diff --git a/lib/otp/Makefile.in b/lib/otp/Makefile.in
index 990eedc32..25df67001 100644
--- a/lib/otp/Makefile.in
+++ b/lib/otp/Makefile.in
@@ -13,6 +13,8 @@ RANLIB = @RANLIB@
 LN_S = @LN_S@
 DEFS = @DEFS@
 CFLAGS = @CFLAGS@
+LDFLAGS = @LDFLAGS@
+LD_FLAGS = @LD_FLAGS@
 LIBS = @LIBS@
 LIB_DBM = @LIB_DBM@