git clone email@example.com:urho3d/Urho3D.git cd Urho3D mkdir build cd build cmake .. -DURHO3D_SAMPLES=1 -DURHO3D_C++11=1 CMake Error at Source/ThirdParty/SDL/cmake/macros.cmake:73 (message): *** ERROR: Missing Xext.h, maybe you need to install the libxext-dev package? Call Stack (most recent call first): Source/ThirdParty/SDL/cmake/sdlchecks.cmake:380 (message_error) Source/ThirdParty/SDL/CMakeLists.txt:923 (CheckX11)
I have installed all the libraries mentioned in the docs: libx11-dev libxrandr-dev libasound2-dev and libxext-dev. The header file exists on my machine at /usr/include/X11/extensions/Xext.h. Maybe it’s a problem with FindSDL.cmake?