commit 24c3a17ac268a2ee91e0649d53f0fd6364f613d9
Author: francois.trahay <francois.trahay@telecom-sudparis.eu>
Date:   Thu Aug 10 17:19:38 2017 +0200

    fix the installation of the documentation

diff --git a/doc/Makefile.am b/doc/Makefile.am
index 44ac248..58c42f0 100644
--- a/doc/Makefile.am
+++ b/doc/Makefile.am
@@ -20,6 +20,7 @@ clean-local:
 	rm -rf $(top_srcdir)/doc/man latex doxyfile.stamp
 
 install-data-local:
+	$(INSTALL) -d $(DESTDIR)$(datadir)/doc/$(PACKAGE)/
 	$(INSTALL_DATA) -D $(builddir)/latex/refman.pdf  \
 		$(DESTDIR)$(datadir)/doc/$(PACKAGE)/
 
