Can not start helloworld demo for arm rk3568 on ubuntu 18.04

[zrz4066]

I can not start the hello world slint demo,The following are the error message.

thread 'main' panicked at 'Failed to initialize any backend! Wayland status: NoCompositorListening X11 status: LibraryOpenError(OpenError { kind: Library, detail: "opening library failed (Dynamic loading not supported); opening library failed (Dynamic loading not supported)" })', /home/ice/.cargo/registry/src/rsproxy.cn-8f6827c7555bfaf8/winit-0.28.6/src/platform_impl/linux/mod.rs:757:9
note: run with RUST_BACKTRACE=1 environment variable to display a backtraceroot@linux:~#

 .-/+oossssoo+/-.               root@linux
    `:+ssssssssssssssssss+:`           ----------
  -+ssssssssssssssssssyyssss+-         OS: Ubuntu 18.04.5 LTS aarch64
.ossssssssssssssssssdMMMNysssso.       Host: rpdzkj dr4-rk3568 base on Rockchip RK3568 EVB1 DDR4 V10 Board

/ssssssssssshdmmNNmmyNMMMMhssssss/ Kernel: 4.19.232
+ssssssssshmydMMMMMMMNddddyssssssss+ Uptime: 4 mins
/sssssssshNMMMyhhyyyyhmNMMMNhssssssss/ Packages: 1332
.ssssssssdMMMNhsssssssssshNMMMdssssssss. Shell: bash 4.4.20
+sssshhhyNMMNyssssssssssssyNMMMysssssss+ Resolution: 1920x1080
ossyNMMMNyMMhsssssssssssssshmmmhssssssso Theme: Adwaita [GTK3]
ossyNMMMNyMMhsssssssssssssshmmmhssssssso Icons: Adwaita [GTK3]
+sssshhhyNMMNyssssssssssssyNMMMysssssss+ Terminal: /dev/pts/1
.ssssssssdMMMNhsssssssssshNMMMdssssssss. CPU: (4) @ 1.992GHz
/sssssssshNMMMyhhyyyyhdNMMMNhssssssss/ Memory: 325MiB / 3900MiB
+sssssssssdmydMMMMMMMMddddyssssssss+
/ssssssssssshdmNNNNmyNMMMMhssssss/
.ossssssssssssssssssdMMMNysssso.
-+sssssssssssssssssyyyssss+-
:+ssssssssssssssssss+:
.-/+oossssoo+/-.

[ogoffart]

What happens is that Slint could not open neither a wayland nor an X11 connection. Are you running any of these?

The error to open an X11 connection is

opening library failed (Dynamic loading not supported)

Which is curious. Are you using musl by any chance? I think winit will need to load some x11 dynamic library to work.

The error to open wayland is

NoCompositorListening

Which basically mean that no wayland server is running.

(I converted the issue into a discussion because it is more suited for such questions while the issue tracker is for bug tracking)

[zrz4066]

I use musl 。 I use the following command to generate executable file
cargo build --release --target armv7-unknown-linux-musleabihf

The following is error message of the runnning demo

[ogoffart]

I don't know if winit with x11 can be supported.
Apparently it can if you add crt-static in your flags: rust-windowing/winit#1818 (comment)