From: ellson <devnull@localhost>
Date: Fri, 23 Oct 2009 17:33:51 +0000 (+0000)
Subject: improve error message in the case of dot not finding dot_layout plugin
X-Git-Tag: LAST_LIBGRAPH~32^2~1635
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=1680c94c531270874c294f83339d4e040bc853a9;p=graphviz

improve error message in the case of dot not finding dot_layout plugin
---

diff --git a/lib/common/input.c b/lib/common/input.c
index 34fe1e403..e669a711b 100644
--- a/lib/common/input.c
+++ b/lib/common/input.c
@@ -261,6 +261,9 @@ void dotneato_args_initialize(GVC_t * gvc, int argc, char **argv)
     i = gvlayout_select(gvc, gvc->common.cmdname);
     if (i == NO_SUPPORT) {
 	fprintf(stderr, "There is no layout engine support for \"%s\"\n", gvc->common.cmdname);
+        if (streq(gvc->common.cmdname, "dot")) {
+	   fprintf(stderr, "Perhaps \"dot -c\" needs to be run by root to register the plugins?\n");
+	}
 	exit(1);
     }