X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=top%2FGNUmakefile;h=daba47ae2d66e321da882caccc5f532ba1f283ee;hb=883c82c78f1551ea41d44714c9fa660bf7f56d88;hp=bba62438bcb52120714e945f3462c18445cdab42;hpb=95002d80002acb26000b3c20a2e1a3db929628ae;p=gnulib.git

diff --git a/top/GNUmakefile b/top/GNUmakefile
index bba62438b..daba47ae2 100644
--- a/top/GNUmakefile
+++ b/top/GNUmakefile
@@ -5,7 +5,7 @@
 # It is necessary if you want to build targets usually of interest
 # only to the maintainer.
 
-# Copyright (C) 2001, 2003, 2006-2008 Free Software Foundation, Inc.
+# Copyright (C) 2001, 2003, 2006-2010 Free Software Foundation, Inc.
 
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
@@ -38,6 +38,9 @@ ifeq ($(_have-Makefile),yes)
 # Make tar archive easier to reproduce.
 export TAR_OPTIONS = --owner=0 --group=0 --numeric-owner
 
+# Allow the user to add to this in the Makefile.
+ALL_RECURSIVE_TARGETS =
+
 include Makefile
 
 # Some projects override e.g., _autoreconf here.
@@ -46,25 +49,48 @@ include $(srcdir)/maint.mk
 
 # Allow cfg.mk to override these.
 _build-aux ?= build-aux
-_autoreconf ?= autoreconf
+_autoreconf ?= autoreconf -v
 
 # Ensure that $(VERSION) is up to date for dist-related targets, but not
 # for others: rerunning autoreconf and recompiling everything isn't cheap.
 _have-git-version-gen := \
   $(shell test -f $(srcdir)/$(_build-aux)/git-version-gen && echo yes)
 ifeq ($(_have-git-version-gen)0,yes$(MAKELEVEL))
-  _is-dist-target = $(filter-out %clean, \
+  _is-dist-target ?= $(filter-out %clean, \
     $(filter maintainer-% dist% alpha beta major,$(MAKECMDGOALS)))
-  ifneq (,$(_is-dist-target))
-    _curr-ver := $(shell cd $(srcdir) && ./$(_build-aux)/git-version-gen \
-                   $(srcdir)/.tarball-version)
+  _is-install-target ?= $(filter-out %check, $(filter install%,$(MAKECMDGOALS)))
+  ifneq (,$(_is-dist-target)$(_is-install-target))
+    _curr-ver := $(shell cd $(srcdir) \
+                   && $(_build-aux)/git-version-gen .tarball-version)
     ifneq ($(_curr-ver),$(VERSION))
-      $(info INFO: running autoreconf for new version string: $(_curr-ver))
-      _dummy := $(shell cd $(srcdir) && rm -rf autom4te.cache && $(_autoreconf)))
+      ifeq ($(_curr-ver),UNKNOWN)
+        $(info WARNING: unable to verify if $(VERSION) is the correct version)
+      else
+        ifneq (,$(_is-install-target))
+          # GNU Coding Standards state that 'make install' should not cause
+          # recompilation after 'make all'.  But as long as changing the version
+          # string alters config.h, the cost of having 'make all' always have an
+          # up-to-date version is prohibitive.  So, as a compromise, we merely
+          # warn when installing a version string that is out of date; the user
+          # should run 'autoreconf' (or something like 'make distcheck') to
+          # fix the version, 'make all' to propagate it, then 'make install'.
+          $(info WARNING: version string $(VERSION) is out of date;)
+          $(info run '$(MAKE) _version' to fix it)
+        else
+          $(info INFO: running autoreconf for new version string: $(_curr-ver))
+GNUmakefile: _version
+	touch GNUmakefile
+        endif
+      endif
     endif
   endif
 endif
 
+.PHONY: _version
+_version:
+	cd $(srcdir) && rm -rf autom4te.cache .version && $(_autoreconf)
+	$(MAKE) $(AM_MAKEFLAGS) Makefile
+
 else
 
 .DEFAULT_GOAL := abort-due-to-no-makefile
@@ -86,6 +112,18 @@ abort-due-to-no-makefile:
 endif
 
 # Tell version 3.79 and up of GNU make to not build goals in this
-# directory in parallel.  This is necessary in case someone tries to
-# build multiple targets on one command line.
+# directory in parallel, in case someone tries to build multiple
+# targets, and one of them can cause a recursive target to be invoked.
+
+# Only set this if Automake doesn't provide it.
+AM_RECURSIVE_TARGETS ?= $(RECURSIVE_TARGETS:-recursive=) \
+  $(RECURSIVE_CLEAN_TARGETS:-recursive=) \
+  dist distcheck tags ctags
+
+ALL_RECURSIVE_TARGETS += $(AM_RECURSIVE_TARGETS)
+
+ifneq ($(word 2, $(MAKECMDGOALS)), )
+ifneq ($(filter $(ALL_RECURSIVE_TARGETS), $(MAKECMDGOALS)), )
 .NOTPARALLEL:
+endif
+endif