Neovim中clangd无法索引指定头文件的问题求助

问题详情 #

我有一个通过CMake构建的大型C项目，已生成compile_commands.json且所有包含路径都已配置，但在main.c中clangd无法找到libxml/parser.h。
compile_commands.json里，main.c的编译命令包含-I[path/to/project]/sdk/include参数，而libxml/parser.h正好位于该目录下。

使用环境：

• Neovim v0.7.2
• Ubuntu clangd version 12.0.0-3ubuntu1~20.04.5

此前用ccls时也遇到同样问题，推测是项目规模过大导致（包含1000条编译命令，每条长度达5700字符）。

Neovim中clangd相关配置 #

-- Use an on_attach function to only map the following keys
-- after the language server attaches to the current buffer
local on_attach = function(client, bufnr)
  -- Enable completion triggered by <c-x><c-o>
  vim.api.nvim_buf_set_option(bufnr, 'omnifunc', 'v:lua.vim.lsp.omnifunc')

  -- Mappings.
  -- See `:help vim.lsp.*` for documentation on any of the below functions
  local bufopts = { noremap=true, silent=true, buffer=bufnr }
  vim.keymap.set('n', 'gD', vim.lsp.buf.declaration, bufopts)
  vim.keymap.set('n', 'gd', vim.lsp.buf.definition, bufopts)
  vim.keymap.set('n', 'K', vim.lsp.buf.hover, bufopts)
  vim.keymap.set('n', 'gi', vim.lsp.buf.implementation, bufopts)
  vim.keymap.set('n', '<C-k>', vim.lsp.buf.signature_help, bufopts)
  vim.keymap.set('n', '<space>wa', vim.lsp.buf.add_workspace_folder, bufopts)
  vim.keymap.set('n', '<space>wr', vim.lsp.buf.remove_workspace_folder, bufopts)
  vim.keymap.set('n', '<space>wl', function()
    print(vim.inspect(vim.lsp.buf.list_workspace_folders()))
  end, bufopts)
  vim.keymap.set('n', '<space>D', vim.lsp.buf.type_definition, bufopts)
  vim.keymap.set('n', '<space>rn', vim.lsp.buf.rename, bufopts)
  vim.keymap.set('n', '<space>ca', vim.lsp.buf.code_action, bufopts)
  vim.keymap.set('n', 'gr', vim.lsp.buf.references, bufopts)
  vim.keymap.set('n', '<alt>L', vim.lsp.buf.formatting, bufopts)
end

local lsp_flags = {
  -- This is the default in Nvim 0.7+
  debounce_text_changes = 150,
}
require('lspconfig')['pyright'].setup{
    on_attach = on_attach,
    flags = lsp_flags,
}
require('lspconfig')['tsserver'].setup{
    on_attach = on_attach,
    flags = lsp_flags,
}
require('lspconfig')['rust_analyzer'].setup{
    on_attach = on_attach,
    flags = lsp_flags,
    -- Server-specific settings...
    settings = {
      ["rust-analyzer"] = {}
    }
}
require('lspconfig').clangd.setup{
    on_attach = on_attach,
    flags = lsp_flags,
    cmd = {"clangd-12"}
}

Clangd日志信息 #

非verbose模式日志 #

[START][2022-08-12 06:28:15] LSP logging initiated
[ERROR][2022-08-12 06:28:18] .../vim/lsp/rpc.lua:420    "rpc"   "clangd-12" "stderr"    "I[06:28:18.108] Ubuntu clangd version 12.0.0-3ubuntu1~20.04.5\nI[06:28:18.108] PID: 185\n"
[ERROR][2022-08-12 06:28:18] .../vim/lsp/rpc.lua:420    "rpc"   "clangd-12" "stderr"    "I[06:28:18.109] Working directory: /mnt/c/Users/gianl/Desktop/ite_sdk\nI[06:28:18.109] argv[0]: clangd-12\n"
[ERROR][2022-08-12 06:28:18] .../vim/lsp/rpc.lua:420    "rpc"   "clangd-12" "stderr"    "I[06:28:18.109] Starting LSP over stdin/stdout\n"
[ERROR][2022-08-12 06:28:18] .../vim/lsp/rpc.lua:420    "rpc"   "clangd-12" "stderr"    "I[06:28:18.109] <-- initialize(1)\n"
[ERROR][2022-08-12 06:28:18] .../vim/lsp/rpc.lua:420    "rpc"   "clangd-12" "stderr"    "I[06:28:18.134] --> reply:initialize(1) 24 ms\n"
[ERROR][2022-08-12 06:28:33] .../vim/lsp/rpc.lua:420    "rpc"   "clangd-12" "stderr"    "I[06:28:33.828] <-- initialized\n"
[ERROR][2022-08-12 06:28:33] .../vim/lsp/rpc.lua:420    "rpc"   "clangd-12" "stderr"    "I[06:28:33.828] <-- textDocument/didOpen\n"
[ERROR][2022-08-12 06:28:33] .../vim/lsp/rpc.lua:420    "rpc"   "clangd-12" "stderr"    "I[06:28:33.857] Loaded compilation database from /mnt/c/Users/gianl/Desktop/ite_sdk/compile_commands.json\n"
[ERROR][2022-08-12 06:28:33] .../vim/lsp/rpc.lua:420    "rpc"   "clangd-12" "stderr"    "I[06:28:33.857] ASTWorker building file /mnt/c/Users/gianl/Desktop/ite_sdk/project/standard_project/main.c version 0 with command clangd fallback\n[/mnt/c/Users/gianl/Desktop/ite_sdk/project/standard_project]\n/usr/bin/clang /mnt/c/Users/gianl/Desktop/ite_sdk/project/standard_project/main.c -fsyntax-only -resource-dir=/usr/lib/llvm-12/lib/clang/12.0.0\n"
[ERROR][2022-08-12 06:28:33] .../vim/lsp/rpc.lua:420    "rpc"   "clangd-12" "stderr"    "I[06:28:33.997] --> textDocument/publishDiagnostics\n"

旧日志中的错误条目 #

[ERROR][2022-08-12 06:25:57] .../vim/lsp/rpc.lua:420    "rpc"   "clangd-12" "stderr"    "V[06:25:57.138] Dex query tree: (LIMIT 10000 (& T=lex T=exi T=pio T=tpi T=itp T=xit T=oct T=ctl T=tle T=ioc S= ?=Restricted For Code Completion))\n"

内容的提问来源于stack exchange，提问作者Gian Laager