R3C → C++ → Rust → ASM : Industrial Embedded Long-Term Sustain Support
Rust-Embedded-LTSS extends the philosophy of R3C and Rust-LTSS into the industrial embedded domain.
It represents the hardware-level evolution of the R3C pipeline — from
C++ → Rust → ASM, combining compiler independence with long-term stability.
Goal: “Language sustainability (R3C) + industrial longevity (LTSS)” → Hardware survivability (Embedded-LTSS)
This project is not just firmware research — it’s the Industrial Branch of R3C Foundation’s LTSS ecosystem.
[C++] → [R3C Core] → [Rust Stable] → [no_std HAL] → [ASM Binary]
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코드 복사
R3C acts as the universal backbone.
Rust-Embedded-LTSS builds upon its LLVM-free, cross-platform pipeline to ensure
hardware-level reliability across multiple architectures.
| Project | Focus | Description |
|---|---|---|
| R3C | Independent Rust build (C++→Rust→ASM) | Language survivability experiment |
| Rust-LTSS | Long-Term Sustain System for Rust | Software ecosystem longevity |
| Rust-Embedded-LTSS | Industrial embedded LTSS | Hardware survivability experiment |
✅ Build on R3C architecture (C++ → Rust → ASM)
✅ Use Rust Stable only (no nightly)
✅ Manage MCU / RTOS / board-specific LTS cycles
✅ Cross-Platform: Linux / macOS / Windows / Raspberry Pi
✅ no_std firmware-level LTS system
| MCU / Board | Architecture | OS / RTOS | Status |
|---|---|---|---|
| Raspberry Pi 5 | ARMv8 | Linux RT | Planned |
| STM32F4 | Cortex-M4 | FreeRTOS | Planned |
| RP2040 | ARMv6-M | Bare-metal | Planned |
| Kendryte K210 | RISC-V | RT-Thread | Planned |
| Name | Period | Description |
|---|---|---|
| LTS-2028-Embedded | 2028 – 2033 | Cortex-M, ARMv7-based LTS |
| LTS-2034-Embedded | 2034 – 2039 | RISC-V, ARMv9 expansion |
Each LTSS cycle follows the R3C Foundation’s 5-year LTS policy,
adapting to evolving hardware generations such as RISC-V and ARMv9.
“C++ is the root, Rust is the stem, and ASM is the fruit.”
— R3C / LTSS Embedded Manifest, 2025
- Stability over novelty
- Hardware should inherit software’s discipline
- The compiler is not just a tool — it’s the ecosystem’s memory
- Build once, sustain for decades
Rust-Embedded-LTSS unifies three layers of survival:
Language → Code → Hardware.
Rust-Embedded-LTSS directly integrates with the R3C hybrid build chain.
| Component | Role |
|---|---|
r3c-core |
C++ → Rust transpiler |
r3c-asmbuilder |
ASM backend generator |
cpppm |
C++ package/dependency manager |
rust-ltss |
Long-Term Sustain policy provider |
The project relies on CMake + Cargo hybrid builds and
is compatible across Linux, macOS, Windows, and ARM platforms.
| Year | Milestone |
|---|---|
| 2026 | Complete R3C → Rust no_std pipeline |
| 2027 | Cross-target build (ARM / RISC-V) |
| 2028 | Launch LTS-2028-Embedded |
| 2034 | Transition to LTS-2034-Embedded (RISC-V / ARMv9) |
| 2035 + | Industrial LTSS Alliance (R3C Foundation) |
MIT License © 0200134
Free for use, modification, and distribution.
The official launch of Rust-Embedded-LTSS is scheduled for 2028
as part of the R3C Foundation’s extended LTSS initiative.