replace _BSD_SOURCE with _DEFAULT_SOURCE

fixes the warning:

warning: #warning "_BSD_SOURCE and _SVID_SOURCE are deprecated, use _DEFAULT_SOURCE"

src/cairo-cff-subset.c

@@ -41,7 +41,7 @@
  * http://www.adobe.com/content/dam/Adobe/en/devnet/font/pdfs/5177.Type2.pdf
  */
 
-#define _BSD_SOURCE /* for snprintf(), strdup() */
+#define _DEFAULT_SOURCE /* for snprintf(), strdup() */
 #include "cairoint.h"
 
 #include "cairo-array-private.h"

src/cairo-ft-font.c

@@ -38,7 +38,7 @@
  *      Carl Worth <cworth@cworth.org>
  */
 
-#define _BSD_SOURCE /* for strdup() */
+#define _DEFAULT_SOURCE /* for strdup() */
 #include "cairoint.h"
 
 #include "cairo-error-private.h"

src/cairo-output-stream.c

@@ -33,7 +33,7 @@
  *	Kristian Høgsberg <krh@redhat.com>
  */
 
-#define _BSD_SOURCE /* for snprintf() */
+#define _DEFAULT_SOURCE /* for snprintf() */
 #include "cairoint.h"
 
 #include "cairo-output-stream-private.h"

src/cairo-path-stroke-boxes.c

@@ -36,7 +36,7 @@
  *	Chris Wilson <chris@chris-wilson.co.uk>
  */
 
-#define _BSD_SOURCE /* for hypot() */
+#define _DEFAULT_SOURCE /* for hypot() */
 #include "cairoint.h"
 
 #include "cairo-box-inline.h"

src/cairo-path-stroke-polygon.c

@@ -37,7 +37,7 @@
  *	Chris Wilson <chris@chris-wilson.co.uk>
  */
 
-#define _BSD_SOURCE /* for hypot() */
+#define _DEFAULT_SOURCE /* for hypot() */
 #include "cairoint.h"
 
 #include "cairo-box-inline.h"

src/cairo-path-stroke-tristrip.c

@@ -37,7 +37,7 @@
  *	Chris Wilson <chris@chris-wilson.co.uk>
  */
 
-#define _BSD_SOURCE /* for hypot() */
+#define _DEFAULT_SOURCE /* for hypot() */
 #include "cairoint.h"
 
 #include "cairo-box-inline.h"

src/cairo-path-stroke.c

@@ -36,7 +36,7 @@
  *	Chris Wilson <chris@chris-wilson.co.uk>
  */
 
-#define _BSD_SOURCE /* for hypot() */
+#define _DEFAULT_SOURCE /* for hypot() */
 #include "cairoint.h"
 
 #include "cairo-box-inline.h"

src/cairo-pdf-surface.c

@@ -39,7 +39,7 @@
  *	Adrian Johnson <ajohnson@redneon.com>
  */
 
-#define _BSD_SOURCE /* for snprintf() */
+#define _DEFAULT_SOURCE /* for snprintf() */
 #include "cairoint.h"
 
 #include "cairo-pdf.h"

src/cairo-ps-surface.c

@@ -53,7 +53,7 @@
  *   2. Using gs to do PS -> PDF and PDF -> PS will always work well.
  */
 
-#define _BSD_SOURCE /* for ctime_r(), snprintf(), strdup() */
+#define _DEFAULT_SOURCE /* for ctime_r(), snprintf(), strdup() */
 #include "cairoint.h"
 
 #include "cairo-ps.h"

src/cairo-scaled-font-subsets.c

@@ -40,7 +40,7 @@
  *	Adrian Johnson <ajohnson@redneon.com>
  */
 
-#define _BSD_SOURCE /* for snprintf(), strdup() */
+#define _DEFAULT_SOURCE /* for snprintf(), strdup() */
 #include "cairoint.h"
 #include "cairo-error-private.h"
 

src/cairo-svg-surface.c

@@ -39,7 +39,7 @@
  *	Carl Worth <cworth@cworth.org>
  */
 
-#define _BSD_SOURCE /* for snprintf() */
+#define _DEFAULT_SOURCE /* for snprintf() */
 #include "cairoint.h"
 
 #include "cairo-svg.h"

src/cairo-toy-font-face.c

@@ -39,7 +39,7 @@
  *      Behdad Esfahbod <behdad@behdad.org>
  */
 
-#define _BSD_SOURCE /* for strdup() */
+#define _DEFAULT_SOURCE /* for strdup() */
 #include "cairoint.h"
 #include "cairo-error-private.h"
 

src/cairo-truetype-subset.c

@@ -40,7 +40,7 @@
  * http://www.microsoft.com/typography/specs/default.htm
  */
 
-#define _BSD_SOURCE /* for snprintf(), strdup() */
+#define _DEFAULT_SOURCE /* for snprintf(), strdup() */
 #include "cairoint.h"
 
 #include "cairo-array-private.h"

src/cairo-type1-fallback.c

@@ -33,7 +33,7 @@
  *	Adrian Johnson <ajohnson@redneon.com>
  */
 
-#define _BSD_SOURCE /* for snprintf(), strdup() */
+#define _DEFAULT_SOURCE /* for snprintf(), strdup() */
 #include "cairoint.h"
 
 #include "cairo-array-private.h"

src/cairo-type1-subset.c

@@ -40,7 +40,7 @@
  */
 
 
-#define _BSD_SOURCE /* for snprintf(), strdup() */
+#define _DEFAULT_SOURCE /* for snprintf(), strdup() */
 #include "cairoint.h"
 
 #include "cairo-array-private.h"