On Ubuntu 16 I found it necessary to install the libqt5x11extras5-dev package. The configure step worked without it, but the build failed similar to yours. Do you have this one?
// RicV From: vbox-dev-boun...@virtualbox.org [mailto:vbox-dev-boun...@virtualbox.org] On Behalf Of Michael Williams Sent: Thursday, March 30, 2017 11:38 To: vbox-dev@virtualbox.org Subject: [vbox-dev] Building Virtual Box Failed When I try to build Virtual Box I get the message "kmk: *** No rule to make target `/usr/lib/x86_64-linux-gnu/libQt5X11Extras.so', needed by `/home/dev/source/VirtualBox-5.1.18/out/linux.amd64/release/obj/VirtualBox/VirtualBox'. Stop." qmake -v is version 3.1 and Qt is version 5.8.0 Any ideas how I can fix this?
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