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 # Build with our own versions of these tools, when possible.
  42 export PATH = $(shell echo "`pwd`/tests:$$PATH")
  43
  44 include Makefile
  45
  46 # Ensure that $(VERSION) is up to date for dist-related targets, but not
  47 # for others: rerunning autoconf and recompiling everything isn't cheap.
  48 # The $(MAKE) clean is required, to remove all traces of the previous
  49 # version string, which would otherwise cause a few test failures.
  50 # Remove the autoreconf-provided INSTALL, so that we regenerate it.
  51 ifeq (0,$(MAKELEVEL))
  52   _is-dist-target = $(filter dist% alpha beta major,$(MAKECMDGOALS))
  53   ifneq (,$(_is-dist-target))
  54     _curr-ver := $(shell $(srcdir)/build-aux/git-version-gen $(srcdir) .version)
  55     ifneq ($(_curr-ver),$(VERSION))
  56       $(info INFO: running autoreconf for new version string; old: $(_curr-ver))
  57       dummy := $(shell                          \
  58         rm -rf autom4te.cache;                  \
  59         (cd $(srcdir) && autoreconf -i -v)      \
  60           && $(MAKE) clean                      \
  61           && rm -f INSTALL)
  62     endif
  63   endif
  64 endif
  65
  66 include $(srcdir)/Makefile.cfg
  67 include $(srcdir)/Makefile.maint
  68
  69 else
  70
  71 all:
  72         @echo There seems to be no Makefile in this directory.   1>&2
  73         @echo "You must run ./configure before running \`make'." 1>&2
  74         @exit 1
  75
  76 endif
  77
  78 # Tell version 3.79 and up of GNU make to not build goals in this
  79 # directory in parallel.  This is necessary in case someone tries to
  80 # build multiple targets on one command line.
  81 .NOTPARALLEL: