I've just posted some fixes and enhancements to the GRASS binaries on this site. It looks like it will not be easy (maybe not possible) to build GRASS with libLAS support for direct LiDAR processing the way I am now compiling binaries. There is hope for the future if the GRASS team adopts PDAL as a replacement for no longer supported libLAS (in the works). In the meantime, I've added LAStools command line tools for LiDAR processing and translation to ASCII formats that GRASS can read. Type lasinfo [return] from the command line to see some of this, with more information at: https://rapidlasso.com/lastools/
Also, I've managed to add a fix to a problem found by Rob Shepard. Attempting to create a new LOCATION from an EPSG code failed. It works now. These should all be available in the fully bundled GRASS binaries on the download page.