Add subdir option to automake

diff --git a/xmltooling/Makefile.am b/xmltooling/Makefile.am
index 39cfa0d..fa907dd 100644 (file)
--- a/xmltooling/Makefile.am
+++ b/xmltooling/Makefile.am
@@ -1,4 +1,4 @@
-AUTOMAKE_OPTIONS = foreign
+AUTOMAKE_OPTIONS = foreign subdir-objects
 
 if BUILD_XMLSEC
 lib_LTLIBRARIES = libxmltooling-lite.la libxmltooling.la