vl: deprecate -no-frame

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Message-id: 20180202111022.19269-2-kraxel@redhat.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>

qemu-doc.texi

@@ -2741,6 +2741,13 @@ filesystem test suite. Also it requires the CAP_DAC_READ_SEARCH capability,
 which is not the recommended way to run QEMU. This backend should not be
 used and it will be removed with no replacement.
 
+@subsection -no-frame (since 2.12.0)
+
+The ``-no-frame'' argument works with SDL 1.2 only.  SDL 2.0 lacks
+support for frameless windows, and the other user interfaces never
+implemented this in the first place.  So this will be removed together
+with SDL 1.2 support.
+
 @section qemu-img command line arguments
 
 @subsection convert -s (since 2.0.0)

vl.c

@@ -2105,6 +2105,8 @@ static DisplayType select_display(const char *p)
             const char *nextopt;
 
             if (strstart(opts, ",frame=", &nextopt)) {
+                g_printerr("The frame= sdl option is deprecated, and will be\n"
+                           "removed in a future release.\n");
                 opts = nextopt;
                 if (strstart(opts, "on", &nextopt)) {
                     no_frame = 0;
@@ -3639,6 +3641,8 @@ int main(int argc, char **argv, char **envp)
                 full_screen = 1;
                 break;
             case QEMU_OPTION_no_frame:
+                g_printerr("The -no-frame switch is deprecated, and will be\n"
+                           "removed in a future release.\n");
                 no_frame = 1;
                 break;
             case QEMU_OPTION_alt_grab: