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Rollup merge of #89756 - jyn514:bootstrap-times, r=Mark-Simulacrum

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Greatly reduce amount of debuginfo compiled for bootstrap itself

Rather than compiling rustbuild and all its dependencies with
`debuginfo=2`, this compiles dependencies without debuginfo and
rustbuild with `debuginfo=1`. On my laptop, this brings compile times
down from ~1:20 to ~1:05.

See also https://rust-lang.zulipchat.com/#narrow/stream/242791-t-infra/topic/async.20in.20bootstrap.3F/near/254847594.

r? ``@Mark-Simulacrum``
This commit is contained in:
Matthias Krüger 2021-10-11 23:45:51 +02:00 committed by GitHub
commit 1be64f3431
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2 changed files with 10 additions and 2 deletions
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9
Cargo.toml
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@ -89,6 +89,15 @@ gimli.debug = 0
miniz_oxide.debug = 0 miniz_oxide.debug = 0
object.debug = 0 object.debug = 0
# The only package that ever uses debug builds is bootstrap.
# We care a lot about bootstrap's compile times, so don't include debug info for
# dependencies, only bootstrap itself.
[profile.dev]
debug = 0
[profile.dev.package]
# Only use debuginfo=1 to further reduce compile times.
bootstrap.debug = 1
# We want the RLS to use the version of Cargo that we've got vendored in this # We want the RLS to use the version of Cargo that we've got vendored in this
# repository to ensure that the same exact version of Cargo is used by both the # repository to ensure that the same exact version of Cargo is used by both the
# RLS and the Cargo binary itself. The RLS depends on Cargo as a git repository # RLS and the Cargo binary itself. The RLS depends on Cargo as a git repository

3
src/bootstrap/bootstrap.py
View File

@ -933,10 +933,9 @@ class RustBuild(object):
env["LIBRARY_PATH"] = os.path.join(self.bin_root(True), "lib") + \ env["LIBRARY_PATH"] = os.path.join(self.bin_root(True), "lib") + \
(os.pathsep + env["LIBRARY_PATH"]) \ (os.pathsep + env["LIBRARY_PATH"]) \
if "LIBRARY_PATH" in env else "" if "LIBRARY_PATH" in env else ""
# preserve existing RUSTFLAGS # preserve existing RUSTFLAGS
env.setdefault("RUSTFLAGS", "") env.setdefault("RUSTFLAGS", "")
env["RUSTFLAGS"] += " -Cdebuginfo=2"
build_section = "target.{}".format(self.build) build_section = "target.{}".format(self.build)
target_features = [] target_features = []
if self.get_toml("crt-static", build_section) == "true": if self.get_toml("crt-static", build_section) == "true":