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build: do not build runfile trees unnecessarily (#36914) 

Disables Bazel runfile tree creation. Only if a given
execution strategy relies on runfile tree creation, the
runfile tree is created lazily. This helps as currently
Bazel spends unnecessary time on CI building runfile trees
for tests which are cached and aren't re-run.

The goal is to spend less time on CI for cached test/build
targets. We can't measure impact yet as there are targets
for the integration tests that hide the potential benefits.
on the components repo a 80% time reduction could be observed.

PR Close #36914
This commit is contained in:
Paul Gschwendtner 2020-05-04 14:26:03 +02:00 committed by Alex Rickabaugh
parent 2ff4b357d7
commit b7fb92a048
1 changed files with 5 additions and 0 deletions
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5
.bazelrc
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@ -33,6 +33,11 @@ build --incompatible_strict_action_env
run --incompatible_strict_action_env
test --incompatible_strict_action_env
# Do not build runfile trees by default. If an execution strategy relies on runfile
# symlink teee, the tree is created on-demand. See: https://github.com/bazelbuild/bazel/issues/6627
# and https://github.com/bazelbuild/bazel/commit/03246077f948f2790a83520e7dccc2625650e6df
build --nobuild_runfile_links
###############################
# Release support #
# Turn on these settings with #