On Wed, 2020-05-27 at 15:44 +0800, Truong Term wrote: > I downloaded this one > http://gnuwin32.sourceforge.net/packages/make.htm
That site is not part of the GNU project or the FSF. If you want help using that version please refer to their support lists: http://gnuwin32.sourceforge.net/ http://gnuwin32.sourceforge.net/lists.html However it seems they have not updated their software in a long time. I can't say for sure whether your example will work with the current released version of GNU make (4.3), but that version of GNU make (3.81) was released in 2006 and is definitely no longer supported. There may be other places to find pre-compiled binaries for Windows that are more up-to-date. Or you can compile the latest version yourself from source.