Index: /issm/trunk-jpl/externalpackages/gsl/install-greenplanet.sh
===================================================================
--- /issm/trunk-jpl/externalpackages/gsl/install-greenplanet.sh	(revision 14233)
+++ /issm/trunk-jpl/externalpackages/gsl/install-greenplanet.sh	(revision 14233)
@@ -0,0 +1,30 @@
+#!/bin/bash
+set -eu
+
+#Some cleanup
+rm -rf src install gsl-1.15
+mkdir src install
+
+#Download from ISSM server
+$ISSM_DIR/scripts/DownloadExternalPackage.py 'http://issm.jpl.nasa.gov/files/externalpackages/gsl-1.15.tar.gz' 'gsl-1.15.tar.gz'
+
+#Untar 
+tar -zxvf  gsl-1.15.tar.gz
+
+#Move gsl into src directory
+mv gsl-1.15/* src
+rm -rf gsl-1.15
+
+#Configure gsl
+cd src
+
+./configure \
+	--prefix="$ISSM_DIR/externalpackages/gsl/install" 
+
+#Compile gsl
+if [ $# -eq 0 ]; then
+	make
+else
+	make -j $1
+fi
+make install