Qt cross compile for Raspbian Jessie

vish

I was trying https://wiki.qt.io/RaspberryPi_Beginners_Guide with jessie and latest qt from repo...
Till the point Compiling other modules I was successful without any big problem. In module compilation I can compile imageformat. But than in svg module i am facing problem.

/home/gcc-4.7-linaro-rpi-gnueabihf/bin/arm-linux-gnueabihf-g++ -c -include .pch/Qt5Svg -pipe -marm -mfpu=vfp -mtune=arm1176jzf-s -march=armv6zk -mabi=aapcs-linux -mfloat-abi=hard --sysroot=/mnt/rasp-pi-rootfs -O2 -std=c++0x -fvisibility=hidden -fvisibility-inlines-hidden -fno-exceptions -Wall -W -D_REENTRANT -fPIC -DQT_NO_MTDEV -DQT_NO_LIBUDEV -DQT_NO_TSLIB -DQT_NO_LIBINPUT -DQT_NO_USING_NAMESPACE -DQT_BUILD_SVG_LIB -DQT_BUILDING_QT -DQT_NO_CAST_TO_ASCII -DQT_ASCII_CAST_WARNINGS -DQT_MOC_COMPAT -DQT_USE_QSTRINGBUILDER -DQT_DEPRECATED_WARNINGS -DQT_DISABLE_DEPRECATED_BEFORE=0x050000 -DQT_NO_EXCEPTIONS -D_LARGEFILE64_SOURCE -D_LARGEFILE_SOURCE -DQT_NO_DEBUG -DQT_GUI_LIB -DQT_CORE_LIB -I. -I../../include -I../../include/QtSvg -I../../include/QtSvg/5.6.0 -I../../include/QtSvg/5.6.0/QtSvg -I/mnt/rasp-pi-rootfs/usr/local/qt5pi/include/QtCore/5.6.0 -I/mnt/rasp-pi-rootfs/usr/local/qt5pi/include/QtCore/5.6.0/QtCore -I/mnt/rasp-pi-rootfs/usr/local/qt5pi/include/QtGui/5.6.0 -I/mnt/rasp-pi-rootfs/usr/local/qt5pi/include/QtGui/5.6.0/QtGui -I/mnt/rasp-pi-rootfs/usr/local/qt5pi/include -I/mnt/rasp-pi-rootfs/usr/local/qt5pi/include/QtGui -I/mnt/rasp-pi-rootfs/usr/local/qt5pi/include/QtCore -I.moc -I/mnt/rasp-pi-rootfs/opt/vc/include -I/mnt/rasp-pi-rootfs/opt/vc/include/interface/vcos/pthreads -I/mnt/rasp-pi-rootfs/opt/vc/include/interface/vmcs_host/linux -I/usr/local/qt5pi/mkspecs/devices/linux-rasp-pi-g++ -o .obj/moc_qsvgwidget.o .moc/moc_qsvgwidget.cpp
qgraphicssvgitem.h:53: Error: Undefined interface
Makefile:1174: recipe for target '.moc/moc_qgraphicssvgitem.cpp' failed
make[2]: *** [.moc/moc_qgraphicssvgitem.cpp] Error 1
make[2]: *** Waiting for unfinished jobs....
In file included from .moc/moc_qsvgwidget.cpp:9:0:
.moc/../qsvgwidget.h:41:31: fatal error: QtWidgets/qwidget.h: No such file or directoryIn file included from qsvgwidget.cpp:34:0:
qsvgwidget.h:41:31: fatal error: QtWidgets/qwidget.h: No such file or directory

compilation terminated.

This is my error text.

SGaist

Are you sure /mnt/rasp-pi-rootfs/usr/local/qt5pi/includeis accessible ?

vish

Also my question is from qt5.2 jsondb and jsbackend modules are removed. So do i need them separately or their support wll be provided in some othr module.

vish

@SGaist Ya it is accessible.. Hence i can compile and install imageformat module without any issue.

SGaist

jsondb and jsbackend ? Where did you had them ?

Can you locate qwidget.h in /mnt/rasp-pi-rootfs/usr/local/qt5pi/include ?

vish

No i dont have tht file in /include path..How come ?? Does ths mean my qtbase is not installed properly

SGaist

Looks like it, what option did you give to configure ?

vish

@SGaist ./configure -opengl es2 -device linux-rasp-pi-g++ -device-option CROSS_COMPILE=~/opt/gcc-4.7-linaro-rpi-gnueabihf/bin/arm-linux-gnueabihf- -sysroot /mnt/rasp-pi-rootfs -opensource -confirm-license -optimized-qmake -reduce-exports -release -make libs -prefix /usr/local/qt5pi -hostprefix /usr/local/qt5pi
same as mentioned in http://wiki.qt.io/Raspberrypi_beginners_guide

SGaist

That looks correct, do you have the configure summary ?

vish

@SGaist

Configure summary

Building on: linux-g++ (x86_64, CPU features: mmx sse sse2)
Building for: devices/linux-rasp-pi-g++ (arm, CPU features: none detected)
Platform notes:

        - Also available for Linux: linux-clang linux-kcc linux-icc linux-cxx

Build options:
Configuration .......... accessibility audio-backend c++11 clock-gettime clock-monotonic compile_examples concurrent cross_compile dbus egl eglfs eglfs_brcm enable_new_dtags evdev eventfd freetype full-config getaddrinfo getifaddrs harfbuzz iconv inotify ipv6ifname large-config largefile linuxfb medium-config minimal-config mremap nis opengl opengles2 pcre png posix_fallocate precompile_header qpa qpa reduce_exports release rpath shared small-config system-png system-zlib threadsafe-cloexec
Build parts ............ libs
Mode ................... release
Using sanitizer(s)...... none
Using C++ standard ..... c++11
Using gold linker....... no
Using new DTAGS ........ yes
Using PCH .............. yes
Target compiler supports:
Neon ................. no

Qt modules and options:
Qt D-Bus ............... yes (loading dbus-1 at runtime)
Qt Concurrent .......... yes
Qt GUI ................. yes
Qt Widgets ............. yes
Large File ............. yes
QML debugging .......... yes
Use system proxies ..... no

Support enabled for:
Accessibility .......... yes
ALSA ................... no
CUPS ................... no
Evdev .................. yes
FontConfig ............. no
FreeType ............... yes (bundled copy)
Glib ................... no
GStreamer .............. no
GTK theme .............. no
HarfBuzz ............... yes (bundled copy)
Iconv .................. yes
ICU .................... no
Image formats:
GIF .................. yes (plugin, using bundled copy)
JPEG ................. yes (plugin, using bundled copy)
PNG .................. yes (in QtGui, using system library)
libinput................ no
Logging backends:
journald ............... no
syslog ............... no
mtdev .................. no
Networking:
getaddrinfo .......... yes
getifaddrs ........... yes
IPv6 ifname .......... yes
libproxy.............. no
OpenSSL .............. no
NIS .................... yes
OpenGL / OpenVG:
EGL .................. yes
OpenGL ............... yes (OpenGL ES 2.0+)
OpenVG ............... no
PCRE ................... yes (bundled copy)
pkg-config ............. yes
PulseAudio ............. no
QPA backends:
DirectFB ............. no
EGLFS ................ yes
EGLFS i.MX6....... . no
EGLFS KMS .......... no
EGLFS Mali ......... no
EGLFS Raspberry Pi . yes
EGLFS X11 .......... no
LinuxFB .............. yes
Mir client............ no
XCB .................. no
Session management ..... yes
SQL drivers:
DB2 .................. no
InterBase ............ no
MySQL ................ no
OCI .................. no
ODBC ................. no
PostgreSQL ........... no
SQLite 2 ............. no
SQLite ............... yes (plugin, using bundled copy)
TDS .................. no
tslib .................. no
udev ................... no
xkbcommon-x11........... no
xkbcommon-evdev......... no
zlib ................... yes (system library)

NOTE: Qt is using double for qreal on this system. This is binary incompatible against Qt 5.1.
Configure with '-qreal float' to create a build that is binary compatible with 5.1.

SGaist

Looks good…

Might be a glitch when you ran make install

vish

@SGaist I tries some stuff but not able to fix it. Can u guide me how to fix this and wht could be reason for this ??

SGaist

Well, basically and if I understood you correctly, you are able to cross-compile without any problem, correct ? When calling make install did you have the root file system of the Pi mounted correctly ?

vish

@SGaist I checked install log properly it should make QtWidget, QtPlateformHeaders, QtPlateformSupport, QtTest, QtOpenGL, QtPrintSupport, QtConcurrent, QtCore, QtDBus, QtGui, QtNetwork , QtPositioning, QtScript, QtSensors, QtSql , QtXml , QtXmlPatterns folders. But after finishing installation i m getting only QtConcurrent, QtCore, QtDBus, QtGui, QtNetwork , QtPositioning, QtScript, QtSensors, QtSql , QtXml , QtXmlPatterns folders in my install and similar in lib directory. So it cant install QtWidget, QtPlateformHeaders, QtPlateformSupport, QtTest, QtOpenGL, QtPrintSupport modules. I did nt find anything unusual in log.

SGaist

Did you build only qtbase or all of Qt ?

vish

well according to https://wiki.qt.io/RaspberryPi_Beginners_Guide i have to build and install qtbase and than other modules. So I could not finish this step and I am blocked.

SGaist

That's correct. Do you have libQtWidget.so somewhere in your build folder ?

vish

@SGaist Nope...

SGaist

That one's really puzzling…

What happens if you call make -C src/widgets in your builder ?

vish

Hi @SGaist ,
I dont know what exactly was the problem. But I re cloned repo and than tried all steps and it works as expected. Could be a problem of broken download. But it neither gave me any unexpected error message not it failed. :P
But now i m happy tht i wll have kernel 4.1 with qt in my pi.. thanks for your time and support man.