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Add RUSTFLAGS_BOOTSTRAP to RUSTFLAGS for bootstrap compilation #116532

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Oct 9, 2023
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Add RUSTFLAGS_BOOTSTRAP to RUSTFLAGS for bootstrap compilation #116532

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7 changes: 7 additions & 0 deletions src/bootstrap/bootstrap.py
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Original file line number Diff line number Diff line change
Expand Up @@ -954,6 +954,13 @@ def build_bootstrap_cmd(self, env):
if deny_warnings:
env["RUSTFLAGS"] += " -Dwarnings"

# Add RUSTFLAGS_BOOTSTRAP to RUSTFLAGS for bootstrap compilation.
# Note that RUSTFLAGS_BOOTSTRAP should always be added to the end of
# RUSTFLAGS to be actually effective (e.g., if we have `-Dwarnings` in
# RUSTFLAGS, passing `-Awarnings` from RUSTFLAGS_BOOTSTRAP should override it).
if "RUSTFLAGS_BOOTSTRAP" in env:
env["RUSTFLAGS"] += " " + env["RUSTFLAGS_BOOTSTRAP"]
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env["PATH"] = os.path.join(self.bin_root(), "bin") + \
os.pathsep + env["PATH"]
if not os.path.isfile(self.cargo()):
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