cmake builds in bazel 8+ can produce improper includes paths

[jared-rodgers-figure]

Not sure what changed in bazel 8+, but the repro below shows that this ruleset produces what looks like the full path of a dereferenced symlink in the includes dir. The issue does not appear in bazel 7.6.1

Create a workspace for the minimal repro

# MODULE.bazel
module(
    name = "proxsuite_repro",
    version = "0.1.0",
)

bazel_dep(name = "rules_foreign_cc", version = "0.15.0")

http_archive = use_repo_rule("@bazel_tools//tools/build_defs/repo:http.bzl", "http_archive")

http_archive(
    name = "proxsuite",
    build_file = "@//:third_party/proxsuite/build_file.bazel",
    integrity = "sha256-wukoqjXEL9xSl6gbncxqf5J8igsBoY0ZhHgNZ969qnY=",
    strip_prefix = "proxsuite-0.5.0",
    url = "https://github.com/Simple-Robotics/proxsuite/releases/download/v0.5.0/proxsuite-0.5.0.tar.gz",
)

# thirdparty/proxsuite/build_file.bazel
load("@rules_foreign_cc//foreign_cc:defs.bzl", "cmake")

filegroup(
    name = "all_srcs",
    srcs = glob(["**"]),
)

cmake(
    name = "proxsuite",
    generate_args = [
        "-GNinja",
    ],
    cache_entries = {
        "CMAKE_BUILD_TYPE": "RelWithDebInfo",
        "BUILD_TESTING": "OFF",
        "BUILD_PYTHON_INTERFACE": "OFF",
        "BUILD_WITH_VECTORIZATION_SUPPORT": "ON",
    },
    copts = ["-Wno-error"],
    lib_source = ":all_srcs",
    out_headers_only = True,
    visibility = ["//visibility:public"],
)

Launch base container (assuming you are in your working dir)

docker run -v .:/tmp/workspace -it ubuntu:22.04 bash

In container Install deps for build

apt update && apt install -y wget build-essential libeigen3-dev=3.4.0* libsimde-dev=0.7.2*

Install bazelisk to swap between versions easily later

wget --progress=dot:giga https://github.com/bazelbuild/bazelisk/releases/download/v1.22.1/bazelisk-amd64.deb && dpkg -i bazelisk-amd64.deb && rm -f bazelisk-amd64.deb

enter working dir

cd /tmp/workspace

build using latest bazel version as of writing

echo 8.3.1 > .bazelversion
bazel build @proxsuite
ls bazel-bin/external/+_repo_rules+proxsuite/proxsuite/include
# Note that there are 2 dirs in the includes directory one looks like symlinks were dereferenced and the full path was placed in the direcory. 

output

root@4e93b28779b9:/tmp/workspace# tree -a bazel-bin/external/+_repo_rules+proxsuite/proxsuite
bazel-bin/external/+_repo_rules+proxsuite/proxsuite
`-- include
    |-- proxsuite
    |   |-- config.hpp
    |   |-- deprecated.hpp
    |   `-- warning.hpp
    `-- root
        `-- .cache
            `-- bazel
                `-- _bazel_root
                    `-- 9cc7d801fb7b9b2f471013117c1d1061
                        `-- sandbox
                            `-- processwrapper-sandbox
                                `-- 3
                                    `-- execroot
                                        `-- _main
                                            `-- external
                                                `-- +_repo_rules+proxsuite
                                                    `-- proxsuite
                                                        |-- fwd.hpp -> /root/.cache/bazel/_bazel_root/9cc7d801fb7b9b2f471013117c1d1061/execroot/_main/external/+_repo_rules+proxsuite/include/proxsuite/fwd.hpp
                                                        |-- helpers
                                                        |   |-- common.hpp -> /root/.cache/bazel/_bazel_root/9cc7d801fb7b9b2f471013117c1d1061/execroot/_main/external/+_repo_rules+proxsuite/include/proxsuite/helpers/common.hpp

...

Revert to latest 7.x.y version (7.6.1 as of writing)

echo 7.6.1 > .bazelversion
bazel build @proxsuite
ls bazel-bin/external/_main~_repo_rules~proxsuite/proxsuite/include
# Note that there is only 1 dir with the includes placed properly.

output

root@4e93b28779b9:/tmp/workspace# tree -a bazel-bin/external/_main~_repo_rules~proxsuite/proxsuite
bazel-bin/external/_main~_repo_rules~proxsuite/proxsuite
`-- include
    `-- proxsuite
        |-- config.hpp
        |-- deprecated.hpp
        |-- fwd.hpp -> /root/.cache/bazel/_bazel_root/9cc7d801fb7b9b2f471013117c1d1061/execroot/_main/external/_main~_repo_rules~proxsuite/include/proxsuite/fwd.hpp
        |-- helpers
        |   |-- common.hpp -> /root/.cache/bazel/_bazel_root/9cc7d801fb7b9b2f471013117c1d1061/execroot/_main/external/_main~_repo_rules~proxsuite/include/proxsuite/helpers/common.hpp
        |   |-- instruction-set.hpp -> /root/.cache/bazel/_bazel_root/9cc7d801fb7b9b2f471013117c1d1061/execroot/_main/external/_main~_repo_rules~proxsuite/include/proxsuite/helpers/instruction-set.hpp
        |   |-- optional.hpp -> /root/.cache/bazel/_bazel_root/9cc7d801fb7b9b2f471013117c1d1061/execroot/_main/external/_main~_repo_rules~proxsuite/include/proxsuite/helpers/optional.hpp
        |   |-- tl-optional.hpp -> /root/.cache/bazel/_bazel_root/9cc7d801fb7b9b2f471013117c1d1061/execroot/_main/external/_main~_repo_rules~proxsuite/include/proxsuite/helpers/tl-optional.hpp
        |   `-- version.hpp -> /root/.cache/bazel/_bazel_root/9cc7d801fb7b9b2f471013117c1d1061/execroot/_main/external/_main~_repo_rules~proxsuite/include/proxsuite/helpers/version.hpp
        |-- linalg
        |   |-- dense
        |   |   |-- core.hpp -> /root/.cache/bazel/_bazel_root/9cc7d801fb7b9b2f471013117c1d1061/execroot/_main/external/_main~_repo_rules~proxsuite/include/proxsuite/linalg/dense/core.hpp
        |   |   |-- factorize.hpp -> /root/.cache/bazel/_bazel_root/9cc7d801fb7b9b2f471013117c1d1061/execroot/_main/external/_main~_repo_rules~proxsuite/include/proxsuite/linalg/dense/factorize.hpp
        |   |   |-- ldlt.hpp -> /root/.cache/bazel/_bazel_root/9cc7d801fb7b9b2f471013117c1d1061/execroot/_main/external/_main~_repo_rules~proxsuite/include/proxsuite/linalg/dense/ldlt.hpp
        |   |   |-- modify.hpp -> /root/.cache/bazel/_bazel_root/9cc7d801fb7b9b2f471013117c1d1061/execroot/_main/external/_main~_repo_rules~proxsuite/include/proxsuite/linalg/dense/modify.hpp
        |   |   |-- solve.hpp -> /root/.cache/bazel/_bazel_root/9cc7d801fb7b9b2f471013117c1d1061/execroot/_main/external/_main~_repo_rules~proxsuite/include/proxsuite/linalg/dense/solve.hpp
        |   |   `-- update.hpp -> /root/.cache/bazel/_bazel_root/9cc7d801fb7b9b2f471013117c1d1061/execroot/_main/external/_main~_repo_rules~proxsuite/include/proxsuite/linalg/dense/update.hpp
        |   |-- sparse
        |   |   |-- core.hpp -> /root/.cache/bazel/_bazel_root/9cc7d801fb7b9b2f471013117c1d1061/execroot/_main/external/_main~_repo_rules~proxsuite/include/proxsuite/linalg/sparse/core.hpp
        |   |   |-- factorize.hpp -> /root/.cache/bazel/_bazel_root/9cc7d801fb7b9b2f471013117c1d1061/execroot/_main/external/_main~_repo_rules~proxsuite/include/proxsuite/linalg/sparse/factorize.hpp
...