Installing emacs for mac from sources: execute ./configure but 'no such file or directory'

[lichgo]

I'm a beginner in this area. I have cloned the sources of emacs from github. As stated in INSTALL file, I executed ./configure but the terminal showed 'no such file or directory'.

I checked the files. There are two similar files, configure.in and config.bat. I don't know whether these two files is relevant to the installment.

Thank you very much.