From fa2f7b0b9b7d1087bd09f8e086c6403515bbdd3d Mon Sep 17 00:00:00 2001 From: Philippe Mathieu-Daudé Date: Mon, 25 Jan 2021 15:45:30 +0100 Subject: meson: Warn when TCI is selected but TCG backend is available Some new users get confused with 'TCG' and 'TCI', and enable TCI support expecting to enable TCG. Emit a warning when native TCG backend is available on the host architecture, mentioning this is a suboptimal configuration. Reviewed-by: Thomas Huth Suggested-by: Daniel Berrangé Signed-off-by: Philippe Mathieu-Daudé Reviewed-by: Daniel P. Berrangé Message-Id: <20210125144530.2837481-5-philmd@redhat.com> Signed-off-by: Paolo Bonzini --- meson.build | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/meson.build b/meson.build index 3a13ba3307..4cc3ebb827 100644 --- a/meson.build +++ b/meson.build @@ -231,6 +231,13 @@ if not get_option('tcg').disabled() else error('Unsupported CPU @0@, try --enable-tcg-interpreter'.format(cpu)) endif + elif get_option('tcg_interpreter') + warning('Use of the TCG interpretor is not recommended on this host') + warning('architecture. There is a native TCG execution backend available') + warning('which provides substantially better performance and reliability.') + warning('It is strongly recommended to remove the --enable-tcg-interpreter') + warning('configuration option on this architecture to use the native') + warning('backend.') endif if get_option('tcg_interpreter') tcg_arch = 'tci' -- cgit v1.2.3-55-g7522