kmod: fixed to only (re)generate manpages if libxslt is available

base/kmod/kmod.conf

@@ -25,6 +25,11 @@ for x in zlib xz; do
 	fi
 done
 
+# xsltproc is needed to generate manpages
+if ! pkginstalled -f libxslt; then
+	var_append extraconfopt ' ' "--disable-manpages"
+fi
+
 pkg_kmod_symlinks() {
 	# kmod is a multicall binary
 	# Note: depmod and modprobe *must* be available in /sbin because