c++ projects are not available

[Mybelieve]

I used the yaml_cpp project in c++, which produced compile_commands.json, but the application couldn't parse its symbol by definition

[isaacphi]

I'm sorry, could you provide more details such as which client you're using, error logs from mcp-language-server with LOG_LEVEL set to DEBUG, and more details about the steps you followed that lead to the problem?

[Mybelieve]

I'm sorry, could you provide more details such as which client you're using, error logs from mcp-language-server with LOG_LEVEL set to DEBUG, and more details about the steps you followed that lead to the problem?

1. client : cline from the vscode plugin
2. OS: ubuntu 20.04
3. clangd: https://github.com/clangd/clangd/releases/download/snapshot_20250518/clangd-linux-snapshot_20250518.zip
4. yaml-cpp: https://github.com/jbeder/yaml-cpp.git
5. A compile_commands.json file has been generated in the yaml-cpp/build directory
6. Mcpserver successfully connected, but could not parse the symbols in the yaml-cpp project.
7. And I don't know how to view the log output of mcp-language-server or clangd in vscode

{
"mcpServers": {
"language-server": {
"command": "mcp-language-server",
"args": [
"--workspace",
"/home/ubuntu/yaml-cpp/",
"--lsp",
"/usr/local/clangd/bin/clangd",
"--",
"--compile-commands-dir=/home/ubuntu/yaml-cpp/build",
"--log=verbose"
],
"env": {
"LOG_LEVEL": "DEBUG"
}
}
}
}

[isaacphi]

@Mybelieve I see you closed the issue, did you get it working? If so, it might be helpful to share in case someone searches the issue.

Unfortunately I won't be able to help too much because I'm not a C++ dev. Someone else added clangd support here: #29

[Mybelieve]

@Mybelieve I see you closed the issue, did you get it working? If so, it might be helpful to share in case someone searches the issue.

Unfortunately I won't be able to help too much because I'm not a C++ dev. Someone else added clangd support here: #29

clangd does not index c++ source code by default after running mcp-language-server. In this case, you need to open a source file at any time, edit it, and then save and exit. clangd will create an index when it detects changes in the file. Then it's ready to use

[Mybelieve]

@Mybelieve I see you closed the issue, did you get it working? If so, it might be helpful to share in case someone searches the issue.
Unfortunately I won't be able to help too much because I'm not a C++ dev. Someone else added clangd support here: #29

clangd does not index c++ source code by default after running mcp-language-server. In this case, you need to open a source file at any time, edit it, and then save and exit. clangd will create an index when it detects changes in the file. Then it's ready to use

Can you modify the source code so that it automatically creates the index when it starts? If you fix this problem, please let me know and I will update mcp-language-server. Thank you

[isaacphi]

@Mybelieve I see. This appears to be the case with some other language servers as well. I'll take a look, but no guarantee it'll be soon