fix strptime compilation error

include/pcp/ed.h

@@ -32,6 +32,28 @@
 #include <sodium.h>
 #include <string.h>
 #include <stdio.h>
+
+#if defined __linux__ || defined __GNU__ || defined __GLIBC__
+#  ifndef _DEFAULT_SOURCE
+#    define _DEFAULT_SOURCE 1
+#  endif
+#
+#  ifndef _XOPEN_SOURCE
+#    define _XOPEN_SOURCE 1
+#  endif
+#
+#  ifndef _GNU_SOURCE
+#    define _GNU_SOURCE 1
+#  endif
+#
+#  ifndef __USE_XOPEN
+#    define __USE_XOPEN 1
+#  endif
+#
+#else
+#  define _BSD_SOURCE 1
+#endif
+
 #include <time.h>
 
 #include "defines.h"

include/pcp/key.h

@@ -26,6 +26,28 @@
 #include <sodium.h>
 #include <string.h>
 #include <stdio.h>
+
+#if defined __linux__ || defined __GNU__ || defined __GLIBC__
+#  ifndef _DEFAULT_SOURCE
+#    define _DEFAULT_SOURCE 1
+#  endif
+#
+#  ifndef _XOPEN_SOURCE
+#    define _XOPEN_SOURCE 1
+#  endif
+#
+#  ifndef _GNU_SOURCE
+#    define _GNU_SOURCE 1
+#  endif
+#
+#  ifndef __USE_XOPEN
+#    define __USE_XOPEN 1
+#  endif
+#
+#else
+#  define _BSD_SOURCE 1
+#endif
+
 #include <time.h>
 
 #include <math.h>

include/pcp/mgmt.h

@@ -1,7 +1,7 @@
 /*
     This file is part of Pretty Curved Privacy (pcp1).
 
-    Copyright (C) 2014 T.v.Dein.
+    Copyright (C) 2014-2016 T.v.Dein.
 
     This program is free software: you can redistribute it and/or modify
     it under the terms of the GNU General Public License as published by
@@ -38,6 +38,11 @@
 #  ifndef _GNU_SOURCE
 #    define _GNU_SOURCE 1
 #  endif
+#
+#  ifndef __USE_XOPEN
+#    define __USE_XOPEN 1
+#  endif
+#
 #else
 #  define _BSD_SOURCE 1
 #endif