include libltdl folder for out-of-tree builds

diff --git a/lib/common/Makefile.am b/lib/common/Makefile.am
index b894c44e3d3abbcb1cf43201acda7eaaf2fe6d03..16769eba69f179d9abb85285631bd69486277546 100644 (file)
--- a/lib/common/Makefile.am
+++ b/lib/common/Makefile.am
@@ -3,6 +3,7 @@
 
 AM_CPPFLAGS = \
         -I$(top_srcdir) \
+        -I$(top_srcdir)/libltdl \
        -I$(top_srcdir)/lib/gvc \
        -I$(top_srcdir)/lib/pack \
        -I$(top_srcdir)/lib/label \