singularity installer script

install

@@ -0,0 +1,94 @@
+#!/bin/bash
+
+# This script install singularity 
+
+function print_usage () {
+	echo "This script download singularity, compile and installs it"
+	echo "root prividge is needed as some files need to be installed with suid.  eg:"
+	echo "sudo ./install will install to /usr/local/singularity-\$BUILD"
+	echo "sudo ./install --prefix=/opt --build=2.4.alpha will install to /opt/singularity-2.4.alpha"
+}
+
+### process command line arguments ###
+# option parsing ref: 
+# https://stackoverflow.com/questions/192249/how-do-i-parse-command-line-arguments-in-bash
+for i in "$@"; do
+	case $i in 
+		-p=*|--prefix=*)
+			PREFIX="${i#*=}"
+			shift # past argument=value
+			;;
+		-b=*|--build=*)
+			#BUILD="${i#*=}"
+			BUILD="${i#*=}"
+			shift # past argument=value
+			;;
+		-h|--help)
+			print_usage
+			exit 255
+			;;
+		*)
+			echo "Unknown argument.  Use -h for help"
+			exit 255
+			;;
+	esac
+done
+
+
+
+### actual install ###
+
+PREFIX="${PREFIX:-/usr/local}"				# default install to /usr/local unless otherwise specified
+#VER="{VER:-}"
+if [[ x${BUILD} == "x" ]] ; then
+	BUILD=$(date "+%Y.%m%d")
+fi
+INSTALLDIR=${PREFIX}/singularity-${BUILD} 
+
+echo "This script install singularity to ${INSTALLDIR}"
+echo "Press ^C in the next 15 seconds to cancel"
+sleep 15
+#echo "Press ^C to cancel or the ANY key to continue..."
+#read CONFIRM
+echo "installing..."
+
+
+
+if [[ ! -d ${INSTALLDIR} ]]; then
+ 	mkdir -p ${INSTALLDIR} 
+	EXITCODE=$?
+	if [[ $EXITCODE -gt 0 ]]; then
+		echo "Unable to create ${INSTALLDIR}.  Exiting."
+		exit $EXITCODE
+	fi
+fi
+
+GITSOURCE=${INSTALLDIR}/github
+if [[ ! -d ${GITSOURCE} ]] ; then
+	# singularity never pulled from github, setting it up now
+	mkdir ${GITSOURCE}
+	cd    ${GITSOURCE}
+	git clone https://github.com/singularityware/singularity.git
+else
+	# update code before install
+	cd    ${GITSOURCE}/singularity
+	git pull
+fi
+
+cd    ${GITSOURCE}/singularity
+./autogen.sh
+EXITCODE=$?
+if [[ $EXITCODE -gt 0 ]]; then
+	echo "autogen didn't work correctly.  "
+	echo "Please make sure the following packages are installed: libtool automake autoconf"
+	exit $EXITCODE
+fi
+./configure --prefix=${INSTALLDIR}
+make
+sudo make install
+EXITCODE=$?
+if [[ $EXITCODE -eq 0 ]]; then
+	echo "Done.  Singularity installed to ${INSTALLDIR}."
+else
+	echo "Something didn't go right, Singularity install exits with ${EXITCODE}."
+fi