RaspberryPi2EGLFS tutorial fail at Step 10 "./configure"

[OutsourcedGuru]

I'm attempting to cross-compile on my MacBook (macOS Mojave 10.14.2) for a Raspberry Pi 3B with Raspbian Stretch Lite (actually, an OctoPi image of same).

At Step 10 in the tutorial, there's a fairly cryptic command at the configure step. Given that I've installed the host's raspi folder under a subfolder, I've modified the included code:

./configure -release -opengl es2 -device linux-rasp-pi3-g++ -device-option CROSS_COMPILE=/Users/me/project/raspi/tools/arm-bcm2708/gcc-linaro-arm-linux-gnueabihf-raspbian-x64/bin/arm-linux-gnueabihf- -sysroot /Users/me/project/raspi/sysroot -opensource -confirm-license -make libs -prefix /usr/local/qt5pi -extprefix /Users/me/project/raspi/qt5pi -hostprefix /Users/me/project/raspi/qt5 -v -no-use-gold-linker

• Per this section's recommendation, I appended "-no-use-gold-linker" since I'm targeting a version beyond 5.9.1.
• I'm targeting device linux-rasp-pi3-g++ since I'm using a Raspberry Pi 3B
• At the git clone step I pulled v5.10.1
• I've also tried the version for 32-bit (is that host-side or raspi-side, btw?) as seen here:

-device-option CROSS_COMPILE=/Users/me/project/raspi/tools/arm-bcm2708/gcc-linaro-arm-linux-gnueabihf-raspbian/bin/arm-linux-gnueabihf-

• I have done a git clean -dfx between attempts.

The error regardless is:

Project ERROR: Cannot run target compiler '/Users/me/project/raspi/tools/arm-bcm2708/gcc-linaro-arm-linux-gnueabihf-raspbian-x64/bin/arm-linux-gnueabihf-g++'. Output:
===================
sh: /Users/me/project/raspi/tools/arm-bcm2708/gcc-linaro-arm-linux-gnueabihf-raspbian-x64/bin/arm-linux-gnueabihf-g++: cannot execute binary file
===================
Maybe you forgot to setup the environment?

I'm afraid this is going to be a show-stopper for me if I can't get past this step.

[Pablo J. Rogina]

@OutsourcedGuru could you please run the compiler by itself to see what's going on...

/Users/me/project/raspi/tools/arm-bcm2708/gcc-linaro-arm-linux-gnueabihf-raspbian-x64/bin/arm-linux-gnueabihf-g++ --version

[OutsourcedGuru]

@Pablo-J.-Rogina said in RaspberryPi2EGLFS tutorial fail at Step 10 "./configure":

/Users/me/project/raspi/tools/arm-bcm2708/gcc-linaro-arm-linux-gnueabihf-raspbian-x64/bin/arm-linux-gnueabihf-g++

 -bash: /Users/me/project/raspi/tools/arm-bcm2708/gcc-linaro-arm-linux-gnueabihf-raspbian-x64/bin/arm-linux-gnueabihf-g++: cannot execute binary file

Altering for 32-bit version yields the same result.

/Users/me/project/raspi/tools/arm-bcm2708/gcc-linaro-arm-linux-gnueabihf-raspbian/bin/arm-linux-gnueabihf-g++

 -bash: /Users/me/project/raspi/tools/arm-bcm2708/gcc-linaro-arm-linux-gnueabihf-raspbian/bin/arm-linux-gnueabihf-g++: cannot execute binary file

uname -a

Darwin macbook-air.local 18.2.0 Darwin Kernel Version 18.2.0: Mon Nov 12 20:24:46 PST 2018; root:xnu-4903.231.4~2/RELEASE_X86_64 x86_64

[SGaist]

Hi,

Did you install the toolchain for Linux ?

Because from the looks of it, you are trying to run a Linux executable on your macOS machine which you can't.

[OutsourcedGuru]

@SGaist I followed the tutorial.

[SGaist]

What do you get if you call file /Users/me/project/raspi/tools/arm-bcm2708/gcc-linaro-arm-linux-gnueabihf-raspbian/bin/arm-linux-gnueabihf-g++ ?

[OutsourcedGuru]

@SGaist said in RaspberryPi2EGLFS tutorial fail at Step 10 "./configure":

file /Users/me/project/raspi/tools/arm-bcm2708/gcc-linaro-arm-linux-gnueabihf-raspbian/bin/arm-linux-gnueabihf-g++

ELF 32-bit LSB executable, Intel 80386, version 1 (SYSV), dynamically linked, interpreter /lib/ld-linux.so.2, for GNU/Linux 2.6.15, stripped

[PatZim]

I am also stuck at the exact same step.

I followed the Tutorial https://wiki.qt.io/RaspberryPi2EGLFS to be able to crosscompile for Raspbian Buster (on RPi3) using the Qt Creator on my local mac (10.13.6).

@OutsourcedGuru @SGaist I also dis the steps in the above mentioned tutorial just like @OutsourcedGuru summarized it. So far everything seemed to go fine, but I am also stuck at step 10 of the tutorial.

Also tried bother versions, the 32bit and 64bit. The output from the file command gives for the two binaries gives:

for the 64bit version:

./tools/arm-bcm2708/gcc-linaro-arm-linux-gnueabihf-raspbian-x64/bin/arm-linux-gnueabihf-g++: 
ELF 64-bit LSB executable, x86-64, version 1 (SYSV), dynamically linked, interpreter /lib64/ld-linux-x86-64.so.2, for GNU/Linux 2.6.24, BuildID[sha1]=b2f00203f8231a1bf4923f20c03fac5cf1d0a239, stripped

and for the 32big version:

./tools/arm-bcm2708/gcc-linaro-arm-linux-gnueabihf-raspbian/bin/arm-linux-gnueabihf-g++: 
ELF 32-bit LSB executable, Intel 80386, version 1 (SYSV), dynamically linked, interpreter /lib/ld-linux.so.2, for GNU/Linux 2.6.15, stripped

Any advice on how to proceed would be much appreciated. I am not really sure what to make out of this "environment error", because it's the first time I try to setup Qt to cross-compile for an RPi.

@OutsourcedGuru it is quite a while ago since your last post. Could you solve the problem somehow?

[Pablo J. Rogina]

@PatZim said in RaspberryPi2EGLFS tutorial fail at Step 10 "./configure":

but I am also stuck at step 10 of the tutorial

could you please show your exact error message?

[PatZim]

Hello @Pablo-J-Rogina , thanks for the reply.

That same as reported above by @OutsourcedGuru
When I run the ./configure command in step 10 of the tutorial

./configure -release -opengl es2 -device linux-rasp-pi3-g++ -device-option CROSS_COMPILE=~/raspi/tools/arm-bcm2708/gcc-linaro-arm-linux-gnueabihf-raspbian-x64/bin/arm-linux-gnueabihf- -sysroot ~/raspi/sysroot -opensource -confirm-license -make libs -prefix /usr/local/qt5pi -extprefix ~/raspi/qt5pi -hostprefix ~/raspi/qt5 -v -no-use-gold-linker

I get the same environment error:

Project ERROR: Cannot run target compiler '/Users/<username>/raspi/tools/arm-bcm2708/gcc-linaro-arm-linux-gnueabihf-raspbian-x64/bin/arm-linux-gnueabihf-g++'. Output:
===================
===================
Maybe you forgot to setup the environment?

Edit: I found another report here: https://stackoverflow.com/questions/49018581/issue-with-qt-and-cross-compiling-from-mac-to-raspbian-stretchrpi3/54502633

There is an answer saying:
The cross-compilation toolchain Raspberry Pi provides is probably built for Linux host systems.
You need to use a toolchain built for macOS hosts, such as this: https://github.com/Illuminux/ct-ng-linaro-mac

As that sounds like it would make sense, I tried to install the "crosstool-NG Linaro for Mac OS X" which it is referring to. But that unfortunately fails, as it's using an outdated brew package it seems (Error: homebrew/dupes was deprecated.) - Last commit was also 5 years ago.

So, I am now trying to find a more recent toolchain-howto for mac os to build for RPi.

[SGaist]

You really should consider using a virtual machine with Linux on it. It's going to be faster to setup.

[PatZim]

@SGaist

Thanks for the reply. I was in deed also considering to run a VM with a Linux.
If there is no other solution I guess I will try that.

However, I am wondering if there is no native solution for Macs. MacOS as well as Raspberries are quite common nowadays, therefor I would expect that there should be a way to get this to work somehow.

[Pablo J. Rogina]

@PatZim said in RaspberryPi2EGLFS tutorial fail at Step 10 "./configure":

I am wondering if there is no native solution for Macs

As you figured out yourself, I guess it all just comes down to get a cross-compiler for ARM that runs on Mac...

But I bet using the VM with Linux is a good approach, given that lots of guides/tutorials are based on such platform