Introduce an Automake helper to factor extra recursive targets.

	* build-aux/extra-recursive-targets.mk: New.

git-svn-id: https://svn.lrde.epita.fr/svn/oln/trunk@4021 4aad255d-cdde-0310-9447-f3009e2ae8c0

ChangeLog

+2009-06-08  Roland Levillain  <roland@lrde.epita.fr>
+
+	Introduce an Automake helper to factor extra recursive targets.
+
+	* build-aux/extra-recursive-targets.mk: New.
+
 2009-06-08  Roland Levillain  <roland@lrde.epita.fr>
 
 	* configure.ac: Configure scribo/tests/unit_test/Makefile.

build-aux/extra-recursive-targets.mk

+# extra-recursive-targets.mk				-*- Automake -*-
+# Factor the installation of additional recursive targets.
+
+# Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
+# 2003, 2004, 2005, 2006, 2008  Free Software Foundation, Inc.
+# This Makefile.in is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
+# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+# PARTICULAR PURPOSE.
+
+EXTRA_RECURSIVE_TARGETS =
+
+# Copied from a generated Makefile.in (rule `$(RECURSIVE_TARGETS)').
+# (Automake does not allow us to interact with the code it generates
+# in Makefile.in.)  We might want to propose this as a patch to the
+# Automake project.
+$(EXTRA_RECURSIVE_TARGETS):
+	@failcom='exit 1'; \
+	for f in x $$MAKEFLAGS; do \
+	  case $$f in \
+	    *=* | --[!k]*);; \
+	    *k*) failcom='fail=yes';; \
+	  esac; \
+	done; \
+	dot_seen=no; \
+	target=`echo $@ | sed s/-recursive//`; \
+	list='$(SUBDIRS)'; for subdir in $$list; do \
+	  echo "Making $$target in $$subdir"; \
+	  if test "$$subdir" = "."; then \
+	    dot_seen=yes; \
+	    local_target="$$target-am"; \
+	  else \
+	    local_target="$$target"; \
+	  fi; \
+	  (cd $$subdir && $(MAKE) $(AM_MAKEFLAGS) $$local_target) \
+	  || eval $$failcom; \
+	done; \
+	if test "$$dot_seen" = "no"; then \
+	  $(MAKE) $(AM_MAKEFLAGS) "$$target-am" || exit 1; \
+	fi; test -z "$$fail"
+
+.PHONY: $(EXTRA_RECURSIVE_TARGETS)