Added Google's Go programming language (golang) as overlay bundle.

src/.config

@@ -135,6 +135,7 @@ OVERLAY_TYPE=folder
 # dropbear       - SSH server and client.
 # felix          - Apache Felix OSGi framework.
 # fio            - I/O load generator.
+# golang         - Google's Go programming language.
 # graalvm        - VM for Java, JavaScript, Python, Ruby, R, LLVM.
 # java           - Oracle JRE or JDK. Manual preparations are required.
 # kbd            - keyboard utilities.

src/README

@@ -63,6 +63,9 @@ Currently available overlay bundles:
                    workloads on RAM or disks. 'fio' is essential for
                    troubleshooting data I/O bottlenecks.
 
+  Golang         - Go is an open source programming language that makes it easy
+                   to build simple, reliable, and efficient software.
+
   GraalVM        - Universal virtual machine for running applications written
                    in JavaScript, Python, Ruby, R, JVM-based languages like
                    Java, Scala, Clojure, Kotlin, and LLVM-based languages such

src/minimal_overlay/bundles/golang/.config

@@ -0,0 +1,5 @@
+# You can find the latest Golang archives here:
+#
+#   http://golang.org/dl
+#
+GOLANG_URL=https://dl.google.com/go/go1.10.3.linux-amd64.tar.gz

src/minimal_overlay/bundles/golang/01_get.sh

@@ -0,0 +1,38 @@
+#!/bin/sh
+
+set -e
+
+. ../../common.sh
+
+# Read the common configuration properties.
+DOWNLOAD_URL=`read_property GOLANG_URL`
+USE_LOCAL_SOURCE=`read_property USE_LOCAL_SOURCE`
+
+# Grab everything after the last '/' character.
+ARCHIVE_FILE=${DOWNLOAD_URL##*/}
+
+if [ "$USE_LOCAL_SOURCE" = "true" -a ! -f $MAIN_SRC_DIR/source/overlay/$ARCHIVE_FILE ] ; then
+  echo "Bundle $MAIN_SRC_DIR/source/overlay/$ARCHIVE_FILE is missing and will be downloaded."
+  USE_LOCAL_SOURCE="false"
+fi
+
+cd $MAIN_SRC_DIR/source/overlay
+
+if [ ! "$USE_LOCAL_SOURCE" = "true" ] ; then
+  # Downloading Golang bundle file. The '-c' option allows the download to resume.
+  echo "Downloading Golang bundle from $DOWNLOAD_URL"
+  wget -c $DOWNLOAD_URL
+else
+  echo "Using local Golang bundle $MAIN_SRC_DIR/source/overlay/$ARCHIVE_FILE"
+fi
+
+# Delete folder with previously extracted Felix.
+echo "Removing Golang work area. This may take a while."
+rm -rf $WORK_DIR/overlay/$BUNDLE_NAME
+mkdir $WORK_DIR/overlay/$BUNDLE_NAME
+
+# Extract Golang to folder 'work/overlay/golang'.
+# Full path will be something like 'work/overlay/golang/go'.
+tar -xvf $ARCHIVE_FILE -C $WORK_DIR/overlay/$BUNDLE_NAME
+
+cd $SRC_DIR

src/minimal_overlay/bundles/golang/02_install.sh

@@ -0,0 +1,32 @@
+#!/bin/sh
+
+set -e
+
+. ../../common.sh
+
+cd $WORK_DIR/overlay/$BUNDLE_NAME
+mv `ls -d *` $BUNDLE_NAME
+
+mkdir opt
+mv $BUNDLE_NAME opt
+
+mkdir -p usr/local
+cd $WORK_DIR/overlay/$BUNDLE_NAME/usr/local
+ln -s ../../opt/$BUNDLE_NAME go
+
+mkdir $WORK_DIR/overlay/$BUNDLE_NAME/bin
+cd $WORK_DIR/overlay/$BUNDLE_NAME/bin
+
+for FILE in $(ls ../usr/local/go/bin)
+do
+  ln -s ../usr/local/go/bin/$FILE $FILE
+done
+
+# With '--remove-destination' all possibly existing soft links in
+# '$OVERLAY_ROOTFS' will be overwritten correctly.
+cp -r --remove-destination $WORK_DIR/overlay/$BUNDLE_NAME/* \
+  $OVERLAY_ROOTFS
+
+echo "Golang has been installed."
+
+cd $SRC_DIR

src/minimal_overlay/bundles/golang/bundle.sh

@@ -0,0 +1,10 @@
+#!/bin/sh
+
+set -e
+
+. ../../common.sh
+
+./01_get.sh
+./02_install.sh
+
+cd $SRC_DIR

src/minimal_overlay/bundles/golang/bundle_deps

@@ -0,0 +1 @@
+glibc_libpthread