fix: added missing script for mainline aarch64

Signed-off-by: Roberto Scolaro <roberto.scolaro21@gmail.com>

images/generated-images/Dockerfile

@@ -1,20 +1,29 @@
+FROM mainline-src as mainline-src
 FROM ubuntu:bionic
 
 ARG DEBIAN_FRONTEND=noninteractive
 
 WORKDIR /home/ubuntu
 
+COPY /*.deb /home/ubuntu/
+COPY /version /home/ubuntu/
+COPY --from=mainline-src /mainline-src/ /home/ubuntu/mainline-src/
+
 RUN apt-get update && apt-get install -y \
+		bc \
+		bison \
 		build-essential \
 		clang \
 		curl \
 		dbus \
+		flex \
 		git \
 		iproute2 \
 		iputils-ping \
 		kmod \
 		libcap-dev \
 		libelf-dev \
+		libssl-dev \
 		llvm \
 		net-tools \
 		openssh-server \
@@ -24,20 +33,29 @@ RUN apt-get update && apt-get install -y \
 		systemd \
 		udev \
 		wget && \
+	apt-get install -y '^gcc-[0-9]*$' && \
 	curl -LO https://cmake.org/files/v3.19/cmake-3.19.8-Linux-$(uname -m).tar.gz && \
 	tar -xaf cmake-3.19.8-Linux-$(uname -m).tar.gz && \
 	rm -vf cmake-3.19.8-Linux-$(uname -m).tar.gz && \
 	mv cmake-3.19.8-Linux-$(uname -m) /opt/cmake-3.19.8 && \
-	ln -sf  /opt/cmake-3.19.8/bin/*   /usr/bin/
-
-COPY /* /home/ubuntu/
-
-RUN apt install -y --fix-broken ./*.deb || exit 1 && \
+	ln -sf  /opt/cmake-3.19.8/bin/*   /usr/bin/ && \
+	apt install -y --fix-broken ./*.deb || exit 1 && \
 	apt-get clean && \
 	rm -rf /var/lib/apt/lists/* && \
-	rm -v ./*.deb && \
+	rm -v ./*.deb Dockerfile* && \
 	find /lib/modules -name '*.ko' -delete ; \
+	cd mainline-src && \
+	git config --global user.name "user" && \
+	git config --global user.email "user@example.com" && \
+	git checkout cod/mainline/$(cat /home/ubuntu/version) && \
+	cp /lib/modules/$(ls /lib/modules/ | head -1)/build/.config . && \
+	make prepare0 && \
+	rm -rf /lib/modules/$(ls /lib/modules/ | head -1)/build/scripts && \
+	cp -rf scripts /lib/modules/$(ls /lib/modules/ | head -1)/build/ && \
+	cd .. && \
+	rm -rf mainline-src && \
 	echo "" > /etc/machine-id && echo "" > /var/lib/dbus/machine-id && \
+	sed -ie '/^ConditionVirtualization.*/d' /lib/systemd/system/systemd-timesyncd.service ; \
 	sed -i -e 's/^AcceptEnv LANG LC_\*$/#AcceptEnv LANG LC_*/' /etc/ssh/sshd_config && \
 	echo 'UseDNS no' >> /etc/ssh/sshd_config && \
 	echo "root:root" | chpasswd

images/generated-images/Dockerfile.source

@@ -0,0 +1,3 @@
+FROM scratch
+
+COPY /mainline-src/ /mainline-src/

images/generated-images/mainline.sh

@@ -40,3 +40,16 @@ cd ../../..
 
 cp Makefile generated/
 ls generated/$CANONARCH/mainline | xargs -I@ cp Dockerfile Dockerfile.kernel generated/$CANONARCH/mainline/@
+
+# ubuntu mainline packages provide wrong scripts to build drivers: we need to add the source code
+# to recompile those scripts and be able to compile kernel modules.
+if [[ -d generated/aarch64 ]] ; then
+	[[ ! -d mainline-src ]] && \
+		git clone git://git.launchpad.net/~ubuntu-kernel-test/ubuntu/+source/linux/+git/mainline-crack mainline-src
+	find Dockerfile generated/aarch64 -name Dockerfile | sed 's/Dockerfile//g' | sed '/^$/d' | \
+		while read DIR; do
+			VERSION=$(echo $DIR | rev | cut -d/ -f2 | rev)
+			echo $VERSION > ${DIR}/version
+		done
+	docker build -t mainline-src -f Dockerfile.source .
+fi