Fixing ubuntu MPI installation

build.sh

@@ -9,11 +9,11 @@ echo "make target: $4"
 echo "compilation type: $5"
 echo "Branch name: $6"
 
-#if [ x"$3" == x"ubuntu"  ]; then
+if [ x"$3" == x"ubuntu"  ]; then
 #	rm -rf $HOME/openfpm_dependencies/openfpm_pdata/$6/*
 #	./script/install_MPI.sh $HOME/openfpm_dependencies/openfpm_pdata/$6/ 8
-#	export PATH="$HOME/openfpm_dependencies/openfpm_pdata/$6/MPI/bin/:$PATH"
-#fi
+	export PATH="$HOME/openfpm_dependencies/openfpm_pdata/$6/MPI/bin/:$PATH"
+fi
 
 #if [ x"$3" == x"osx"  ]; then
 #        rm -rf $HOME/openfpm_dependencies/openfpm_pdata/$6/OPENBLAS