<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/63890>63890</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            [Bazel][Clang Tidy] Unable to find standard library
        </td>
    </tr>

    <tr>
      <th>Labels</th>
      <td>
            new issue
      </td>
    </tr>

    <tr>
      <th>Assignees</th>
      <td>
      </td>
    </tr>

    <tr>
      <th>Reporter</th>
      <td>
          jathu
      </td>
    </tr>
</table>

<pre>
    ## System
OS: macOS 13.4.1
Arch: M2 Pro
LLVM version: 53e33807860f3b48b6f409b186a3c76de5cf1bf8
Bazel version: 6.2.1

## Problem

I'm currently building [clang-tidy using bazel](https://github.com/llvm/llvm-project/blob/2f38604c792a6cfc22eedbe76f8ade5a13304f8d/utils/bazel/llvm-project-overlay/clang-tools-extra/clang-tidy/BUILD.bazel#L370). Using the binary results in (standard) file not found diagnostic error.

```
$ bazel build @llvm-project//clang-tools-extra/clang-tidy:clang-tidy
$ bazel-bin/external/llvm-project/clang-tools-extra/clang-tidy/clang-tidy --config-file .clang-tidy example.cpp -- -std=c++17

Error while trying to load a compilation database:
Could not auto-detect compilation database for file "example.cpp"
No compilation database found in /Users/someone/project or any parent directory
fixed-compilation-database: Error while opening fixed database: No such file or directory
json-compilation-database: Error while opening JSON database: No such file or directory
Running without flags.
1 error generated.
Error while processing /Users/someone/project/example.cpp.
/Users/someone/project/example.cpp:1:10: error: 'iostream' file not found [clang-diagnostic-error]
    1 | #include <iostream>
      |          ^~~~~~~~~~
Found compiler error(s).
```

## Context 

`example.cpp` file:

```C++
#include <iostream>

auto main(int /*argc*/, char** /*argv[]*/) -> int {
  std::cout << "hello world" << std::endl;
  return 0;
}
```

`.clang-tidy` config file:
```
Checks: >
  -*,
  bugprone-*,
  google-*,
 misc-*,
  modernize-*,
  performance-*,
  portability-*,
 readability-*
```

`WORKSPACE` file:
``` starlark
new_git_repository(
    name = "llvm-raw",
 build_file_content = "# empty",
    commit = "53e33807860f3b48b6f409b186a3c76de5cf1bf8",
    remote = "https://github.com/llvm/llvm-project.git",
)

load("@llvm-raw//utils/bazel:configure.bzl", "llvm_configure")

llvm_configure(name = "llvm-project")
```

`.bazelrc` file:

```starlark
build --cxxopt=-std=c++17
build --host_cxxopt=-std=c++17
build --repo_env=CC=clang++
```

Xcode info:

```
$ xcode-select --print-path
/Library/Developer/CommandLineTools

$ xcrun --show-sdk-path
/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk
```

## Attempts

I tried explicitly including a sysroot, but that results in a different error:

```
$ bazel-bin/external/llvm-project/clang-tools-extra/clang-tidy/clang-tidy --config-file .clang-tidy example.cpp -- -std=c++17 -isysroot /Library/Developer/CommandLineTools/SDKs/MacOSX13.3.sdk

34253 warnings and 1 error generated.
Error while processing /Users/someone/project/example.cpp.
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/wchar.h:89:10: error: 'stdarg.h' file not found [clang-diagnostic-error]
   89 | #include <stdarg.h>
      |          ^~~~~~~~~~
Suppressed 34253 warnings (34253 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
Found compiler error(s).
```
</pre>
<img width="1px" height="1px" alt="" src="http://email.email.llvm.org/o/eJzMWE9z4joS_zTi0mWXkcCYAwcCQ9Xsy_yplze775aSrTZoRpZckhzCHPazb0kGYkhmJpnD1qMSg6Xulvqn_vOzuXNyqxEXZHpDpusR7_zO2MVX7nfdqDTisCCUEcrg7uA8NiRbk2z56Y6wJTS8-nQHY5ZO0nE_vrTVLsx8oPDZmn7s9vbfH-ABrZNGh7kpQ8aKbFbkWc3KSVHm9SSbl-Mi56ya5QKnVT0u66LXvuHfUQ3V85SeVjte--19tqZUp_311_eEzhqoOmtRe3WAspNKSL0FMr2pFNfbxEtxgM6FsTIsRKZrQoud960jbEnohtDNVvpdV6aVaQjdKPVw-kpaa75i5QndlMqUhG5ozYo8m1SzOeV5VVeUIooSZ3ldcIFTPmYsm9SFIHTTealc0IyrXhpMzANaxQ-Ebo67NEa5BB-95U9jUgSBmy_vb9fp0Qq7ZbOM0HkKX6JLfodQSs3tASy6TnkHUgOhhfNcC24FoXOopULQxkNtOi1ASL7VxnlZAVprbHoBdZ4d_47IT3rYemSBTLIrYH7tAlsObi6tJqXUhG7w0aPV_Bql16AzOOQkqYyu5TaJ_qaDGXzkTaswrdoWkgQS5wVh64rQG0JvxrOh_-8CIrDfBRPeHiLGBpThAjhUpmml4l4aDYJ7XnKHIYii5sp0SkSYeedNItBj5V9UgdrY_lAIpYO9EUp7Ux_Nj_TC-cUD3nxxaEN4OdOg0Ujo5ogaGAtcH6DlISdASIuVN_YIfS0fUSQD68nAERh6b1rUwf2oMXQXPhpwXbXrXTD2eomvzug3rfCvu08f37LAn52Oenvpd6bzUCu-dccoHvcxDVvUaLlHkT4_19aaCl3Mn58BGQPzfDinLHm1AmHLcfjPgkdxU-EHoTNpnLfIG0Jn16l5rlpPOZr0qtN1vz4AwBjIbAWEMqkr1QkEwlZno-zdkyBEwfOHTN_99_TphTZx1f6s0B53SQsXKszL9WBYj1dGe3z0cFU_hhjkWXTxnCRXRld9Cp6t_syh_hpyCxoeykYhtYdYgZbcbitC-2q-gmrHbbxbPk0_9L3vJDSHhLB3EC3Mbk6IxbqwDAUrhBVhK8ICznSHShnYG6sEofQ0cZZGLRRhZysWfWc1ZOchMlv_DMw8G9SqgFhfxq6Au1Rd7bD65mJAPR14Er1bnW7Lbttao_FqeGvMVl0NNtJVV2KNEWi1_H6t3qKtjW24rp7NGOt5KZX0h8sZi1wMJ36KxX8-_fnH3efl6t3z2DlpgPPcKm6_9eMa9_db6e8ttsbJWCZo8ZQEmjchoNbhIGN3sXwfKu15e7Gz3Yel7qsQ0SEmevEQ5Ni0_nAhDxAyppFnsVfTnSsrFhvjz3t7GyVJt9IP7RE6HwIZGlZAgdJTx45eb57xkhDrIdo6i2n5XfUmT1Ddn-fi-OUKV_PFM5zPVXGg-qMEiJux1a_qxeXB95QkSarHR9N6wtYvN_aT2M44f_9K2RBL96gfCFuvVkEsJOhFsXrJk78rIxCkrs2PHHjiP49BNnGoQstOktZK7ZOW-925z9zK0vIQzJs1PqAyLVpCNyvTNFyLW6nxr0CLLutysGs7DUnidmafOPHtt2zSzd36j_D1IfD_v1Mnvv26HSy9D8lysaP34K1EAfjYKlnJQNH7Gh-aLwd3cNYYH0Ku7Dz4HfdDHstByLrGyGNOHfQ1ZPWfQSshkUf_4LeRH7OUDdCPVzahUwZ7bgMJcsC1gP8D61m24QQjoQt6MdRTHkjrZtVXTXfl22fFfWgVgzhqj0NXks-DjW46F2aOhIDQzT509TQ8ehbzF2mV84Lbbbr7XVpVzF-gVWejb6JVd13bWnQOBVwdFqFFPyI1aKOTzqGFAOUT4_riEJIdcoE2hJxHS9g6DWTGGxDStYofescd1NY0wJWKtlx8eode1YUnRITj4NGe-5GJS1XgDvaoVPpmkjgSCybmbM5HuBjnxXwyYzTLR7vFDMs5Y1leFRNGy7wsJ0LQKSJFkdVsXo3kgmaUZbNxntEsn-TpNMciE0VZszEW-ZyRSYYNlyoNqZwaux1J5zpc5KyYZyPFS1QuvuCgVOMe4mRoPdP1yC5i-pfd1oVuKJ13T1a89Cq-Gbk5vR2Y3qxCsMBfoRRM1_BF8zI8DRqopRZwerIG1Wf0qLNq8eb3CXF_Iejj_v8XAAD__7r-ZgQ">