Since 7.7.299.10-1 v8 uses standard lib paths as requested (apart what is needed to run d8).
For specific uses like R, I strongly recommend the package v8-r which has a custom configuration for R.
Notes
Latest version is based on the version on branch-heads from the V8 repositories. I stick to stable, but sometimes I could use beta, I never use dev (check this: https://omahaproxy.appspot.com/).
This is a “generic” configuration, v8 is highly configurable, if you need v8 for some specific integration please check the Google documentation.
Prefer yay/aurman instead of yaourt/pacaur.
Gclient has to download the whole V8 repository, it takes some time to complete (depending on your internet connection).
This package requires between 3 and 4 gigs of disc space so be sure to have a large enough /tmp partition if you use yaourt, also be aware that aurman/yay/pacaur will save this package in ~/.cache/(aurman|yay|pacaur)/v8, so be sure to have a /home partition with enough space.
The build and testing process takes some time, I recommend to use at least a 4 cores with 8 threads cpu, better an 8 cores 16 threads cpu.
If you have at least 32GB of RAM you can use a ram partition to speed up the build process (yaourt uses /tmp by default).
