Don't assume make is gmake

          --- old/tests/Makefile
          +++ new/tests/Makefile

   1    1  #
   2    2  # Copyright 2014 Amazon.com, Inc. or its affiliates. All Rights Reserved.
   3    3  #
   4    4  # Licensed under the Apache License, Version 2.0 (the "License").
   5    5  # You may not use this file except in compliance with the License.
   6    6  # A copy of the License is located at

   7    7  #
   8    8  #  http://aws.amazon.com/apache2.0
   9    9  #
  10   10  # or in the "license" file accompanying this file. This file is distributed
  11   11  # on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
  12   12  # express or implied. See the License for the specific language governing
  13   13  # permissions and limitations under the License.
  14   14  #
  15   15  
  16   16  all:
  17      -        make -C testlib
  18      -        make -C unit
       17 +        $(MAKE) -C testlib
       18 +        $(MAKE) -C unit
  19   19  
  20   20  include ../s2n.mk
  21   21  
  22   22  clean:
  23      -        make -C testlib decruft
  24      -        make -C unit decruft
       23 +        $(MAKE) -C testlib decruft
       24 +        $(MAKE) -C unit decruft
    

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