang.
>
>  Thanks again,
>   Guy.
>
> On Mon, Oct 3, 2011 at 2:46 PM, Gustav Simonsson <
> > wrote:
>
>>
>> Unless you are compiling on the ARM platform for the that platform,
>> your --build is most likely wrong, as Matt pointed out.
>>
>> You have erl_xcomp_build=arm-unknown-linux-gnu in your xcomp file,
>> try setting this value to 'guess' and see if that works, that will
>> run erts/autoconf/config.guess to grab the (most likely) correct
>> value for --build. It is also the default value for Erlang xcomp
>> conf files.
>>
>> Regards,
>> Gustav Simonsson
>>
>> ----- Ursprungligt meddelande -----
>>  Från: "Matthias Lang" <>
>> Till: "Guy Wiener" <>
>> Kopia: "Erlang Questions" <>
>>  Skickat: måndag, 3 okt 2011 14:33:03
>> Ämne: Re: [erlang-questions] Erlang on ARM9?
>>
>>  Hi,
>>
>> It's pretty odd that in your case --build is an ARM. Are you typing those
>> commands on an ARM system or on an x86?
>>
>> Or: I don't know what you're doing but it looks wrong.
>>
>> As a quick way to give you more information, I've put a log which shows
>> exactly what I do to build my ARM version in a clean erlang source tree:
>>
>>   http://www.corelatus.com/~matthias/cross_arm.log.gz
>>
>> The only non-comment difference between my ARM xconf file and the MIPS
>> one supplied with R14B03 is:
>>
>>   erl_xcomp_host=arm-linux
>>
>> Matt
>>
>> ----------------------------------------------------------------------
>>
>> On Monday, October 03, Guy Wiener wrote:
>>
>> > I've tried running the otp_build script with an xcomp configuration
>> file,
>> > but encountered the following problem: the configuration script tries to
>> run
>> > the file generated by the cross-compiler and fails, although the --host
>> flag
>> > is given.
>> >
>> > In details:
>> > I run "./otp_build configure
>> > --xcomp-conf=xcomp/erl-xcomp-arm-linux-gnu.conf"
>> > The bootstrap build system is configured properly.  When configuring the
>> > cross host system, it uses the following command:
>> >
>> > ./configure --disable-dynamic-ssl-lib --build=arm-unknown-linux-gnu
>> > --host=arm-unknown-linux-gnu
>> > CC=/opt/Sourcery_G++_Lite/bin/arm-none-linux-gnueabi-gcc
>> > CFLAGS=-mcpu=arm926ej-s
>> > CXX=/opt/Sourcery_G++_Lite/bin/arm-none-linux-gnueabi-g++
>> > LD=/opt/Sourcery_G++_Lite/bin/arm-none-linux-gnueabi-ld --disable-hipe
>> > --cache-file=/dev/null
>> >
>> > But then it causes the following error:
>> >
>> > checking whether the C compiler works... configure: error: cannot run C
>> > compiled programs.
>> > If you meant to cross compile, use `--host'.
>> >
>> > But the configuration command is given a proper --host option!
>> >
>> > I attach the cross compilation configuration file.  Any advice is warmly
>> > welcomed.
>> >
>> > Thanks,
>> >   Guy Wiener.
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>> 
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>>
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