Cross-Compile on Banana Pi

[Sebbo]

Hi guys!

I successfully cross-compiled Qt on my Raspberry Pi but due to performance issues I needed to get faster hardware. Therefore I bought a Banana Pi which does the job.
Apparently I'm not able to cross-compile Qt on that device. My host system is Ubuntu 14.04.1 LTS and the Pi runs with Bananian Linux.
I already tried the "Beginners guide":http://qt-project.org/wiki/RaspberryPi_Beginners_guide and used different image files.
Well I guess I'm using the wrong toolchain since I only found the gcc-4.7-linaro-rpi-gnueabihf which is for the Raspberry Pi.

Did anyone face the same problems or is there a guide like there is for the Raspberry Pi?

I am very grateful for help or any advice!! :)

Thanks.

Seb

[SGaist]

Hi and welcome to devnet,

What error are you getting ?

[tomasz3dk]

The Banana PI board is similar to Cubieboard2, so you can try "this":http://wickwire2099.blogspot.com/2014/02/qt5-on-cubieboard-a10a20.html tutorial.

[Sebbo]

Thank you so much for your quick replies.

SGaist:
The errors appear while running the ./configure command with the following parameters:

@./configure -v -opengl es2 -device linux-rasp-pi-g++ -device-option CROSS_COMPILE=~/opt/gcc-4.7-linaro-rpi-gnueabihf/bin/arm-linux-gnueabihf- -sysroot /mnt/ban-pi-rootfs -opensource -confirm-license -optimized-qmake -reduce-exports -release -make libs -prefix /usr/local/qt5pi@

The errors itself are as follows (just a small extract):

@/opt/gcc-4.7-linaro-rpi-gnueabihf/bin/arm-linux-gnueabihf-g++ -c -pipe -marm -mfpu=vfp -mtune=arm1176jzf-s -march=armv6zk -mabi=aapcs-linux -mfloat-abi=hard --sysroot=/mnt/ban-pi-rootfs -g -Wall -W -fPIE -I../../mkspecs/devices/linux-rasp-pi-g++ -I. -o arch.o arch.cpp
arch.cpp:45:19: fatal error: stdio.h: No such file or directory
compilation terminated.
make: *** [arch.o] Error 1
Unable to determine architecture!

Could not determine the target architecture!
Turn on verbose messaging (-v) to see the final report.
Determining architecture... ()
g++ -c -pipe -g -Wall -W -fPIE -I../../mkspecs/linux-g++ -I. -o arch.o arch.cpp
g++ -o arch arch.o
Found architecture in binary
CFG_HOST_ARCH="i386"
CFG_HOST_CPUFEATURES=""
System architecture: 'unknown'
Host architecture: 'i386'
C++11 auto-detection... ()

[..]

/opt/gcc-4.7-linaro-rpi-gnueabihf/bin/../lib/gcc/arm-linux-gnueabihf/4.7.2/../../../../arm-linux-gnueabihf/include/c++/4.7.2/arm-linux-gnueabihf/bits/os_defines.h:40:22: fatal error: features.h: No such file or directory
compilation terminated.
make: *** [c++11.o] Error 1
C++11 disabled.
floatmath auto-detection... ()
@
etc.

diabolic:
Thanks for the link. I'll give it a try and get back to you as soon as I tested it.

[tomasz3dk]

Of course in this tutorial you must use rootfs from bananapi, instead from cubieboard. Toolchain can be the same (banana and cubieboard have same CPU and GPU).

[Sebbo]

-Sorry but I already get stuck after the first few steps.-

-I downloaded all the necessary files like the image file for the BananaPi, the toolchain and the sunxi-bsp.-

-But there is no BananaPi environment selectable for the ./configure command of the sunxi-bsp. This needs to be -modified according to "this tutorial":https://github.com/bananapi-dev/BPi/blob/master/HowToBuild_BPi_image.en.txt .-

-As pointed out in recital 4 the environment needs to be set as follows:-
-$ source bpi_env.sh-

-But I can't figure out where to get that file..-
-Does it work with the "cubietruck" or "cubieboard2" entry as well?-

NVM - got that one working!

[tomasz3dk]

Mark topic as solved.

[Sebbo]

Sorry, my bad. The comment was misleading.
I found out how to set up the BananaPi environment for the sunxi-bsp but after hours of loading/working I still didn't manage to cross-compile the Pi..

[Sebbo]

Well, I don't find any rootfs for the BananaPi. In particular, for the Bananian Linux which is a debian based image.
Do you have any suggestions where I can get those since the "Linaro Releases":https://releases.linaro.org/ site doesn't provide it?