tree 70bd7be8916bd2a68fc8d5f150ba17277a9ab288
parent fd08e9ad243184e154e987c10cd0c074a9a9d60e
author Sam Clegg <sbc@chromium.org> 1637337993 -0800
committer Sam Clegg <sbc@chromium.org> 1645767874 -0800

Add mechanism to override OS (for testing purposes)

Similar to `EMSDK_ARCH` which I added in #935.