suppress repack commands' error message

libs/libpcf/src/io/pcf_reader.cpp

@@ -57,12 +57,17 @@ int read_pcf(const char* fname, PcfData& pcf_data) {
           pcf_data.set_io_pin(io_id, pin_name);
         } else if (word[0] == COMMENT) {  // if it's a comment
           break;  // or ignore the full line comment and move on
+        } else if (word.find("set_clk") == 0 || word.find("set_reset") == 0) {
+          /* set_clk and set_rest are known commands for Arkangel, disable the
+           * error message for these two commands when call read_pcf function
+           */
+          break;
         } else {
-          /* Reach unknown command, error out */
+          /* Reach unknown command for OpenFpga, error out */
           VTR_LOG_ERROR("Unknown command '%s'!\n", word.c_str());
           num_err++;
-          break;  // and move onto next line. without this, it will accept more
-                  // following values on this line
+          break;  // and move onto next line. without this, it will accept
+                  // more following values on this line
         }
       }
     }