Apple: Usdrecord C++ port

[ld-kerley]

Description of Change(s)

C++ port of usdrecord.

There are a few minor changes in the command line arguments due to CLI11 not supporting arguments of the form -cam, instead we provide --cam.

GLFW is used to provide an OpenGL context on non macOS platforms, macOS doesn't require an OpenGL context to render with usdrecord.

build_usd.py has been updated to build GLFW when required.

Tests run and pass on both macOS and linux.

Fixes Issue(s)

• I have verified that all unit tests pass with the proposed changes

• I have submitted a signed Contributor License Agreement

[jesschimein]

Filed as internal issue #USD-9815

❗ Please make sure that a signed CLA has been submitted!

[jesschimein]

/AzurePipelines run

[azure-pipelines]

Azure Pipelines successfully started running 1 pipeline(s).

[dgovil]

@jesschimein sorry, had a snafu and I'll get Lee added to our CLA asap. Might be a hot minute just because the necessary folks are on vacation.

[nvmkuruc]

It's great to have a version of usdrecord available with less dependencies.

I was wondering if it's possible to provide a deprecation warning for users using the -cam argument if it's no longer going to be supported.

[ld-kerley]

I think any -cam deprecation warning would need to be in a separate PR applied to usdrecord.py, and would only be useful if released before this C++ port.

CLI11 doesn't not parse "short" options with more than one character, so we can't have -cam, but I have added --cam as the closest fallback.

[dgovil]

I wonder if we should include a -cam deprecation warning in the changelog for 24.8?
Technically, even in argparse, multi character short-commands are bug prone (-cam is ambiguously -c -a -m or -cam)

and yeah, like Lee suggests, it would have to be deprecated on the Python side. @meshula or @tcauchois do you have any thoughts?

[jesschimein]

/AzurePipelines run

[nvmkuruc]

@dgovil @ld-kerley Could you check for -cam in argv and output a warning before passing it to cli11?

[jesschimein]

/AzurePipelines run

[jesschimein]

/AzurePipelines run