🔨 Rework Build System with Meson

[meisZWFLZ]

Overview

Makefile bad. Meson good.

Motivation

• way easier to maintain than the nightmare fuel we currently have
• generates compile_commands.json automatically
• EXTREMELY fast
• dependency management via "wraps"

References (optional)

• resolves ✨ CMake #10
• resolves 🐛 __malloc_lock and __malloc_unlock are not resolved properly #16
• makes ✅ Add integration test suite #43, 🔨 Migrate build tools to LLVM #27, 🔨 Deterministic build process #23, and 🔨 vcpkg support #18 significantly easier

Implementation Details (optional)

• cross-compile information is in scripts/v5.ini
• build script is build.meson
• libv5rt is now a separate repo with its own build file. It's treated as a dependency, using meson's "wraps"
• python scripts are used to overcome some limitations of meson (like downloading, patching, and stripping libv5rt)

Test Plan:

• Get kernel to successfully compile
• Test that the kernel and a basic main.cpp works on robot

Notes

• The python scripts DO NOT force a dependency on python
  • meson executes them with its bundled interpreter
  • scripts only use the basic python library, no 3rd party libraries needed
• meson needs to be reconfigured every time source files are added, but at least you don't have to type out all the sources yourself

[jmakif]

LGTM

[ion098]

LGTM

[tropicaaal]

LGTM (Let's Go To Meson)