justincady wrote:
> I tried with CMake project and this doesn't work for me. I tried in the
> following way: [...]
> And I see two .idx files for each source file in .cache/clangd/index/
> directory (newly created and one which I copied from foobar
Hm. I tested again by downloading a fresh zlib and:
- Copy and extract the archive into two separate directories
- In each:
- `$ cmake -S . -B build -DCMAKE_BUILD_TYPE=Release
-DCMAKE_EXPORT_COMPILE_COMMANDS=ON`
- `$ cmake --build build/`
- `$ mv build/compile_commands.json .`
- Open Client A in VSCode with this clangd config:
- `--log=verbose`
- `--background-index=true`
- `--background-index-path-mappings=${workspaceFolder}=/BUILDTOKEN`
- Observe `.cache` is created and populated in Client A
- `Enqueueing 17 commands for indexing`
- Copy `.cache` into Client B
- `$ cp -R /path/to/zlib-one/zlib-1.3.1/.cache .`
- Open Client B in VSCode with the same clangd config
- Observe index is loaded and duplicate files are not created (both cache
directories contain 29 files):
```
$ diff -bur .cache/ /path/to/zlib-one/zlib-1.3.1/.cache/`
$
```
- Now modify one file (adding an empty static function):
```
$ diff -bur .cache/ /path/to/zlib-one/zlib-1.3.1/.cache/
Binary files .cache/clangd/index/crc32.c.559185D1FE8F0292.idx and
/path/to/zlib-one/zlib-1.3.1/.cache/clangd/index/crc32.c.559185D1FE8F0292.idx
differ
$
```
There certainly could be a case I'm missing that's causing your error, but as
far as I can tell this is working for me.
If we determine this is a viable path forward of course I will work to
understand and resolve your issue. But if this direction is a dead end, we can
focus on the preferred implementation.
https://github.com/llvm/llvm-project/pull/180285
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