feat: 新增小爱音箱交叉编译环境
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Del Wang
Del
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squashfs-root
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root.squashfs
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# syntax=docker/dockerfile:1.4
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FROM ubuntu:20.04
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# 1. 环境变量合并，减少层数
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ENV DEBIAN_FRONTEND=noninteractive \
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PATH="/opt/toolchain/bin:/root/.cargo/bin:${PATH}" \
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PKG_CONFIG_ALLOW_CROSS=1 \
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PKG_CONFIG_SYSROOT_DIR=/opt/sysroot \
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PKG_CONFIG_LIBDIR=/opt/sysroot/usr/lib/pkgconfig:/opt/sysroot/lib/pkgconfig \
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CARGO_TARGET_ARMV7_UNKNOWN_LINUX_GNUEABIHF_LINKER=arm-linux-gnueabihf-gcc \
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CC_armv7_unknown_linux_gnueabihf="arm-linux-gnueabihf-gcc --sysroot=/opt/sysroot"
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# 2. 基础依赖与多架构源配置合并
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# 使用 --mount=type=cache 优化 apt 操作
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RUN --mount=type=cache,target=/var/cache/apt,sharing=locked \
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--mount=type=cache,target=/var/lib/apt,sharing=locked \
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sed -i 's/archive.ubuntu.com/mirrors.aliyun.com/g' /etc/apt/sources.list && \
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sed -i 's/security.ubuntu.com/mirrors.aliyun.com/g' /etc/apt/sources.list && \
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sed -i 's/deb http/deb [arch=amd64] http/g' /etc/apt/sources.list && \
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echo "deb [arch=armhf] http://mirrors.aliyun.com/ubuntu-ports/ focal main restricted universe multiverse" > /etc/apt/sources.list.d/armhf.list && \
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echo "deb [arch=armhf] http://mirrors.aliyun.com/ubuntu-ports/ focal-updates main restricted universe multiverse" >> /etc/apt/sources.list.d/armhf.list && \
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dpkg --add-architecture armhf && \
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apt-get update && apt-get install -y --no-install-recommends \
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ca-certificates curl git build-essential qemu-user-static pkg-config libssl-dev xz-utils squashfs-tools \
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crossbuild-essential-armhf libasound2-dev:armhf libopus-dev:armhf libssl-dev:armhf && \
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# 删除 lists 文件以减小体积
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rm -rf /var/lib/apt/lists/*
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# 3. 安装 Linaro Toolchain & Rust
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# 将下载和清理放在一层，减少体积
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RUN mkdir -p /opt/toolchain && \
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curl -fSL https://releases.linaro.org/components/toolchain/binaries/latest-7/arm-linux-gnueabihf/gcc-linaro-7.5.0-2019.12-x86_64_arm-linux-gnueabihf.tar.xz | tar -xJ -C /opt/toolchain --strip-components=1 && \
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curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y --default-toolchain stable && \
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rustup target add armv7-unknown-linux-gnueabihf
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WORKDIR /app
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# 4. 脚本与 Rootfs 处理
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# 使用 --mount=bind 减少一次 COPY 导致的镜像体积增加
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COPY run.sh runtime.sh /usr/local/bin/
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RUN chmod +x /usr/local/bin/run.sh /usr/local/bin/runtime.sh
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# 处理 root.squashfs：利用临时挂载或直接解压并删除
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RUN --mount=type=bind,source=root.squashfs,target=/app/root.squashfs \
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mkdir -p /opt/sysroot && unsquashfs -d /opt/sysroot -f /app/root.squashfs
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# 5. 构建混合 Sysroot 逻辑优化
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# 将所有文件操作合并到一个 RUN 块，减少 Metadata 冗余
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RUN set -e; \
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# 1. 自动为共享库创建 .so 软链接
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find /opt/sysroot/lib /opt/sysroot/usr/lib -name "lib*.so.*" | while read -r src; do \
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link_name=$(echo "$src" | sed 's/\.so\..*$/.so/'); \
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if [ ! -e "$link_name" ]; then \
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ln -s "$(basename "$src")" "$link_name"; \
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fi; \
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done; \
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# 2. 拷贝 crt*.o 文件
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find /opt/toolchain/arm-linux-gnueabihf/libc -name "*crt*.o" -exec cp {} /opt/sysroot/usr/lib/ \; ; \
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# 3. 拷贝 libc_nonshared.a
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cp /opt/toolchain/arm-linux-gnueabihf/libc/usr/lib/libc_nonshared.a /opt/sysroot/usr/lib/; \
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if [ -f /opt/toolchain/arm-linux-gnueabihf/libc/usr/lib/libpthread_nonshared.a ]; then \
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cp /opt/toolchain/arm-linux-gnueabihf/libc/usr/lib/libpthread_nonshared.a /opt/sysroot/usr/lib/; \
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fi; \
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# 4. 生成 Linker Scripts
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printf "OUTPUT_FORMAT(elf32-littlearm)\nGROUP ( /lib/libc.so.6 /usr/lib/libc_nonshared.a AS_NEEDED ( /lib/ld-linux-armhf.so.3 ) )\n" > /opt/sysroot/usr/lib/libc.so; \
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if [ -f /opt/sysroot/lib/libpthread.so.0 ]; then \
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printf "OUTPUT_FORMAT(elf32-littlearm)\nGROUP ( /lib/libpthread.so.0 /usr/lib/libpthread_nonshared.a )\n" > /opt/sysroot/usr/lib/libpthread.so; \
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fi; \
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# 5. 注入头文件和 pkgconfig
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cp -r /usr/include/alsa /opt/sysroot/usr/include/ 2>/dev/null || true; \
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cp -r /usr/include/opus /opt/sysroot/usr/include/ 2>/dev/null || true; \
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if [ -d /usr/include/arm-linux-gnueabihf ]; then \
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cp -r /usr/include/arm-linux-gnueabihf/* /opt/sysroot/usr/include/ 2>/dev/null || true; \
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fi; \
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if [ -d /usr/lib/arm-linux-gnueabihf/pkgconfig ]; then \
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cp -r /usr/lib/arm-linux-gnueabihf/pkgconfig/* /opt/sysroot/usr/lib/pkgconfig/ 2>/dev/null || true; \
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fi
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# 6. 设置 Rust 链接参数
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ENV CARGO_TARGET_ARMV7_UNKNOWN_LINUX_GNUEABIHF_RUSTFLAGS="\
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-C link-arg=--sysroot=/opt/sysroot \
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-C link-arg=-Wl,-dynamic-linker,/lib/ld-linux-armhf.so.3 \
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-C link-arg=-L/opt/sysroot/usr/lib \
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-C link-arg=-L/opt/sysroot/lib \
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-C link-arg=-Wl,-rpath-link,/opt/sysroot/usr/lib \
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-C link-arg=-Wl,-rpath-link,/opt/sysroot/lib"
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CMD ["/bin/bash"]
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# Makefile for open-xiaoai-runtime
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# 使用 host.docker.internal 访问宿主机的代理端口（加速构建）
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# 注意：代理软件需要开启 "Allow LAN"（允许局域网连接）
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PROXY := http://host.docker.internal:7890
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IMAGE_NAME := idootop/open-xiaoai-runtime:oh2p
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# 显示帮助信息
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help:
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@echo "Available targets:"
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@echo " make build - 构建交叉编译环境镜像"
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@echo " make run-x86 - 进入交叉编译环境（Ubuntu x86_64）"
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@echo " make run-armv7 - 进入小爱音箱模拟环境（OpenWrt ARMv7）"
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@echo " make help - 显示此帮助信息"
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@echo ""
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@echo "Variables:"
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@echo " PROXY=$(PROXY)"
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@echo " IMAGE_NAME=$(IMAGE_NAME)"
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# 构建交叉编译环境镜像
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build:
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@echo "Building Docker image: $(IMAGE_NAME)..."
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docker build \
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--build-arg http_proxy=$(PROXY) \
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--build-arg https_proxy=$(PROXY) \
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-t $(IMAGE_NAME) .
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# 进入交叉编译环境（Ubuntu x86_64）
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run-x86:
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@echo "Entering cross-compilation environment (Ubuntu x86_64)..."
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docker run --rm -it --privileged $(IMAGE_NAME)
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# 进入小爱音箱模拟环境（OpenWrt ARMv7）
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run-armv7:
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@echo "Entering XiaoAi speaker simulation environment (OpenWrt ARMv7)..."
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docker run --rm -it --privileged $(IMAGE_NAME) run
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# Open-XiaoAI Runtime
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小爱音箱 ARMv7 交叉编译 + 模拟运行环境（基于 OH2P v1.58.1 固件）
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## 概述
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小爱音箱使用的 Linux 系统较旧，glibc 版本为 2.25，需要使用 `gcc-linaro-7.5.0-2019.12` 工具链才能编译出兼容的程序。
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```bash
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root@OH2P:~# uname -a
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Linux OH2P 4.9.61 #1 SMP PREEMPT Fri Jun 27 06:11:47 2025 aarch64 GNU/Linux
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root@OH2P:~# file /lib/libc-2.25.so
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ELF 32-bit LSB shared object, ARM, EABI5 version 1 (GNU/Linux),
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dynamically linked, interpreter /lib/ld-linux-armhf.so.3, for GNU/Linux 3.2.0, stripped
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```
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## Rust 交叉编译示例
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编译产物可直接在小爱音箱上运行。
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```bash
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cd /path/to/your-rust-project
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# 使用预先构建好的 Docker 环境进行交叉编译
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docker run --rm idootop/open-xiaoai-runtime:oh2p \
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-v $(shell pwd):/app \
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cargo build --target armv7-unknown-linux-gnueabihf --release
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```
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## 环境说明
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**交叉编译环境**（Ubuntu 20.04 x86_64）
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- Linaro GCC 7.5.0 (arm-linux-gnueabihf)
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- Rust 稳定版 + armv7-unknown-linux-gnueabihf target
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- 包含 ALSA、Opus、OpenSSL 等系统库（ARMv7 版本）
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- 从小爱音箱固件提取的完整 Sysroot
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**模拟运行环境**（QEMU 用户态）
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- ARMv7 架构（32-bit ARM）
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- OpenWrt 定制系统 + glibc 2.25
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- 使用小爱音箱真实 rootfs
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- 不支持音频录制/播放等操作，需在小爱音箱真机运行
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## 自定义配置
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### 更换固件
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默认使用 OH2P v1.58.1 固件。如需使用其他型号和版本：
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```bash
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# 克隆代码
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git clone https://github.com/idootop/open-xiaoai.git
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# 进入当前项目根目录
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cd packages/runtime
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# 【重要】将新的 `root.squashfs` 放到当前目录
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# 构建镜像
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make build
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```
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PS：你可以修改 `Makefile` 中的代理地址加速镜像构建（代理软件需开启局域网访问）。
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```makefile
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PROXY := http://host.docker.internal:7890 # 对应 0.0.0.0:7890
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```
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### 其他 Makefile 命令
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```bash
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# 构建镜像
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make build
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# 进入交叉编译环境（Ubuntu x86_64）
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make run-x86
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# 进入小爱音箱模拟环境（OpenWrt ARMv7）
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make run-armv7
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```
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#!/bin/bash
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set -e
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# 定义 sysroot 目录
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SYSROOT_DIR="/opt/sysroot"
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# 检查第一个参数。如果在 sysroot 下存在该文件，则自动补全路径
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# 比如 `run /bin/sh` 会被转换为 `run /opt/sysroot/bin/sh`
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if [ -n "$1" ] && [ -f "$SYSROOT_DIR$1" ]; then
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CMD="$SYSROOT_DIR$1"
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shift
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set -- "$CMD" "$@"
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fi
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if [ $# -eq 0 ]; then
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# 如果没有提供参数，则默认在 sysroot 中启动 shell
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exec runtime
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else
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exec qemu-arm-static -L "$SYSROOT_DIR" "$@"
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fi
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@@ -0,0 +1,37 @@
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#!/bin/bash
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SYSROOT="/opt/sysroot"
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QEMU_BIN="/usr/bin/qemu-arm-static"
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echo "正在准备 OpenWrt 模拟环境..."
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# 1. 拷贝 QEMU 静态二进制文件
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cp "$QEMU_BIN" "$SYSROOT/usr/bin/"
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# 2. 挂载必要文件系统
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mount_fs() {
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for dir in proc sys dev dev/pts tmp; do
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mkdir -p "$SYSROOT/$dir"
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if ! mountpoint -q "$SYSROOT/$dir"; then
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if [[ "$dir" == "proc" ]]; then
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mount -t proc proc "$SYSROOT/$dir"
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elif [[ "$dir" == "sys" ]]; then
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mount -t sysfs sysfs "$SYSROOT/$dir"
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else
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mount --bind "/$dir" "$SYSROOT/$dir"
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fi
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fi
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done
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}
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mount_fs
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# 3. 执行进入命令
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# 注意：OpenWrt 默认没有 bash，通常使用 /bin/sh (busybox)
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echo "------------------------------------------------"
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echo "成功进入 OpenWrt 环境。输入 'exit' 退出。"
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echo "------------------------------------------------"
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chroot "$SYSROOT" /usr/bin/$(basename $QEMU_BIN) /bin/sh
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