I'm trying to get the git commit id at build time with make on Windows.

On Linux Debian I can do it with

var := $(shell git rev-parse --verify master)

all:
    echo ${var} > file.txt
    cat file.txt

But on Windows 10 I get:

Error: Invalid macro invocation found in Makefile line 4

I'm using jom (a clone of nmake) which came with Qt 5.15 version.

Is it possible to do that with jom/nmake?