If you create an oracle virtualbox of linux to build rocketboard, uboot, kernal, yocto, etc…
make sure you set the virtual harddisk size to less than 1T… I set mine it to 2T initially,
and the gcc crosscompile fails with a weird and cryptic error
“cc1: fatal err: Value too large for defined data type”
Then, I created another linux virtual machine with virtual harddisk size of 512 GB and the “cc1” error went away…
Another problem I had getting vitualbox to work was the default memory size. definately don’t go with the default memory size, the “git” of linux-kernal will use all your memory and hang the box. I had to set this to the max “green” bar value in the memory settings for virtualbox.