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Add the LLVM apt source only when the image lacks it #836

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Add the LLVM apt source only when the image lacks it #836

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8876fe8
Add the LLVM apt source only when the image lacks it
yinlin-google Sep 1, 2026
fe3ab54
Remove static copyright header from build_wheel.sh
yinlin-google Sep 1, 2026
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26 changes: 8 additions & 18 deletions ci/build_wheel.sh
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Original file line number Diff line number Diff line change
@@ -1,18 +1,4 @@
#!/bin/bash

# Copyright 2026 Google LLC.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
# Builds the tpu_raiden wheel hermetically inside the ml-build container
# (glibc 2.35, matching the TPU runtime), mirroring torch_tpu/ci/build_wheel.sh.
#
Expand Down Expand Up @@ -90,10 +76,14 @@ export DEBIAN_FRONTEND=noninteractive
apt-get update -qq
apt-get install -y -qq wget gnupg ca-certificates patchelf patch >/dev/null
# Add the LLVM jammy-18 apt repo manually (the container's add-apt-repository is
# broken: python apt_pkg is missing for python3.12).
wget -qO- https://apt.llvm.org/llvm-snapshot.gpg.key | gpg --dearmor -o /usr/share/keyrings/llvm.gpg
echo "deb [signed-by=/usr/share/keyrings/llvm.gpg] http://apt.llvm.org/jammy/ llvm-toolchain-jammy-18 main" \
> /etc/apt/sources.list.d/llvm18.list
# broken: python apt_pkg is missing for python3.12) unless the image already
# carries it: apt refuses to read its sources when the same suite is listed
# twice under different keyrings.
if ! grep -rqs 'apt.llvm.org/jammy/ llvm-toolchain-jammy-18' /etc/apt/sources.list /etc/apt/sources.list.d/; then
wget -qO- https://apt.llvm.org/llvm-snapshot.gpg.key | gpg --dearmor -o /usr/share/keyrings/llvm.gpg
echo "deb [signed-by=/usr/share/keyrings/llvm.gpg] http://apt.llvm.org/jammy/ llvm-toolchain-jammy-18 main" \
> /etc/apt/sources.list.d/llvm18.list
fi
apt-get update -qq
# clang ships no standard library of its own: it compiles against the newest
# GCC installation present. The container carries only libstdc++ 11, which
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