1 files changed, 5 insertions, 1 deletions
diff --git a/drawing.c b/drawing.c
index 90f54f3..2c8816c 100644
--- a/drawing.c
+++ b/drawing.c
@@ -27,7 +27,11 @@
 #include <stdlib.h>
 #include <string.h>
 #include <assert.h>
-#include <tgmath.h>
+#ifdef NO_TGMATH_H
+#  include <math.h>
+#else
+#  include <tgmath.h>
+#endif
 
 #include "puzzles.h"