configure.ac poll: Use an AC_MESG_WARN if !HAVE_POLL on non-Windows platforms

diff --git a/configure.ac b/configure.ac
index a810c616b13b30be0637c235bcf50c40237b56d1..b5eebe464d869c7dadd1182c60ffe877638a402e 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -811,7 +811,12 @@ AC_CHECK_TYPE(ssize_t,, [
 ])
 
 dnl Check for poll
-AC_SEARCH_LIBS(poll, [poll], [AC_DEFINE(HAVE_POLL, 1, [Define to 1 if the OS is usabl... err, has poll().])])
+AC_SEARCH_LIBS(poll, [poll], [AC_DEFINE(HAVE_POLL, 1, [Define to 1 if the OS is usabl... err, has poll().])], [
+if test ${SYS} != "mingw32"
+then
+    AC_MSG_WARN([Your platform does not support poll(). VLC has it's own poll() implementation, but it is only intended to be used on Windows. VLC might crash or be insecure when you see this message. Either switch to an OS with a proper poll() implementation, or implement one for your OS in VLC])
+fi
+])
 
 dnl Check for dirent
 need_dirent=false