Merge pull request containers#19 from slp/helper_script

slp · web-flow · commit d4dd146d74c0 · 2021-01-27T12:37:41.000+01:00
Add a helper script for building init/init on krunvm
diff --git a/build_on_krunvm.sh b/build_on_krunvm.sh
@@ -0,0 +1,41 @@
+#!/bin/sh
+
+# This is a helper script for building init/init (a Linux ELF binary) in
+# a lightweight VM using krunvm.
+
+KRUNVM=`which krunvm`
+if [ -z "$KRUNVM" ]; then
+	echo "Couldn't find krunvm binary"
+	exit -1
+fi
+
+SCRIPTPATH=`realpath $0`
+WORKDIR=`dirname $SCRIPTPATH`
+krunvm create fedora --name libkrun-builder -v $WORKDIR:/work -w /work
+if [ $? != 0 ]; then
+	echo "Error creating lightweight VM"
+	exit -1
+fi
+
+krunvm start libkrun-builder /usr/bin/dnf -- install -y glibc-static gcc make
+if [ $? != 0 ]; then
+    krunvm delete libkrun-builder
+	echo "Error running command on VM"
+	exit -1
+fi
+
+krunvm start libkrun-builder /usr/bin/make -- init/init
+if [ $? != 0 ]; then
+    krunvm delete libkrun-builder
+	echo "Error running command on VM"
+	exit -1
+fi
+
+krunvm delete libkrun-builder
+
+if [ ! -e "init/init" ]; then
+	echo "There was a problem building init/init in the VM"
+	exit -1
+fi
+
+exit 0
