build: Move 'Makefile' fragments to subdirectories.

This follows a convention used by some other GNU packages like Autoconf,
Bison, Coreutils, and Gnulib.

* doc.am: Rename to ...
* doc/local.mk: ... this.
* emacs.am: Rename to ...
* emacs/local.mk: ... this.
* gnu-system.am: Rename to ...
* gnu/local.mk: ... this.
* daemon.am: Rename to ...
* nix/local.mk: ... this.
* Makefile.am: Adapt to them.
* doc/guix.texi (Porting to a New Platform): Adapt documentation.
* guix/config.scm.in (%state-directory, %config-directory): Adapt comments.
* emacs/guix-config.el.in (guix-config-state-directory): Likewise.

1 files changed, 157 insertions, 0 deletions

diff --git a/doc/local.mk b/doc/local.mk
new file mode 100644
index 0000000000..b9f07c3590
--- /dev/null
+++ b/doc/local.mk
@@ -0,0 +1,157 @@
+# GNU Guix --- Functional package management for GNU
+# Copyright © 2016 Eric Bavier <bavier@member.fsf.org>
+# Copyright © 2012, 2013, 2014, 2015, 2016 Ludovic Courtès <ludo@gnu.org>
+# Copyright © 2013 Andreas Enge <andreas@enge.fr>
+# Copyright © 2016 Taylan Ulrich Bayırlı/Kammer <taylanbayirli@gmail.com>
+# Copyright © 2016 Mathieu Lirzin <mthl@gnu.org>
+#
+# This file is part of GNU Guix.
+#
+# GNU Guix 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 3 of the License, or (at
+# your option) any later version.
+#
+# GNU Guix 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 GNU Guix.  If not, see <http://www.gnu.org/licenses/>.
+
+info_TEXINFOS = doc/guix.texi
+
+DOT_FILES =					\
+  doc/images/bootstrap-graph.dot		\
+  doc/images/bootstrap-packages.dot		\
+  doc/images/coreutils-graph.dot		\
+  doc/images/coreutils-bag-graph.dot		\
+  doc/images/service-graph.dot			\
+  doc/images/shepherd-graph.dot
+
+DOT_VECTOR_GRAPHICS =				\
+  $(DOT_FILES:%.dot=%.eps)			\
+  $(DOT_FILES:%.dot=%.pdf)
+
+EXTRA_DIST +=					\
+  doc/htmlxref.cnf				\
+  doc/contributing.texi				\
+  doc/emacs.texi				\
+  doc/fdl-1.3.texi				\
+  $(DOT_FILES)					\
+  $(DOT_VECTOR_GRAPHICS)			\
+  doc/images/coreutils-size-map.eps		\
+  doc/environment-gdb.scm			\
+  doc/package-hello.scm
+
+OS_CONFIG_EXAMPLES_TEXI =			\
+  doc/os-config-bare-bones.texi			\
+  doc/os-config-desktop.texi			\
+  doc/os-config-lightweight-desktop.texi
+
+# Bundle this file so that makeinfo finds it in out-of-source-tree builds.
+BUILT_SOURCES        += $(OS_CONFIG_EXAMPLES_TEXI)
+EXTRA_DIST           += $(OS_CONFIG_EXAMPLES_TEXI)
+MAINTAINERCLEANFILES  = $(OS_CONFIG_EXAMPLES_TEXI)
+
+doc/os-config-%.texi: gnu/system/examples/%.tmpl
+	$(AM_V_GEN)$(MKDIR_P) "`dirname $@`";	\
+	cp "$<" "$@"
+
+infoimagedir = $(infodir)/images
+dist_infoimage_DATA =				\
+  $(DOT_FILES:%.dot=%.png)			\
+  doc/images/coreutils-size-map.png
+
+# Try hard to obtain an image size and aspect that's reasonable for inclusion
+# in an Info or PDF document.
+DOT_OPTIONS =					\
+  -Gratio=.9 -Gnodesep=.005 -Granksep=.00005	\
+  -Nfontsize=9 -Nheight=.1 -Nwidth=.1
+
+.dot.png:
+	$(AM_V_DOT)$(DOT) -Tpng $(DOT_OPTIONS) < "$<" > "$(srcdir)/$@.tmp"; \
+	mv "$(srcdir)/$@.tmp" "$(srcdir)/$@"
+
+.dot.pdf:
+	$(AM_V_DOT)$(DOT) -Tpdf $(DOT_OPTIONS) < "$<" > "$(srcdir)/$@.tmp"; \
+	mv "$(srcdir)/$@.tmp" "$(srcdir)/$@"
+
+.dot.eps:
+	$(AM_V_DOT)$(DOT) -Teps $(DOT_OPTIONS) < "$<" > "$(srcdir)/$@.tmp"; \
+	mv "$(srcdir)/$@.tmp" "$(srcdir)/$@"
+
+.png.eps:
+	$(AM_V_GEN)convert "$<" "$@-tmp.eps"; \
+	mv "$@-tmp.eps" "$@"
+
+# We cannot add new dependencies to `doc/guix.pdf' & co. (info "(automake)
+# Extending").  Using the `-local' rules is imperfect, because they may be
+# triggered after the main rule.  Oh, well.
+pdf-local: $(DOT_FILES=%.dot=$(top_srcdir)/%.pdf)
+info-local: $(DOT_FILES=%.dot=$(top_srcdir)/%.png)
+ps-local: $(DOT_FILES=%.dot=$(top_srcdir)/%.eps)		\
+	  $(top_srcdir)/doc/images/coreutils-size-map.eps
+dvi-local: ps-local
+
+## ----------- ##
+##  Man pages. ##
+## ----------- ##
+
+# The man pages are generated using GNU Help2man.  In makefiles rules they
+# depend not on the binary, but on the source files.  This usage allows a
+# manual page to be generated by the maintainer and included in the
+# distribution without requiring the end-user to have 'help2man' installed.
+# They are built in $(srcdir) like info manuals.
+
+sub_commands_mans =				\
+  $(srcdir)/doc/guix-archive.1			\
+  $(srcdir)/doc/guix-build.1			\
+  $(srcdir)/doc/guix-challenge.1		\
+  $(srcdir)/doc/guix-download.1			\
+  $(srcdir)/doc/guix-edit.1			\
+  $(srcdir)/doc/guix-environment.1		\
+  $(srcdir)/doc/guix-gc.1			\
+  $(srcdir)/doc/guix-hash.1			\
+  $(srcdir)/doc/guix-import.1			\
+  $(srcdir)/doc/guix-lint.1			\
+  $(srcdir)/doc/guix-package.1			\
+  $(srcdir)/doc/guix-publish.1			\
+  $(srcdir)/doc/guix-pull.1			\
+  $(srcdir)/doc/guix-refresh.1			\
+  $(srcdir)/doc/guix-size.1			\
+  $(srcdir)/doc/guix-system.1
+
+dist_man1_MANS =				\
+  $(srcdir)/doc/guix.1				\
+  $(sub_commands_mans)
+
+gen_man =						\
+  LANGUAGE= $(top_builddir)/pre-inst-env $(HELP2MAN)	\
+  $(HELP2MANFLAGS)
+
+HELP2MANFLAGS = --source=GNU --info-page=$(PACKAGE_TARNAME)
+
+$(srcdir)/doc/guix.1: scripts/guix.in $(sub_commands_mans)
+	-$(AM_V_HELP2MAN)$(gen_man) --output="$@" `basename "$@" .1`
+
+# The 'case' ensures the man pages are only generated if the corresponding
+# source script (the first prerequisite) has been changed.  The $(GOBJECTS)
+# prerequisite is solely meant to force these docs to be made only after all
+# Guile modules have been compiled.
+$(srcdir)/doc/guix-%.1: guix/scripts/%.scm $(GOBJECTS)
+	-@case '$?' in \
+	  *$<*) $(AM_V_P) && set -x || echo "  HELP2MAN $@"; \
+	        $(gen_man) --output="$@" "guix $*";; \
+	  *)    : ;; \
+	esac
+
+if BUILD_DAEMON
+
+dist_man1_MANS += $(srcdir)/doc/guix-daemon.1
+
+$(srcdir)/doc/guix-daemon.1: nix/nix-daemon/guix-daemon.cc
+	-$(AM_V_HELP2MAN)$(gen_man) --output="$@" `basename "$@" .1`
+
+endif