1 files changed, 16 insertions, 0 deletions

diff --git a/configure.in b/configure.in
index 974d0df6b..e9467011b 100644
--- a/configure.in
+++ b/configure.in
@@ -686,6 +686,22 @@ OSSH_CHECK_HEADER_FOR_FIELD(ut_time, utmp.h, HAVE_TIME_IN_UTMP)
 OSSH_CHECK_HEADER_FOR_FIELD(ut_time, utmpx.h, HAVE_TIME_IN_UTMPX)
 OSSH_CHECK_HEADER_FOR_FIELD(ut_tv, utmpx.h, HAVE_TV_IN_UTMPX)
 
+AC_CACHE_CHECK([for sun_len field in struct sockaddr_un],
+                ac_cv_have_sun_len_in_struct_sockaddr_un, [
+        AC_TRY_COMPILE(
+                [
+#include <sys/types.h>
+#include <sys/socket.h>
+                ],
+                [ struct sockaddr_un s; s.sun_len = 1; ],
+                [ ac_cv_have_sun_len_in_struct_sockaddr_un="yes" ],
+                [ ac_cv_have_sun_len_in_struct_sockaddr_un="no" ],
+        )
+])
+if test "x$ac_cv_have_sun_len_in_struct_sockaddr_un" = "xyes" ; then
+        AC_DEFINE(HAVE_SUN_LEN_IN_SOCKADDR_UN)
+fi
+
 AC_CACHE_CHECK([for ss_family field in struct sockaddr_storage],
                 ac_cv_have_ss_family_in_struct_ss, [
         AC_TRY_COMPILE(