GNUmakefile

   1 # Having a separate GNUmakefile lets me `include' both Makefile.maint
   2 # and Makefile.
   3 # This makefile is used only if you run GNU Make.
   4 # It is necessary if you want to build targets usually of interest
   5 # only to the maintainer.
   6
   7 # Copyright (C) 2001, 2003, 2006, 2007 Free Software Foundation, Inc.
   8 #
   9 # This file is part of GNU M4.
  10 #
  11 # GNU M4 is free software: you can redistribute it and/or modify
  12 # it under the terms of the GNU General Public License as published by
  13 # the Free Software Foundation, either version 3 of the License, or
  14 # (at your option) any later version.
  15 #
  16 # GNU M4 is distributed in the hope that it will be useful,
  17 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  18 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19 # GNU General Public License for more details.
  20 #
  21 # You should have received a copy of the GNU General Public License
  22 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  23
  24 # Systems where /bin/sh is not the default shell need this.  The $(shell)
  25 # command below won't work with e.g. stock DOS/Windows shells.
  26 ifeq ($(wildcard /bin/s[h]),/bin/sh)
  27 SHELL = /bin/sh
  28 else
  29 # will be used only with the next shell-test line, then overwritten
  30 # by a configured-in value
  31 SHELL = sh
  32 endif
  33
  34 have-Makefile := $(shell test -f Makefile && echo yes)
  35
  36 # If the user runs GNU make but has not yet run ./configure,
  37 # give them a diagnostic.
  38 ifeq ($(have-Makefile),yes)
  39
  40 # Make tar archive easier to reproduce.
  41 export TAR_OPTIONS = --owner=0 --group=0 --numeric-owner
  42
  43 include Makefile
  44 include $(srcdir)/Makefile.maint
  45
  46 else
  47
  48 all:
  49         @echo There seems to be no Makefile in this directory.   1>&2
  50         @echo "You must run ./configure before running \`make'." 1>&2
  51         @exit 1
  52
  53 endif
  54
  55 # Tell version 3.79 and up of GNU make to not build goals in this
  56 # directory in parallel.  This is necessary in case someone tries to
  57 # build multiple targets on one command line.
  58 .NOTPARALLEL: