Arm build for Linux

[jacksongoode]

No description provided.

[Insprill]

I'd suggest we use cross to build for multiple architectures.

[jacksongoode]

I'd suggest we use cross to build for multiple architectures.

Thanks, I'll give it a go, this initial PR was just a stab in the dark.

[jacksongoode]

@Insprill If you have any experience with cross, I'd be happy for your help. It seems there are some issues with packages needed to be installed for each architecture.

[Insprill]

This is still required

[jacksongoode]

I suppose this is because cross uses the native action runner to do the amd compilation but not arm? I thought I could install these in the root Cargo.toml with:

[workspace.metadata.cross.target.aarch64-unknown-linux-gnu]
pre-build = [
    "dpkg --add-architecture $CROSS_DEB_ARCH",
    "apt-get update && apt-get --assume-yes install libgtk-3-dev:$CROSS_DEB_ARCH libssl-dev..."
]

But I get this error on the arm Ubuntu indicating they might not be installed...

cflags" "glib-2.0" "glib-2.0 >= 2.56"` did not exit successfully: exit status: 1
  error: could not find system library 'glib-2.0' required by the 'glib-sys' crate

  --- stderr
  Package glib-2.0 was not found in the pkg-config search path.
  Perhaps you should add the directory containing `glib-2.0.pc'
  to the PKG_CONFIG_PATH environment variable
  No package 'glib-2.0' found
  Package glib-2.0 was not found in the pkg-config search path.
  Perhaps you should add the directory containing `glib-2.0.pc'
  to the PKG_CONFIG_PATH environment variable
  No package 'glib-2.0' found

[jacksongoode]

@Insprill Took long enough... anyways let me know if you have any suggestions with the current implementation. One thing I removed was the cargo test. We could add that back as an independent job if you think its useful but because the Linux builds are happening in Docker images (for now until arm runners are public), we would have to install the dependencies twice.

[jacksongoode]

@Insprill I'm going to go ahead since I can't see any major consequence. We can add back the test if we'd like in a later PR.