tree bea70b3ef84618e16b8267abe6eb3d918205c352
parent 894835059979c99c8551f9d1c72de8f4a11290bc
author Petr Hosek <phosek@google.com> 1590686622 -0700
committer Commit Bot <commit-bot@chromium.org> 1591687246 +0000

Support specifying required Ninja version

Newer Ninja versions support features that may allow for faster, more
correct builds, but some GN users like Chromium are stuck at older
Ninja versions so we cannot use these features unconditionally.

This change introduces new .gn variable: ninja_required_version. This
variable is directly propagated to the generated Ninja file, and can
be also used inside GN to gate the use of certain features.

Change-Id: I95c0f6af2b62a6581a6055232eaf3e941803fd9b
Reviewed-on: https://gn-review.googlesource.com/c/gn/+/8721
Commit-Queue: Petr Hosek <phosek@google.com>
Reviewed-by: Brett Wilson <brettw@chromium.org>