Questions on building on Windows from a git clone

[clydegerber]

I'm trying to follow the instructions in Building from git and am running into a problem executing this command:

$ACE_ROOT/bin/mwc.pl -type vs2019 ACE.mwc

The error I'm getting is:

ERROR: Unable to find the MPC modules in C://ACE_TAO/ACE/MPC.
You can set the MPC_ROOT environment variable to the location of MPC.

I don't see an 'MPC' folder under "ACE_TAO/ACE" in the cloned repo (or in the origin). I do see that folder when I download the source zip file from https://download.dre.vanderbilt.edu/. If I copy that MPC folder to the ACE_TAO/ACE folder in the cloned repo the above command works.

Should there be an MPC folder in the git repo under ACE_TAO/ACE?

Thanks!

[iguessthislldo]

Yes, the release archives include MPC, but when building from the raw source you have to supply MPC yourself as it's a separate repository. The instructions seem to assume that and could be changed to be more clear. You could move the MPC from the release archive like you mentioned, but it's probably a better idea to clone MPC into ACE or somewhere else if you set MPC_ROOT like the error message mentions.

[clydegerber]

Thanks for the info.

[mitza-oci]

Also, this repository contains a GitHub Actions YAML file that may be helpful in that it shows each step used to build on Windows/MSVC.

https://github.com/DOCGroup/ACE_TAO/actions/runs/2325915632/workflow