first commit

docker/Dockerfile.template

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+FROM alpine:3.14 AS stage
+ARG PLATFORMS="@@@PLATFORMS@@@"
+ARG TOOLKIT_VER="@@@TOOLKIT_VER@@@"
+
+# Copy downloaded toolkits
+ADD cache /cache
+# Extract toolkits
+RUN for V in ${PLATFORMS}; do \
+      echo "${V}" | while IFS=':' read PLATFORM KVER; do \
+        echo "Extracting ds.${PLATFORM}-${TOOLKIT_VER}.dev.txz" && \
+        mkdir "/opt/${PLATFORM}" && \
+        tar -xaf "/cache/ds.${PLATFORM}-${TOOLKIT_VER}.dev.txz" -C "/opt/${PLATFORM}" --strip-components=10 \
+          "usr/local/x86_64-pc-linux-gnu/x86_64-pc-linux-gnu/sys-root/usr/lib/modules/DSM-7.0/build" && \
+        echo -e "${PLATFORM}\t${KVER}" >> /opt/platforms; \
+      done; \
+    done
+
+# Final image
+FROM debian:8-slim
+ENV SHELL=/bin/bash \
+    ARCH=x86_64
+
+RUN apt update --yes && \
+    apt install --yes --no-install-recommends --no-install-suggests \
+      build-essential nano make && \
+    apt-get clean && \
+    rm -rf /var/lib/apt/lists/*
+
+COPY --from=stage /opt /opt
+COPY files/ /
+
+WORKDIR /input
+VOLUME /input /output
+
+ENTRYPOINT ["/opt/do.sh"]

docker/build.sh

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+#!/usr/bin/env bash
+
+###############################################################################
+function trap_cancel() {
+    echo "Press Control+C once more terminate the process (or wait 2s for it to restart)"
+    sleep 2 || exit 1
+}
+trap trap_cancel SIGINT SIGTERM
+
+# Read platforms/kerver version
+echo "Reading platforms"
+declare -A PLATFORMS
+while read PLATFORM KVER; do
+  PLATFORMS[${PLATFORM}]="${KVER}"
+done <../PLATFORMS
+
+# Download toolkits
+TOOLKIT_VER="7.0"
+for PLATFORM in ${!PLATFORMS[@]}; do
+  echo -n "Checking cache/ds.${PLATFORM}-${TOOLKIT_VER}.dev.txz... "
+  if [ ! -f "cache/ds.${PLATFORM}-${TOOLKIT_VER}.dev.txz" ]; then
+    URL="https://global.download.synology.com/download/ToolChain/toolkit/${TOOLKIT_VER}/${PLATFORM}/ds.${PLATFORM}-${TOOLKIT_VER}.dev.txz"
+    echo "Downloading ${URL}"
+    curl -L "${URL}" -o "cache/ds.${PLATFORM}-${TOOLKIT_VER}.dev.txz"
+  else
+    echo "OK"
+  fi
+done
+
+# Generate Dockerfile
+echo "Generating Dockerfile"
+cp Dockerfile.template Dockerfile
+VALUE=""
+for PLATFORM in ${!PLATFORMS[@]}; do
+  VALUE+="${PLATFORM}:${PLATFORMS[${PLATFORM}]} "
+done
+sed -i "s|@@@PLATFORMS@@@|${VALUE::-1}|g" Dockerfile
+sed -i "s|@@@TOOLKIT_VER@@@|${TOOLKIT_VER}|g" Dockerfile
+
+# Build
+echo "Building... Drink a coffee and wait!"
+docker image rm syno-compiler >/dev/null 2>&1
+docker buildx build . --load --tag syno-compiler

docker/files/etc/profile.d/login.sh

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+[[ "$-" != *i* ]] && return
+export LS_OPTIONS='--color=auto'
+export SHELL='linux'
+eval "`dircolors`"
+alias ls='ls -F -h --color=always -v --author --time-style=long-iso'
+alias ll='ls -l'
+alias l='ls -l -a'
+alias h='history 25'
+alias j='jobs -l'

docker/files/opt/do.sh

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+#!/usr/bin/env bash
+
+function compile-module {
+  # Validate
+  if [ -z "${1}" ]; then
+    echo "Use: compile-module <platform>"
+    exit 1
+  fi
+  VALID=0
+  while read PLATFORM KVER; do
+    if [ "${PLATFORM}" = "${1}" ]; then
+      VALID=1
+      break
+    fi
+  done </opt/platforms
+  if [ $VALID -eq 0 ]; then
+    echo "Platform ${PLATFORM} not found."
+    exit 1
+  fi
+  echo "Compiling module for ${PLATFORM}-${KVER}..."
+  cp -R /input /tmp
+  make -C "/opt/${PLATFORM}" M="/tmp/input" modules
+  while read F; do
+    strip -g "${F}"
+    echo "Copying `basename ${F}`"
+    cp "${F}" "/output"
+  done < <(find /tmp/input -name \*.ko)
+}
+
+function compile-lkm {
+  PLATFORM=${1}
+  if [ -z "${PLATFORM}" ]; then
+    echo "Use: compile-lkm <platform>"
+    exit 1
+  fi
+  cp -R /input /tmp
+  make -C "/tmp/input" LINUX_SRC="/opt/${PLATFORM}" dev-v7
+  strip -g "/tmp/input/redpill.ko"
+  mv "/tmp/input/redpill.ko" "/output/redpill-dev.ko"
+  make -C "/tmp/input" LINUX_SRC="/opt/${PLATFORM}" clean
+  make -C "/tmp/input" LINUX_SRC="/opt/${PLATFORM}" prod-v7
+  strip -g "/tmp/input/redpill.ko"
+  mv "/tmp/input/redpill.ko" "/output/redpill-prod.ko"
+}
+
+if [ $# -lt 1 ]; then
+  echo "Use: <command> (<params>)"
+  exit 1
+fi
+case $1 in
+  bash) bash -l ;;
+  compile-module) compile-module $2 ;;
+  compile-lkm) compile-lkm $2 ;;
+  *) echo "Command not recognized: $1" ;;
+esac