+ifeq ($(PYTHON),)
+PYTHON_INTERP=python2.7
+else
+PYTHON_INTERP=$(PYTHON)
+endif
+
+$(GET_PIP_SCRIPT):
+ @mkdir -p $(VPP_PYTHON_PREFIX)
+ @bash -c "cd $(VPP_PYTHON_PREFIX) && curl -O https://bootstrap.pypa.io/get-pip.py"
+
+$(PIP_INSTALL_DONE): $(GET_PIP_SCRIPT)
+ @virtualenv $(PYTHON_VENV_PATH) -p $(PYTHON_INTERP)
+ @bash -c "source $(PYTHON_VENV_PATH)/bin/activate && python $(GET_PIP_SCRIPT)"