Building m4 from source on FreeBSD error: don't know how to make ../../build-aux/snippet/c++defs.h

I'm using FreeBSD 13.0-CURRENT (for more information see [here](http://mpuw-um9c5.byethost4.com/unamea.txt)) , and I want to use [GNU m4](https://www.gnu.org/software/m4/m4.html) . Downloaded [this version](ftp://ftp.gnu.org/gnu/m4/m4-latest.tar.xz) of it, configured, and tried to make. But it gives error as stated in the title: error: don't know how to make ../../build-aux/snippet/c++defs.h. For the whole log, [see here](http://mpuw-um9c5.byethost4.com/m4make.log) . Any idea? Thanks to all suggestions and answers. EDIT1: indeed, my m4 version is 1.4.17.