1 files changed, 26 insertions, 0 deletions
diff --git a/gettext-tools/m4/hostname.m4 b/gettext-tools/m4/hostname.m4
new file mode 100644
index 0000000..50756f3
--- /dev/null
+++ b/gettext-tools/m4/hostname.m4
@@ -0,0 +1,26 @@
+# hostname.m4 serial 1 (gettext-0.11)
+dnl Copyright (C) 2001-2002 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+# Prerequisites of the hostname.c program.
+AC_DEFUN([gt_PREREQ_HOSTNAME],
+[
+  AC_CHECK_HEADERS(arpa/inet.h)
+  AC_CHECK_FUNCS(gethostname gethostbyname inet_ntop)
+
+  AC_MSG_CHECKING([for IPv6 sockets])
+  AC_CACHE_VAL(gt_cv_socket_ipv6,[
+    AC_TRY_COMPILE([
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netinet/in.h>],
+[int x = AF_INET6; struct in6_addr y; struct sockaddr_in6 z;],
+      gt_cv_socket_ipv6=yes, gt_cv_socket_ipv6=no)
+  ])
+  AC_MSG_RESULT($gt_cv_socket_ipv6)
+  if test $gt_cv_socket_ipv6 = yes; then
+    AC_DEFINE(HAVE_IPV6, 1, [Define if <sys/socket.h> defines AF_INET6.])
+  fi
+])