New comment by sgn on void-packages repository

https://github.com/void-linux/void-packages/pull/25655#issuecomment-712243897

Comment:
@fosslinux I don't know, I think I've run the build inside chroot without `texinfo`, but I haven't build `m4` in a while. I could try that later. I guess you mean something like:

```diff
diff --git a/srcpkgs/m4/template b/srcpkgs/m4/template
index 111dc6a6b07..6db163696da 100644
--- a/srcpkgs/m4/template
+++ b/srcpkgs/m4/template
@@ -14,6 +14,11 @@ maintainer="Enno Boland <gottox@voidlinux.org>"
 distfiles="${GNU_SITE}/${pkgname}/${pkgname}-${version}.tar.xz"
 checksum=f2c1e86ca0a404ff281631bdc8377638992744b175afb806e25871a24a934e07
 
+# Ubuntu 20.04 makeinfo breaks the build with ISO-8859-1 characters
+if [ ! "$CHROOT_READY" ]; then
+	export MAKEINFO=true
+else
+	hostmakedepends="texinfo"
+fi
+
 pre_check() {
 	case "$XBPS_TARGET_MACHINE" in
 		*-musl* )

```