From 90a2295c1004f57668b491908d304a986cc87d52 Mon Sep 17 00:00:00 2001
From: ng0 <ng0@infotropique.org>
Date: Sat, 30 Sep 2017 10:38:49 +0000
Subject: [PATCH] build-process: pass '--enable-documentation' to ONLY build
 the documentation. This obviously defaults to NO. Furthermore add
 DISTCLEANFILES to 'doc/Makefile.am'.

Adjust contrib/packages/guix/gnunet-doc.scm to it.
---
 Makefile.am                          |  7 +++-
 configure.ac                         | 17 ++++++++++
 contrib/packages/guix/gnunet-doc.scm |  4 ++-
 doc/Makefile.am                      | 49 ++++++++++++++++++----------
 doc/README.txt                       |  2 +-
 5 files changed, 58 insertions(+), 21 deletions(-)

diff --git a/Makefile.am b/Makefile.am
index 567e7b5ff..0466fcc10 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -1,6 +1,11 @@
 # This Makefile.am is in the public domain
 AM_CPPFLAGS = -I$(top_srcdir)/src/include
-SUBDIRS  = doc m4 src po pkgconfig
+
+if DOC_ONLY
+  SUBDIRS = doc m4 po pkgconfig
+else
+  SUBDIRS  = doc m4 src po pkgconfig
+endif
 
 if !TALER_ONLY
   SUBDIRS += contrib
diff --git a/configure.ac b/configure.ac
index 101fc77cb..9d1fb9ab3 100644
--- a/configure.ac
+++ b/configure.ac
@@ -565,6 +565,23 @@ AC_CHECK_LIB([kvm],[kvm_open])
 AC_CHECK_LIB([kstat],[kstat_open])
 
 
+# should the build process be restricted to only building
+# the documentation?
+AC_MSG_CHECKING(whether to build documentation ONLY)
+AC_ARG_ENABLE([documentation],
+   [AS_HELP_STRING([--enable-documentation], [only build the documentation])],
+   [doc_only=${enableval}],
+   [doc_only=no])
+AC_MSG_RESULT($doc_only)
+if test "x$doc_only" = "xyes"
+then
+  AM_CONDITIONAL([DOC_ONLY],true)
+  AC_DEFINE([DOC_ONLY],[1],[Building the documentation])
+else
+  AM_CONDITIONAL([DOC_ONLY],false)
+  AC_DEFINE([DOC_ONLY],[0],[Canonical compilation])
+fi
+
 # should the build process be restricted to the code required
 # for GNU Taler wallets?
 AC_MSG_CHECKING(whether to compile GNU Taler Wallet library ONLY)
diff --git a/contrib/packages/guix/gnunet-doc.scm b/contrib/packages/guix/gnunet-doc.scm
index a988e1125..9974c1b51 100644
--- a/contrib/packages/guix/gnunet-doc.scm
+++ b/contrib/packages/guix/gnunet-doc.scm
@@ -128,7 +128,9 @@
          ("texinfo-5" ,texinfo-5) ; Debian stable
          ("libtool" ,libtool)))
       (arguments
-       `(#:tests? #f ;Don't run tests
+       `(#:configure-flags
+         (list "--enable-documentation")
+         #:tests? #f ;Don't run tests
          #:phases
          (modify-phases %standard-phases
            (add-after 'unpack 'autoconf
diff --git a/doc/Makefile.am b/doc/Makefile.am
index 0fadf1a37..1a8bb64b9 100644
--- a/doc/Makefile.am
+++ b/doc/Makefile.am
@@ -104,34 +104,40 @@ gnunet_tutorial_examples =					\
 	025.c							\
 	026.c
 
-info_TEXINFOS = \
-	gnunet.texi \
+info_TEXINFOS = 						\
+	gnunet.texi 						\
 	gnunet-c-tutorial.texi
 
-# It seems as if either we still have gnunet-c-tutorial markup issues
-# or we have issues that can only occur in systems which are not using Guix
-# or we have version incompabilities.
-#	gnunet-c-tutorial.texi
-
-gnunet_TEXINFOS = \
-	chapters/developer.texi \
-	chapters/installation.texi \
-	chapters/philosophy.texi \
-	chapters/user.texi \
-	fdl-1.3.texi \
+gnunet_TEXINFOS = 						\
+	chapters/developer.texi 				\
+	chapters/installation.texi 				\
+	chapters/philosophy.texi 				\
+	chapters/user.texi 					\
+	fdl-1.3.texi 						\
 	gpl-3.0.texi
 
-EXTRA_DIST =									\
-	$(gnunet_TEXINFOS)							\
-	outdated-and-old-installation-instructions.txt				\
-	gnunet-c-tutorial-v1.pdf						\
-	$(gnunet_tutorial_examples)						\
+EXTRA_DIST =							\
+	$(gnunet_TEXINFOS)					\
+	outdated-and-old-installation-instructions.txt		\
+	gnunet-c-tutorial-v1.pdf				\
+	$(gnunet_tutorial_examples)				\
 	README.txt
 
 
 #	$(DOT_FILES)								\
 #	$(DOT_VECTOR_GRAPHICS)
 
+DISTCLEANFILES = 						\
+	gnunet.cps						\
+	gnunet-c-tutorial.cps					\
+	chapters/developer.cps					\
+	chapters/installation.cps				\
+	chapter/philosophy.cps					\
+	chapters/user.cps					\
+	fdl-1.3.cps						\
+	gpl-3.0.cps
+
+# if HAVE_EXTENDED_DOCUMENTATION_BUILDING
 daemon_lego_block.png: images/daemon_lego_block.svg
 	convert images/daemon_lego_block.svg images/daemon_lego_block.png &&
 	pngcrush images/daemon_lego_block.png images/daemon_lego_block.png
@@ -217,3 +223,10 @@ doc-all-install: doc-all-give-me-the-noise
 # 	$(wildcard *.cps)
 
 .PHONY: version.texi
+# if HAVE_EXTENDED_DOCUMENTATION_BUILDING_PDF
+
+# if HAVE_EXTENDED_DOCUMENTATION_BUILDING_HTML
+
+# endif
+# endif
+# endif
diff --git a/doc/README.txt b/doc/README.txt
index 2abe479dd..fbbc24424 100644
--- a/doc/README.txt
+++ b/doc/README.txt
@@ -14,7 +14,7 @@ guix environment gnunet-doc
 
 You need to have Texinfo and Texlive in your path.
 sh bootstrap
-./configure
+./configure --enable-documentation
 cd doc
 make doc-all-give-me-the-noise
 
-- 
2.25.1