cli: put the project's version on the first line with no args.

This is to ensure backward compatibility with Babeltrace 1.x, especially
for the LTTng analyses project which check the Babeltrace's version this
way because of a missing --version option.

Reported-by: Michael Jeanson <mjeanson@efficios.com>
Signed-off-by: Philippe Proulx <eeppeliteloop@gmail.com>

diff --git a/cli/babeltrace-cfg-cli-args.c b/cli/babeltrace-cfg-cli-args.c
index ad83e4c3254592e96d180648300192508c912950..293b0fe44654eb7b1995b1fd22f144109f9ea9aa 100644 (file)
--- a/cli/babeltrace-cfg-cli-args.c
+++ b/cli/babeltrace-cfg-cli-args.c
@@ -4842,6 +4842,8 @@ struct bt_config *bt_config_cli_args_create(int argc, const char *argv[],
        }
 
        if (argc <= 1) {
+               print_version();
+               puts("");
                print_gen_usage(stdout);
                goto end;
        }