2 # Copyright 2016 RIFT.IO Inc
4 # Licensed under the Apache License, Version 2.0 (the "License");
5 # you may not use this file except in compliance with the License.
6 # You may obtain a copy of the License at
8 # http://www.apache.org/licenses/LICENSE-2.0
10 # Unless required by applicable law or agreed to in writing, software
11 # distributed under the License is distributed on an "AS IS" BASIS,
12 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 # See the License for the specific language governing permissions and
14 # limitations under the License.
16 # Author(s): Tim Mortsolf
17 # Creation Date: 11/25/2013
21 # Define a Makefile function: find_upwards(filename)
23 # Searches for a file of the given name in the directory ., .., ../.., ../../.., etc.,
24 # until the file is found or the root directory is reached
26 find_upward
= $(word 1, $(shell while
[ `pwd` != / ] ; do find
`pwd` -maxdepth
1 -name
$1 ; cd ..
; done
))
29 # Call find_upward("Makefile.top") to find the nearest upwards adjacent Makefile.top
31 makefile.top
:= $(call find_upward
, "Makefile.top")
34 # If Makefile.top was found, then include it
36 include $(makefile.top
)