National Instruments (who make LabVIEW) have recently released a Raspberry Pi driver for a couple of their lower-cost USB data acquisition modules:
https://decibel.ni.com/content/docs/DOC-25806
It's not LabVIEW for the Pi - which doesn't and may never exist - but it's a positive sign of support from NI!
I haven't tried this out, it would be interesting to hear if anyone else has...