Add --enable-embedded-help option to embed --help messages in binaries

[lttng-tools.git] / src / bin / lttng / commands / view.c

diff --git a/src/bin/lttng/commands/view.c b/src/bin/lttng/commands/view.c
index 44e0cb015c93e90bc31cc553bead112f368602cd..c9a5fdc3e09b0f356096a25a051c55d730ea86c8 100644 (file)
--- a/src/bin/lttng/commands/view.c
+++ b/src/bin/lttng/commands/view.c
@@ -32,6 +32,12 @@ static char *opt_trace_path;
 static const char *babeltrace_bin = CONFIG_BABELTRACE_BIN;
 //static const char *lttv_gui_bin = CONFIG_LTTV_GUI_BIN;
 
+#ifdef LTTNG_EMBED_HELP
+static const char help_msg[] =
+#include <lttng-view.1.h>
+;
+#endif
+
 enum {
        OPT_HELP = 1,
        OPT_LIST_OPTIONS,
@@ -78,30 +84,6 @@ static struct viewers {
 /* Is the session we are trying to view is in live mode. */
 static int session_live_mode;
 
-/*
- * usage
- */
-static void usage(FILE *ofp)
-{
-       fprintf(ofp, "usage: lttng view [SESSION_NAME] [OPTIONS]\n");
-       fprintf(ofp, "\n");
-       fprintf(ofp, "By default, the babeltrace viewer will be used for text viewing\n");
-       fprintf(ofp, "\n");
-       fprintf(ofp, "Where SESSION_NAME is an optional session name. If not specified, lttng will\n");
-       fprintf(ofp, "get it from the configuration file (.lttngrc).\n");
-       fprintf(ofp, "\n");
-       fprintf(ofp, "Options:\n");
-       fprintf(ofp, "  -h, --help               Show this help\n");
-       fprintf(ofp, "      --list-options       Simple listing of options\n");
-       fprintf(ofp, "  -t, --trace-path PATH    Trace directory path for the viewer\n");
-       fprintf(ofp, "  -e, --viewer CMD         Specify viewer and/or options to use\n");
-       fprintf(ofp, "                           This will completely override the default viewers so\n");
-       fprintf(ofp, "                           please make sure to specify the full command. The trace\n");
-       fprintf(ofp, "                           directory path of the session will be appended at the end\n");
-       fprintf(ofp, "                           to the arguments\n");
-       fprintf(ofp, "\n");
-}
-
 static struct viewers *parse_options(void)
 {
        if (opt_viewer == NULL) {
@@ -277,12 +259,12 @@ static int spawn_viewer(const char *trace_path)
                } else {
                        PERROR("exec: %s", viewer_bin);
                }
-               free(argv);
                ret = CMD_FATAL;
                goto error;
        }
 
 error:
+       free(argv);
        return ret;
 }
 
@@ -444,13 +426,12 @@ int cmd_view(int argc, const char **argv)
        while ((opt = poptGetNextOpt(pc)) != -1) {
                switch (opt) {
                case OPT_HELP:
-                       usage(stdout);
+                       SHOW_HELP();
                        goto end;
                case OPT_LIST_OPTIONS:
                        list_cmd_options(stdout, long_options);
                        goto end;
                default:
-                       usage(stderr);
                        ret = CMD_UNDEFINED;
                        goto end;
                }