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clipka <ano### [at] anonymous org> wrote:
> Not so strange if you recall that the porting work for Linux (and
> probably also BSD) to run on ARM platforms had been done already.
>
> One possible difference might be the floating point math, which doesn't
> seem to be as straightforward as we're used to on x86 machines. I guess
> there is /some/ reason why the official reference Linux distro for the
> Pi is built to use software-emulated floating point math, rather than
> the on-chip floating point hardware.
>
>
> Even if it turns out that there's nothing else to do, there's still
> porting work to be done in the sense of checking whether the
> platform-specific header files make sense for the ARM.
I hope you're porting for Raspbian as it supports hardfloat.
Raspbian also became the recommended distro some months ago.
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I'm more into 'physical computing' these days. I just bought an Arduino Uno, to
play around with (and to learn some rudiments of the C language.) The Raspberry
Pi is for geeks. And, of course, I'm not one of *them*, Heaven forbid... :-P
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Am 11.12.2012 10:42, schrieb Aydan:
> I hope you're porting for Raspbian as it supports hardfloat.
> Raspbian also became the recommended distro some months ago.
It's apparently also the distro that came with my Pi (from RS
Components), so yes - that's going to be my target platform.
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Am 11.12.2012 12:27, schrieb Kenneth:
> I'm more into 'physical computing' these days. I just bought an Arduino Uno, to
> play around with (and to learn some rudiments of the C language.) The Raspberry
> Pi is for geeks. And, of course, I'm not one of *them*, Heaven forbid... :-P
You're joking, right? Granted, the 6 analog inputs are neat, but aside
from that it's just a mere abacus compared to the Pi - which is about
the same price, but a guesstimated 100-fold computing power and memory
capacity. Not to mention the HDMI output, USB-A connectors, Ethernet
port, and - best of all - a standard Micro-USB-style 5V power connector :-)
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clipka <ano### [at] anonymousorg> wrote:
> You're joking, right? Granted, the 6 analog inputs are neat, but aside
> from that it's just a mere abacus compared to the Pi...
Yes, joking. Good analogy, BTW. ;-) The Pi looks like a fantastic little
machine...but way above my computing skills, sad to say. I'm just looking for
the Arduino to easily control some external thingies and gizmos. I did consider
the Pi, though (briefly!)
The Wikipedia entry about the Pi reads more like an enthusiastic sales pitch
than a neutral article. That was surprising.
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Am 12.12.2012 00:18, schrieb Kenneth:
> The Wikipedia entry about the Pi reads more like an enthusiastic sales pitch
> than a neutral article. That was surprising.
If it can stand up to its promises, I wonder how one couldn't be
enthusiastic about it, given its price tag.
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Am 10.12.2012 15:26, schrieb clipka:
> ... the Raspberry Pi is not!
>
> I just got mine, after months of waiting...
>
> First task: Try to communicate with it.
Okay, first step was a piece of cake: Shove in the SD card with the
Raspberry Pi OS, hook up the Pi's HDMI port to a display (a HDMI/DVI-D
adapter cable will work fine), plug a keyboard into the USB port, and
power it up with a standard MicroUSB-style power adapter.
There. Linux boots, ultimately firing up some minimalistic GUI. A bit
cumbersome because we haven't plugged in a mouse, but what the heck,
real programmers don't need one.
Second step: Hook up the Pi's Ethernet port to the DSL router, fire up
the package management, and see what happens.
Nice. It connects to the 'net without any fuss, updates its package
list, and finds me 95 packages to update. But first things first: I want
the dev packages for boost, libpng, openexr and the like. But the thing
refuses: It demands that I become root, and I have not the slightest
idea what the root password is.
A bit of browsing the Wiki on eLinux later, I find that there's no
password to know, and that instead you are supposed to do everything via
"sudo" - which obviously you can't if you're starting the programs via a
GUI. But they tell me how to equip root with a password, which I do.
Fine, now I can get the package manager to actually do something useful.
Third step: Communicate with the Pi remotely from my Windows machine.
Turns out that SSH is enabled by default and works fine, and there's a
good how-to section on the Wiki for setting up the Pi as a Samba-based
file server, with step-by-step instructions that even a total noob can
follow.
I would have liked to set up the Pi to remotely access its desktop via
Xming, but XDMCP doesn't run out of the box, and there's no fancy how-to
for it on the Wiki, so I'll stick with SSH for now. After all, what else
am I expecting to do than run "./configure", "make install" and "povray
foo.pov" from the command prompt? :-)
So now for task 2 step 1: Try to compile the most recent POV-Ray 3.7
development version on the Pi. I think I already have all the necessary
libraries installed, but we'll see...
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Am 12.12.2012 14:56, schrieb clipka in povray.off-topic:
> So now for task 2 step 1: Try to compile the most recent POV-Ray 3.7
> development version on the Pi. I think I already have all the necessary
> libraries installed, but we'll see...
Downloaded & unpacked the original povray-3.7.0.RC6.tar.gz fresh from
povray.org.
"./compile" is considerably slower than on my x86 Linux machine (maybe
the SD card is a bottleneck?), but seems to be happy with what it finds.
I'm not, as I forgot to specify "--prefix=...", so I had to run it again.
"make check" is a slow crawl, which again I blame on the SD card. What
worries me a bit is that I get repeated assembler warnings like:
{standard input}: Assembler messages:
{standard input}:2148: Warning: swp{b} use is deprecated for this
architecture
I wonder what this means; for the time being I suspect this to be a flaw
in the Raspbian distro, specifically the compiler suite.
Anyway, this is going to take ages, so unless this first build already
turns out to run like a charm, the next task is probably to hook up some
external HD via USB and see if that speeds things up. Maybe even a USB
stick will do.
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On 12/12/2012 09:44 AM, clipka wrote:
> Am 12.12.2012 14:56, schrieb clipka in povray.off-topic:
>
>> So now for task 2 step 1: Try to compile the most recent POV-Ray 3.7
>> development version on the Pi. I think I already have all the necessary
>> libraries installed, but we'll see...
>
> Downloaded & unpacked the original povray-3.7.0.RC6.tar.gz fresh from
> povray.org.
>
> "./compile" is considerably slower than on my x86 Linux machine (maybe
> the SD card is a bottleneck?), but seems to be happy with what it finds.
> I'm not, as I forgot to specify "--prefix=...", so I had to run it again.
>
> "make check" is a slow crawl, which again I blame on the SD card. What
> worries me a bit is that I get repeated assembler warnings like:
>
> {standard input}: Assembler messages:
> {standard input}:2148: Warning: swp{b} use is deprecated for this
> architecture
>
> I wonder what this means; for the time being I suspect this to be a flaw
> in the Raspbian distro, specifically the compiler suite.
>
> Anyway, this is going to take ages, so unless this first build already
> turns out to run like a charm, the next task is probably to hook up some
> external HD via USB and see if that speeds things up. Maybe even a USB
> stick will do.
>
must be like having christmas come a few weeks early ( a new toy to play
with) ... have fun
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