building (and trying to run) on Ubuntu/Wayland

[drzraf]

To build on Ubuntu, various things are necessary:

1. libocct-foundation-dev contains the /usr/lib/x86_64-linux-gnu/cmake/opencascade/OpenCASCADEConfig.cmake file find_package() looks for.
2. But said cmake package will complain if any of the libocct-* module is missing. All of them are necessary
3. => $ apt install libocct-*
4. Won't build if any of libglfw3, libglfw3-dev, libimgui-dev, libxrandr-dev, libtbb12 or libtbb-dev is missing (worth being added to the README file)
5. Also the include directory of the opencascade cmake package isn't automatically added to the final compilation command-line. An include_directories(${OpenCASCADE_INCLUDE_DIR}) is also needed.

Once done, it runs and output:

OpenGL info:
  GLXDirectRendering: Yes
  GLXVendor: SGI
  GLXVersion: 1.4
  GLXClientVendor: Mesa Project and SGI
  GLXClientVersion: 1.4
  GLvendor: Intel
  GLdevice: Mesa Intel(R) HD Graphics 630
  GLversion: 4.6 (Core Profile) Mesa 24.0.9
  GLSLversion: 4.60
  Max texture size: 16384
  Max FBO dump size: 4096x16384
  Max combined texture units: 192
  Max MSAA samples: 16
  Viewport: 800x600
  GPU memory: 15879 MiB
  ResolutionRatio: 

but only a black and sluggish OCCT IMGUI X window appear with no control.

I thought (without any proof) that it may be due to libglfw3 in Wayland environment. But replacing that lib by its libglfw3-wayland counterpart keeps compilation from succeeding:

/usr/bin/ld: CMakeFiles/OcctImgui.dir/GlfwOcctWindow.cpp.o: in function `GlfwOcctWindow::GlfwOcctWindow(int, int, TCollection_AsciiString const&)':
GlfwOcctWindow.cpp:(.text+0x14a): undefined reference to `glfwGetX11Display'
/usr/bin/ld: CMakeFiles/OcctImgui.dir/GlfwOcctWindow.cpp.o: in function `GlfwOcctWindow::NativeHandle() const':
GlfwOcctWindow.cpp:(.text+0x248): undefined reference to `glfwGetX11Window'
/usr/bin/ld: CMakeFiles/OcctImgui.dir/GlfwOcctWindow.cpp.o: in function `GlfwOcctWindow::NativeGlContext() const':
GlfwOcctWindow.cpp:(.text+0x26a): undefined reference to `glfwGetGLXContext'
collect2: error: ld returned 1 exit status

(These are part of the Native access glfw API)

[eryar]

Thanks for sharing.