FROM linuxkit/alpine-build-kernel:cfdd576c36a52ed2dd62f237f79eeedc2dd3697b@sha256:3fe08db373a9373ba1616a485858f01ebd2d7a3cb364a099d0ed8b45fa419da2 ARG KERNEL_VERSION ARG DEBUG=0 ENV KERNEL_SOURCE=https://www.kernel.org/pub/linux/kernel/v4.x/linux-${KERNEL_VERSION}.tar.xz # Download kernel source code RUN curl -fsSL -o linux-${KERNEL_VERSION}.tar.xz ${KERNEL_SOURCE} RUN tar xf linux-${KERNEL_VERSION}.tar.xz && mv /linux-${KERNEL_VERSION} /linux WORKDIR /linux ENV DEF_CONFIG_FILE=/linux/arch/x86/configs/x86_64_defconfig COPY kernel_config ${DEF_CONFIG_FILE} COPY kernel_config.debug /linux/debug_config # Enable debug RUN if [ $DEBUG -ne "0" ]; then \ sed -i 's/CONFIG_PANIC_ON_OOPS=y/# CONFIG_PANIC_ON_OOPS is not set/' \ ${DEF_CONFIG_FILE}; \ cat /linux/debug_config >> ${DEF_CONFIG_FILE}; \ fi RUN cat ${DEF_CONFIG_FILE} # Apply local patches COPY patches-4.9 /patches RUN cd /linux && \ set -e && for patch in /patches/*.patch; do \ echo "Applying $patch"; \ patch -p1 < "$patch"; \ done # Build kernel RUN make defconfig && \ make oldconfig && \ perl -p -i -e "s/^EXTRAVERSION.*/EXTRAVERSION = -linuxkit/" Makefile && \ make -j "$(getconf _NPROCESSORS_ONLN)" KCFLAGS="-fno-pie" #bzImage #vmlinux RUN cp vmlinux arch/x86_64/boot/bzImage / # CC does not provide modules, not needed to distribute headers. #kernel-headers.tar: provides kernel headers RUN mkdir -p /tmp/kernel-headers/usr && \ cd /tmp/kernel-headers && tar cf /kernel-headers.tar usr # CC does no use modules do not ship it #kernel-modules.tar: provides kernel modules RUN mkdir -p /tmp/kernel-modules/lib/modules && \ cd /tmp/kernel-modules && tar cf /kernel-modules.tar lib WORKDIR / #kernel-dev.tar: provides headers .config linux/include arch/x86/include RUN mkdir -p /tmp/usr/src/linux-headers && \ cd /tmp/ && tar cf /kernel-dev.tar usr/src RUN printf "KERNEL_SOURCE=${KERNEL_SOURCE}\n" > /kernel-source-info