[gdal-dev] ARM platform compatibility

[Tom Kazimiers]

Hi Adriano,

which version of CGAL did you compile for ARM?

I use 1.5.2 and reading shapefiles works very well.

Regards,
Tom

Adriano C Naspolini schrieb:
> Hi,
> I developed an application and it runs perfectly over X86. However,
> when i try to run it on ARM it stops reading shapefiles (actually it
> reads wrong coordinates). I wrote a simple program to tell just the
> first "point" coordinates.
>
> On X86:
> x=: -53.1275 y= -31.8682
>
> On ARM:
> x=: -1.00226e-13 y= -1.76938e+52
>
>
> Looking for the problem here, i found a thread from Etienne Dube on
> (2004-04-07 05:12:55 GMT), saying it's a byte ordering problem.
> "Each 32-bit word in the 64-bit double value is stored little-endian,
> but the most significative 32-bit word comes last in memory
> ("big-wordian")."
>
> Changing the word-order for the first feature inside the ".shp" ("11
> 36 3c bd 52 90 4a c0" to "52 90 4a c0 11 36 3c bd") and running it again:
>
> under X86:
> x=: -1.00226e-13 y= -31.8682
>
> under ARM
> x=: -53.1275 y= -1.76938e+52
>
> So, clearly, i have the same problem then Etienne. He sent a patch,
> but didn't made many tests...
> Is there a "final"solution for the problem? I couldn't see any answer
> to him.
>
> Regards,
>
> Adriano
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