QtGui: No such file or directory

[Xiaodi]

Hi, I'm a beginner of Qt. I have installed Qt5.10.1 in Ubuntu16.04. After that I compile a software("GLE graphics") step by step. However, when I type make in the terminal, it occurs error. I paste the errors in the following, can someone tell me how should I fix this problem?

make[1]: Entering directory '/opt/gle-graphics-4.2.5/src/gui'
/usr/bin/qmake-qt4 
make
make[2]: Entering directory '/opt/gle-graphics-4.2.5/src/gui'
g++ -c -m64 -pipe -O2 -D_REENTRANT -Wall -W -DQT_NO_DEBUG_OUTPUT -DQT_NO_DEBUG -DQT_OPENGL_LIB -DQT_GUI_LIB -DQT_NETWORK_LIB -DQT_CORE_LIB -I/usr/share/qt4/mkspecs/linux-g++-64 -I. -I/usr/include/qt4/QtCore -I/usr/include/qt4/QtNetwork -I/usr/include/qt4/QtGui -I/usr/include/qt4/QtOpenGL -I/usr/include/qt4 -I. -I/usr/X11R6/include -Imoc -o objects/about.o about.cpp
about.cpp:26:17: fatal error: QtGui: No such file or directory   # Here is the error!!!!!
compilation terminated.
Makefile:849: recipe for target 'objects/about.o' failed
make[2]: *** [objects/about.o] Error 1
make[2]: Leaving directory '/opt/gle-graphics-4.2.5/src/gui'
MakefileAC:86: recipe for target 'domake' failed
make[1]: *** [domake] Error 2
make[1]: Leaving directory '/opt/gle-graphics-4.2.5/src/gui'
Makefile:153: recipe for target 'make_all' failed
make: *** [make_all] Error 2

Thanks in advance!
Xiaodi

[JonB]

@Xiaodi
You "have installed Qt5.10.1", but the whole qmake is for Qt 4? That does not look good....

[Xiaodi]

@JonB
This software "GLE graphics" uses qmake-qt4 automatically for compiling. So, does it mean, I should install a Qt4?

[JKSH]

@Xiaodi said in QtGui: No such file or directory:

This software "GLE graphics" uses qmake-qt4 automatically for compiling. So, does it mean, I should install a Qt4?

Yes.

Qt 5 is not compatible with Qt 4.