ci: fix remote cross compilation (#4)

Author: auricom

.github/workflows/docker.yml

@@ -27,6 +27,18 @@ jobs:
       contents: read
     steps:
       - uses: actions/checkout@v4
+      - name: Install build dependencies
+        run: |
+          sudo apt-get update
+          sudo apt-get install -y \
+            build-essential \
+            pkg-config \
+            libssl-dev \
+            libclang-dev \
+            clang \
+            llvm-dev \
+            gcc-multilib \
+            g++-multilib
       - uses: dtolnay/rust-toolchain@stable
       - uses: Swatinem/rust-cache@v2
         with:
@@ -40,4 +52,14 @@ jobs:
           docker run --privileged --rm tonistiigi/binfmt --install arm64,amd64
           docker buildx create --use --name cross-builder
       - name: Build and push image
-        run: make docker-build-push
+        run: |
+          export LIBCLANG_PATH=/usr/lib/llvm-18/lib
+          export BINDGEN_EXTRA_CLANG_ARGS="-I/usr/include"
+          export CC_x86_64_unknown_linux_gnu=x86_64-linux-gnu-gcc
+          export CXX_x86_64_unknown_linux_gnu=x86_64-linux-gnu-g++
+          export AR_x86_64_unknown_linux_gnu=x86_64-linux-gnu-ar
+          export CC_aarch64_unknown_linux_gnu=aarch64-linux-gnu-gcc
+          export CXX_aarch64_unknown_linux_gnu=aarch64-linux-gnu-g++
+          export AR_aarch64_unknown_linux_gnu=aarch64-linux-gnu-ar
+          export PKG_CONFIG_ALLOW_CROSS=1
+          make docker-build-push

Cross.toml

@@ -0,0 +1,14 @@
+[build]
+# Custom Docker images with proper build environment for native dependencies
+
+[target.x86_64-unknown-linux-gnu]
+dockerfile = "Dockerfile.cross-x86_64"
+
+[target.aarch64-unknown-linux-gnu]
+dockerfile = "Dockerfile.cross-aarch64"
+
+[build.env]
+passthrough = [
+    "RUST_LOG",
+    "CARGO_TERM_COLOR",
+]

Dockerfile.cross-aarch64

@@ -0,0 +1,27 @@
+FROM ghcr.io/cross-rs/cross:main
+
+# Install ARM64 cross-compilation toolchain
+RUN apt-get update && \
+    apt-get install -y \
+        gcc-aarch64-linux-gnu \
+        g++-aarch64-linux-gnu \
+        libc6-dev-arm64-cross \
+        pkg-config-aarch64-linux-gnu \
+        build-essential \
+        clang \
+        libclang-dev && \
+    rm -rf /var/lib/apt/lists/*
+
+# Set up environment variables for ARM64 cross-compilation
+# Keep host compiler for build scripts, only set target-specific variables
+ENV CC_aarch64_unknown_linux_gnu=aarch64-linux-gnu-gcc
+ENV CXX_aarch64_unknown_linux_gnu=aarch64-linux-gnu-g++
+ENV AR_aarch64_unknown_linux_gnu=aarch64-linux-gnu-ar
+ENV STRIP_aarch64_unknown_linux_gnu=aarch64-linux-gnu-strip
+ENV PKG_CONFIG_aarch64_unknown_linux_gnu=aarch64-linux-gnu-pkg-config
+ENV CARGO_TARGET_AARCH64_UNKNOWN_LINUX_GNU_LINKER=aarch64-linux-gnu-gcc
+ENV BINDGEN_EXTRA_CLANG_ARGS="-I/usr/aarch64-linux-gnu/include -I/usr/include"
+ENV CFLAGS_aarch64_unknown_linux_gnu="-I/usr/aarch64-linux-gnu/include -I/usr/include"
+ENV CPPFLAGS_aarch64_unknown_linux_gnu="-I/usr/aarch64-linux-gnu/include -I/usr/include"
+ENV JEMALLOC_SYS_WITH_LG_PAGE=16
+ENV PKG_CONFIG_ALLOW_CROSS=1

Dockerfile.cross-x86_64

@@ -0,0 +1,19 @@
+FROM ghcr.io/cross-rs/cross:main
+
+# Install additional build tools and headers
+RUN apt-get update && \
+    apt-get install -y \
+        build-essential \
+        pkg-config \
+        libclang-dev \
+        clang && \
+    rm -rf /var/lib/apt/lists/*
+
+# Set up environment variables for x86_64 cross-compilation
+ENV CC_x86_64_unknown_linux_gnu=x86_64-linux-gnu-gcc
+ENV CXX_x86_64_unknown_linux_gnu=x86_64-linux-gnu-g++
+ENV AR_x86_64_unknown_linux_gnu=x86_64-linux-gnu-ar
+ENV STRIP_x86_64_unknown_linux_gnu=x86_64-linux-gnu-strip
+ENV BINDGEN_EXTRA_CLANG_ARGS_x86_64_unknown_linux_gnu="-I/usr/include -I/usr/include/x86_64-linux-gnu"
+ENV CFLAGS_x86_64_unknown_linux_gnu="-I/usr/include -I/usr/include/x86_64-linux-gnu"
+ENV CPPFLAGS_x86_64_unknown_linux_gnu="-I/usr/include -I/usr/include/x86_64-linux-gnu"