Cross Compile QT 5.11 for Raspberry pi 3

zhmh

My cross compiled QT version is old and I deiced to compile new one
I want to use this link
And this link says: The tested Configurations is Qt 5.10.1 with Raspbian stretch in the Raspberry 3 B model
Can I compile a newer QT like 5.11 without error?
And in one part of it,said:

Missing EGLFS Fix

On recent versions of Qt (e.g. 5.10.1), the qmake.conf file for linux-rasp-pi3-g++ doesn't work, however, linux-rasp-pi-g++ does. Create a new qmake.conf based on linux-rasp-pi-g++ with the build flags from the Pi 3 spec copied over.

I don't understand what is it mean and what should I do?

sierdzio

@zhmh said in Cross Compile QT for Raspberry pi 3:

linux-rasp-pi3-g++

They talk about mkspecs, you can see the definitions for them in <qtdir>/qtbase/mkspecs.

However, you don't have to use linux-rasp-pi-g++. You can pick the EGLFS native mkspecs instead: linux-rasp-pi3-vc4-g++.

zhmh

@sierdzio how can I pick the EGLFS native mkspecs and where should I use it?

sierdzio

Pass these flags to configure:

 -opengl es2 -device linux-rasp-pi3-vc4-g++

zhmh

@sierdzio I Run

./configure -release -opengl es2 -device linux-rasp-pi3-vc4-g++ -device-option CROSS_COMPILE=/root/raspi/tools/arm-bcm2708/gcc-linaro-arm-linux-gnueabihf-raspbian-x64/bin/arm-linux-gnueabihf- -sysroot /root/raspi/sysroot -opensource -confirm-license -make libs -prefix /usr/local/qt5pi -extprefix /root/raspi/qt5pi -hostprefix /root/raspi/qt5  -no-use-gold-linker -v

for QT 5.11 and the output is :

EGLFS ................ yes
      ...
      EGLFS Raspberry Pi ......... no

EGLFS is Missing?or it's fine?

sierdzio

Yes that's fine.

zhmh

also I Run:

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

for QT 5.11 and the output is :

EGLFS ................ yes
...
EGLFS Raspberry Pi ......... yes

and when make it, I get :

vc/include -I=/opt/vc/include/interface/vcos/pthreads -I=/opt/vc/include/interface/vmcs_host/linux -isystem /usr/include/libdrm -I/media/pi/BC1/qt-everywhere-src-5.11.0/qtbase/mkspecs/devices/linux-rasp-pi3-g++ -o .obj/qeglfskmsgbmwindow.o /media/pi/BC1/qt-everywhere-src-5.11.0/qtbase/src/plugins/platforms/eglfs/deviceintegration/eglfs_kms/qeglfskmsgbmwindow.cpp
/media/pi/BC1/qt-everywhere-src-5.11.0/qtbase/src/plugins/platforms/eglfs/deviceintegration/eglfs_kms/qeglfskmsgbmwindow.cpp: In member function ‘virtual void QEglFSKmsGbmWindow::resetSurface()’:
/media/pi/BC1/qt-everywhere-src-5.11.0/qtbase/src/plugins/platforms/eglfs/deviceintegration/eglfs_kms/qeglfskmsgbmwindow.cpp:58:5: error: ‘PFNEGLCREATEPLATFORMWINDOWSURFACEEXTPROC’ was not declared in this scope
     PFNEGLCREATEPLATFORMWINDOWSURFACEEXTPROC createPlatformWindowSurface = nullptr;
     ^
/media/pi/BC1/qt-everywhere-src-5.11.0/qtbase/src/plugins/platforms/eglfs/deviceintegration/eglfs_kms/qeglfskmsgbmwindow.cpp:61:9: error: ‘createPlatformWindowSurface’ was not declared in this scope
         createPlatformWindowSurface = reinterpret_cast<PFNEGLCREATEPLATFORMWINDOWSURFACEEXTPROC>(
         ^
/media/pi/BC1/qt-everywhere-src-5.11.0/qtbase/src/plugins/platforms/eglfs/deviceintegration/eglfs_kms/qeglfskmsgbmwindow.cpp:61:56: error: ‘PFNEGLCREATEPLATFORMWINDOWSURFACEEXTPROC’ does not name a type
         createPlatformWindowSurface = reinterpret_cast<PFNEGLCREATEPLATFORMWINDOWSURFACEEXTPROC>(
                                                        ^
/media/pi/BC1/qt-everywhere-src-5.11.0/qtbase/src/plugins/platforms/eglfs/deviceintegration/eglfs_kms/qeglfskmsgbmwindow.cpp:65:9: error: ‘createPlatformWindowSurface’ was not declared in this scope
     if (createPlatformWindowSurface) {
         ^
Makefile:2794: recipe for target '.obj/qeglfskmsgbmwindow.o' failed
make[7]: *** [.obj/qeglfskmsgbmwindow.o] Error 1
make[7]: Leaving directory '/media/pi/BC1/qt-everywhere-src-5.11.0/build/qtbase/src/plugins/platforms/eglfs/deviceintegration/eglfs_kms'
Makefile:72: recipe for target 'sub-eglfs_kms-make_first' failed
make[6]: *** [sub-eglfs_kms-make_first] Error 2
make[6]: Leaving directory '/media/pi/BC1/qt-everywhere-src-5.11.0/build/qtbase/src/plugins/platforms/eglfs/deviceintegration'
Makefile:104: recipe for target 'sub-deviceintegration-make_first-ordered' failed
make[5]: *** [sub-deviceintegration-make_first-ordered] Error 2
make[5]: Leaving directory '/media/pi/BC1/qt-everywhere-src-5.11.0/build/qtbase/src/plugins/platforms/eglfs'
Makefile:125: recipe for target 'sub-eglfs-make_first' failed
make[4]: *** [sub-eglfs-make_first] Error 2
make[4]: Leaving directory '/media/pi/BC1/qt-everywhere-src-5.11.0/build/qtbase/src/plugins/platforms'
Makefile:102: recipe for target 'sub-platforms-make_first' failed
make[3]: *** [sub-platforms-make_first] Error 2
make[3]: Leaving directory '/media/pi/BC1/qt-everywhere-src-5.11.0/build/qtbase/src/plugins'
Makefile:776: recipe for target 'sub-plugins-make_first' failed
make[2]: *** [sub-plugins-make_first] Error 2
make[2]: Leaving directory '/media/pi/BC1/qt-everywhere-src-5.11.0/build/qtbase/src'
Makefile:48: recipe for target 'sub-src-make_first' failed
make[1]: *** [sub-src-make_first] Error 2
make[1]: Leaving directory '/media/pi/BC1/qt-everywhere-src-5.11.0/build/qtbase'
Makefile:81: recipe for target 'module-qtbase-make_first' failed
make: *** [module-qtbase-make_first] Error 2

So I clear everything with:
git clean -dfx and
add -no-gbm to configure.

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

and make again ,it's work