Update cmake command for installing grpc

get-packages.sh

@@ -30,15 +30,11 @@ function main()
 	if [[ -d $here_dir/third-party/grpc ]]; then
 		cd $here_dir/third-party/grpc
 		if [[ ! -x third_party/protobuf/src/protoc ]] && [[ ! -x /usr/local/bin/protoc ]] ; then
-			if [[ ! -f Makefile ]]; then
-				cmake -DgRPC_INSTALL=ON -DCMAKE_INSTALL_PREFIX=/usr/local .
-			fi
+			mkdir cmake_build
+			cd cmake_build
+			cmake -DgRPC_INSTALL=ON -DCMAKE_INSTALL_PREFIX=/usr/local ..
 			make -j 3
 			sudo make install
-
-			cd $here_dir/third-party/grpc
-			pwd
-			sudo make install
 		fi
 
 		cd $here_dir