tree d90dc630d6169587c9c7ccd78c684015857a54a1
parent 9cc6bd0f710fd2674d3923765748a98b85734151
author hlopko <hlopko@google.com> 1483971147 +0100
committer Marcel Hlopko <hlopko@google.com> 1547020329 +0100

Introduce expand_if_none_available to crosstool

This feature allows us to expand a flag_group when a build variable is not
available. This is helpful when migrating crosstools in a backward compatible
way (that works with released bazel as well as with bazel at HEAD).

RELNOTES: NONE.
PiperOrigin-RevId: 143955333