# Cross-compilation image for ARMv7 based on Debian 12
# Uses multiarch to install ARMv7 libraries on x86_64 host

FROM debian:12

# Install Rust toolchain
RUN apt-get update && apt-get install -y --no-install-recommends \
    curl \
    ca-certificates \
    && curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y --default-toolchain stable \
    && rm -rf /var/lib/apt/lists/*

ENV PATH="/root/.cargo/bin:${PATH}"

# Add armhf architecture
RUN dpkg --add-architecture armhf

# Install cross-compiler and native build tools
RUN apt-get update && apt-get install -y --no-install-recommends \
    build-essential \
    pkg-config \
    cmake \
    nasm \
    git \
    libclang-dev \
    llvm \
    gcc-arm-linux-gnueabihf \
    g++-arm-linux-gnueabihf \
    libc6-dev-armhf-cross \
    && rm -rf /var/lib/apt/lists/*

# Install ARMv7 development libraries
RUN apt-get update && apt-get install -y --no-install-recommends \
    libasound2-dev:armhf \
    libv4l-dev:armhf \
    libudev-dev:armhf \
    zlib1g-dev:armhf \
    libjpeg62-turbo-dev:armhf \
    libyuv-dev:armhf \
    libavcodec-dev:armhf \
    libavformat-dev:armhf \
    libavutil-dev:armhf \
    libswscale-dev:armhf \
    libswresample-dev:armhf \
    libx264-dev:armhf \
    libx265-dev:armhf \
    libvpx-dev:armhf \
    libopus-dev:armhf \
    libva-dev:armhf \
    libdrm-dev:armhf \
    libx11-dev:armhf \
    libxcb1-dev:armhf \
    libxau-dev:armhf \
    libxdmcp-dev:armhf \
    && rm -rf /var/lib/apt/lists/*

# Add Rust target
RUN rustup target add armv7-unknown-linux-gnueabihf

# Configure environment for cross-compilation
ENV CARGO_TARGET_ARMV7_UNKNOWN_LINUX_GNUEABIHF_LINKER=arm-linux-gnueabihf-gcc \
    CC_armv7_unknown_linux_gnueabihf=arm-linux-gnueabihf-gcc \
    CXX_armv7_unknown_linux_gnueabihf=arm-linux-gnueabihf-g++ \
    AR_armv7_unknown_linux_gnueabihf=arm-linux-gnueabihf-ar \
    PKG_CONFIG_PATH=/usr/lib/arm-linux-gnueabihf/pkgconfig \
    PKG_CONFIG_ALLOW_CROSS=1