build: break up monolithic Makefile.am in subdir-specific fragments

This is convenient to do, now that we have improved "relative directory"
support with the '%reladir%' (a.k.a. '%D%') and '%canon_reladir%' (a.k.a.
'%C%') Automake-time substitutions for included makefile fragments.

This move also satisfy our philosophy of using new Automake features in
our own build system, as a way of facilitating early discovery of possible
bugs or interface warts.

* Makefile.am: Break up ...
* doc/Makefile.inc, lib/Automake/Makefile.inc, lib/Makefile.inc,
lib/am/Makefile.inc, m4/Makefile.inc, t/Makefile.inc): ... in this
new included fragments.  Adjust as needed, and make deliberate use
of the '%D%' substitution.
* contrib/t/local.am: Rename ...
* contrib/t/Makefile.inc: ... like this.

Signed-off-by: Stefano Lattarini <stefano.lattarini@gmail.com>

1 files changed, 116 insertions, 0 deletions

diff --git a/doc/Makefile.inc b/doc/Makefile.inc
new file mode 100644
index 000000000..8515a5d5a
--- /dev/null
+++ b/doc/Makefile.inc
@@ -0,0 +1,116 @@
+## Included by top-level Makefile for Automake.
+
+## Copyright (C) 1995-2013 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
+## the Free Software Foundation; either version 2, or (at your option)
+## any later version.
+##
+## This program is distributed in the hope that it will be useful,
+## but WITHOUT ANY WARRANTY; without even the implied warranty of
+## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+## GNU General Public License for more details.
+##
+## You should have received a copy of the GNU General Public License
+## along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+## ---------------- ##
+##  Documentation.  ##
+## ---------------- ##
+
+info_TEXINFOS = %D%/automake.texi %D%/automake-history.texi
+doc_automake_TEXINFOS = %D%/fdl.texi
+doc_automake_history_TEXINFOS = %D%/fdl.texi
+
+man1_MANS = \
+  %D%/aclocal.1 \
+  %D%/automake.1 \
+  %D%/aclocal-$(APIVERSION).1 \
+  %D%/automake-$(APIVERSION).1
+
+$(man1_MANS): $(top_srcdir)/configure.ac
+
+CLEANFILES += $(man1_MANS)
+EXTRA_DIST += %D%/help2man
+
+update_mans = \
+  $(AM_V_GEN): \
+    && $(MKDIR_P) %D% \
+    && $(extend_PATH) \
+    && $(PERL) $(srcdir)/%D%/help2man --output=$@
+
+%D%/aclocal.1 %D%/automake.1:
+	$(AM_V_GEN): \
+	  && $(MKDIR_P) %D% \
+	  && f=`echo $@ | sed 's|.*/||; s|\.1$$||; $(transform)'` \
+	  && echo ".so man1/$$f-$(APIVERSION).1" > $@
+
+%D%/aclocal-$(APIVERSION).1: aclocal.in aclocal lib/Automake/Config.pm
+	$(update_mans) aclocal-$(APIVERSION)
+%D%/automake-$(APIVERSION).1: automake.in automake lib/Automake/Config.pm
+	$(update_mans) automake-$(APIVERSION)
+
+## ---------------------------- ##
+##  Example package "amhello".  ##
+## ---------------------------- ##
+
+amhello_sources = \
+  %D%/amhello/configure.ac \
+  %D%/amhello/Makefile.am \
+  %D%/amhello/README \
+  %D%/amhello/src/main.c \
+  %D%/amhello/src/Makefile.am
+
+amhello_configury = \
+  aclocal.m4 \
+  autom4te.cache \
+  Makefile.in \
+  config.h.in \
+  configure \
+  depcomp \
+  install-sh \
+  missing \
+  src/Makefile.in
+
+dist_noinst_DATA += $(amhello_sources)
+dist_doc_DATA = $(srcdir)/%D%/amhello-1.0.tar.gz
+
+setup_autotools_paths = { \
+  $(extend_PATH) \
+    && ACLOCAL=aclocal-$(APIVERSION) && export ACLOCAL \
+    && AUTOMAKE=automake-$(APIVERSION) && export AUTOMAKE \
+    && AUTOCONF='$(am_AUTOCONF)' && export AUTOCONF \
+    && AUTOM4TE='$(am_AUTOM4TE)' && export AUTOM4TE \
+    && AUTORECONF='$(am_AUTORECONF)' && export AUTORECONF \
+    && AUTOHEADER='$(am_AUTOHEADER)' && export AUTOHEADER \
+    && AUTOUPDATE='$(am_AUTOUPDATE)' && export AUTOUPDATE \
+    && true; \
+}
+
+# We depend on configure.ac so that we regenerate the tarball
+# whenever the Automake version changes.
+$(srcdir)/%D%/amhello-1.0.tar.gz: $(amhello_sources) $(srcdir)/configure.ac
+	$(AM_V_GEN)tmp=amhello-output.tmp \
+	  && $(am__cd) $(srcdir)/%D%/amhello \
+	  && : Make our	aclocal and automake avaiable before system ones. \
+	  && $(setup_autotools_paths) \
+	  && ( \
+	    { $(AM_V_P) || exec 5>&2 >$$tmp 2>&1; } \
+	      && $(am_AUTORECONF) -vfi \
+	      && ./configure \
+	      && $(MAKE) $(AM_MAKEFLAGS) distcheck \
+	      && $(MAKE) $(AM_MAKEFLAGS) distclean \
+	      || { \
+	        if $(AM_V_P); then :; else \
+	          echo "$@: recipe failed." >&5; \
+	          echo "See file '`pwd`/$$tmp' for details" >&5; \
+		fi; \
+	        exit 1; \
+	      } \
+	  ) \
+	  && rm -rf $(amhello_configury) $$tmp \
+	  && mv -f amhello-1.0.tar.gz ..
+
+
+# vim: ft=automake noet