Hi,

Do you have more information like the OS, Qt version, compilation log?

Thank you,

Johnny

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Qt5.9.1/5.9.1/gcc_64/qml/Box2D $ make
g++ -c -m64 -pipe -O2 -fvisibility=hidden -fvisibility-inlines-hidden -Wall -W -D_REENTRANT -fPIC -DQT_NO_DEBUG -DQT_PLUGIN -DQT_GUI_LIB -DQT_CORE_LIB -DQT_SHARED -I/usr/share/qt4/mkspecs/linux-g++-64 -I. -I/usr/include/qt4/QtCore -I/usr/include/qt4/QtGui -I/usr/include/qt4 -I. -IBox2D -I.moc -o .obj/box2dplugin.o box2dplugin.cpp
In file included from box2dplugin.cpp:28:0:
box2dplugin.h:29:31: fatal error: QQmlExtensionPlugin: No such file or directory
compilation terminated.
Makefile:1016: recipe for target '.obj/box2dplugin.o' failed
make: *** [.obj/box2dplugin.o] Error 1

from gcompris-qt.

I'm not sure why but it tries to compile with Qt4.8 instead of Qt5.
Can you share the CMakeCache.txt and the commands you typed (cmake ...) with the full log?

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This is the CMakeCache file.

For build in directory: /home/patrick/Desktop/GCompris-qt

It was generated by CMake: /usr/bin/cmake

You can edit this file to change values found and used by cmake.

If you do not want to change any of the values, simply exit the editor.

If you do want to change a value, simply edit, save, and exit the editor.

The syntax for the file is as follows:

KEY:TYPE=VALUE

KEY is the name of a variable in the cache.

TYPE is a hint to GUIs for the type of VALUE, DO NOT EDIT TYPE!.

VALUE is the current value for the KEY.

########################

EXTERNAL cache entries

########################

//No help, variable specified on the command line.
CMAKE_TOOLCHAIN_FILE:UNINITIALIZED=/usr/share/ECM/toolchain/Android.cmake

//No help, variable specified on the command line.
Qt5_DIR:UNINITIALIZED=

########################

INTERNAL cache entries

########################

//This is the directory where this CMakeCache.txt was created
CMAKE_CACHEFILE_DIR:INTERNAL=/home/patrick/Desktop/GCompris-qt
//Major version of cmake used to create the current loaded cache
CMAKE_CACHE_MAJOR_VERSION:INTERNAL=3
//Minor version of cmake used to create the current loaded cache
CMAKE_CACHE_MINOR_VERSION:INTERNAL=5
//Patch version of cmake used to create the current loaded cache
CMAKE_CACHE_PATCH_VERSION:INTERNAL=1
//Path to CMake executable.
CMAKE_COMMAND:INTERNAL=/usr/bin/cmake
//Path to cpack program executable.
CMAKE_CPACK_COMMAND:INTERNAL=/usr/bin/cpack
//Path to ctest program executable.
CMAKE_CTEST_COMMAND:INTERNAL=/usr/bin/ctest
//Path to CMake installation.
CMAKE_ROOT:INTERNAL=/usr/share/cmake-3.5

from gcompris-qt.

so yes, the error is that you don't compile with Qt5: Qt5_DIR:UNINITIALIZED=
Have you installed a Qt5 version? We have a page here to help install: http://gcompris.net/wiki/An_exercise_for_new_contributors

from gcompris-qt.

Hi, closing the issue as it seems to be a problem of Qt version

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