Building on linux

[nicokoch]

Ok, so I ran into several problems when building on linux, one of which is easily solved:

1. KhronosGroup/glslang does not compile on linux with your included version. This issue was fixed by fix #171 - error: ‘isinf’ was not declared in this scope KhronosGroup/glslang#172 , so you should update that.
2. There is an error when building winit. I'm using multirust so I'm not really sure if this happens with a normal rust install. This is the output:

Compiling winit v0.4.8 (https://github.com/tomaka/winit#b4d4fee8)
/home/kokxx/.multirust/toolchains/nightly/cargo/git/checkouts/winit-a80c9921f4b7860e/master/src/api/x11/ffi.rs:14:5: 14:60 error: environment variable `OUT_DIR` not defined
/home/kokxx/.multirust/toolchains/nightly/cargo/git/checkouts/winit-a80c9921f4b7860e/master/src/api/x11/ffi.rs:14     include!(concat!(env!("OUT_DIR"), "/glx_bindings.rs"));
                                                                                                                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/home/kokxx/.multirust/toolchains/nightly/cargo/git/checkouts/winit-a80c9921f4b7860e/master/src/api/x11/ffi.rs:14:5: 14:60 error: couldn't read "/home/kokxx/.multirust/toolchains/nightly/cargo/git/checkouts/winit-a80c9921f4b7860e/master/src/api/x11/0/glx_bindings.rs": No such file or directory (os error 2)
/home/kokxx/.multirust/toolchains/nightly/cargo/git/checkouts/winit-a80c9921f4b7860e/master/src/api/x11/ffi.rs:14     include!(concat!(env!("OUT_DIR"), "/glx_bindings.rs"));
                                                                                                                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Could not compile `winit`.

To learn more, run the command again with --verbose.

[tomaka]

1. Will do!
2. I haven't updated winit to compile on Linux yet.

Also note that the VK_KHR_surface_win32 extension is hardcoded in the library for the moment, so you'll likely get a failed initialization.

[nicokoch]

Ah, thanks! I could probably hack around the VK_KHR_surface_win32 thing. About winit I know nothing

[tomaka]

It should be possible to use it on Linux now.

You just have to adjust these lines:

• https://github.com/tomaka/vulkano/blob/2a6252efbe32ca4e55a9822ece179da69f705075/vulkano/examples/teapot.rs#L4-L5
• https://github.com/tomaka/vulkano/blob/2a6252efbe32ca4e55a9822ece179da69f705075/vulkano/examples/teapot.rs#L30-L31
• https://github.com/tomaka/vulkano/blob/2a6252efbe32ca4e55a9822ece179da69f705075/vulkano/src/instance.rs#L107

Use the os::unix::WindowExt trait to get the window handle from winit: https://github.com/tomaka/winit/blob/master/src/os/unix.rs#L9-L23

[nicokoch]

Thanks for the quick support!
I fixed most of the problems, but I'm not really sure how to create the surface.
I can't do Surface::from_hwnd, because that's windows only. Can I somehow use from_display_mode, or should I implement a linux version manually?

[tomaka]

Oh I forgot to push my commit where I add the missing Surface constructors. It should be good now.

[nicokoch]

Works now, thanks a lot!

[tomaka]

The examples should now work out-of-the-box on Linux.