Minor fixes in show command

diff --git a/passes/cmds/show.cc b/passes/cmds/show.cc
index 87504a33f15905429f63333c489cf7e60702d303..3c4ce85d89f4dac329235acc0a3887d201835fec 100644 (file)
--- a/passes/cmds/show.cc
+++ b/passes/cmds/show.cc
@@ -759,7 +759,7 @@ struct ShowPass : public Pass {
                }
                extra_args(args, argidx, design);
 
-               if (format != "ps") {
+               if (format != "ps" && format != "dot") {
                        int modcount = 0;
                        for (auto &mod_it : design->modules_) {
                                if (mod_it.second->get_bool_attribute("\\blackbox"))
@@ -770,7 +770,7 @@ struct ShowPass : public Pass {
                                        modcount++;
                        }
                        if (modcount > 1)
-                               log_cmd_error("For formats different than 'ps' only one module must be selected.\n");
+                               log_cmd_error("For formats different than 'ps' or 'dot' only one module must be selected.\n");
                }
 
                for (auto filename : libfiles) {
@@ -806,7 +806,7 @@ struct ShowPass : public Pass {
                        log_cmd_error("Nothing there to show.\n");
 
                if (format != "dot" && !format.empty()) {
-                       std::string cmd = stringf("dot -T%s -o '%s.new' '%s' && mv '%s.new' '%s'", format.c_str(), out_file.c_str(), dot_file.c_str(), out_file.c_str(), out_file.c_str());
+                       std::string cmd = stringf("dot -T%s '%s' > '%s.new' && mv '%s.new' '%s'", format.c_str(), dot_file.c_str(), out_file.c_str(), out_file.c_str(), out_file.c_str());
                        log("Exec: %s\n", cmd.c_str());
                        if (run_command(cmd) != 0)
                                log_cmd_error("Shell command failed!\n");