Examples fail to run

[nebrelbug]

Describe the bug

When running cargo run --example widgets --release, the build fails with

error: failed to run custom build command for `xkbcommon-sys v0.7.4`
...
Caused by:
  process didn't exit successfully: `/home/nebrelbug/Coding/orbtk-tests/orbtk/target/release/build/xkbcommon-sys-6ca975e3b9f6478a/build-script-build` (exit code: 101)
  --- stdout
  cargo:rerun-if-env-changed=XKBCOMMON_NO_PKG_CONFIG
  cargo:rerun-if-env-changed=PKG_CONFIG
  cargo:rerun-if-env-changed=PKG_CONFIG_PATH_x86_64-unknown-linux-gnu
...

To Reproduce
Steps to reproduce the behavior:

1. Clone the OrbTK repository
2. Run cargo run --example widgets --release inside the repository

Expected behavior
Examples would run.

Screenshots
If applicable, add screenshots to help explain your problem.

Desktop (please complete the following information):

• Pop!_OS 20.04

Additional context
Problem occurs when using nightly or stable Rust.

[FloVanGH]

You first need to install

sudo apt install libxkbcommon-dev libwayland-cursor0 libwayland-dev

[FloVanGH]

Does is worked?

[FloVanGH]

I close this now if you have still that issue you could reopen it.

[nebrelbug]

This fixed it! Is this anywhere in the docs? Might be helpful for other users.

[kivimango]

It's in the README

[nebrelbug]

@kivimango oops, don't know how I missed that. Thanks!

Are those packages required in order to run OrbTK in general?

[kivimango]

I'm not sure, I would say yes, I'm on win 10 currently.

[darkcharmander]

Installing the packages that @FloVanGH mentioned didn't work: they were already installed on my computer but I still have problems,

The 'image' example doesn't work. It compiles fine but after you try to start it, you get this in the console:

X Error of failed request:  BadValue (integer parameter out of range for operation)
  Major opcode of failed request:  1 (X_CreateWindow)
  Value in failed request:  0x0
  Serial number of failed request:  85
  Current serial number in output stream:  92

Other examples like e.g. the calculator do work fine. It 'could' be a driver issue since I am running this machine in VirtualBox.
OS: Kubuntu 20.04 x64
Crate version: 0.3.1-alpha3

[shadiakiki1986]

In my case it turned out that the pkg-config program was not installed. Installed it with sudo apt-get install -y pkg-config. It turns out that there's an open issue for it in pkg-config-rs/issues/103, which in its turn is used by rust-xkbcommon-sys

I think this should be added to the list of dependencies to be installed for orbtk, especially that pkg-config does not come pre-installed on fresh ubuntu server 20.04, which would make "development-sense" if it gets some desktop GUI like lxde.

[darkcharmander]

I don't know why, but I re-downloaded orbtk and recompiled everything, and the image sample works now. Disregard my previous post!