current MITK master, Ubuntu 18.04, cmake 3.12.2, the build itself works fine and MITKWorkbench seems to work normal
CMake Warning (dev) at /opt/CMake/share/cmake-3.12/Modules/FindOpenGL.cmake:270 (message): Policy CMP0072 is not set: FindOpenGL prefers GLVND by default when available. Run "cmake --help-policy CMP0072" for policy details. Use the cmake_policy command to set the policy and suppress this warning. FindOpenGL found both a legacy GL library: OPENGL_gl_LIBRARY: /usr/lib/x86_64-linux-gnu/libGL.so and GLVND libraries for OpenGL and GLX: OPENGL_opengl_LIBRARY: /usr/lib/x86_64-linux-gnu/libOpenGL.so OPENGL_glx_LIBRARY: /usr/lib/x86_64-linux-gnu/libGLX.so OpenGL_GL_PREFERENCE has not been set to "GLVND" or "LEGACY", so for compatibility with CMake 3.10 and below the legacy GL library will be used. Call Stack (most recent call first): CMake/PackageDepends/MITK_OpenGL_Config.cmake:1 (find_package) CMake/mitkFunctionUseModules.cmake:52 (include) CMake/mitkFunctionUseModules.cmake:131 (_include_package_config) CMake/mitkFunctionCreateModule.cmake:606 (mitk_use_modules) Modules/LegacyGL/CMakeLists.txt:3 (MITK_CREATE_MODULE) This warning is for project developers. Use -Wno-dev to suppress it.