[HOWTO] Compiling new kernels on Harmattan device - Page 2 - maemo.org

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jackburton	2013-03-18 , 13:50
Posts: 466 \| Thanked: 661 times \| Joined on Jan 2009	#11

Originally Posted by rcolistete

How much time ?

I'll time the next build now that I have the PR1.3 sources and want to use that.

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rainisto	2013-03-18 , 17:24
Posts: 1,067 \| Thanked: 2,383 times \| Joined on Jan 2012 @ Finland	#12

Originally Posted by jackburton

Thanks for the info!

If I want to use my own config inside dpkg-buildpackage, where should I specify that?

it reads debian/rules-file, currently it uses this line:

Code:

DEFCONFIG := rm581_defconfig

Kernel compilation in 8-core scratchbox takes around 15minutes. And around 10mins if you have SSD.

So in multicore sb you just run:

Code:

DEB_BUILD_OPTIONS=parallel=10 dpkg-buildpackage -rfakeroot

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Last edited by rainisto; 2013-03-18 at 17:31.

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juiceme	2013-03-18 , 17:47
Community Council \| Posts: 4,920 \| Thanked: 12,867 times \| Joined on May 2012 @ Southerrn Finland	#13

How on earth do you manage to get compile to last that that long?

I timed normal openmode harmattan kernel & modules compile in scratchbox as 9 minutes on my ancient 2-core T9600@2.8GHz

When building Nemo kernel on gnuabi toolchain it's even faster, something under 7 minutes...

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jalyst	2013-03-18 , 18:47
Moderator \| Posts: 5,320 \| Thanked: 4,464 times \| Joined on Oct 2009	#14

Originally Posted by jackburton

So now that I have Bluetooth tethering working, does anybody know if the Bluetooth 4 work mentioned in these forums got anywhere? Tethering is now only limited by Bluetooth 2 speeds. Would love more...

Nowhere last I checked, InDT had supposedly more-or-less finished it*
http://talk.maemo.org/showthread.php?t=85118
There's some other threads too IIRC , pretty sure it's still stalled...
Please do this (BT4 LE that is) if at all feasible!

*actually I had a chat with them, can't recall all the detail, maybe I'll dig-up the correspondence later

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rainisto	2013-03-18 , 20:25
Posts: 1,067 \| Thanked: 2,383 times \| Joined on Jan 2012 @ Finland	#15

Originally Posted by juiceme

How on earth do you manage to get compile to last that that long?

I timed normal openmode harmattan kernel & modules compile in scratchbox as 9 minutes on my ancient 2-core T9600@2.8GHz

When building Nemo kernel on gnuabi toolchain it's even faster, something under 7 minutes...

Most of the time is spend on creating 14 different kernel debian packages, since dpkg-buildpackage also builds debug kernel and debug modules etc.

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juiceme	2013-03-18 , 21:26
Community Council \| Posts: 4,920 \| Thanked: 12,867 times \| Joined on May 2012 @ Southerrn Finland	#16

Ah of course. I misread your previous posting, of course dpkg-buildpackage is going to take a LOT more time

Sorry about that!

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jackburton	2013-03-19 , 10:12
Posts: 466 \| Thanked: 661 times \| Joined on Jan 2009	#17

Originally Posted by rcolistete

How much time ?

For make zImage and modules:

real 83m54.757s
user 76m10.234s
sys 5m38.719s

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rainisto	2013-03-19 , 13:17
Posts: 1,067 \| Thanked: 2,383 times \| Joined on Jan 2012 @ Finland	#18

and on desktop (8x3.0GHz Intel Xeon):
> time make -j10 ARCH=arm zImage modules
real 3m15.831s
user 17m52.919s
sys 1m14.729s

Last edited by rainisto; 2013-03-19 at 13:20.

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rcolistete	2013-03-19 , 22:07
Posts: 1,269 \| Thanked: 3,961 times \| Joined on May 2011 @ Brazil	#19

Originally Posted by jackburton

For make zImage and modules:

real 83m54.757s
user 76m10.234s
sys 5m38.719s

I've cited your timings here.

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jackburton	2013-04-29 , 12:31
Posts: 466 \| Thanked: 661 times \| Joined on Jan 2009	#20

I have built a new PR1.3 open-mode kernel for my N9 that includes NAT modules and the BRIDGE driver.

http://www.ctrl-h.net/nokia/harmatta...3/kernel/btlc/

My goal is to use the bridge utils from debian 6 (squeeze) installed into the SDK chroot.