How do I run objcgen directly to do .NET Embedding on MacOS - ios

Question

I followed the instructions at Installing .NET Embedding and...
I installed Visual Studio 2019 on my Mac 10.14.6
I created a Xamarin.ios class lib project
I installed Nuget Embeddinator-4000
I added a hello world function: void main(){ Console.WriteLine("hello world");}...
I built without problem.
The next instruction says to.....
Running manually
Now that the NuGet is installed, you can run the tooling by hand.
Open a Terminal (macOS) or Command Prompt (Windows)
Change directory to your solution root
The tooling is installed in:
./packages/Embeddinator-4000.[VERSION]/tools/objcgen (Objective-C)
./packages/Embeddinator-4000.[VERSION]/tools/Embeddinator-4000.exe
On macOS, objcgen can be run directly.
...But there is no ./packages/ directory <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
> Last login: Fri Mar 6 10:05:48 on ttys002
> DOUGs-MacBook-Pro:Embedding_2020-03-06 dbell$ ls -l total 24
> -rw-r--r-- 1 dbell staff 2193 Mar 6 09:02 Embedding_2020-03-06.csproj
> -rw-r--r-- 1 dbell staff 827 Mar 6 08:58 Embedding_2020-03-06.sln
> -rw-r--r-- 1 dbell staff 249 Mar 6 09:03 HelloWorld.cs drwxr-xr-x 3 dbell staff 96 Mar 6 08:58 Properties drwxr-xr-x 3 dbell
> staff 96 Mar 6 08:58 bin drwxr-xr-x 8 dbell staff 256 Mar 6
> 09:03 obj DOUGs-MacBook-Pro:Embedding_2020-03-06 dbell$ ls ./packages
> ls: ./packages: No such file or directory <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
> DOUGs-MacBook-Pro:Embedding_2020-03-06 dbell$

Answer 1

Ah, hah! The objcgen tools need to first be built. I found instructions how at Github > Embeddinator-4000 > README.md > "Building".
Summary -- installation of .NET to Objective-C converter...
1. Clone github > Embeddinator-4000
git clone https://github.com/mono/Embeddinator-4000.git
2. cd into the cloned dir
3. Install other stuff:
git submodule update --recursive --init
4. Build the .NET to Objective-C converter:
cd objcgen
make
5. Build the 'wrapper' (ie. command access) to objcgen (took 10-15 minutes for me):
make nuget
6. Generate Objective-C from your .NET C# class lib
7. <somewhere in the bowels of your Mac>/Embeddinator-4000/objcgen/_build/objcgen <elsewhere in the bowels of your Mac>/hello-from-csharp/hello-from-csharp/bin/Debug/hello_from_csharp.dll --target=framework --platform=iOS --outdir=output -c --debug
NOTE: hello-from-csharp is from MICROSOFT DOC .NET EMBEDDING HELLO WORLD