Integration with LSP by generating compile_commands.json

[lungsin]

tcframe script directly invoke g++ and uses custom include paths -I "$TCFRAME_HOME/include". This causes a bunch of errors to the code editor that uses LSP with default config:

One solution is to generate compile_commands.json to tell the LSP how the compilation is done. For example, the following is a compile_commands.json that I handcraft for my own usage (with /absolute/bath/to/working/directory replaced).

[
  {
    "directory": "/absolute/path/to/working/directory",
    "command": "g++ -std=c++17 -D__TCFRAME_SPEC_FILE__=\"\\\"/absolute/path/to/working/directory/spec.cpp\\\"\" -I \"/home/klungs/tcframe/include\" -O2 -o \"runner\" \"/home/klungs/tcframe/src/tcframe/runner.cpp\"",
    "file": "/home/klungs/tcframe/src/tcframe/runner.cpp"
  }
]

My proposal is to have tcframe script to generate compile_commands.json, e.g. using command tcframe export_compile_commands.