Add support for arm64 linux.

[RedstoneWizard08]

Closes issue #1405

Info:

• Merges toolchain files into linux.toolchain.cmake
• Updates build image to use ubuntu and fixes issues with x86-only packages
• Updates build script
• Adds general linux/arm64 support to grpc-node

[linux-foundation-easycla]

The committers listed above are authorized under a signed CLA.

• ✅ login: RedstoneWizard08 / name: RedstoneWizard08 (1924d4a)

[murgatroid99]

I'm concerned about updating the base image to ubuntu:22.04. Historically, we have purposely run builds in an older environment to get compatibility with a wider range of glibc versions.

[RedstoneWizard08]

The only reason I did that was to get the dependents to install. I don't know if they're on other versions or operating systems, but I was on Ubuntu 22.04 at the time, so I used that. You can use whatever version or OS you want, just as long as it has the cross compilers.

[murgatroid99]

OK, here are the options as I see them:

• You get this to work with Debian Stretch
• We use this change as is, and if there are issues with glibc compatibility I will revert this change.

[RedstoneWizard08]

I'll work on using debian stretch, or some other distro with the equivalent glibc version.

[RedstoneWizard08]

The main problem is finding the gcc binaries for debian stretch. I might end up pulling from the ubuntu repo and manually installing them.

[RedstoneWizard08]

@murgatroid99 I have chosen a better third option - using static linking. This allows it to run on hopefully any glibc version (as my research says) and it compiles well with cross. The cross-compilers are unavailable for debian stretch, and they work really well on Ubuntu Jammy. Older Ubuntu versions with older or the same glibc versions (I.E. Artful) don't have cross compilers.

┌──([redacted]@remote)-[~/contrib/grpc-node/artifacts/grpc-tools/v1.12.3]
└─$ file bin/*
bin/grpc_node_plugin: ELF 32-bit LSB executable, Intel 80386, version 1 (GNU/Linux), statically linked, BuildID[sha1]=1cce182e104bd076bb0ee1e2ea24f03aa0eb58ad, for GNU/Linux 3.2.0, not stripped
bin/protoc:           ELF 32-bit LSB pie executable, Intel 80386, version 1 (GNU/Linux), dynamically linked, interpreter /lib/ld-linux.so.2, BuildID[sha1]=cefb2e76827c1d10602757355765336a017590b2, for GNU/Linux 3.2.0, not stripped
┌──([redacted]@remote)-[~/contrib/grpc-node/artifacts/grpc-tools/v1.12.3]
└─$ ldd bin/*
bin/grpc_node_plugin:
        not a dynamic executable
bin/protoc:
        not a dynamic executable
┌──([redacted]@remote)-[~/contrib/grpc-node/artifacts/grpc-tools/v1.12.3]
└─$

[murgatroid99]

It looks like the static linking arguments aren't accepted on Windows, and there's a linker error on Macos.

[RedstoneWizard08]

@murgatroid99 I just fixed that, hopefully.

[murgatroid99]

Thank you for your contribution.