VNC platform plugin fails to build on big-endian machines (PowerPC)

g++ -c -pipe -O2 -pipe -Wno-error -fstack-protector-strong --param=ssp-buffer-size=4 -fomit-frame-pointer -O2 -m32 -mtune=G4 -mno-altivec -msecure-plt -mhard-float -fira-loop-pressure -fira-hoist-pressure -ftree-vectorize -specs=/usr/lib/autobuild3/specs/hardened-cc1 -fno-delete-null-pointer-checks -std=c++1z -fvisibility=hidden -fvisibility-inlines-hidden -fno-exceptions -Wall -W -Wvla -Wdate-time -Wshift-overflow=2 -Wduplicated-cond -D_REENTRANT -fPIC -DQT_NO_FOREACH -DQT_NO_EXCEPTIONS -D_LARGEFILE64_SOURCE -D_LARGEFILE_SOURCE -DQT_NO_DEBUG -DQT_PLUGIN -DQT_SERVICE_SUPPORT_LIB -DQT_THEME_SUPPORT_LIB -DQT_FB_SUPPORT_LIB -DQT_EVENTDISPATCHER_SUPPORT_LIB -DQT_FONTDATABASE_SUPPORT_LIB -DQT_INPUT_SUPPORT_LIB -DQT_GUI_LIB -DQT_DEVICEDISCOVERY_SUPPORT_LIB -DQT_NETWORK_LIB -DQT_CORE_LIB -I. -I../../../../include -I../../../../include/QtServiceSupport -I../../../../include/QtServiceSupport/5.8.0 -I../../../../include/QtServiceSupport/5.8.0/QtServiceSupport -I../../../../include/QtThemeSupport -I../../../../include/QtThemeSupport/5.8.0 -I../../../../include/QtThemeSupport/5.8.0/QtThemeSupport -I../../../../include/QtFbSupport -I../../../../include/QtFbSupport/5.8.0 -I../../../../include/QtFbSupport/5.8.0/QtFbSupport -I../../../../include/QtEventDispatcherSupport -I../../../../include/QtEventDispatcherSupport/5.8.0 -I../../../../include/QtEventDispatcherSupport/5.8.0/QtEventDispatcherSupport -I../../../../include/QtFontDatabaseSupport -I../../../../include/QtFontDatabaseSupport/5.8.0 -I../../../../include/QtFontDatabaseSupport/5.8.0/QtFontDatabaseSupport -I../../../../include/QtInputSupport -I../../../../include/QtInputSupport/5.8.0 -I../../../../include/QtInputSupport/5.8.0/QtInputSupport -I../../../../include/QtGui/5.8.0 -I../../../../include/QtGui/5.8.0/QtGui -I../../../../include/QtGui -I../../../../include/QtDeviceDiscoverySupport -I../../../../include/QtDeviceDiscoverySupport/5.8.0 -I../../../../include/QtDeviceDiscoverySupport/5.8.0/QtDeviceDiscoverySupport -I../../../../include/QtCore/5.8.0 -I../../../../include/QtCore/5.8.0/QtCore -I../../../../include/QtNetwork -I../../../../include/QtCore -I.moc -I/usr/include/libdrm -I/usr/include/freetype2 -I/usr/include/libpng16 -I/usr/include/harfbuzz -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include -I/usr/include/freetype2 -I/usr/include/libpng16 -I/usr/include/harfbuzz -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include -I/usr/include/freetype2 -I/usr/include/libpng16 -I/usr/include/harfbuzz -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include -I../../../../mkspecs/linux-g++ -o .obj/main.o main.cpp
In file included from qvnc_p.h:43:0,
                 from main.cpp:42:
qvncscreen.h:76:22: error: expected ';' at end of member declaration
     bool swapBytes() const
                      ^~~~~
make: *** [Makefile:1855: .obj/main.o] Error 1