| Issue |
79647
|
| Summary |
[libc++][std-modules] failed to compile libc++ std modules on Windows
|
| Labels |
libc++
|
| Assignees |
|
| Reporter |
Arthapz
|
Hi, when building libc++ std modules on Windows libc++ include dirs appear to be missing
(reproducer with clang-scan-deps, but compiling the module directly output the same error)
```
> clang-scan-deps --format=p1689 -- clang -x c++ -c F:\llvm\lib\..\share\libc++\v1\std.cppm -o build\.objs\stdmodules\windows\x64\release\c54d4aa169bc4eb69eed289957de829f\std.cppm.obj -Qunused-arguments -m64 -fvisibi
lity=hidden -fvisibility-inlines-hidden -O3 -std=c++23 -stdlib=libc++ -fno-delayed-template-parsing -DNDEBUG
F:\llvm\lib\..\share\libc++\v1\std.compat.cppm:16:10: fatal error: '__config' file not found
```
```
> clang --version
clang version 18.0.0git (https://github.com/llvm/llvm-project.git 0880742a60e9436e439eaee05bf0c8acf4c48a62)
Target: x86_64-pc-windows-msvc
Thread model: posix
InstalledDir: F:\llvm\bin
```
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