Currently '-display help' only prints the available backends. Some
of those backends support suboptions (e.g. '-display gtk,gl=on').
Mention that in the help output, and point the user to where they
might be able to find more information about the suboptions.
The new output looks like this:
$ qemu-system-aarch64 -display help
Available display backend types:
none
gtk
sdl
egl-headless
curses
spice-app
dbus
Some display backends support suboptions, which can be set with
-display backend,option=value,option=value...
For a short list of the suboptions for each display, see the top-level -help
output; more detail is in the documentation.
Signed-off-by: Peter Maydell <peter.mayd...@linaro.org>
---
The ideal here would be to programmatically list all the
suboptions, so you could say '-display gtk,help', but that
seems like a lot of work and I'm not entirely sure how
to do it :-)
---
ui/console.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/ui/console.c b/ui/console.c
index e8f0083af71..105a0e2c708 100644
--- a/ui/console.c
+++ b/ui/console.c
@@ -1632,4 +1632,9 @@ void qemu_display_help(void)
printf("%s\n", DisplayType_str(dpys[idx]->type));
}
}
+ printf("\n"
+ "Some display backends support suboptions, which can be set with\n"
+ " -display backend,option=value,option=value...\n"
+ "For a short list of the suboptions for each display, see the "
+ "top-level -help output; more detail is in the documentation.\n");
}
--
2.34.1
