--- dia-0.97.3/plug-ins/postscript/paginate_psprint.c.1	2016-05-11 17:45:00.583177986 +0300
+++ dia-0.97.3/plug-ins/postscript/paginate_psprint.c	2016-05-11 17:45:22.053266821 +0300
@@ -24,7 +24,6 @@
 #endif
 
 /* so we get popen and sigaction even when compiling with -ansi */
-#define _POSIX_C_SOURCE 2
 #include <stdio.h>
 #include <string.h> /* strlen */
 #include <signal.h>