bazel/tcl: migrate from rules_hdl tcl to bazel BCR tcl version

[fredowski]

The tcl version in the bazel central registry supports MacOS and it can be used via MODULES.bazel instead of WORKSPACE.

[hzeller]

@QuantamHD @maliberty Can you have a look and merge ?
That then will make it possible to get The-OpenROAD-Project/OpenROAD#9490 ready.

[hzeller]

@QuantamHD @maliberty can you approve and merge ?

[hzeller]

mmh, looks like OpenROAD/src/sta already contains the necessary tcl change ?

[hzeller]

Ah, looks like this accidentally worked as the other PR updated this fork in a separate commit.
https://github.com/The-OpenROAD-Project/OpenSTA/tree/7937b647b608b7d04ffc21ca9ed74c42c818f330

So that commit is disconnected from anything.

So this PR still needs to be merged, to then have a clean submodule update in OpenROAD.

[fredowski]

Yes, this is github magic. The commit is in my forked OpenSTA. For me it looks like this:

The bazel-tcl branch is the one from the tcl pr.

[QuantamHD]

I pinged @maliberty

[maliberty]

I am holding PRs to this repo while we sort out if we will need a CLA or the like (as in the parallax repo). Hopefully it will be quick but I want ensure contributions are correctly handled.

[hzeller]

This only modifies a file that is only in this OpenROAD-Project fork, the BUILD file, so it should not be impacted by CLA requirements on Parallax upstream.

So it only affects the OpenROAD project directly (making the build work with the BCR tcl) and thus should be covered by the OpenROAD CLA that @fredowski already signed.

[povik]

"should be covered by the OpenROAD CLA" - What CLA would that be? I'm not aware of any.

[hzeller]

Ah right, there might not be one. In any case, whatever requirements are good enough for OpenROAD should be good enough for changing a BUILD file here, as it is only provided in this fork and used in OpenROAD.

[maliberty]

The existing BUILD file was created by me and so its wasn't a concern (all my work is covered by PII employment contract). It is unclear that we can say which things are GPL and which aren't in general so we need a proper solution. Sorry for the delay but this is part of bringing up this repo as more than a near mirror of Parallax.

[CLAassistant]

All committers have signed the CLA.

[maliberty]

Please sign the CLA and we can merge this and your other PR

[fredowski]

Please sign the CLA and we can merge this and your other PR

I signed that CLA.