gethostname() is more a BSD feature than an XOPEN one.
PR: 379
diff --git a/ssl/ssltest.c b/ssl/ssltest.c
index 978516f..8ff0762 100644
--- a/ssl/ssltest.c
+++ b/ssl/ssltest.c
@@ -114,7 +114,7 @@
* SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project.
*/
-#define _XOPEN_SOURCE 600 /* Or gethostname won't be declared properly
+#define _BSD_SOURCE 1 /* Or gethostname won't be declared properly
on Linux and GNU platforms. */
#define _XOPEN_SOURCE_EXTENDED 1 /* Or gethostname won't be declared properly
on Compaq platforms (at least with DEC C).
