Hmm, can't build crosstool-ng yet.

test/cmake/aarch64-linux-gnu.cmake

@@ -0,0 +1,21 @@
+set(CMAKE_SYSTEM_NAME Linux)
+set(CMAKE_SYSTEM_PROCESSOR aarch64)
+
+# Specify the cross compilers
+set(CMAKE_C_COMPILER /opt/cross/bin/aarch64-unknown-linux-musl-gcc)
+set(CMAKE_CXX_COMPILER /opt/cross/bin/aarch64-unknown-linux-musl-g++)
+
+# Where is the target environment
+set(CMAKE_FIND_ROOT_PATH /opt/cross/aarch64-unknown-linux-musl)
+
+# Search for programs in the build host directories
+set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
+
+# Search for libraries and headers in the target directories
+set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
+set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
+set(CMAKE_FIND_ROOT_PATH_MODE_PACKAGE ONLY)
+
+# Set compiler flags
+set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -march=armv8-a")
+set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -march=armv8-a") 

test/crossbuild.sh

@@ -0,0 +1,34 @@
+#!/bin/bash
+
+TARGET_ARCH="aarch64"
+OUTDIR="output-${TARGET_ARCH}"
+
+# Create volume if it doesn't exist
+docker volume create cppbuild-cache-${TARGET_ARCH}
+
+# Build command to run in the container
+BUILD_COMMAND="mkdir -p /app/build && \
+        cd /app/build && \
+        cmake -G Ninja \
+        -DCMAKE_TOOLCHAIN_FILE=/app/src/cmake/${TARGET_ARCH}-linux-gnu.cmake \
+        /app/src && \
+        ninja -j$(nproc) && \
+        mkdir -p /app/src/$OUTDIR && \
+        cp /app/build/ipdemo /app/src/$OUTDIR/ipdemo && \
+        chown -R $(id -u):$(id -g) /app/src/$OUTDIR"
+
+# Run the build in the container
+docker run --rm \
+    -v cppbuild-cache-${TARGET_ARCH}:/app/build \
+    -v $(pwd):/app/src \
+    -w /app/src \
+    -e CCACHE_DIR=/app/build/.ccache \
+    -e CC="ccache /opt/cross/bin/aarch64-unknown-linux-musl-gcc" \
+    -e CXX="ccache /opt/cross/bin/aarch64-unknown-linux-musl-g++" \
+    -e LD=mold \
+    -e CMAKE_BUILD_PARALLEL_LEVEL=$(nproc) \
+    -e NINJA_STATUS="[%f/%t] " \
+    cpp-httplib-builder:latest \
+    -c "$BUILD_COMMAND"
+
+echo "Build completed. Output is in $OUTDIR directory"