Added mostly autogenerated man page. Dependency on executable is broken.

Makefile.am

@@ -2,4 +2,21 @@ SUBDIRS = po src tests
 
 ACLOCAL_AMFLAGS = -I m4
 
-EXTRA_DIST = config.rpath m4/ChangeLog
+man_page = $(PACKAGE).1
+man_MANS = $(man_page)
+CLEANFILES = $(man_page)
+
+EXTRA_DIST = config.rpath m4/ChangeLog $(man_MANS)
+
+# Create the man page from --help and --version output
+
+common_dep = $(top_srcdir)/configure.ac
+### TODO remove the explicit name
+$(man_page): $(common_dep) $(srcdir)/hangon.x $(srcdir)/src/hangon.c
+
+SUFFIXES = .x .1
+.x.1:
+	$(HELP2MAN) \
+	 --no-info \
+	 --include=$(srcdir)/$*.x \
+	 --output=$@ src/$*

configure.ac

@@ -34,5 +34,7 @@ AC_CONFIG_FILES([tests/Makefile])
 # but not required for simply building it.
 # autom4te: used for merging tests into a suite
 AM_MISSING_PROG([AUTOM4TE], [autom4te])
+# help2man: used for deriving man pages from --help and --version output
+AM_MISSING_PROG([HELP2MAN], [help2man])
 
 AC_OUTPUT

hangon.x

@@ -0,0 +1,4 @@
+[NAME]
+hangon \- restart a command until it finishes
+[DESCRIPTION]
+.\" Add any additional description here

tutorial.texi

@@ -79,3 +79,28 @@ $ autoreconf
 $ make check
 
 ### Add a man page
+
+# -> configure.ac
+# help2man: used for deriving man pages from --help and --version output
+AM_MISSING_PROG([HELP2MAN], [help2man])
+
+# -> Makefile.am
+
+man_page = $(PACKAGE).1
+man_MANS = $(man_page)
+CLEANFILES = $(man_page)
+
+EXTRA_DIST = config.rpath m4/ChangeLog $(man_MANS)
+
+# Create the man page from --help and --version output
+
+common_dep = $(top_srcdir)/configure.ac
+### TODO remove the explicit name
+$(man_page): $(common_dep) $(srcdir)/hangon.x $(srcdir)/src/hangon.c
+
+SUFFIXES = .x .1
+.x.1:
+	$(HELP2MAN) \
+	 --no-info \
+	 --include=$(srcdir)/$*.x \
+	 --output=$@ src/$*