Michael Smith
a5b04fcd08
Move device-specific content (hardware, software, libraries) from TOOLCHAIN.md into new docs/rg35xx-plus.md. Add partition layout, full boot chain trace (systemd → launcher.sh → loadapp.sh → dmenu_ln), and sdlamp2 deployment instructions via dmenu_ln config toggle. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
35 lines
1.4 KiB
Markdown
35 lines
1.4 KiB
Markdown
# Build Container
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arm64 Docker build container for producing device binaries. For target device details see [`rg35xx-plus.md`](rg35xx-plus.md).
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The `docker-arm64/` directory contains a Docker setup that runs an arm64 Ubuntu 22.04 container via QEMU user-mode emulation. This matches the target device exactly — same distro, same glibc 2.35, same library versions. The project's native `make` (using `pkg-config`) works as-is inside the container, no cross-compilation flags needed.
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### Prerequisites
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QEMU binfmt handlers must be registered on the host (one-time setup, persists across reboots):
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```sh
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docker run --privileged --rm tonistiigi/binfmt --install arm64
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```
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### Usage
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From the `docker-arm64/` directory:
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```sh
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make build # one-shot: build sdlamp2 inside the container
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make shell # interactive bash shell for development
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make clean # remove the Docker image
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```
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The container mounts the project root at `/workspace`. Output binary is `build/sdlamp2` (`ELF 64-bit ARM aarch64`).
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### Image Contents
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- **Base:** `ubuntu:22.04` (arm64)
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- **Build tools:** `build-essential`, `pkg-config`
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- **SDL2:** `libsdl2-dev`, `libsdl2-image-dev`
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- **FFmpeg:** `libavformat-dev`, `libavcodec-dev`, `libavutil-dev`, `libswresample-dev`
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The image is tagged `arm64-dev` and is generic enough to reuse for other projects targeting the same device.
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