option to test if the GUI is compiled in

Signed-off-by: Julien Desfossez <jdesfossez@efficios.com>

diff --git a/src/lttngtop.c b/src/lttngtop.c
index be5af54d601458994c0e4050b4dca4c94fe470a7..cce1901775067469f37bd29ab2ae5e258b4f3c24 100644 (file)
--- a/src/lttngtop.c
+++ b/src/lttngtop.c
@@ -106,6 +106,7 @@ enum {
        OPT_ALL,
        OPT_OUTPUT_FILE,
        OPT_VERBOSE,
+       OPT_GUI_TEST,
 };
 
 static struct poptOption long_options[] = {
@@ -122,6 +123,7 @@ static struct poptOption long_options[] = {
        { "all", 'a', POPT_ARG_NONE, NULL, OPT_ALL, NULL, NULL },
        { "output", 'o', POPT_ARG_STRING, &opt_output, OPT_OUTPUT_FILE, NULL, NULL },
        { "verbose", 'v', POPT_ARG_NONE, NULL, OPT_VERBOSE, NULL, NULL },
+       { "gui-test", 'g', POPT_ARG_NONE, NULL, OPT_GUI_TEST, NULL, NULL },
        { NULL, 0, 0, NULL, 0, NULL, NULL },
 };
 
@@ -689,6 +691,7 @@ void usage(FILE *fp)
        fprintf(fp, "  -r, --relay-hostname     Network live streaming : hostname of the lttng-relayd (default port)\n");
        fprintf(fp, "  -b, --begin              Network live streaming : read the trace for the beginning of the recording\n");
        fprintf(fp, "  -o, --output <filename>  In textdump, output the log in <filename>\n");
+       fprintf(fp, "  -g, --gui-test           Test if the ncurses support is compiled in (return 0 if it is)\n");
 }
 
 /*
@@ -789,6 +792,13 @@ static int parse_options(int argc, char **argv)
                                usage(stdout);
                                ret = 1;    /* exit cleanly */
                                goto end;
+                       case OPT_GUI_TEST:
+#ifdef HAVE_LIBNCURSES
+                               exit(EXIT_SUCCESS);
+#else
+                               exit(EXIT_FAILURE);
+#endif
+                               goto end;
                        case OPT_TEXTDUMP:
                                opt_textdump = 1;
                                break;