| # |
| # Copyright 2016 RIFT.IO Inc |
| # |
| # Licensed under the Apache License, Version 2.0 (the "License"); |
| # you may not use this file except in compliance with the License. |
| # You may obtain a copy of the License at |
| # |
| # http://www.apache.org/licenses/LICENSE-2.0 |
| # |
| # Unless required by applicable law or agreed to in writing, software |
| # distributed under the License is distributed on an "AS IS" BASIS, |
| # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| # See the License for the specific language governing permissions and |
| # limitations under the License. |
| # |
| # Author(s): Tim Mortsolf |
| # Creation Date: 05/22/2013 |
| # |
| |
| ## |
| # Define a Makefile function: find_upwards(filename) |
| # |
| # Searches for a file of the given name in the directory ., .., ../.., ../../.., etc., |
| # until the file is found or the root directory is reached |
| ## |
| find_upward = $(word 1, $(shell while [ `pwd` != / ] ; do find `pwd` -maxdepth 1 -name $1 ; cd .. ; done)) |
| |
| ## |
| # Call find_upward("Makefile.top") to find the nearest upwards adjacent Makefile.top |
| ## |
| makefile.top := $(call find_upward, "Makefile.top") |
| |
| ## |
| # If Makefile.top was found, then include it |
| ## |
| include $(makefile.top) |