Installing qtquicktimeline, Errors with make command

[Doppk]

Hi! I'm developing an application on a Grayhill 3D70 display using Qt creator 4.9.1 based on Qt 5.12.3 on Ubuntu 16.04 run on a VM using Virtual box.
The installation does not have timeline installed considering the below picture:

I followed this guide to install it. Ran the following command inside the folder "qtquicktimeline":

~/Qt/5.12.2/gcc_64/bin/qmake -r

No errors.

Then:

make

Exits with errors at the end:

ghguest@ghguest-VirtualBox:~/qtquicktimeline$ make
cd src/ && ( test -e Makefile || /home/ghguest/Qt/5.12.2/gcc_64/bin/qmake -o Makefile /home/ghguest/qtquicktimeline/src/src.pro ) && make -f Makefile 
make[1]: Entering directory '/home/ghguest/qtquicktimeline/src'
cd imports/ && ( test -e Makefile || /home/ghguest/Qt/5.12.2/gcc_64/bin/qmake -o Makefile /home/ghguest/qtquicktimeline/src/imports/imports.pro ) && make -f Makefile 
make[2]: Entering directory '/home/ghguest/qtquicktimeline/src/imports'
cd timeline/ && ( test -e Makefile || /home/ghguest/Qt/5.12.2/gcc_64/bin/qmake -o Makefile /home/ghguest/qtquicktimeline/src/imports/timeline/timeline.pro ) && make -f Makefile 
make[3]: Entering directory '/home/ghguest/qtquicktimeline/src/imports/timeline'
/home/ghguest/Qt/5.12.2/gcc_64/bin/qmake -install qinstall qmldir ../../../qml/QtQuick/Timeline/qmldir
/home/ghguest/Qt/5.12.2/gcc_64/bin/qmake -install qinstall plugins.qmltypes ../../../qml/QtQuick/Timeline/plugins.qmltypes
g++ -c -pipe -O2 -g -std=c++1y -fvisibility=hidden -fvisibility-inlines-hidden -fno-exceptions -Wall -W -Wvla -Wdate-time -D_REENTRANT -fPIC -DQT_NO_FOREACH -DQT_NO_CAST_TO_ASCII -DQT_NO_CAST_FROM_ASCII -DQT_NO_NARROWING_CONVERSIONS_IN_CONNECT -DQT_NO_EXCEPTIONS -D_LARGEFILE64_SOURCE -D_LARGEFILE_SOURCE -DQT_NO_DEBUG -DQT_PLUGIN -DQT_QUICK_LIB -DQT_GUI_LIB -DQT_QML_LIB -DQT_NETWORK_LIB -DQT_CORE_LIB -DQT_QUICK_LIB -DQT_GUI_LIB -DQT_QML_LIB -DQT_NETWORK_LIB -DQT_CORE_LIB -I. -I/home/ghguest/Qt/5.12.2/gcc_64/include -I/home/ghguest/Qt/5.12.2/gcc_64/include/QtQuick -I/home/ghguest/Qt/5.12.2/gcc_64/include/QtGui -I/home/ghguest/Qt/5.12.2/gcc_64/include/QtQml -I/home/ghguest/Qt/5.12.2/gcc_64/include/QtNetwork -I/home/ghguest/Qt/5.12.2/gcc_64/include/QtCore/5.12.2 -I/home/ghguest/Qt/5.12.2/gcc_64/include/QtCore/5.12.2/QtCore -I/home/ghguest/Qt/5.12.2/gcc_64/include/QtCore -I/home/ghguest/Qt/5.12.2/gcc_64/include/QtQuick/5.12.2 -I/home/ghguest/Qt/5.12.2/gcc_64/include/QtQuick/5.12.2/QtQuick -I/home/ghguest/Qt/5.12.2/gcc_64/include/QtGui/5.12.2 -I/home/ghguest/Qt/5.12.2/gcc_64/include/QtGui/5.12.2/QtGui -I/home/ghguest/Qt/5.12.2/gcc_64/include/QtQml/5.12.2 -I/home/ghguest/Qt/5.12.2/gcc_64/include/QtQml/5.12.2/QtQml -I.moc -isystem /usr/include/libdrm -I/home/ghguest/Qt/5.12.2/gcc_64/mkspecs/linux-g++ -o .obj/qquickkeyframe.o qquickkeyframe.cpp
g++ -c -pipe -O2 -g -std=c++1y -fvisibility=hidden -fvisibility-inlines-hidden -fno-exceptions -Wall -W -Wvla -Wdate-time -D_REENTRANT -fPIC -DQT_NO_FOREACH -DQT_NO_CAST_TO_ASCII -DQT_NO_CAST_FROM_ASCII -DQT_NO_NARROWING_CONVERSIONS_IN_CONNECT -DQT_NO_EXCEPTIONS -D_LARGEFILE64_SOURCE -D_LARGEFILE_SOURCE -DQT_NO_DEBUG -DQT_PLUGIN -DQT_QUICK_LIB -DQT_GUI_LIB -DQT_QML_LIB -DQT_NETWORK_LIB -DQT_CORE_LIB -DQT_QUICK_LIB -DQT_GUI_LIB -DQT_QML_LIB -DQT_NETWORK_LIB -DQT_CORE_LIB -I. -I/home/ghguest/Qt/5.12.2/gcc_64/include -I/home/ghguest/Qt/5.12.2/gcc_64/include/QtQuick -I/home/ghguest/Qt/5.12.2/gcc_64/include/QtGui -I/home/ghguest/Qt/5.12.2/gcc_64/include/QtQml -I/home/ghguest/Qt/5.12.2/gcc_64/include/QtNetwork -I/home/ghguest/Qt/5.12.2/gcc_64/include/QtCore/5.12.2 -I/home/ghguest/Qt/5.12.2/gcc_64/include/QtCore/5.12.2/QtCore -I/home/ghguest/Qt/5.12.2/gcc_64/include/QtCore -I/home/ghguest/Qt/5.12.2/gcc_64/include/QtQuick/5.12.2 -I/home/ghguest/Qt/5.12.2/gcc_64/include/QtQuick/5.12.2/QtQuick -I/home/ghguest/Qt/5.12.2/gcc_64/include/QtGui/5.12.2 -I/home/ghguest/Qt/5.12.2/gcc_64/include/QtGui/5.12.2/QtGui -I/home/ghguest/Qt/5.12.2/gcc_64/include/QtQml/5.12.2 -I/home/ghguest/Qt/5.12.2/gcc_64/include/QtQml/5.12.2/QtQml -I.moc -isystem /usr/include/libdrm -I/home/ghguest/Qt/5.12.2/gcc_64/mkspecs/linux-g++ -o .obj/qquicktimeline.o qquicktimeline.cpp
g++ -c -pipe -O2 -g -std=c++1y -fvisibility=hidden -fvisibility-inlines-hidden -fno-exceptions -Wall -W -Wvla -Wdate-time -D_REENTRANT -fPIC -DQT_NO_FOREACH -DQT_NO_CAST_TO_ASCII -DQT_NO_CAST_FROM_ASCII -DQT_NO_NARROWING_CONVERSIONS_IN_CONNECT -DQT_NO_EXCEPTIONS -D_LARGEFILE64_SOURCE -D_LARGEFILE_SOURCE -DQT_NO_DEBUG -DQT_PLUGIN -DQT_QUICK_LIB -DQT_GUI_LIB -DQT_QML_LIB -DQT_NETWORK_LIB -DQT_CORE_LIB -DQT_QUICK_LIB -DQT_GUI_LIB -DQT_QML_LIB -DQT_NETWORK_LIB -DQT_CORE_LIB -I. -I/home/ghguest/Qt/5.12.2/gcc_64/include -I/home/ghguest/Qt/5.12.2/gcc_64/include/QtQuick -I/home/ghguest/Qt/5.12.2/gcc_64/include/QtGui -I/home/ghguest/Qt/5.12.2/gcc_64/include/QtQml -I/home/ghguest/Qt/5.12.2/gcc_64/include/QtNetwork -I/home/ghguest/Qt/5.12.2/gcc_64/include/QtCore/5.12.2 -I/home/ghguest/Qt/5.12.2/gcc_64/include/QtCore/5.12.2/QtCore -I/home/ghguest/Qt/5.12.2/gcc_64/include/QtCore -I/home/ghguest/Qt/5.12.2/gcc_64/include/QtQuick/5.12.2 -I/home/ghguest/Qt/5.12.2/gcc_64/include/QtQuick/5.12.2/QtQuick -I/home/ghguest/Qt/5.12.2/gcc_64/include/QtGui/5.12.2 -I/home/ghguest/Qt/5.12.2/gcc_64/include/QtGui/5.12.2/QtGui -I/home/ghguest/Qt/5.12.2/gcc_64/include/QtQml/5.12.2 -I/home/ghguest/Qt/5.12.2/gcc_64/include/QtQml/5.12.2/QtQml -I.moc -isystem /usr/include/libdrm -I/home/ghguest/Qt/5.12.2/gcc_64/mkspecs/linux-g++ -o .obj/qquicktimelineanimation.o qquicktimelineanimation.cpp
g++ -pipe -O2 -g -std=c++1y -fvisibility=hidden -fvisibility-inlines-hidden -fno-exceptions -Wall -W -Wvla -Wdate-time -dM -E -o .moc/moc_predefs.h /home/ghguest/Qt/5.12.2/gcc_64/mkspecs/features/data/dummy.cpp
/home/ghguest/Qt/5.12.2/gcc_64/bin/moc -DQT_NO_FOREACH -DQT_NO_CAST_TO_ASCII -DQT_NO_CAST_FROM_ASCII -DQT_NO_NARROWING_CONVERSIONS_IN_CONNECT -DQT_NO_EXCEPTIONS -D_LARGEFILE64_SOURCE -D_LARGEFILE_SOURCE -DQT_NO_DEBUG -DQT_PLUGIN -DQT_QUICK_LIB -DQT_GUI_LIB -DQT_QML_LIB -DQT_NETWORK_LIB -DQT_CORE_LIB -DQT_QUICK_LIB -DQT_GUI_LIB -DQT_QML_LIB -DQT_NETWORK_LIB -DQT_CORE_LIB --include /home/ghguest/qtquicktimeline/src/imports/timeline/.moc/moc_predefs.h -I/home/ghguest/Qt/5.12.2/gcc_64/mkspecs/linux-g++ -I/home/ghguest/qtquicktimeline/src/imports/timeline -I/home/ghguest/Qt/5.12.2/gcc_64/include -I/home/ghguest/Qt/5.12.2/gcc_64/include/QtQuick -I/home/ghguest/Qt/5.12.2/gcc_64/include/QtGui -I/home/ghguest/Qt/5.12.2/gcc_64/include/QtQml -I/home/ghguest/Qt/5.12.2/gcc_64/include/QtNetwork -I/home/ghguest/Qt/5.12.2/gcc_64/include/QtCore/5.12.2 -I/home/ghguest/Qt/5.12.2/gcc_64/include/QtCore/5.12.2/QtCore -I/home/ghguest/Qt/5.12.2/gcc_64/include/QtCore -I/home/ghguest/Qt/5.12.2/gcc_64/include/QtQuick/5.12.2 -I/home/ghguest/Qt/5.12.2/gcc_64/include/QtQuick/5.12.2/QtQuick -I/home/ghguest/Qt/5.12.2/gcc_64/include/QtGui/5.12.2 -I/home/ghguest/Qt/5.12.2/gcc_64/include/QtGui/5.12.2/QtGui -I/home/ghguest/Qt/5.12.2/gcc_64/include/QtQml/5.12.2 -I/home/ghguest/Qt/5.12.2/gcc_64/include/QtQml/5.12.2/QtQml -I/usr/include/c++/5 -I/usr/include/x86_64-linux-gnu/c++/5 -I/usr/include/c++/5/backward -I/usr/lib/gcc/x86_64-linux-gnu/5/include -I/usr/local/include -I/usr/lib/gcc/x86_64-linux-gnu/5/include-fixed -I/usr/include/x86_64-linux-gnu -I/usr/include -Muri=QtQuick.Timeline qtquicktimelineplugin.cpp -o .moc/qtquicktimelineplugin.moc
g++ -c -pipe -O2 -g -std=c++1y -fvisibility=hidden -fvisibility-inlines-hidden -fno-exceptions -Wall -W -Wvla -Wdate-time -D_REENTRANT -fPIC -DQT_NO_FOREACH -DQT_NO_CAST_TO_ASCII -DQT_NO_CAST_FROM_ASCII -DQT_NO_NARROWING_CONVERSIONS_IN_CONNECT -DQT_NO_EXCEPTIONS -D_LARGEFILE64_SOURCE -D_LARGEFILE_SOURCE -DQT_NO_DEBUG -DQT_PLUGIN -DQT_QUICK_LIB -DQT_GUI_LIB -DQT_QML_LIB -DQT_NETWORK_LIB -DQT_CORE_LIB -DQT_QUICK_LIB -DQT_GUI_LIB -DQT_QML_LIB -DQT_NETWORK_LIB -DQT_CORE_LIB -I. -I/home/ghguest/Qt/5.12.2/gcc_64/include -I/home/ghguest/Qt/5.12.2/gcc_64/include/QtQuick -I/home/ghguest/Qt/5.12.2/gcc_64/include/QtGui -I/home/ghguest/Qt/5.12.2/gcc_64/include/QtQml -I/home/ghguest/Qt/5.12.2/gcc_64/include/QtNetwork -I/home/ghguest/Qt/5.12.2/gcc_64/include/QtCore/5.12.2 -I/home/ghguest/Qt/5.12.2/gcc_64/include/QtCore/5.12.2/QtCore -I/home/ghguest/Qt/5.12.2/gcc_64/include/QtCore -I/home/ghguest/Qt/5.12.2/gcc_64/include/QtQuick/5.12.2 -I/home/ghguest/Qt/5.12.2/gcc_64/include/QtQuick/5.12.2/QtQuick -I/home/ghguest/Qt/5.12.2/gcc_64/include/QtGui/5.12.2 -I/home/ghguest/Qt/5.12.2/gcc_64/include/QtGui/5.12.2/QtGui -I/home/ghguest/Qt/5.12.2/gcc_64/include/QtQml/5.12.2 -I/home/ghguest/Qt/5.12.2/gcc_64/include/QtQml/5.12.2/QtQml -I.moc -isystem /usr/include/libdrm -I/home/ghguest/Qt/5.12.2/gcc_64/mkspecs/linux-g++ -o .obj/qtquicktimelineplugin.o qtquicktimelineplugin.cpp
/home/ghguest/Qt/5.12.2/gcc_64/bin/moc -DQT_NO_FOREACH -DQT_NO_CAST_TO_ASCII -DQT_NO_CAST_FROM_ASCII -DQT_NO_NARROWING_CONVERSIONS_IN_CONNECT -DQT_NO_EXCEPTIONS -D_LARGEFILE64_SOURCE -D_LARGEFILE_SOURCE -DQT_NO_DEBUG -DQT_PLUGIN -DQT_QUICK_LIB -DQT_GUI_LIB -DQT_QML_LIB -DQT_NETWORK_LIB -DQT_CORE_LIB -DQT_QUICK_LIB -DQT_GUI_LIB -DQT_QML_LIB -DQT_NETWORK_LIB -DQT_CORE_LIB --include /home/ghguest/qtquicktimeline/src/imports/timeline/.moc/moc_predefs.h -I/home/ghguest/Qt/5.12.2/gcc_64/mkspecs/linux-g++ -I/home/ghguest/qtquicktimeline/src/imports/timeline -I/home/ghguest/Qt/5.12.2/gcc_64/include -I/home/ghguest/Qt/5.12.2/gcc_64/include/QtQuick -I/home/ghguest/Qt/5.12.2/gcc_64/include/QtGui -I/home/ghguest/Qt/5.12.2/gcc_64/include/QtQml -I/home/ghguest/Qt/5.12.2/gcc_64/include/QtNetwork -I/home/ghguest/Qt/5.12.2/gcc_64/include/QtCore/5.12.2 -I/home/ghguest/Qt/5.12.2/gcc_64/include/QtCore/5.12.2/QtCore -I/home/ghguest/Qt/5.12.2/gcc_64/include/QtCore -I/home/ghguest/Qt/5.12.2/gcc_64/include/QtQuick/5.12.2 -I/home/ghguest/Qt/5.12.2/gcc_64/include/QtQuick/5.12.2/QtQuick -I/home/ghguest/Qt/5.12.2/gcc_64/include/QtGui/5.12.2 -I/home/ghguest/Qt/5.12.2/gcc_64/include/QtGui/5.12.2/QtGui -I/home/ghguest/Qt/5.12.2/gcc_64/include/QtQml/5.12.2 -I/home/ghguest/Qt/5.12.2/gcc_64/include/QtQml/5.12.2/QtQml -I/usr/include/c++/5 -I/usr/include/x86_64-linux-gnu/c++/5 -I/usr/include/c++/5/backward -I/usr/lib/gcc/x86_64-linux-gnu/5/include -I/usr/local/include -I/usr/lib/gcc/x86_64-linux-gnu/5/include-fixed -I/usr/include/x86_64-linux-gnu -I/usr/include -Muri=QtQuick.Timeline qquickkeyframe_p.h -o .moc/moc_qquickkeyframe_p.cpp
g++ -c -pipe -O2 -g -std=c++1y -fvisibility=hidden -fvisibility-inlines-hidden -fno-exceptions -Wall -W -Wvla -Wdate-time -D_REENTRANT -fPIC -DQT_NO_FOREACH -DQT_NO_CAST_TO_ASCII -DQT_NO_CAST_FROM_ASCII -DQT_NO_NARROWING_CONVERSIONS_IN_CONNECT -DQT_NO_EXCEPTIONS -D_LARGEFILE64_SOURCE -D_LARGEFILE_SOURCE -DQT_NO_DEBUG -DQT_PLUGIN -DQT_QUICK_LIB -DQT_GUI_LIB -DQT_QML_LIB -DQT_NETWORK_LIB -DQT_CORE_LIB -DQT_QUICK_LIB -DQT_GUI_LIB -DQT_QML_LIB -DQT_NETWORK_LIB -DQT_CORE_LIB -I. -I/home/ghguest/Qt/5.12.2/gcc_64/include -I/home/ghguest/Qt/5.12.2/gcc_64/include/QtQuick -I/home/ghguest/Qt/5.12.2/gcc_64/include/QtGui -I/home/ghguest/Qt/5.12.2/gcc_64/include/QtQml -I/home/ghguest/Qt/5.12.2/gcc_64/include/QtNetwork -I/home/ghguest/Qt/5.12.2/gcc_64/include/QtCore/5.12.2 -I/home/ghguest/Qt/5.12.2/gcc_64/include/QtCore/5.12.2/QtCore -I/home/ghguest/Qt/5.12.2/gcc_64/include/QtCore -I/home/ghguest/Qt/5.12.2/gcc_64/include/QtQuick/5.12.2 -I/home/ghguest/Qt/5.12.2/gcc_64/include/QtQuick/5.12.2/QtQuick -I/home/ghguest/Qt/5.12.2/gcc_64/include/QtGui/5.12.2 -I/home/ghguest/Qt/5.12.2/gcc_64/include/QtGui/5.12.2/QtGui -I/home/ghguest/Qt/5.12.2/gcc_64/include/QtQml/5.12.2 -I/home/ghguest/Qt/5.12.2/gcc_64/include/QtQml/5.12.2/QtQml -I.moc -isystem /usr/include/libdrm -I/home/ghguest/Qt/5.12.2/gcc_64/mkspecs/linux-g++ -o .obj/moc_qquickkeyframe_p.o .moc/moc_qquickkeyframe_p.cpp
/home/ghguest/Qt/5.12.2/gcc_64/bin/moc -DQT_NO_FOREACH -DQT_NO_CAST_TO_ASCII -DQT_NO_CAST_FROM_ASCII -DQT_NO_NARROWING_CONVERSIONS_IN_CONNECT -DQT_NO_EXCEPTIONS -D_LARGEFILE64_SOURCE -D_LARGEFILE_SOURCE -DQT_NO_DEBUG -DQT_PLUGIN -DQT_QUICK_LIB -DQT_GUI_LIB -DQT_QML_LIB -DQT_NETWORK_LIB -DQT_CORE_LIB -DQT_QUICK_LIB -DQT_GUI_LIB -DQT_QML_LIB -DQT_NETWORK_LIB -DQT_CORE_LIB --include /home/ghguest/qtquicktimeline/src/imports/timeline/.moc/moc_predefs.h -I/home/ghguest/Qt/5.12.2/gcc_64/mkspecs/linux-g++ -I/home/ghguest/qtquicktimeline/src/imports/timeline -I/home/ghguest/Qt/5.12.2/gcc_64/include -I/home/ghguest/Qt/5.12.2/gcc_64/include/QtQuick -I/home/ghguest/Qt/5.12.2/gcc_64/include/QtGui -I/home/ghguest/Qt/5.12.2/gcc_64/include/QtQml -I/home/ghguest/Qt/5.12.2/gcc_64/include/QtNetwork -I/home/ghguest/Qt/5.12.2/gcc_64/include/QtCore/5.12.2 -I/home/ghguest/Qt/5.12.2/gcc_64/include/QtCore/5.12.2/QtCore -I/home/ghguest/Qt/5.12.2/gcc_64/include/QtCore -I/home/ghguest/Qt/5.12.2/gcc_64/include/QtQuick/5.12.2 -I/home/ghguest/Qt/5.12.2/gcc_64/include/QtQuick/5.12.2/QtQuick -I/home/ghguest/Qt/5.12.2/gcc_64/include/QtGui/5.12.2 -I/home/ghguest/Qt/5.12.2/gcc_64/include/QtGui/5.12.2/QtGui -I/home/ghguest/Qt/5.12.2/gcc_64/include/QtQml/5.12.2 -I/home/ghguest/Qt/5.12.2/gcc_64/include/QtQml/5.12.2/QtQml -I/usr/include/c++/5 -I/usr/include/x86_64-linux-gnu/c++/5 -I/usr/include/c++/5/backward -I/usr/lib/gcc/x86_64-linux-gnu/5/include -I/usr/local/include -I/usr/lib/gcc/x86_64-linux-gnu/5/include-fixed -I/usr/include/x86_64-linux-gnu -I/usr/include -Muri=QtQuick.Timeline qquicktimeline_p.h -o .moc/moc_qquicktimeline_p.cpp
g++ -c -pipe -O2 -g -std=c++1y -fvisibility=hidden -fvisibility-inlines-hidden -fno-exceptions -Wall -W -Wvla -Wdate-time -D_REENTRANT -fPIC -DQT_NO_FOREACH -DQT_NO_CAST_TO_ASCII -DQT_NO_CAST_FROM_ASCII -DQT_NO_NARROWING_CONVERSIONS_IN_CONNECT -DQT_NO_EXCEPTIONS -D_LARGEFILE64_SOURCE -D_LARGEFILE_SOURCE -DQT_NO_DEBUG -DQT_PLUGIN -DQT_QUICK_LIB -DQT_GUI_LIB -DQT_QML_LIB -DQT_NETWORK_LIB -DQT_CORE_LIB -DQT_QUICK_LIB -DQT_GUI_LIB -DQT_QML_LIB -DQT_NETWORK_LIB -DQT_CORE_LIB -I. -I/home/ghguest/Qt/5.12.2/gcc_64/include -I/home/ghguest/Qt/5.12.2/gcc_64/include/QtQuick -I/home/ghguest/Qt/5.12.2/gcc_64/include/QtGui -I/home/ghguest/Qt/5.12.2/gcc_64/include/QtQml -I/home/ghguest/Qt/5.12.2/gcc_64/include/QtNetwork -I/home/ghguest/Qt/5.12.2/gcc_64/include/QtCore/5.12.2 -I/home/ghguest/Qt/5.12.2/gcc_64/include/QtCore/5.12.2/QtCore -I/home/ghguest/Qt/5.12.2/gcc_64/include/QtCore -I/home/ghguest/Qt/5.12.2/gcc_64/include/QtQuick/5.12.2 -I/home/ghguest/Qt/5.12.2/gcc_64/include/QtQuick/5.12.2/QtQuick -I/home/ghguest/Qt/5.12.2/gcc_64/include/QtGui/5.12.2 -I/home/ghguest/Qt/5.12.2/gcc_64/include/QtGui/5.12.2/QtGui -I/home/ghguest/Qt/5.12.2/gcc_64/include/QtQml/5.12.2 -I/home/ghguest/Qt/5.12.2/gcc_64/include/QtQml/5.12.2/QtQml -I.moc -isystem /usr/include/libdrm -I/home/ghguest/Qt/5.12.2/gcc_64/mkspecs/linux-g++ -o .obj/moc_qquicktimeline_p.o .moc/moc_qquicktimeline_p.cpp
/home/ghguest/Qt/5.12.2/gcc_64/bin/moc -DQT_NO_FOREACH -DQT_NO_CAST_TO_ASCII -DQT_NO_CAST_FROM_ASCII -DQT_NO_NARROWING_CONVERSIONS_IN_CONNECT -DQT_NO_EXCEPTIONS -D_LARGEFILE64_SOURCE -D_LARGEFILE_SOURCE -DQT_NO_DEBUG -DQT_PLUGIN -DQT_QUICK_LIB -DQT_GUI_LIB -DQT_QML_LIB -DQT_NETWORK_LIB -DQT_CORE_LIB -DQT_QUICK_LIB -DQT_GUI_LIB -DQT_QML_LIB -DQT_NETWORK_LIB -DQT_CORE_LIB --include /home/ghguest/qtquicktimeline/src/imports/timeline/.moc/moc_predefs.h -I/home/ghguest/Qt/5.12.2/gcc_64/mkspecs/linux-g++ -I/home/ghguest/qtquicktimeline/src/imports/timeline -I/home/ghguest/Qt/5.12.2/gcc_64/include -I/home/ghguest/Qt/5.12.2/gcc_64/include/QtQuick -I/home/ghguest/Qt/5.12.2/gcc_64/include/QtGui -I/home/ghguest/Qt/5.12.2/gcc_64/include/QtQml -I/home/ghguest/Qt/5.12.2/gcc_64/include/QtNetwork -I/home/ghguest/Qt/5.12.2/gcc_64/include/QtCore/5.12.2 -I/home/ghguest/Qt/5.12.2/gcc_64/include/QtCore/5.12.2/QtCore -I/home/ghguest/Qt/5.12.2/gcc_64/include/QtCore -I/home/ghguest/Qt/5.12.2/gcc_64/include/QtQuick/5.12.2 -I/home/ghguest/Qt/5.12.2/gcc_64/include/QtQuick/5.12.2/QtQuick -I/home/ghguest/Qt/5.12.2/gcc_64/include/QtGui/5.12.2 -I/home/ghguest/Qt/5.12.2/gcc_64/include/QtGui/5.12.2/QtGui -I/home/ghguest/Qt/5.12.2/gcc_64/include/QtQml/5.12.2 -I/home/ghguest/Qt/5.12.2/gcc_64/include/QtQml/5.12.2/QtQml -I/usr/include/c++/5 -I/usr/include/x86_64-linux-gnu/c++/5 -I/usr/include/c++/5/backward -I/usr/lib/gcc/x86_64-linux-gnu/5/include -I/usr/local/include -I/usr/lib/gcc/x86_64-linux-gnu/5/include-fixed -I/usr/include/x86_64-linux-gnu -I/usr/include -Muri=QtQuick.Timeline qquicktimelineanimation_p.h -o .moc/moc_qquicktimelineanimation_p.cpp
g++ -c -pipe -O2 -g -std=c++1y -fvisibility=hidden -fvisibility-inlines-hidden -fno-exceptions -Wall -W -Wvla -Wdate-time -D_REENTRANT -fPIC -DQT_NO_FOREACH -DQT_NO_CAST_TO_ASCII -DQT_NO_CAST_FROM_ASCII -DQT_NO_NARROWING_CONVERSIONS_IN_CONNECT -DQT_NO_EXCEPTIONS -D_LARGEFILE64_SOURCE -D_LARGEFILE_SOURCE -DQT_NO_DEBUG -DQT_PLUGIN -DQT_QUICK_LIB -DQT_GUI_LIB -DQT_QML_LIB -DQT_NETWORK_LIB -DQT_CORE_LIB -DQT_QUICK_LIB -DQT_GUI_LIB -DQT_QML_LIB -DQT_NETWORK_LIB -DQT_CORE_LIB -I. -I/home/ghguest/Qt/5.12.2/gcc_64/include -I/home/ghguest/Qt/5.12.2/gcc_64/include/QtQuick -I/home/ghguest/Qt/5.12.2/gcc_64/include/QtGui -I/home/ghguest/Qt/5.12.2/gcc_64/include/QtQml -I/home/ghguest/Qt/5.12.2/gcc_64/include/QtNetwork -I/home/ghguest/Qt/5.12.2/gcc_64/include/QtCore/5.12.2 -I/home/ghguest/Qt/5.12.2/gcc_64/include/QtCore/5.12.2/QtCore -I/home/ghguest/Qt/5.12.2/gcc_64/include/QtCore -I/home/ghguest/Qt/5.12.2/gcc_64/include/QtQuick/5.12.2 -I/home/ghguest/Qt/5.12.2/gcc_64/include/QtQuick/5.12.2/QtQuick -I/home/ghguest/Qt/5.12.2/gcc_64/include/QtGui/5.12.2 -I/home/ghguest/Qt/5.12.2/gcc_64/include/QtGui/5.12.2/QtGui -I/home/ghguest/Qt/5.12.2/gcc_64/include/QtQml/5.12.2 -I/home/ghguest/Qt/5.12.2/gcc_64/include/QtQml/5.12.2/QtQml -I.moc -isystem /usr/include/libdrm -I/home/ghguest/Qt/5.12.2/gcc_64/mkspecs/linux-g++ -o .obj/moc_qquicktimelineanimation_p.o .moc/moc_qquicktimelineanimation_p.cpp
rm -f libqtquicktimelineplugin.so
g++ -Wl,--enable-new-dtags -Wl,-z,origin -Wl,-rpath,\$ORIGIN/../../../lib -Wl,-rpath,\$ORIGIN/../../../lib -shared -o libqtquicktimelineplugin.so .obj/qquickkeyframe.o .obj/qquicktimeline.o .obj/qquicktimelineanimation.o .obj/qtquicktimelineplugin.o .obj/moc_qquickkeyframe_p.o .obj/moc_qquicktimeline_p.o .obj/moc_qquicktimelineanimation_p.o  -L/home/ghguest/Qt/5.12.2/gcc_64/lib -lQt5Quick -lQt5Gui -lQt5Qml -lQt5Network -lQt5Core -lGL -lpthread -lQt5Quick -L/home/ghguest/Qt/5.12.2/gcc_64/lib -lQt5Gui -lQt5Qml -lQt5Network -lQt5Core -lpthread   
/usr/bin/ld: cannot find -lGL
collect2: error: ld returned 1 exit status
Makefile:88: recipe for target '../../../qml/QtQuick/Timeline/libqtquicktimelineplugin.so' failed
make[3]: *** [../../../qml/QtQuick/Timeline/libqtquicktimelineplugin.so] Error 1
make[3]: Leaving directory '/home/ghguest/qtquicktimeline/src/imports/timeline'
Makefile:46: recipe for target 'sub-timeline-make_first' failed
make[2]: *** [sub-timeline-make_first] Error 2
make[2]: Leaving directory '/home/ghguest/qtquicktimeline/src/imports'
Makefile:46: recipe for target 'sub-imports-make_first' failed
make[1]: *** [sub-imports-make_first] Error 2
make[1]: Leaving directory '/home/ghguest/qtquicktimeline/src'
Makefile:47: recipe for target 'sub-src-make_first' failed
make: *** [sub-src-make_first] Error 2

Can anyone suggest a possible cause/solution?

Thanks!