I had gotten most of way on OpenBSD. Here are some notes of anyone get it over finish line.

1. **git**:

- Install via pkg: `sudo pkg install git`

2. **build-essential**:

- Install `gcc` and `make`, you can run the following commands:

```

sudo pkg install gcc

sudo pkg install gmake

```

3. **libyaml-perl**, **libtemplate-perl**, **libregexp-grammars-perl**:

- You can install these Perl modules using the `cpan` command, e.g.:

```

sudo cpan install YAML

sudo cpan install Template

sudo cpan install Regexp::Grammars

```

4. **libssl-dev**:

- Install via pkg: `sudo pkg install openssl`.

5. **zlib1g-dev**:

- Install via pkg: `sudo pkg install zlib`.

6. **liblmdb-dev**:

- Install via pkg: `sudo pkg install lmdb`.

7. **libflatbuffers-dev**:

- Install via pkg: `sudo pkg install flatbuffers`.

8. **libsecp256k1-dev**:

- Install via pkg: `sudo pkg install libsecp256k1`.

9. **libzstd-dev**:

- Install via pkg: `sudo pkg install zstd`.