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, 2008 Free Software Foundation,
   8 # Inc.
   9 #
  10 # This file is part of GNU M4.
  11 #
  12 # GNU M4 is free software: you can redistribute it and/or modify
  13 # it under the terms of the GNU General Public License as published by
  14 # the Free Software Foundation, either version 3 of the License, or
  15 # (at your option) any later version.
  16 #
  17 # GNU M4 is distributed in the hope that it will be useful,
  18 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  19 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  20 # GNU General Public License for more details.
  21 #
  22 # You should have received a copy of the GNU General Public License
  23 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  24
  25 # Systems where /bin/sh is not the default shell need this.  The $(shell)
  26 # command below won't work with e.g. stock DOS/Windows shells.
  27 ifeq ($(wildcard /bin/s[h]),/bin/sh)
  28 SHELL = /bin/sh
  29 else
  30 # will be used only with the next shell-test line, then overwritten
  31 # by a configured-in value
  32 SHELL = sh
  33 endif
  34
  35 _have-Makefile := $(shell test -f Makefile && echo yes)
  36
  37 # If the user runs GNU make but has not yet run ./configure,
  38 # give them a diagnostic.
  39 ifeq ($(_have-Makefile),yes)
  40
  41 # Make tar archive easier to reproduce.
  42 export TAR_OPTIONS = --owner=0 --group=0 --numeric-owner
  43
  44 include Makefile
  45
  46 _curr-ver := $(VERSION)
  47
  48 # Ensure that $(VERSION) is up to date for dist-related targets, but not
  49 # for others: running autoreconf and recompiling everything isn't cheap.
  50 ifeq (0,$(MAKELEVEL))
  51   _is-dist-target = $(filter-out %clean, \
  52     $(filter dist% alpha beta major,$(MAKECMDGOALS)))
  53   ifneq (,$(_is-dist-target))
  54     _curr-ver := $(shell cd $(srcdir) && build-aux/git-version-gen \
  55                    $(srcdir)/.tarball-version)
  56     ifneq ($(_curr-ver),$(VERSION))
  57       $(info INFO: running autoreconf for new version string: $(_curr-ver))
  58       _dummy := $(shell (cd $(srcdir) && rm -rf autom4te.cache && autoreconf))
  59       _created_version_file = 1
  60     endif
  61   endif
  62 endif
  63
  64 ifneq ($(_curr-ver),$(VERSION))
  65   _dummy := $(shell echo $(_curr-ver) > .version)
  66 endif
  67
  68 ifneq ($(_created_version_file),1)
  69   _dummy := $(shell test -f .version || echo $(VERSION) > .version)
  70 endif
  71
  72 include $(srcdir)/Makefile.cfg
  73 include $(srcdir)/Makefile.maint
  74
  75 else
  76
  77 all:
  78         @echo There seems to be no Makefile in this directory.   1>&2
  79         @echo "You must run ./configure before running \`make'." 1>&2
  80         @exit 1
  81
  82 check dist distcheck install: all
  83
  84 endif
  85
  86 # Tell version 3.79 and up of GNU make to not build goals in this
  87 # directory in parallel.  This is necessary in case someone tries to
  88 # build multiple targets on one command line.
  89 .NOTPARALLEL: