I just used LabVIEW 2020 + the NI LINX Toolkit to set up my Raspberry Pi 4 Model B
I selected Tools > MakerHub > LINX > LINX Target Configuration..., logged in, and then ran Installation. This dialog appeared:
It says, "The target's Linux partition is only using 0 GB of the available 15 GB. It is recommended that you expand the Linux partition before continuing to install LabVIEW."
However, my main Linux partition is plenty big. I had used NOOBS to install Raspbian Full, and it made full use of all available space on my SD card. This is what fdisk -l shows:
Device Boot Start End Sectors Size Id Type /dev/mmcblk0p1 8192 4990234 4982043 2.4G e W95 FAT16 (LBA) /dev/mmcblk0p2 4990235 31116287 26126053 12.5G 5 Extended /dev/mmcblk0p5 4997120 5062653 65534 32M 83 Linux /dev/mmcblk0p6 5062656 5586941 524286 256M c W95 FAT32 (LBA) /dev/mmcblk0p7 5586944 31116287 25529344 12.2G 83 Linux
I'm guessing that LINX assumed that the 32 MB partition is the main system partition, when it's actually the 12.2 GB one. This issue has been affecting devices initialized by NOOBS for years: https://www.labviewmakerhub.com/forums/viewtopic.php?f=12&t=1436
Anyway, I ignored the dialog and clicked "Continue". The rest of the setup proceeded just fine and I can now use LabVIEW to connect to my Raspberry Pi.
The LINX installer has 2 issues: