Update for current feature test macros

blkmaker_jansson.c

@@ -6,6 +6,7 @@
  */
 
 #define _BSD_SOURCE
+#define _DEFAULT_SOURCE
 
 #include <stdlib.h>
 #include <string.h>

blktemplate.c

@@ -5,12 +5,11 @@
  * under the terms of the standard MIT license.  See COPYING for more details.
  */
 
-#define _BSD_SOURCE
-
 #include <limits.h>
 #include <stdbool.h>
 #include <stdlib.h>
 #include <string.h>
+#include <strings.h>
 
 #include <blktemplate.h>