ccgo 3.4.2

A high-performance C++ cross-platform build CLI
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# Dockerfile for building Apple platform libraries (macOS/iOS/watchOS/tvOS) on any platform
# Uses OSXCross for cross-compilation from Linux to Apple platforms
FROM ubuntu:22.04

# Prevent interactive prompts during installation
ENV DEBIAN_FRONTEND=noninteractive

# Install build dependencies
RUN apt-get update && apt-get install -y --no-install-recommends \
    build-essential \
    clang \
    cmake \
    git \
    wget \
    curl \
    zip \
    unzip \
    pkg-config \
    libxml2-dev \
    libssl-dev \
    libbz2-dev \
    libpng-dev \
    libjpeg-dev \
    zlib1g-dev \
    patch \
    xz-utils \
    cpio \
    ca-certificates \
    python3 \
    python3-pip \
    && rm -rf /var/lib/apt/lists/*

# Set up OSXCross
# OSXCross allows cross-compilation from Linux to macOS/iOS/watchOS/tvOS
WORKDIR /opt

# Clone OSXCross repository
RUN git clone https://github.com/tpoechtrager/osxcross.git

WORKDIR /opt/osxcross

# Download Xcode SDK
# Note: You need to provide the Xcode SDK tarball
# Download from: https://github.com/joseluisq/macosx-sdks/releases
# For this Dockerfile, we'll download a publicly available SDK
RUN wget -q https://github.com/joseluisq/macosx-sdks/releases/download/13.3/MacOSX13.3.sdk.tar.xz -O tarballs/MacOSX13.3.sdk.tar.xz

# Build OSXCross toolchain
# This compiles the cross-compilation toolchain for Apple platforms
ENV UNATTENDED=1
RUN ./build.sh

# Add OSXCross to PATH
ENV PATH="/opt/osxcross/target/bin:${PATH}"
ENV OSXCROSS_ROOT="/opt/osxcross"
ENV OSXCROSS_TARGET_DIR="/opt/osxcross/target"
ENV OSXCROSS_SDK="MacOSX13.3.sdk"

# Set up iOS SDK support
# OSXCross can also target iOS, watchOS, tvOS
RUN ./build_compiler_rt.sh || true

# Set working directory
WORKDIR /workspace

# Set environment variables for Apple cross-compilation
ENV LANG=C.UTF-8 \
    LC_ALL=C.UTF-8 \
    CC=o64-clang \
    CXX=o64-clang++ \
    AR=x86_64-apple-darwin22-ar \
    RANLIB=x86_64-apple-darwin22-ranlib

# Install ccgo from PyPI (pre-compiled wheel, fast installation)
RUN pip3 install --no-cache-dir ccgo

# Verify OSXCross toolchain installation
RUN echo "=== OSXCross Toolchain Verification ===" && \
    o64-clang --version && \
    o64-clang++ --version && \
    cmake --version && \
    python3 --version && \
    ccgo --version && \
    echo "OSXCross SDK: ${OSXCROSS_SDK}"

# Entry point - execute build script
ENTRYPOINT ["/bin/bash", "-c"]