1 # Determine whether recent-enough GNU Make is being used.
3 # Copyright (C) 2007, 2009-2017 Free Software Foundation, Inc.
5 # This file is free software; the Free Software Foundation
6 # gives unlimited permission to copy and/or distribute it,
7 # with or without modifications, as long as this notice is preserved.
9 # Written by Paul Eggert.
11 # Set GNU_MAKE if we are using a recent-enough version of GNU make.
13 # Use --version AND trailing junk, because SGI Make doesn't fail on --version.
15 AC_DEFUN([gl_GNU_MAKE],
17 AM_CONDITIONAL([GNU_MAKE],
18 [${MAKE-make} --version /cannot/make/this >/dev/null 2>&1])