diff --git a/Makefile.in b/Makefile.in
index 9425a3def08..192375b367e 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -44,6 +44,7 @@ C_SWITCH_SYSTEM=@c_switch_system@
 ALLOCA=@ALLOCA@
 LN_S=@LN_S@
 CFLAGS=@CFLAGS@
+LDFLAGS=@LDFLAGS@
 C_SWITCH_X_SITE=@C_SWITCH_X_SITE@
 LD_SWITCH_X_SITE=@LD_SWITCH_X_SITE@
 YACC=@YACC@