-module_echo_cancel_la_LIBADD = $(MODULE_LIBADD) $(LIBSPEEX_LIBS) $(ORC_LIBS)
-module_echo_cancel_la_CFLAGS = $(AM_CFLAGS) $(LIBSPEEX_CFLAGS) $(ORC_CFLAGS) -I$(top_builddir)/src/modules/echo-cancel
+module_echo_cancel_la_LIBADD = $(MODULE_LIBADD) $(LIBSPEEX_LIBS)
+module_echo_cancel_la_CFLAGS = $(AM_CFLAGS) $(LIBSPEEX_CFLAGS)
+if HAVE_ORC
+ORC_SOURCE += modules/echo-cancel/adrian-aec
+nodist_module_echo_cancel_la_SOURCES = \
+ modules/echo-cancel/adrian-aec-orc-gen.c \
+ modules/echo-cancel/adrian-aec-orc-gen.h
+module_echo_cancel_la_LIBADD += $(ORC_LIBS)
+module_echo_cancel_la_CFLAGS += $(ORC_CFLAGS) -I$(top_builddir)/src/modules/echo-cancel
+endif