No such file or directory error with bazel 7

[derekperkins]

When upgrading to Bazel 7.0.2 from 6.5.0, with no other changes (bzlmod explicitly disabled), my llvm build fails in CI (Google Cloud Build) saying that a file can't be found. I'm not quite sure what would cause that change.

external/go_sdk/pkg/tool/linux_amd64/link: running external/llvm_toolchain/bin/cc_wrapper.sh failed: exit status 1
external/llvm_toolchain_llvm/bin/ld.lld: error while loading shared libraries: libxml2.so.2: cannot open shared object file: No such file or directory

Possibly related issue:

• https://github.com/aspect-build/gcc-toolchain/issues/161

Error logs

[56 / 59] GoCompilePkg external/bazel_gazelle/language/go/go.a [for tool]; 0s linux-sandbox
ERROR: /builder/home/.cache/bazel/_bazel_root/eab0d61a99b6696edb3d2aff87b585e8/external/bazel_gazelle/cmd/gazelle/BUILD.bazel:4:15: GoLink external/bazel_gazelle/cmd/gazelle/gazelle_/gazelle [for tool] failed: (Exit 1): builder failed: error executing GoLink command (from target @@bazel_gazelle//cmd/gazelle:gazelle) bazel-out/k8-opt-exec-ST-13d3ddad9198/bin/external/go_sdk/builder_reset/builder link -sdk external/go_sdk -installsuffix linux_amd64 -arc ... (remaining 67 arguments skipped)

Use --sandbox_debug to see verbose messages from the sandbox and retain the sandbox build root for debugging
external/go_sdk/pkg/tool/linux_amd64/link: running external/llvm_toolchain/bin/cc_wrapper.sh failed: exit status 1
external/llvm_toolchain_llvm/bin/ld.lld: error while loading shared libraries: libxml2.so.2: cannot open shared object file: No such file or directory
clang: error: unable to execute command: No such file or directory
clang: error: linker command failed due to signal (use -v to see invocation)

link: error running subcommand GOOS=linux \
GOPATH= \
GOROOT_FINAL=GOROOT \
GOROOT=bazel-out/k8-opt-exec-ST-13d3ddad9198/bin/external/io_bazel_rules_go/stdlib_ \
PATH=external/llvm_toolchain/bin:/bin:/usr/bin \
GOEXPERIMENT=nocoverageredesign \
GOTOOLCHAIN=local \
TMPDIR=/tmp \
GOARCH=amd64 \
ZERO_AR_DATE=1 \
CGO_ENABLED=1 \
external/go_sdk/pkg/tool/linux_amd64/link -importcfg /tmp/bazel-working-directory/__main__/bazel-out/k8-opt-exec-ST-13d3ddad9198/bin/external/bazel_gazelle/cmd/gazelle/gazelle_/importcfg111940917 -o /tmp/bazel-working-directory/__main__/bazel-out/k8-opt-exec-ST-13d3ddad9198/bin/external/bazel_gazelle/cmd/gazelle/gazelle_/gazelle -extld external/llvm_toolchain/bin/cc_wrapper.sh -buildid=redacted -s -w -extldflags "--target=x86_64-unknown-linux-gnu -lm -no-canonical-prefixes -fuse-ld=lld -Wl,--build-id=md5 -Wl,--hash-style=gnu -Wl,-z,relro,-z,now -l:libc++.a -l:libc++abi.a -l:libunwind.a -rtlib=compiler-rt -lpthread -ldl" /tmp/bazel-working-directory/__main__/bazel-out/k8-opt-exec-ST-13d3ddad9198/bin/external/bazel_gazelle/cmd/gazelle/gazelle.a: exit status 2
INFO: Found 1 target...
Target //:gazelle-update-repos failed to build

not full files, just seemingly relevant pieces

.bazelrc

common --noenable_bzlmod

build --incompatible_disallow_empty_glob=false

WORKSPACE

http_archive(
    name = "bazel_gazelle",
    sha256 = "32938bda16e6700063035479063d9d24c60eda8d79fd4739563f50d331cb3209",
    urls = [
        "https://mirror.bazel.build/github.com/bazelbuild/bazel-gazelle/releases/download/v0.35.0/bazel-gazelle-v0.35.0.tar.gz",
        "https://github.com/bazelbuild/bazel-gazelle/releases/download/v0.35.0/bazel-gazelle-v0.35.0.tar.gz",
    ],
)

http_archive(
    name = "io_bazel_rules_go",
    sha256 = "80a98277ad1311dacd837f9b16db62887702e9f1d1c4c9f796d0121a46c8e184",
    urls = [
        "https://mirror.bazel.build/github.com/bazelbuild/rules_go/releases/download/v0.46.0/rules_go-v0.46.0.zip",
        "https://github.com/bazelbuild/rules_go/releases/download/v0.46.0/rules_go-v0.46.0.zip",
    ],
)

load("@io_bazel_rules_go//go:deps.bzl", "go_register_toolchains", "go_rules_dependencies")

go_register_toolchains(version = "1.22.0")

load("//:deps.bzl", "go_dependencies")

go_dependencies()

go_rules_dependencies()

load("@bazel_gazelle//:deps.bzl", "gazelle_dependencies")

gazelle_dependencies()

http_archive(
    name = "toolchains_llvm",
    canonical_id = "0.10.3",
    sha256 = "b7cd301ef7b0ece28d20d3e778697a5e3b81828393150bed04838c0c52963a01",
    strip_prefix = "toolchains_llvm-0.10.3",
    url = "https://github.com/grailbio/bazel-toolchain/releases/download/0.10.3/toolchains_llvm-0.10.3.tar.gz",
)

load("@toolchains_llvm//toolchain:deps.bzl", "bazel_toolchain_dependencies")

bazel_toolchain_dependencies()

load("@toolchains_llvm//toolchain:rules.bzl", "llvm_toolchain")

llvm_toolchain(
    name = "llvm_toolchain",
    llvm_versions = {
        "": "16.0.4",
        "darwin-aarch64": "16.0.5",
    },
)

load("@llvm_toolchain//:toolchains.bzl", "llvm_register_toolchains")

llvm_register_toolchains()

Dockerfile

FROM debian:bookworm-slim

ENV DEBIAN_FRONTEND=noninteractive

RUN apt-get update && \
    apt-get install curl gnupg ca-certificates git -y --no-install-recommends && \
    curl -fsSL https://bazel.build/bazel-release.pub.gpg | gpg --dearmor > bazel.gpg && \
    mv bazel.gpg /etc/apt/trusted.gpg.d/ && \
    echo "deb [arch=amd64] https://storage.googleapis.com/bazel-apt stable jdk1.8" | tee /etc/apt/sources.list.d/bazel.list && \
    apt update && \
    apt-get install bazel-7.0.2 gnupg2 curl -y && \
    apt-get purge gnupg2 -y --no-install-recommends && \
    apt-get autoremove -y && \
    apt-get clean && \
    rm -rf /var/lib/apt/lists/*

RUN mv /usr/bin/bazel-7.0.2 /usr/bin/bazel

[derekperkins]

I tried with all combinations of these two flags as suggested in the linked issue, and it still didn't successfully build.

common --noincompatible_sandbox_hermetic_tmp
common --sandbox_add_mount_pair=/tmp

[siddharthab]

Sorry, the missing dep you are referencing is a system dependency from the released LLVM distribution. It is out of scope for this project.

You can reference what we install in a base Debian image to make the toolchain (and our tests) work -- https://github.com/bazel-contrib/toolchains_llvm/blob/67d4dcd7e48f32536e21439626a9a1bed8d58da8/tests/scripts/debian_test.sh#L33

For the slim Debian image, you might need a few more deps. You can use the script above to iterate locally and test.

Please reopen if it does not work for you.

[derekperkins]

That was it, thanks, sorry for the noise. I was under the assumption that this toolchain was completely self-contained.