To play NS, download version 2.27, use VC compilation, report error Makefile error Makefile error: Do not know STD ... Start to change the source file to the source file. . . . . . . . . (Changed 1 hour or more) The last few folders, an error: Cannot not nmake .tcl file? ? ! ! Cygwin install success! ! ! Start doing tests, find problems, debugging! Reporting: You can't find some file to see Configure, then ./configure --enable-debug compiles the connection. . . Still can't debug watching Makefile, I found that the OPT project is empty, very angry, manually add -g compile connection. . . Still can't be debugged. . . miss you. . . miss you. . . miss you. . . Clear all .o, compile the connection again. EXE is 3 times, and the confidence is full of debugging, and will continue to fail. . . Finish decision is debugged by the file output. . . Coding. . . Coding. . . Compilation. . . Inclination. . . Compilation. . . connection. . . run. . . Run an error. . . It is unable to comprehend. . . Think of the version problem, download the old version V.2.26 Unable to install V 2.18 Unable to install (an error after each installation is about 15 minutes) Google! Cygwin needs patch. . . Take the patch. . . How to play patch? Abandon, or V2.27 is done. . . Try debugging. . . Actually success! ! ! ? ? ? 2:00. . . When SIGN was in a way, I wrote me for 2 days to get a program. . .