From 1681ad71a378e869cb89451ccd330f87f206b058 Mon Sep 17 00:00:00 2001
From: Jaron Kent-Dobias <jaron@kent-dobias.com>
Date: Mon, 23 Jul 2018 17:20:42 -0400
Subject: same fix for cgm...

---
 src/wolff_cgm.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/wolff_cgm.cpp b/src/wolff_cgm.cpp
index 1574308..10477bd 100644
--- a/src/wolff_cgm.cpp
+++ b/src/wolff_cgm.cpp
@@ -111,6 +111,7 @@ int main(int argc, char *argv[]) {
   } else {
     // a more complex example: measure the average magnetization, and draw the spin configuration to the screen
 
+#ifdef HAVE_GLUT
     // initialize glut
     glutInit(&argc, argv);
     glutInitDisplayMode(GLUT_SINGLE | GLUT_RGB);
@@ -144,6 +145,7 @@ int main(int argc, char *argv[]) {
       }
       glFlush();
     };
+#endif
   }
 
   // run wolff for N cluster flips
-- 
cgit v1.2.3-70-g09d2