diff --git a/libraries/liblthread/Makefile.in b/libraries/liblthread/Makefile.in
index 762b6ba800..0284949c01 100644
--- a/libraries/liblthread/Makefile.in
+++ b/libraries/liblthread/Makefile.in
@@ -5,3 +5,6 @@ LIBRARY	= liblthread.a
 XSRCS	= version.c
 SRCS	= thread.c stack.c
 OBJS	= thread.o stack.o
+
+XDEFS	= @LTHREAD_DEFS@
+XLIBS	= @LTHREAD_LIBS@