Re: building qt4 for arm
Sander wrote: I believe the Armbrix Zero sells for $145 It has the same cpu and memory as the Arndale (Cortex-A15 1.7GHz dual core, 2GB 800MHz DDR3, and sata3), just a little less connectors: http://howchip.com/shop/item.php?it_id=BRIX5250 It's also on a three month lead time and has had virtually no documentation released. I'm not sure if any boards are actually in the wild or even if anyone has ever tried booting regular linux on it yet. I'm considering it as a potential buildd but i'm not yet happy enough with the state of the project to actually make a purchase. Right now i'd suggest the odriod U2 as the least bad build box option if you want to go the native route. Downsides are that storage and network end up on USB and you have to recompile the kernel to enable swap. -- To UNSUBSCRIBE, email to debian-qt-kde-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/511a998f.9090...@p10link.net
Re: building qt4 for arm
Rieker Flaik wrote: How do you do that? Any hints? One option worth considering is running qemu in user mode though binfmt_support. This has lower overheads than full hardware emulation and will be able to use multiple host CPUs for paralell builds (since each process runs in a seperate emulator). To do this 1: install qemu-user-static and binfmt_support on your host box (I would suggest using the version of qemu-arm-static from wheezy whatever version of debian you are running, the package has no dependencies so installing it on a squeeze box shouldn't be a problem) 2: copy /usr/bin/qemu-arm-static from your host box to the same location in your arm rootfs 3: chroot into the arm rootfs. -- To UNSUBSCRIBE, email to debian-qt-kde-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/511a9b71.4070...@p10link.net
Re: building qt4 for arm
On Tue, 12 Feb 2013 17:51:53 +0100 martinwguy wrote: > On 12 February 2013 17:36, Sander wrote: > > Ermis Papastefanakis wrote (ao): > >> I agree with Martin, it's better to compile Debian packages natively. I > >> would suggest to get something more powerful though. A dual core board like > >> a Pandaboard ES (1.2GHz) or a Snowball (1GHz) can come rather cheap > >> (150-200euros) and are pretty decent for such a task. > > > > I believe the Armbrix Zero sells for $145 > > It has the same cpu and memory as the Arndale (Cortex-A15 1.7GHz dual > > core, 2GB 800MHz DDR3, and sata3), just a little less connectors: > > ...and if you need to compile still faster, you can use distcc and > ccache on a farm of little ARM boards... though doing this on a > heterogeneous network of 200MHz ARMs in 2006 to bootstrap the armel > project was fairly excruciating, it should be less painful today. > The hard limit is that, for big packages such as GCC, you need more > than 256MB of RAM. That doesn't help with the problem that the default Debian build only supports Xorg and most boards are actually going to require QtEmbedded and framebuffer support. If you've only got 256MB of RAM, Xorg is seriously painful. -- Neil Williams = http://www.linux.codehelp.co.uk/ pgpwnij7HkxT9.pgp Description: PGP signature
Re: building qt4 for arm
Ermis Papastefanakis wrote (ao): > I agree with Martin, it's better to compile Debian packages natively. I > would suggest to get something more powerful though. A dual core board like > a Pandaboard ES (1.2GHz) or a Snowball (1GHz) can come rather cheap > (150-200euros) and are pretty decent for such a task. I believe the Armbrix Zero sells for $145 It has the same cpu and memory as the Arndale (Cortex-A15 1.7GHz dual core, 2GB 800MHz DDR3, and sata3), just a little less connectors: http://howchip.com/shop/item.php?it_id=BRIX5250A Sander -- To UNSUBSCRIBE, email to debian-qt-kde-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/20130212163607.GA19316@panda
Re: building qt4 for arm
On 12 February 2013 17:36, Sander wrote: > Ermis Papastefanakis wrote (ao): >> I agree with Martin, it's better to compile Debian packages natively. I >> would suggest to get something more powerful though. A dual core board like >> a Pandaboard ES (1.2GHz) or a Snowball (1GHz) can come rather cheap >> (150-200euros) and are pretty decent for such a task. > > I believe the Armbrix Zero sells for $145 > It has the same cpu and memory as the Arndale (Cortex-A15 1.7GHz dual > core, 2GB 800MHz DDR3, and sata3), just a little less connectors: ...and if you need to compile still faster, you can use distcc and ccache on a farm of little ARM boards... though doing this on a heterogeneous network of 200MHz ARMs in 2006 to bootstrap the armel project was fairly excruciating, it should be less painful today. The hard limit is that, for big packages such as GCC, you need more than 256MB of RAM. M -- To UNSUBSCRIBE, email to debian-qt-kde-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/CAL4-wQrnfch6yK_0ie-TtWF=mCSc=jxt2qa4frdguai3rjl...@mail.gmail.com
Re: building qt4 for arm
Hello, I agree with Martin, it's better to compile Debian packages natively. I would suggest to get something more powerful though. A dual core board like a Pandaboard ES (1.2GHz) or a Snowball (1GHz) can come rather cheap (150-200euros) and are pretty decent for such a task. Ermis On Tue, Feb 12, 2013 at 5:06 PM, martinwguy wrote: > On 12 February 2013 16:28, Rieker Flaik wrote: > > I'm running debian arm and need to rebuild libqt4 with an additional > > patch. What is the best and fastest way to rebuild that package? > > Build it on an ARM box, as Debian packages (in general) need to build > on native hardware. > > > > > I also want to mention that I already tried several ways (cross-compile > > and qemu): > > > > 1. cross-compile: > > I have installed the emdebian toolchain by doing: > > > >aptitude install emdebian-archive-keyring > >echo "deb http://www.emdebian.org/debian/ squeeze main" >> > /etc/apt/sources.list > >aptitude update > >aptitude install gcc-4.4-arm-linux-gnueabi cpp-4.4-arm-linux-gnueabi > > > > Then I did: > >apt-get source libqt4-dev > >dpkg-buildpackage -aarmel -j4 > > > > The build-process started but died after 3 minutes with messages like > > this: > > > >animation/qsequentialanimationgroup.cpp:467: warning: unused variable > ‘q’ > >../../include/QtCore/../../src/corelib/arch/qatomic_arm.h: Assembler > messages: > >../../include/QtCore/../../src/corelib/arch/qatomic_arm.h:131: Error: > no such instruction: `swpb %al,%bpl,[%rbx]' > >../../include/QtCore/../../src/corelib/arch/qatomic_arm.h:131: Error: > no such instruction: `swpb %al,%bpl,[%rbx]' > > > > 2. qemu: takes forever and only one Host-CPU is used. > > QEMU runs at an equivalent of about 1/12th of the host CPU frequency, > so a 2400MHz 386 emulates at about the speed of a 200MHz ARM CPU. > > > I'm still searching for a practicable way of rebuilding bigger debian > > packages. > > There's a 500MHz 512MB Debian armel box here that you can use over SSH > - write privately if that would be useful. Not that it won't still > take forever... (where forever is defined as any time period longer > than an hour :) > > For greater speed, you can buy/borrow/use something like a sheevaplug > or whatever the cheap top-end ARM gadget is these days. > >M > > > -- > To UNSUBSCRIBE, email to debian-embedded-requ...@lists.debian.org > with a subject of "unsubscribe". Trouble? Contact > listmas...@lists.debian.org > Archive: > http://lists.debian.org/cal4-wqp8emz-7ccuy7bldz1no-fu+evk3ggw1-poyjfhfj...@mail.gmail.com > >
Re: building qt4 for arm
On 12 February 2013 16:28, Rieker Flaik wrote: > I'm running debian arm and need to rebuild libqt4 with an additional > patch. What is the best and fastest way to rebuild that package? Build it on an ARM box, as Debian packages (in general) need to build on native hardware. > > I also want to mention that I already tried several ways (cross-compile > and qemu): > > 1. cross-compile: > I have installed the emdebian toolchain by doing: > >aptitude install emdebian-archive-keyring >echo "deb http://www.emdebian.org/debian/ squeeze main" >> > /etc/apt/sources.list >aptitude update >aptitude install gcc-4.4-arm-linux-gnueabi cpp-4.4-arm-linux-gnueabi > > Then I did: >apt-get source libqt4-dev >dpkg-buildpackage -aarmel -j4 > > The build-process started but died after 3 minutes with messages like > this: > >animation/qsequentialanimationgroup.cpp:467: warning: unused variable ‘q’ >../../include/QtCore/../../src/corelib/arch/qatomic_arm.h: Assembler > messages: >../../include/QtCore/../../src/corelib/arch/qatomic_arm.h:131: Error: no > such instruction: `swpb %al,%bpl,[%rbx]' >../../include/QtCore/../../src/corelib/arch/qatomic_arm.h:131: Error: no > such instruction: `swpb %al,%bpl,[%rbx]' > > 2. qemu: takes forever and only one Host-CPU is used. QEMU runs at an equivalent of about 1/12th of the host CPU frequency, so a 2400MHz 386 emulates at about the speed of a 200MHz ARM CPU. > I'm still searching for a practicable way of rebuilding bigger debian > packages. There's a 500MHz 512MB Debian armel box here that you can use over SSH - write privately if that would be useful. Not that it won't still take forever... (where forever is defined as any time period longer than an hour :) For greater speed, you can buy/borrow/use something like a sheevaplug or whatever the cheap top-end ARM gadget is these days. M -- To UNSUBSCRIBE, email to debian-qt-kde-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/CAL4-wQp8emz-7CCUY7BLdz1no-FU+evK3gGw1-POYjFhfj=n...@mail.gmail.com
building qt4 for arm
Hi all I'm running debian arm and need to rebuild libqt4 with an additional patch. What is the best and fastest way to rebuild that package? I also want to mention that I already tried several ways (cross-compile and qemu): 1. cross-compile: I have installed the emdebian toolchain by doing: aptitude install emdebian-archive-keyring echo "deb http://www.emdebian.org/debian/ squeeze main" >> /etc/apt/sources.list aptitude update aptitude install gcc-4.4-arm-linux-gnueabi cpp-4.4-arm-linux-gnueabi Then I did: apt-get source libqt4-dev dpkg-buildpackage -aarmel -j4 The build-process started but died after 3 minutes with messages like this: animation/qsequentialanimationgroup.cpp:467: warning: unused variable ‘q’ ../../include/QtCore/../../src/corelib/arch/qatomic_arm.h: Assembler messages: ../../include/QtCore/../../src/corelib/arch/qatomic_arm.h:131: Error: no such instruction: `swpb %al,%bpl,[%rbx]' ../../include/QtCore/../../src/corelib/arch/qatomic_arm.h:131: Error: no such instruction: `swpb %al,%bpl,[%rbx]' 2. qemu: I pulled the last version of qemu and build it for "arm-softmmu". Baked a kernel for machine "realview-pbx-a9" so that SMP could be enabled for 4 CPUs. Qemu boots the kernel fine so that I was able to boot into a prior bootstrapped debian over NFS. Here I was able to start a "dpkg-buildpackage -j4" for qt4: But it takes forever and only one Host-CPU is used. I'm still searching for a practicable way of rebuilding bigger debian packages. How do you do that? Any hints? Thanks in advance Rik -- To UNSUBSCRIBE, email to debian-qt-kde-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/1360682897.21620.48.camel@lovely
