initial version of OsmoGGSN user manual

Closes: OS#1721
Change-Id: I7cdf150e8dd4f9dfc5e6d28e780d05dc1e1e5458
diff --git a/doc/manuals/Makefile b/doc/manuals/Makefile
new file mode 100644
index 0000000..daf3597
--- /dev/null
+++ b/doc/manuals/Makefile
@@ -0,0 +1,13 @@
+# XSL stylesheets downloaded from http://docbook.sourceforge.net/release/xsl/current/html/
+# Makefile from BitBake/OpenEmbedded manuals
+
+TOPDIR := ..
+ASCIIDOCS := osmoggsn-usermanual
+
+include $(TOPDIR)/build/Makefile.asciidoc.inc
+include $(TOPDIR)/build/Makefile.inc
+
+osmoggsn-usermanual.pdf: chapters/*.adoc
+
+clean:
+	rm -rf $(cleanfiles)