diff -Naur sam2p-0.49.2.orig/configure sam2p-0.49.2.new/configure
--- sam2p-0.49.2.orig/configure	2013-09-03 16:32:54.000000000 +0200
+++ sam2p-0.49.2.new/configure	2015-02-23 20:24:48.251635254 +0100
@@ -5218,7 +5218,7 @@
 #ifdef __cplusplus
 extern "C" void exit(int);
 #endif
-#define _BSD_SOURCE 1 /* vsnprintf */
+#define _DEFAULT_SOURCE 1 /* vsnprintf */
 #define _POSIX_SOURCE 1
 #define _POSIX_C_SOURCE 2
 #include <stdio.h>
diff -Naur sam2p-0.49.2.orig/gensio.cpp sam2p-0.49.2.new/gensio.cpp
--- sam2p-0.49.2.orig/gensio.cpp	2013-09-03 16:32:54.000000000 +0200
+++ sam2p-0.49.2.new/gensio.cpp	2015-02-23 20:28:40.624393545 +0100
@@ -15,7 +15,7 @@
 extern "C" int _v_s_n_printf ( char *str, size_t n, const char *format, va_list ap );
 #else
 #undef __STRICT_ANSI__ /* for __MINGW32__ */
-#define _BSD_SOURCE 1 /* vsnprintf(); may be emulated with fixup_vsnprintf() */
+#define _DEFAULT_SOURCE 1 /* vsnprintf(); may be emulated with fixup_vsnprintf() */
 #ifndef __APPLE__ /* SUXX: Max OS X has #ifndef _POSIX_SOURCE around lstat() :-( */
 #define _POSIX_SOURCE 1 /* also popen() */
 #endif