'builtin-baseline' in vcpkg for installing Franka Matlab?

Question

I want to install the Matlab Extension from LibFranka according to

After installing Visual Studio, they state i should install vcpkg, add it to the PATH and run

vcpkg install eigen3:x64-windows

However, the error message

error: this vcpkg instance requires a manifest with a specified baseline in order to interact with ports. Please add 'builtin-baseline' to the manifest or add a 'vcpkg-configuration.json' that redefines the default registry.

is yielded. I looked the documentation of vcpkg, but I have no clue what to put in which json file.

I tried adding a vcpkg-configuration.json but this file was ignored. I read in a forum, that a vcpkg.json has to exist but I dont know what to fill in, otherwise it states "Unexpected EOF in vcpkg.json".

I read that vcpkg builtin-baseline are to specify versions, but I dont know what to put in. Please help.

Answer 1

If you're using the vcpkg supplied with VS in the recommended manifest mode, if you're just using vcpkg packages (rather than creating one), from a VS command prompt you can use:

vcpkg new --application

This will create 2 json files that should get you going.

Answer 2

I ran into this recently with an existing cmake project that had a vcpkg.json manifest file. Previously, I had been using the getting started instructions, until I saw that Visual Studio had listed vcpkg as an installation option (so I thought I'd used the built-in vcpkg).

Trying to find more, there was a comment in the versioning that mentioned running:

vcpkg x-update-baseline --add-initial-baseline

It appears to be an experimental command. It updated the vcpkg.json to have the builtin-baseline entry.

Other options appeared to be grabbing a commit hash value from the vcpkg commit history.