diff -r 33200fc645f6 magick/blob.c
--- a/magick/blob.c	Sat Nov 07 14:49:16 2015 -0600
+++ b/magick/blob.c	Sun May 29 14:12:57 2016 -0500
@@ -68,6 +68,7 @@
 */
 #define DefaultBlobQuantum  65541
 
+#undef HAVE_POPEN
 
 /*
   Enum declarations.