From 709dd5aa4d1b8c14f2df6b450ddf5d855782b56b Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jo=C3=A3o=20Br=C3=A1zio?= <jbrazio@gmail.com>
Date: Thu, 31 Mar 2016 16:13:37 +0100
Subject: [PATCH] Fix an error when EXTRUDE_MINTEMP is not defined

---
 Marlin/Conditionals.h | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/Marlin/Conditionals.h b/Marlin/Conditionals.h
index a1ab07d891..c6886b517e 100644
--- a/Marlin/Conditionals.h
+++ b/Marlin/Conditionals.h
@@ -27,10 +27,21 @@
 
 #ifndef CONDITIONALS_H
 
+/**
+* Miscellaneous
+*/
 #ifndef M_PI
   #define M_PI 3.1415926536
 #endif
 
+/**
+ * This value is used by M109 when tying to calculate a ballpark safe margin
+ * to prevent wait-forever situation.
+ */
+#ifndef EXTRUDE_MINTEMP
+ #define EXTRUDE_MINTEMP 170
+#endif
+
 #ifndef CONFIGURATION_LCD // Get the LCD defines which are needed first
 
   #define PIN_EXISTS(PN) (defined(PN##_PIN) && PN##_PIN >= 0)