I'm trying to create a local port for a github package which doesn't have a vcpkg port

[perdrix52]

I thought that what I needed to do was to add a directory to my project's "overlay ports" directory containing the usual files. But when I added the smtpmime directory to my "overlay ports" directory, and added smtpmime to vcpkg.json I was told:

1> [CMake] error: the baseline does not contain an entry for port smptmime

So, I'm clearly not doing this right.

What should I do to create a local port of this? I prefer not to have to attack the content of my vcpkg ports directory if possible.

I'm clearly missing something here. The example for adding libogg seems to assume I will be adding a new directory to the ports directory of the vcpkg installation.

[perdrix52]

Ok so I created a directory tree:

with the ports/smtpmime containing:

19/06/2025  11:23               951 portfile.cmake
19/06/2025  09:06               212 usage
19/06/2025  09:06               340 vcpkg.json

and versions containing:

19/06/2025  10:13               140 baseline.json
19/06/2025  10:13    <DIR>          s

baseline.json contains:

{
    "default":
    {
        "smtpmime":
        {
            "baseline": "2.0",
            "port-version": 0
        }
    }
}

I then changed my vcpkg-configuration.json to look like:

{
  "registries": [
    {
      "kind": "artifact",
      "location": "https://github.com/microsoft/vcpkg-ce-catalog/archive/refs/heads/main.zip",
      "name": "microsoft"
    },
    {
      "kind": "filesystem",
      "path": "./vcpkg-registry",
      "baseline": "baseline",
      "packages": [ "smtpmime" ]
    }
  ],
  "overlay-ports": [
    "./vcpkg_overlay_ports"
  ]
}

but I still get:

1> [CMake] -- Running vcpkg install
1> [CMake] error: the baseline does not contain an entry for port smptmime

So not seeing what's wrong.

D.

[perdrix52]

I'm fairly sure that its my changes to vcpkg-configuration.json that are wrong. Here's what it said before I changed it:

{
  "registries": [
    {
      "kind": "artifact",
      "location": "https://github.com/microsoft/vcpkg-ce-catalog/archive/refs/heads/main.zip",
      "name": "microsoft"
    }
  ],
  "overlay-ports": [
    "./vcpkg_overlay_ports"
  ]
}

[perdrix52]

I changed the vcpkg-configuration.json to read:

{
  "registries": [
    {
      "kind": "filesystem",
      "path": "./vcpkg-registry",
      "baseline": "baseline",
      "packages": [ "smtpmime" ]
    },
    {
      "kind": "artifact",
      "location": "https://github.com/microsoft/vcpkg-ce-catalog/archive/refs/heads/main.zip",
      "name": "microsoft"
    }
  ],
  "overlay-ports": [
    "./vcpkg_overlay_ports"
  ]
}

and now get a different error:

1> [CMake] -- Running vcpkg install
1> [CMake] D:\Github\DSS\./vcpkg-registry\versions\baseline.json: error: missing required field 'baseline' (a baseline object)
1> [CMake] while loading baseline version for smtpmime
1> [CMake] -- Running vcpkg install - failed

but ./vcpkg-registry/versions/baseline.json reads:

{
    "default":
    {
        "smtpmime":
        {
            "baseline": "2.0",
            "port-version": 0
        }
    }
}

Which DOES contain the baseline field? What am I missing?
D.

[perdrix52]

I've created an issue for this. #46102