build Qt distcc Raspberry Pi 2 unrecognized command line option

pauledd

Hi there,

The mission: crosscompile Qt-5.10.1 on my Raspberry Pi 2 with
the help of my desktop running distcc server

Desktop: gentoo, arm64, gcc-7.3.1
Raspberry Pi 2, Ubuntu Mate gcc-7.3.1

Distcc server is running on desktop, test compile a code snippet on the Raspberry Pi with "distcc -o main.o -c main.c" succeeds with:

(dcc_job_summary) client: 192.168.1.54:37008 COMPILE_OK exit:0 sig:0 core:0 ret:0 time:29ms cc main.c

on the Desktop.

Now for the short test I dive into

cd /mnt/u/opt/qt-everywhere-src-5.10.1/qtsvg/

on the Raspberry and run:

../../Qt5.10/bin/qmake
make -j3 CXX="distcc" CC="distcc"

I get compile error on the Desktop server logs:

COMPILE_ERROR exit:1 sig:0 core:0 ret:0 time:2344ms cc qsvghandler.cpp

And this error in the /tmp logs on the raspberry:

gcc: Fehler: nicht erkanntes Kommandozeilenargument in Option »-mabi=aapcs-linux«
gcc: Anmerkung: gültige Argumente für »-mabi=« sind: ms sysv
gcc: Fehler: unbekannte Kommandozeilenoption »-marm«; meinten Sie »-mabm«?
gcc: Fehler: unbekannte Kommandozeilenoption »-mthumb-interwork«
gcc: Fehler: unbekannte Kommandozeilenoption »-mfpu=neon-vfpv4«
gcc: Fehler: unbekannte Kommandozeilenoption »-mfloat-abi=hard«

meaning something like "unknown commandline option.."..
Any ideas where this behaviour comes from, how to fix it?

sierdzio

Have you run configure in you Qt source root dir? You need your source configured, and qtbase built, before you can proceed with other Qt modules

pauledd

Yes, prior crosscompile I compiled Qt natively on the raspberry pi because all attemps to compile including qtwebengine failed...
So I decided to compile without qtwebengine and without crosscompile:

PKG_CONFIG_LIBDIR=/usr/lib/arm-linux-gnueabihf/pkgconfig:/usr/share/pkgconfig PKG_CONFIG_SYSROOT_DIR=/ ../qt-everywhere-src-5.10.1/configure -v -opengl es2 -eglfs -no-gtk -device linux-rasp-pi2-g++ -device-option CROSS_COMPILE=/usr/bin/ -opensource -confirm-license -release -reduce-exports -force-pkg-config -no-kms -nomake examples -no-compile-examples -no-pch -skip qtwayland -no-feature-geoservices_mapboxgl -qt-pcre -ssl -evdev -system-freetype -fontconfig -glib -skip qtwebengine -prefix /mnt/u/opt/Qt5.10/ && make -j4

That succeeded but now I really want to compile the rest (qtwebengine) via crosscompile... But even without crossc. it fails to compile it somewhere at step (~11100 of ~16000). Then my HDD is permanently blinking, seems to swap endlessly , cpu is at 5% and nothing goes on...

I simply dont want to wait for every attemp to compile qtwebengine one whole day until I reach 11100 of 16000 again... So I really want crosscompile that part.

sierdzio

Hm I don't think I can help, then. I always skip web engine when compiling for Raspberry.

Perhaps people who build Raspbian will be able to help? I remember that RPi has some special patches for chromium's engine (which is the same as in QtWebEngine IIRC), and they have built Qt for raspbian at some point...

pauledd

Well, I consider to remove/change the code in my qt app to not depend on qtwebengine... It just displays some wheather maps (images) from an online source. I think I can realize that by fetching those images somehow from that online source and display them on an QLabel or so. I think qtwebengine is quite an overkill for that :)