test

        make install

        # Install Linux kernel headers into musl sysroot

        cd /tmp

        KERNEL_VERSION=\$(apt-cache show linux-headers-amd64 2>/dev/null | grep Depends | head -1 | grep -oP '[0-9]+\.[0-9]+' | head -1 || echo '6.1')

        apt-get install -y --no-install-recommends linux-libc-dev

        cp -a /usr/include/linux /usr/local/musl/include/

        cp -a /usr/include/asm-generic /usr/local/musl/include/

        cp -a /usr/include/x86_64-linux-gnu/asm /usr/local/musl/include/ 2>/dev/null || \

        # Debian stores arch-specific headers under multiarch path

        if [ -d /usr/include/x86_64-linux-gnu/asm ]; then

            cp -a /usr/include/x86_64-linux-gnu/asm /usr/local/musl/include/

        elif [ -d /usr/include/asm ]; then

            cp -a /usr/include/asm /usr/local/musl/include/

        else

            # Generate minimal asm headers from asm-generic

            mkdir -p /usr/local/musl/include/asm

            for f in /usr/local/musl/include/asm-generic/*.h; do

                name=\$(basename \$f)

                echo \"#include <asm-generic/\${name}>\" > /usr/local/musl/include/asm/\${name}

            done

        fi

        # Build libc++, libc++abi and libunwind against musl from LLVM source

        # LLVM 18 requires the unified runtimes build