Re: [Jamvm-general] Cross-compiling fro ARM

[Robert L. <rob...@gm...>]

On 19 December 2012 15:28, modsrm <mo...@gm...> wrote:
>
> Hi Rob,
>
> thanks for the answer.
>
>> If configure still refuses to enter cross-compilation try
>> --disable-int-inlining.  It's the relocation checks for the
>> code-copying JIT that are done differently if cross-compiling so
>> disabling it will "fix" the problem.  However, performance will be
>> affected (how much depends on the ARM architecture).  The code-copying
>> JIT was enabled by default on ARM in JamVM 1.5.4.
>
> I think i did get the flags right, and configure does enter cross
> compilation mode.
> Few subfolders are indeed cross compiled ( os/linux among others ).
> Nonetheless compilation eventually fails with the error mentioned below
>

Please send me your config.log file and src/config.h.  By default,
runtime relocation checks is set to the value of $cross_compiling (an
autoconf variable).  The compute_relocatability.c file is built as
part of the compile time relocation checking, so $cross_compiling must
be set to "no".

Rob.

>> arm-unknown-linux-gnueabi-gcc -g -O2
>> -I/home/mods/development/embedded/tools/rootfs/include
>> -L/home/mods/development/embedded/tools/rootfs/lib
>> engine/compute_relocatability.c   -o engine/compute_relocatability
>> engine/compute_relocatability.c:24:17: fatal error: jam.h: No such file or
>> directory
>
>
> My plan it to analyze GC performance, so building without the code copying
> interpreter should not be a problem.
> Ill give it a shot, ill let you know.
>
> Thanks again.
>
> R.
>
>
>
> Robert Lougher wrote:
>>
>> On 19 December 2012 12:55, Robert Lougher <rob...@gm...> wrote:
>>> On 19 December 2012 09:44, modsrm <mo...@gm...> wrote:
>>>>
>>>> Hi there,
>>>>
>>>> ill bump this up cos im having the same problem while compiling JamVM
>>>> for
>>>> ARM.
>>>>
>>>> This is my configure command line:
>>>>
>>>> PATH=$PATH:/home/mods/development/embedded/tools/toolchain/arm-unknown-linux-gnueabi/bin/
>>>> ./configure --host=arm-unknown-linux-gnueabi
>>>> CPPFLAGS="-I/home/mods/development/embedded/tools/rootfs/include"
>>>> LDFLAGS="-L/home/mods/development/embedded/tools/rootfs/lib"
>>>>
>>>> This is the failure of make:
>>>>
>>>> arm-unknown-linux-gnueabi-gcc -g -O2
>>>> -I/home/mods/development/embedded/tools/rootfs/include
>>>> -L/home/mods/development/embedded/tools/rootfs/lib
>>>> engine/compute_relocatability.c   -o engine/compute_relocatability
>>>> engine/compute_relocatability.c:24:17: fatal error: jam.h: No such file
>>>> or
>>>> directory
>>>>
>>>> I hope somebody can help!
>>>>
>>>
>>> That file should not be built when cross-compiling.  This means that
>>> configure has not entered cross-compilation mode.  This is probably
>>> because you have only specified --host (the host is what you are
>>> building on, not the target)  The autoconf recommended way to enable
>>> cross-compilation is to specify both --build (the target) and --host
>>> (the host machine).  If they are different, cross-compilation mode is
>>> enabled, and no runtime checks are performed.
>>>
>>
>> I've got that the wrong way round, --build is the build machine type
>> (I'm guessing x86[_64] linux) and --host is the ARM machine.
>>
>> If configure still refuses to enter cross-compilation try
>> --disable-int-inlining.  It's the relocation checks for the
>> code-copying JIT that are done differently if cross-compiling so
>> disabling it will "fix" the problem.  However, performance will be
>> affected (how much depends on the ARM architecture).  The code-copying
>> JIT was enabled by default on ARM in JamVM 1.5.4.
>>
>> Rob.
>>
>>>
>>>> Thanks in advance,
>>>>
>>>> Roberto
>>>>
>>>>
>>>>
>>>> Jean-Marie Geffroy wrote:
>>>>>
>>>>> Hi,
>>>>>
>>>>> Thank you for this great JVM. I'm using it since 1 year embedded on
>>>>> ARM systems for prototypes and consider using even more now. However,
>>>>> I have a small problem when trying to cross-compile JamVM 1.5.4 for
>>>>> ARM. I get the following error message:
>>>>>
>>>>> engine/compute_relocatability.c:24:17: jam.h: No such file or directory
>>>>>
>>>>> Any idea about it ?
>>>>>
>>>>> Thank you very much in advance,
>>>>>
>>>>> Jean-MArie
>>>>>
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>>>>
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>
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