[eog] build: OpenBSD needs _XOPEN_SOURCE_EXTENDED for strptime(3)

[Felix Riemann <friemann src gnome org>]

commit b7c68b1ffe2ebcc81d6daa947d8ee94ad4e7e2c5
Author: Antoine Jacoutot <ajacoutot gnome org>
Date:   Mon May 21 08:08:18 2012 +0200

    build: OpenBSD needs _XOPEN_SOURCE_EXTENDED for strptime(3)
    
    strptime(3) was introduced in XPG4. On OpenBSD, just defining
    _XOPEN_SOURCE gets you the older XPG3 wich doesn't include strptime(3),
    so we need to define _XOPEN_SOURCE_EXTENDED to get XPG4v2.

 src/eog-exif-util.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/src/eog-exif-util.c b/src/eog-exif-util.c
index c2f723f..a11a3a7 100644
--- a/src/eog-exif-util.c
+++ b/src/eog-exif-util.c
@@ -30,6 +30,7 @@
 
 #ifdef HAVE_STRPTIME
 #define _XOPEN_SOURCE
+#define _XOPEN_SOURCE_EXTENDED 1
 #endif
 #include <time.h>