18.06 build failure

I am getting this error/warnings when trying to build an image for GL-AR750. I do not think I saw these before: am I doing something wrong here?

Create index file './feeds/telephony.index' 
ERROR: please fix feeds/telephony/net/freeswitch/Makefile - see logs/feeds/telephony/net/freeswitch/dump.txt for details
Collecting package info: done
Collecting target info: done
Collecting package info: done
Collecting target info: done
WARNING: Makefile 'package/utils/busybox/Makefile' has a dependency on 'libpam', which does not exist
WARNING: Makefile 'package/utils/busybox/Makefile' has a build dependency on 'libpam', which does not exist
WARNING: Makefile 'package/network/utils/curl/Makefile' has a dependency on 'libgnutls', which does not exist
WARNING: Makefile 'package/network/utils/curl/Makefile' has a dependency on 'libopenldap', which does not exist
WARNING: Makefile 'package/network/utils/curl/Makefile' has a dependency on 'libidn2', which does not exist
WARNING: Makefile 'package/network/utils/curl/Makefile' has a dependency on 'libssh2', which does not exist
WARNING: Makefile 'package/boot/kexec-tools/Makefile' has a dependency on 'liblzma', which does not exist
WARNING: Makefile 'package/network/services/lldpd/Makefile' has a dependency on 'libnetsnmp', which does not exist
Installing all packages from feed packages.
Installing package 'acl' from packages

Might need:

./scripts/feeds install -a

Below is what I am running. The error above I get after the feed update -a step.

git clone https://git.openwrt.org/openwrt/openwrt.git .
git checkout openwrt-18.06
./scripts/feeds update -a
./scripts/feeds install -a

Then the feeds instal -a step gives me this

ERROR: please fix package/feeds/telephony/freeswitch/Makefile - see logs/package/feeds/telephony/freeswitch/dump.txt for details

And the last line in dump.txt is below:

make[2]: *** No rule to make target '../perl/perlver.mk'. Stop

make defconfig;make oldconfig

seems to get things in order.

some stuff

These steps worked fine on the branch earlier today.

I am creating a brand new workspace; that thread is about updating an existing one.

That post was not about the whole thread, but the one post that I linked. I just did the above and got no error, after doing the make *config bits.

I saw the same issue

git clone https://git.lede-project.org/source.git lede
cd lede
./scripts/feeds update -a
...
Create index file './feeds/telephony.index' 
**ERROR: please fix feeds/telephony/net/freeswitch/Makefile - see logs/feeds/telephony/net/freeswitch/dump.txt for details**
Collecting package info: done
Collecting target info: done

And re-run ./scripts/feeds update -a
successful, no error out.

Create index file './feeds/routing.index' 
Updating feed 'telephony' from 'https://git.openwrt.org/feed/telephony.git' ...
Already up-to-date.
Create index file './feeds/telephony.index'