--- source/dft/fun-tester.cc.orig	2020-05-14 00:03:22 UTC
+++ source/dft/fun-tester.cc
@@ -42,7 +42,7 @@
    the TEST_BUILD. 
  */
 
-#define _POSIX_SOURCE 1
+//#define _POSIX_SOURCE 1
 
 #define __CVERSION__
 #include <cmath>