qtbase FTBFS without OpenGL

Hi,

is not possible build from sources if the "-no-opengl" flag is set. The problem is the function "QOpenGLFunctions" is used, but is an opengl function (not declared with the -no-opengl flag).
The problem is in the file src/platformsupport/eglconvenience/qeglconvenience.cpp

g++ -c -include .pch/Qt5PlatformSupport -pipe -pthread -I/usr/include/glib-2.0 -I/usr/lib/x86_64-linux-gnu/glib-2.0/include -I/usr/include/freetype2 -O2 -fPIC -fvisibility=hidden -fvisibility-inlines-hidden -std=c+0x -fno-exceptions -Wall -W -D_REENTRANT -DQT_NO_MTDEV -DQT_NO_LIBUDEV -DQT_NO_CAST_FROM_ASCII -DMESA_EGL_NO_X11_HEADERS -DQT_BUILD_PLATFORMSUPPORT_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 -DQ_FONTCONFIGDATABASE -DQT_NO_EXCEPTIONS -D_LARGEFILE64_SOURCE -D_LARGEFILE_SOURCE -DQT_NO_DEBUG -DQT_DBUS_LIB -DQT_GUI_LIB -DQT_CORE_LIB -I../../mkspecs/linux-g+ -I. -isystem /usr/include/freetype2 -I../3rdparty/atspi2 -Ilinuxaccessibility -I../../include -I../../include/QtPlatformSupport -I../../include/QtPlatformSupport/5.3.0 -I../../include/QtPlatformSupport/5.3.0/QtPlatformSupport -isystem /usr/include/libdrm -I../../include/QtGui/5.3.0 -I../../include/QtGui/5.3.0/QtGui -I../../include/QtDBus -I../../include/QtGui -I../../include/QtCore/5.3.0 -I../../include/QtCore/5.3.0/QtCore -I../../include/QtCore -I.moc -o .obj/qeglconvenience.o eglconvenience/qeglconvenience.cpp
eglconvenience/qeglconvenience.cpp: In member function ‘void* QEglConfigChooser::chooseConfig()’:
eglconvenience/qeglconvenience.cpp:248:14: error: ‘QOpenGLFunctions’ has not been declared
if (!QOpenGLFunctions::isES())
^
eglconvenience/qeglconvenience.cpp: In function ‘QSurfaceFormat q_glFormatFromConfig(EGLDisplay, EGLConfig, const QSurfaceFormat&)’:
eglconvenience/qeglconvenience.cpp:364:18: error: ‘QOpenGLFunctions’ has not been declared
&& !QOpenGLFunctions::isES()
^
make[2]: *** [.obj/qeglconvenience.o] Error 1