All versions fail with "Invalid schema" error on Windows

[mariusB2003]

Hello,

I am unable to get any version of clang-uml to work on my Windows 11 system. Every attempt fails with a persistent Invalid schema error, which suggests the built-in YAML parser is not working correctly on my machine.

The problem occurs with both the latest version and older, stable versions, each failing to recognize its own valid top-level configuration keys.

---

1. Latest Version Test

• Command: clang-uml --version
• Output: Built against LLVM/Clang libraries version: 20.1.7
• Config (.clang-uml):

  diagrams:
    my_class_diagram:
      type: class
      glob:
        - "main.cpp"
  compilation_database:
    generate: true
    add_compile_flags:
      - "-std=c++17"
  output_directory: "output"

• Error:

  ERROR: Invalid schema: - /compilation_database: undefined node
  

---

2. Older Stable Version Test (0.6.0)

• Command: clang-uml --version
• Output: clang-uml 0.6.0, Built against LLVM/Clang libraries version: 19.1.3
• Config (.clang-uml):

  diagrams:
    my_class_diagram:
      type: class
      glob:
        - "main.cpp"
  compile_flags:
    - "-std=c++17"
  output_directory: "output"

• Error:

  ERROR: Invalid schema: - /compile_flags: undefined node
  

---

3. Additional Troubleshooting Steps Performed

• I have confirmed the .clang-uml file is in the same directory as the source files and the command is run from there.
• I have meticulously recreated the .clang-uml file from scratch, ensuring it is saved with UTF-8 encoding without BOM.
• I have tried running the entire test case from a simple path (C:\test) to rule out issues with long paths or special characters.
• The verbose output (-v) did not provide additional useful information beyond confirming the config file path before failing with the same schema error.

It seems like there is a deep incompatibility on my system that prevents the YAML parser in clang-uml from recognizing any valid top-level keys, regardless of the program version.

Thank you for your help.

[bkryza]

@marius200390 Neither of the above configs is correct. If you're trying to use an LLM to generate the config, unfortunately clang-uml is not mainstream enough for LLMs to have enough examples to generate correct configuration files.

Try the following (replace "build_dir" with relative path to the directory containing compile_commands.json):

compilation_database_dir: "build_dir"
add_compile_flags:
  - "-std=c++17"
output_directory: "output"
diagrams:
  my_class_diagram:
    type: class
    glob:
      - "main.cpp"
    include:
      paths:
        - .

Configuration file reference is described here, and common options are discussed in detail here.