X-Git-Url: http://git.demorecorder.com/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=configure.ac;h=87804ba26aa25d98fad604b858d4c7d171980ad1;hb=c7c5b710f2cc0782412c9e159986c96b52aa0d02;hp=d054a4322e046903b133f446e83308c96409de8d;hpb=af8067cbf48561f1e2d43e153292e68e0376a8f9;p=free-sw%2Fxcb%2Flibxcb

diff --git a/configure.ac b/configure.ac
index d054a43..87804ba 100644
--- a/configure.ac
+++ b/configure.ac
@@ -90,6 +90,40 @@ xauto)
 	;;
 esac
 
+# XPG4v2/UNIX95 added msg_control - check to see if we need to define
+# _XOPEN_SOURCE to get it (such as on Solaris)
+AC_CHECK_MEMBER([struct msghdr.msg_control], [], [],
+                 [
+AC_INCLUDES_DEFAULT
+#include <sys/socket.h>
+                 ])
+# First try for Solaris in C99 compliant mode, which requires XPG6/UNIX03
+if test "x$ac_cv_member_struct_msghdr_msg_control" = xno; then
+    unset ac_cv_member_struct_msghdr_msg_control
+    AC_MSG_NOTICE([trying again with _XOPEN_SOURCE=600])
+    AC_CHECK_MEMBER([struct msghdr.msg_control],
+                    [AC_DEFINE([_XOPEN_SOURCE], [600],
+                       [Defined if needed to expose struct msghdr.msg_control])
+                    ], [], [
+#define _XOPEN_SOURCE 600
+AC_INCLUDES_DEFAULT
+#include <sys/socket.h>
+                     ])
+fi
+# If that didn't work, fall back to XPG5/UNIX98 with C89
+if test "x$ac_cv_member_struct_msghdr_msg_control" = xno; then
+    unset ac_cv_member_struct_msghdr_msg_control
+    AC_MSG_NOTICE([trying again with _XOPEN_SOURCE=500])
+    AC_CHECK_MEMBER([struct msghdr.msg_control],
+                    [AC_DEFINE([_XOPEN_SOURCE], [500],
+                       [Defined if needed to expose struct msghdr.msg_control])
+                    ], [sendfds="no"], [
+#define _XOPEN_SOURCE 500
+AC_INCLUDES_DEFAULT
+#include <sys/socket.h>
+                     ])
+fi
+
 case x$sendfds in
 xyes)
         AC_DEFINE([HAVE_SENDMSG],1,[Define if your platform supports sendmsg])