Add script to install missing tinyipa dependencies

Squashfs-tools is missing when building the tinyipa image during the
post job, this patch adds a new script to the tinyipa build process that
ensures that missing dependencies get installed as part of the build
process. It also replaces a use of realpath it build-iso.sh where it
should be readlink to ensure that we don't need that dependency.

Change-Id: I9a60dcf42f6a9ba624aa347f0f375bb40432ef77
Closes-Bug: #1567981

imagebuild/tinyipa/Makefile

@@ -1,6 +1,10 @@
-default: build finalise
+.PHONY: default all dependencies build finalise iso clean clean_build clean_iso
+default: dependencies build finalise
 
-all: build finalise iso
+all: dependencies build finalise iso
+
+dependencies:
+	./install-deps.sh
 
 build:
 	./build-tinyipa.sh

imagebuild/tinyipa/build-iso.sh

@@ -1,7 +1,7 @@
 #!/bin/sh
 
 set -ex
-WORKDIR=$(realpath $0 | xargs dirname)
+WORKDIR=$(readlink -f $0 | xargs dirname)
 
 cd $WORKDIR/build_files
 wget -N https://www.kernel.org/pub/linux/utils/boot/syslinux/syslinux-4.06.tar.gz && tar zxf syslinux-4.06.tar.gz

imagebuild/tinyipa/build-tinyipa.sh

@@ -10,6 +10,9 @@ CHROOT_CMD="sudo chroot $BUILDDIR /usr/bin/env -i PATH=$CHROOT_PATH http_proxy=$
 
 TC=1001
 STAFF=50
+
+echo "Building tinyipa:"
+
 # Ensure we have an extended sudo to prevent the need to enter a password over
 # and over again.
 sudo -v

imagebuild/tinyipa/finalise-tinyipa.sh

@@ -13,6 +13,8 @@ CHROOT_PATH="/tmp/overides:/usr/local/sbin:/usr/local/bin:/apps/bin:/usr/sbin:/u
 CHROOT_CMD="sudo chroot $FINALDIR /usr/bin/env -i PATH=$CHROOT_PATH http_proxy=$http_proxy https_proxy=$https_proxy no_proxy=$no_proxy"
 TC_CHROOT_CMD="sudo chroot --userspec=$TC:$STAFF $FINALDIR /usr/bin/env -i PATH=$CHROOT_PATH http_proxy=$http_proxy https_proxy=$https_proxy no_proxy=$no_proxy"
 
+echo "Finalising tinyipa:"
+
 sudo -v
 
 if [ -d "$FINALDIR" ]; then

imagebuild/tinyipa/install-deps.sh

@@ -0,0 +1,17 @@
+#!/bin/bash
+
+PACKAGES="wget python-pip unzip sudo gawk squashfs-tools"
+
+echo "Installing dependencies:"
+
+if [ -x "/usr/bin/apt-get" ]; then
+    sudo -E apt-get update
+    sudo -E apt-get install -y $PACKAGES
+elif [ -x "/usr/bin/dnf" ]; then
+    sudo -E dnf install -y $PACKAGES
+elif [ -x "/usr/bin/yum" ]; then
+    sudo -E yum install -y $PACKAGES
+else
+    echo "No supported package manager installed on system. Supported: apt, yum, dnf"
+    exit 1
+fi