RPI installing cross-compiling

K-Str

Hello,
I'm working on the installation of qt for cross-compiling.
For the installation I followed tho wiki:
https://wiki.qt.io/RaspberryPi2EGLFS
The Qt-Version is: 5.10.1 for raspberry#zero w
On step 10 I tried to execute the following command:
./configure -release -opengl es2 -device linux-rasp-pi-g++ -device-option CROSS_COMPILE=~/raspi/tools/arm-bcm2708/gcc-linaro-arm-linux-gnueabihf-raspbian/bin/arm-linux-gnueabihf- -sysroot ~/raspi/sysroot -opensource -confirm-license -make libs -prefix /usr/local/qt5pi -extprefix ~/raspi/qt5pi -hostprefix ~/raspi/qt5 -v
But I got an error
You don't seem to have 'make' or 'gmake' in your PATH.
Cannot proceed.
This is my PC:
Ubuntu 18.04.2 LTS
4.15.0-29-generic x86_64

Please could somebody give me a solution?
Thanks in advance.

Pablo J. Rogina

@K-Str as the error says, is make command available in your PATH?

From command line you can try:

make --version

K-Str

@Pablo-J.-Rogina said in RPI installing cross-compiling:

make --version

Hi Pablo-J.Rogina;
thanks for your helpful answer,
This command make --version said no make installed.
After I installed make,
Built for x86_64-pc-linux-gnu
Copyright (C) 1988-2014 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later http://gnu.org/licenses/gpl.html
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.
I continued with the command
./configure -release -opengl es2 -device linux-rasp-pi-g++ -device-option CROSS_COMPILE=~/raspi/tools/arm-bcm2708/gcc-linaro-arm-linux-gnueabihf-raspbian/bin/arm-linux-gnueabihf- -sysroot ~/raspi/sysroot -opensource -confirm-license -make libs -prefix /usr/local/qt5pi -extprefix ~/raspi/qt5pi -hostprefix ~/raspi/qt5 -v
and the error
make: g++: Command not found
Makefile:242: recipe for target 'main.o' failed
make: *** [main.o] Error 127
appeared.
I installed g++
Thread model: posix
gcc version 7.3.0 (Ubuntu 7.3.0-27ubuntu1~18.04)
Then I cleaned the everything like suggested on the end of step 10
git clean -dfx
and repeated step 10 again.
When I execute the command again I got the error:
Project ERROR: Cannot run target compiler '/home/kurt/raspi/tools/arm-bcm2708/gcc-linaro-arm-linux-gnueabihf-raspbian/bin/arm-linux-gnueabihf-g++'. Output:
sh: 1: /home/kurt/raspi/tools/arm-bcm2708/gcc-linaro-arm-linux-gnueabihf-raspbian/bin/arm-linux-gnueabihf-g++: not found
Maybe you forgot to setup the environment?
Now I have no idea what to do. How can I check the setting in environment?
The command
env
shows a correct HOME
The command
ls /home/kurt/raspi/tools/arm-bcm2708/gcc-linaro-arm-linux-gnueabihf-raspbian/bin/arm-linux-gnueabihf-g++
shows the correct file.

Now I have no idea what to do!
Please could somebody give me a hint?

Regards
Kurt

cranz32

@K-Str said in RPI installing cross-compiling:

This is my PC:
Ubuntu 18.04.2 LTS
4.15.0-29-generic x86_64

since your using a 64-bit pc...it was stated at step #10:

-device-option CROSS_COMPILE=~/raspi/tools/arm-bcm2708/gcc-linaro-arm-linux-gnueabihf-raspbian-x64/bin/arm-linux-gnueabihf-

K-Str

Hi cranz32,
thank you very much for this tipp.
But now an other question> must I also add the parameter
-no-use-gold-linker
because I use qt5.10.1_

cranz32

@K-Str

must I also add the parameter
-no-use-gold-linker
because I use qt5.10.1_

since your cross compiling then yes. so far i've tested https://wiki.qt.io/RaspberryPi2EGLFS upto 5.12.0. haven't tried 5.12.1 as of yet.

K-Str

Hello,
thanks to all. The installation is perfect. But....
Now I can't debug.
As I start debugging I get the following error:
The selected build of GDB does not support Python scripting.
It cannot be used in Qt Creator.
I found something that I need to install gdb-multiarch on Ubuntu. s this correct? and where I have to setup the GDB?
Who can give me some help?
Kurt

Pablo J. Rogina

@K-Str said in RPI installing cross-compiling:

I found something that I need to install gdb-multiarch on Ubuntu. s this correct? and where I have to setup the GDB?

could this issue be worth its own post? So not to mix topics? Thanks.

K-Str

Hello,
yes I opened a new topic
https://forum.qt.io/topic/99703/gdb-error-the-selected-build-of-gdb-does-not-support-python-scripting
Kurt