GNUmakefile

   1 # Having a separate GNUmakefile lets me `include' the dynamically
   2 # generated rules created via Makefile.maint as well as Makefile.maint itself.
   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 program is free software: you can redistribute it and/or modify
  10 # it under the terms of the GNU General Public License as published by
  11 # the Free Software Foundation, either version 3 of the License, or
  12 # (at your option) any later version.
  13
  14 # This program is distributed in the hope that it will be useful,
  15 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  16 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17 # GNU General Public License for more details.
  18
  19 # You should have received a copy of the GNU General Public License
  20 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  21
  22 # Systems where /bin/sh is not the default shell need this.  The $(shell)
  23 # command below won't work with e.g. stock DOS/Windows shells.
  24 ifeq ($(wildcard /bin/s[h]),/bin/sh)
  25 SHELL = /bin/sh
  26 else
  27 # will be used only with the next shell-test line, then overwritten
  28 # by a configured-in value
  29 SHELL = sh
  30 endif
  31
  32 have-Makefile := $(shell test -f Makefile && echo yes)
  33
  34 # If the user runs GNU make but has not yet run ./configure,
  35 # give them a diagnostic.
  36 ifeq ($(have-Makefile),yes)
  37
  38 # Make tar archive easier to reproduce.
  39 export TAR_OPTIONS = --owner=0 --group=0 --numeric-owner
  40
  41 include Makefile
  42
  43 # Ensure that $(VERSION) is up to date for dist-related targets, but not
  44 # for others: rerunning autoconf and recompiling everything isn't cheap.
  45 ifeq (0,$(MAKELEVEL))
  46   _is-dist-target = $(filter dist% alpha beta major,$(MAKECMDGOALS))
  47   ifneq (,$(_is-dist-target))
  48     _curr-ver := $(shell build-aux/git-version-gen .version)
  49     ifneq ($(_curr-ver),$(VERSION))
  50       $(info INFO: rerunning autoconf for new version string: $(_curr-ver))
  51       dummy := $(shell rm -rf autom4te.cache; $(AUTOCONF))
  52     endif
  53   endif
  54 endif
  55
  56 include $(srcdir)/Makefile.cfg
  57 include $(srcdir)/Makefile.maint
  58
  59 else
  60
  61 all:
  62         @echo There seems to be no Makefile in this directory.   1>&2
  63         @echo "You must run ./configure before running \`make'." 1>&2
  64         @exit 1
  65
  66 endif
  67
  68 # Tell version 3.79 and up of GNU make to not build goals in this
  69 # directory in parallel.  This is necessary in case someone tries to
  70 # build multiple targets on one command line.
  71 .NOTPARALLEL: