From 2701f10c909dee234185ddf082728fd661b941de Mon Sep 17 00:00:00 2001
From: Serge Schneider <serge@raspberrypi.org>
Date: Mon, 11 Apr 2016 07:21:07 +0100
Subject: [PATCH] Initial build script

---
 build.sh       | 162 +++++++++++++++++++++++++++++++++++++++++++++++++
 scripts/common |  64 +++++++++++++++++++
 2 files changed, 226 insertions(+)

diff --git a/build.sh b/build.sh
index e69de29..e3f7a6e 100755
--- a/build.sh
+++ b/build.sh
@@ -0,0 +1,162 @@
+#!/bin/bash -e
+
+run_sub_stage()
+{
+	log "Begin ${SUB_STAGE_DIR}"
+	pushd ${SUB_STAGE_DIR} > /dev/null
+	for i in {00..99}; do
+		if [ -f ${i}-debconf ]; then
+			log "Begin ${SUB_STAGE_DIR}/${i}-debconf"
+			on_chroot sh -e - << EOF
+debconf-set-selections <<SELEOF
+`cat ${i}-debconf`
+SELEOF
+EOF
+		log "End ${SUB_STAGE_DIR}/${i}-debconf"
+		fi
+		if [ -f ${i}-packages-nr ]; then
+			log "Begin ${SUB_STAGE_DIR}/${i}-packages-nr"
+			PACKAGES=`cat $i-packages-nr | tr '\n' ' '`
+			if [ -n "$PACKAGES" ]; then
+				on_chroot sh -e - << EOF
+apt-get install --no-install-recommends -y $PACKAGES
+EOF
+			fi
+			log "End ${SUB_STAGE_DIR}/${i}-packages-nr"
+		fi
+		if [ -f ${i}-packages ]; then
+			log "Begin ${SUB_STAGE_DIR}/${i}-packages"
+			PACKAGES=`cat $i-packages | tr '\n' ' '`
+			if [ -n "$PACKAGES" ]; then
+				on_chroot sh -e - << EOF
+apt-get install -y $PACKAGES
+EOF
+			fi
+			log "End ${SUB_STAGE_DIR}/${i}-packages"
+		fi
+		if [ -d ${i}-patches ]; then
+			log "Begin ${SUB_STAGE_DIR}/${i}-patches"
+			pushd ${STAGE_WORK_DIR} > /dev/null
+			if [ "${CLEAN}" = "1" ]; then
+				rm -rf .pc
+				rm -rf *-pc
+			fi
+			QUILT_PATCHES=${SUB_STAGE_DIR}/${i}-patches
+			mkdir -p ${i}-pc
+			ln -sf .pc ${i}-pc
+			if [ -e ${SUB_STAGE_DIR}/${i}-patches/EDIT ]; then
+				echo "Dropping into bash to edit patches..."
+				bash
+			fi
+			RC=0
+			quilt push -a || RC=$?
+			case "$RC" in
+				0|2)
+					;;
+				*)
+					false
+					;;
+			esac
+			popd > /dev/null
+			log "End ${SUB_STAGE_DIR}/${i}-patches"
+		fi
+		if [ -x ${i}-run.sh ]; then
+			log "Begin ${SUB_STAGE_DIR}/${i}-run.sh"
+			./${i}-run.sh
+			log "End ${SUB_STAGE_DIR}/${i}-run.sh"
+		fi
+		if [ -f ${i}-run-chroot ]; then
+			log "Begin ${SUB_STAGE_DIR}/${i}-run-chroot"
+			on_chroot sh -e - < ${i}-run-chroot
+			log "End ${SUB_STAGE_DIR}/${i}-run-chroot"
+		fi
+	done
+	popd > /dev/null
+	log "End ${SUB_STAGE_DIR}"
+}
+
+run_stage(){
+	log "Begin ${STAGE_DIR}"
+	pushd ${STAGE_DIR} > /dev/null
+	unmount ${WORK_DIR}/${STAGE}
+	STAGE_WORK_DIR=${WORK_DIR}/${STAGE}
+	ROOTFS_DIR=${STAGE_WORK_DIR}/rootfs
+	if [ ! -f SKIP ]; then
+		if [ "${CLEAN}" = "1" ]; then
+			if [ -d ${ROOTFS_DIR} ]; then
+				rm -rf ${ROOTFS_DIR}
+			fi
+		fi
+		if [ -x prerun.sh ]; then
+			log "Begin ${STAGE_DIR}/prerun.sh"
+			./prerun.sh
+			log "End ${STAGE_DIR}/prerun.sh"
+		fi
+		for SUB_STAGE_DIR in ${STAGE_DIR}/*; do
+			if [ -d ${SUB_STAGE_DIR} ]; then
+				run_sub_stage
+			fi
+		done
+	fi
+	unmount ${WORK_DIR}/${STAGE}
+	PREV_STAGE=${STAGE}
+	PREV_STAGE_DIR=${STAGE_DIR}
+	PREV_ROOTFS_DIR=${ROOTFS_DIR}
+	popd > /dev/null
+	log "End ${STAGE_DIR}"
+}
+
+if [ "$(id -u)" != "0" ]; then
+	echo "Please run as root" 1>&2
+	exit 1
+fi
+
+if [ -f config ]; then
+	source config
+fi
+
+if [ -z "${IMG_NAME}" ]; then
+	echo "IMG_NAME not set" 1>&2
+	exit 1
+fi
+
+export IMG_DATE=${IMG_DATE:-"$(date -u +%Y-%m-%d)"}
+
+export BASE_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+export SCRIPT_DIR="${BASE_DIR}/scripts"
+export WORK_DIR="${BASE_DIR}/work/${IMG_DATE}-${IMG_NAME}"
+export LOG_FILE="${WORK_DIR}/build.log"
+
+export CLEAN
+export IMG_NAME
+export APT_PROXY
+
+export STAGE
+export PREV_STAGE
+export STAGE_DIR
+export PREV_STAGE_DIR
+export ROOTFS_DIR
+export PREV_ROOTFS_DIR
+
+export QUILT_PATCHES
+export QUILT_NO_DIFF_INDEX=1
+export QUILT_NO_DIFF_TIMESTAMPS=1
+export QUILT_REFRESH_ARGS="-p ab"
+
+source ${SCRIPT_DIR}/common
+export -f log
+export -f bootstrap
+export -f unmount
+export -f on_chroot
+export -f copy_previous
+export -f update_issue
+
+mkdir -p ${WORK_DIR}
+log "Begin ${BASE_DIR}"
+
+for STAGE_DIR in ${BASE_DIR}/stage*; do
+	STAGE=$(basename ${STAGE_DIR})
+	run_stage
+done
+
+log "End ${BASE_DIR}"
diff --git a/scripts/common b/scripts/common
index e69de29..8c0e914 100644
--- a/scripts/common
+++ b/scripts/common
@@ -0,0 +1,64 @@
+log (){
+	date +"[%T] $@" | tee -a ${LOG_FILE}
+}
+
+bootstrap(){
+	ARCH=$(dpkg --print-architecture)
+
+	export http_proxy=${APT_PROXY}
+
+	if [ "$ARCH" !=  "armhf" ]; then
+		BOOTSTRAP_CMD=qemu-debootstrap
+	else
+		BOOTSTRAP_CMD=debootstrap
+	fi
+
+	${BOOTSTRAP_CMD} --components=main,contrib,non-free \
+		--arch armhf\
+		--no-check-gpg \
+		$1 $2 $3
+}
+
+copy_previous(){
+	if [ ! -d ${PREV_ROOTFS_DIR} ]; then
+		echo "Previous stage rootfs not found"
+		false
+	fi
+	mkdir -p ${ROOTFS_DIR}
+	rsync -aHAX ${PREV_ROOTFS_DIR}/ ${ROOTFS_DIR}/
+}
+
+unmount(){
+	if [ -z "$1" ]; then
+		DIR=$PWD
+	else
+		DIR=$1
+	fi
+
+	while mount | grep -q $DIR; do
+		LOCS=`mount | grep $DIR | cut -f 3 -d ' ' | sort -r`
+		for loc in $LOCS; do
+			sudo umount $loc
+		done
+	done
+}
+
+on_chroot() {
+	if ! mount | grep -q `realpath ${ROOTFS_DIR}/proc`; then
+		mount -t proc proc ${ROOTFS_DIR}/proc
+	fi
+
+	if ! mount | grep -q `realpath ${ROOTFS_DIR}/dev`; then
+		mount --bind /dev ${ROOTFS_DIR}/dev
+	fi
+
+	if ! mount | grep -q `realpath ${ROOTFS_DIR}/sys`; then
+		mount --bind /sys ${ROOTFS_DIR}/sys
+	fi
+
+	chroot ${ROOTFS_DIR}/ "$@"
+}
+
+update_issue() {
+	echo -e "Raspberry Pi reference ${DATE}\nGenerated using Pi-gen, https://github.com/RPi-Distro/Pi-gen, ${1}" > ${ROOTFS_DIR}/etc/rpi-issue
+}