There is a new pull request by fosslinux against master on the void-packages repository

https://github.com/fosslinux/void-packages m4-texinfo
https://github.com/void-linux/void-packages/pull/21162

m4: Add texinfo dependency and fix xlint
```
make[2]: Entering directory '/builddir/m4-1.4.18/doc'
  MAKEINFO m4.info
/builddir/m4-1.4.18/build-aux/missing: line 81: makeinfo: command not found
WARNING: 'makeinfo' is missing on your system.
         You should only need it if you modified a '.texi' file, or
         any other file indirectly affecting the aspect of the manual.
         You might want to install the Texinfo package:
         <http://www.gnu.org/software/texinfo/>
         The spurious makeinfo call might also be the consequence of
         using a buggy 'make' (AIX, DU, IRIX), in which case you might
         want to install GNU make:
         <http://www.gnu.org/software/make/>
make[2]: *** [Makefile:1535: m4.info] Error 127
make[2]: Leaving directory '/builddir/m4-1.4.18/doc'
make[1]: *** [Makefile:1572: install-recursive] Error 1
make[1]: Leaving directory '/builddir/m4-1.4.18'
make: *** [Makefile:1867: install] Error 2
```

A patch file from https://github.com/void-linux/void-packages/pull/21162.patch is attached