How can I use "Makefile.in" for building an executable program?
 

There is a file "Makefile.in" in the folder with the package ncftp.As the position of the file is "./ncftp/sh_uil/Makefile.in",I use the command "make ./Makefile.in". The echo is "make:Noting to be done for Makefile.in".

So what should I type if I want to build the program "ncftpls".

Thank you!

If you look, there's probably a script in that directory called "configure". What you need to do is run it, and it will generate a Makefile (useable by make) from the Makefile.in. Like so:

./configure

Run it with --help to get a (probably long) list of options that will affect the way the Makefile is generated.