Check for sockaddr_in.sin_len.

If found, set SOCK_HAS_LEN which is used in addr.c.  Should fix keyscan
tests on platforms with this (eg old NetBSD).

diff --git a/configure.ac b/configure.ac
index c591a041395daeab8dddecec641cbaaa14574a8a..1e77ecfc3e5549f6044a695c97ac607881bbd340 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -4325,6 +4325,16 @@ AC_CHECK_MEMBER([struct __res_state.retrans], [], [AC_DEFINE([__res_state], [sta
 #include <resolv.h>
 ]])
 
+AC_CHECK_MEMBER([struct sockaddr_in.sin_len],
+    [AC_DEFINE([SOCK_HAS_LEN], [1], [sockaddr_in has sin_len])],
+    [],
+    [AC_LANG_SOURCE([[
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+    ]])]
+)
+
 AC_CACHE_CHECK([for ss_family field in struct sockaddr_storage],
                ac_cv_have_ss_family_in_struct_ss, [
        AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[