On Thu, 18 Nov 2021 07:17:07 GMT, Yasumasa Suenaga <ysuen...@openjdk.org> wrote:
> configure script distinguish WSL version if it is run on WSL. It is assumed > WSL 2 if `/run/WSL` exists. > However it exists in spite of WSL 1 on Windows 11 at least. We need to check > it with other method. > > The method to distinguish WSL version has been discussed on > https://github.com/microsoft/WSL/issues/4555 , however they do not seem to > get consensus about it. `/run/WSL` was introduced in it, but I think > `Hyper-V` in `/proc/interrupt` is more robustness because WSL 2 is run on > Hyper-V. > https://docs.microsoft.com/en-us/windows/wsl/faq#does-wsl-2-use-hyper-v--will-it-be-available-on-windows-10-home- Marked as reviewed by erikj (Reviewer). make/autoconf/basic_windows.m4 line 39: > 37: # distinguishing between WSL1 and WSL2. > 38: # Check whether "Hyper-V" appears in /proc/interrupts because WSL2 > runs on Hyper-V. > 39: grep Hyper-V /proc/interrupts > /dev/null 2>&1 You could use the -q switch to grep instead of piping to /dev/null. ------------- PR: https://git.openjdk.java.net/jdk/pull/6446
