Using TDM-GCC with clangd on windows

[hsju2021]

I am using clangd on windows and I want it to use tdm-gcc instead of msvc. The official homepage says I should pass this argument: --query-driver=/path/to/mygcc,/path/to/myg++ but it does not work. I also modified config.yaml but it still does not work.
Here is part of the log with --log=verbose arg

I[13:42:53.161] clangd version 17.0.3 (https://github.com/llvm/llvm-project 888437e1b60011b8a375dd30928ec925b448da57)
I[13:42:53.162] Features: windows+grpc
I[13:42:53.162] PID: 12172
I[13:42:53.162] Working directory: c:\Users\HS\Desktop\C
I[13:42:53.162] argv[0]: c:\Users\HS\AppData\Roaming\Code\User\globalStorage\llvm-vs-code-extensions.vscode-clangd\install\17.0.3\clangd_17.0.3\bin\clangd.exe
I[13:42:53.162] argv[1]: --log=verbose
I[13:42:53.162] argv[2]: --query-driver=C:\\TDM-GCC-64\\bin\\gcc.exe,C:\\TDM-GCC-64\\bin\\g++.exe
V[13:42:53.166] User config file is C:\Users\HS\AppData\Local\clangd\config.yaml
I[13:42:53.166] Starting LSP over stdin/stdout
V[13:42:53.167] <<< {"id":0,"jsonrpc":"2.0","method":"initialize","params":{"capabilities":{"general":{"markdown":{"parser":"marked","version":"1.1.0"},"positionEncodings":["utf-16"],"regularExpressions":{"engine":"ECMAScript","version":"ES2020"},"staleRequestSupport":{"cancel":true,"retryOnContentModified":["textDocument/semanticTokens/full","textDocument/semanticTokens/range","textDocument/semanticTokens/full/delta"]}},"notebookDocument":{"synchronization":{"dynamicRegistration":true,"executionSummarySupport":true}},"textDocument":{"callHierarchy":{"dynamicRegistration":true},"codeAction":{"codeActionLiteralSupport":{"codeActionKind":{"valueSet":["","quickfix","refactor","refactor.extract","refactor.inline","refactor.rewrite","source","source.organizeImports"]}},"dataSupport":true,"disabledSupport":true,"dynamicRegistration":true,"honorsChangeAnnotations":false,"isPreferredSupport":true,"resolveSupport":{"properties":["edit"]}},"codeLens":{"dynamicRegistration":true},"colorProvider":{"dynamicRegistration":true},"completion":{"completionItem":{"commitCharactersSupport":true,"deprecatedSupport":true,"documentationFormat":["markdown","plaintext"],"insertReplaceSupport":true,"insertTextModeSupport":{"valueSet":[1,2]},"labelDetailsSupport":true,"preselectSupport":true,"resolveSupport":{"properties":["documentation","detail","additionalTextEdits"]},"snippetSupport":true,"tagSupport":{"valueSet":[1]}},"completionItemKind":{"valueSet":[1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25]},"completionList":{"itemDefaults":["commitCharacters","editRange","insertTextFormat","insertTextMode"]},"contextSupport":true,"dynamicRegistration":true,"editsNearCursor":true,"insertTextMode":2},"declaration":{"dynamicRegistration":true,"linkSupport":true},"definition":{"dynamicRegistration":true,"linkSupport":true},"diagnostic":{"dynamicRegistration":true,"relatedDocumentSupport":false},"documentHighlight":{"dynamicRegistration":true},"documentLink":{"dynamicRegistration":true,"tooltipSupport":true},"documentSymbol":{"dynamicRegistration":true,"hierarchicalDocumentSymbolSupport":true,"labelSupport":true,"symbolKind":{"valueSet":[1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26]},"tagSupport":{"valueSet":[1]}},"foldingRange":{"dynamicRegistration":true,"foldingRange":{"collapsedText":false},"foldingRangeKind":{"valueSet":["comment","imports","region"]},"lineFoldingOnly":true,"rangeLimit":5000},"formatting":{"dynamicRegistration":true},"hover":{"contentFormat":["markdown","plaintext"],"dynamicRegistration":true},"implementation":{"dynamicRegistration":true,"linkSupport":true},"inactiveRegionsCapabilities":{"inactiveRegions":true},"inlayHint":{"dynamicRegistration":true,"resolveSupport":{"properties":["tooltip","textEdits","label.tooltip","label.location","label.command"]}},"inlineValue":{"dynamicRegistration":true},"linkedEditingRange":{"dynamicRegistration":true},"onTypeFormatting":{"dynamicRegistration":true},"publishDiagnostics":{"codeDescriptionSupport":true,"dataSupport":true,"relatedInformation":true,"tagSupport":{"valueSet":[1,2]},"versionSupport":false},"rangeFormatting":{"dynamicRegistration":true},"references":{"dynamicRegistration":true},"rename":{"dynamicRegistration":true,"honorsChangeAnnotations":true,"prepareSupport":true,"prepareSupportDefaultBehavior":1},"selectionRange":{"dynamicRegistration":true},"semanticTokens":{"augmentsSyntaxTokens":true,"dynamicRegistration":true,"formats":["relative"],"multilineTokenSupport":false,"overlappingTokenSupport":false,"requests":{"full":{"delta":true},"range":true},"serverCancelSupport":true,"tokenModifiers":["declaration","definition","readonly","static","deprecated","abstract","async","modification","documentation","defaultLibrary"],"tokenTypes":["namespace","type","class","enum","interface","struct","typeParameter","parameter","variable","property","enumMember","event","function","method","macro","keyword","modifier","comment","string","number","regexp","operator","decorator"]},"signatureHelp":{"contextSupport":true,"dynamicRegistration":true,"signatureInformation":{"activeParameterSupport":true,"documentationFormat":["markdown","plaintext"],"parameterInformation":{"labelOffsetSupport":true}}},"synchronization":{"didSave":true,"dynamicRegistration":true,"willSave":true,"willSaveWaitUntil":true},"typeDefinition":{"dynamicRegistration":true,"linkSupport":true},"typeHierarchy":{"dynamicRegistration":true}},"window":{"showDocument":{"support":true},"showMessage":{"messageActionItem":{"additionalPropertiesSupport":true}},"workDoneProgress":true},"workspace":{"applyEdit":true,"codeLens":{"refreshSupport":true},"configuration":true,"diagnostics":{"refreshSupport":true},"didChangeConfiguration":{"dynamicRegistration":true},"didChangeWatchedFiles":{"dynamicRegistration":true,"relativePatternSupport":true},"executeCommand":{"dynamicRegistration":true},"fileOperations":{"didCreate":true,"didDelete":true,"didRename":true,"dynamicRegistration":true,"willCreate":true,"willDelete":true,"willRename":true},"inlayHint":{"refreshSupport":true},"inlineValue":{"refreshSupport":true},"semanticTokens":{"refreshSupport":true},"symbol":{"dynamicRegistration":true,"resolveSupport":{"properties":["location.range"]},"symbolKind":{"valueSet":[1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26]},"tagSupport":{"valueSet":[1]}},"workspaceEdit":{"changeAnnotationSupport":{"groupsOnLabel":true},"documentChanges":true,"failureHandling":"textOnlyTransactional","normalizesLineEndings":true,"resourceOperations":["create","rename","delete"]},"workspaceFolders":true}},"clientInfo":{"name":"Visual Studio Code","version":"1.87.2"},"initializationOptions":{"clangdFileStatus":true,"fallbackFlags":[]},"locale":"en","processId":12724,"rootPath":"c:\\Users\\HS\\Desktop\\C","rootUri":"file:///c%3A/Users/HS/Desktop/C","trace":"off","workspaceFolders":[{"name":"C","uri":"file:///c%3A/Users/HS/Desktop/C"}]}}

I[13:42:53.167] <-- initialize(0)
I[13:42:53.171] --> reply:initialize(0) 4 ms
V[13:42:53.172] >>> {"id":0,"jsonrpc":"2.0","result":{"capabilities":{"astProvider":true,"callHierarchyProvider":true,"clangdInlayHintsProvider":true,"codeActionProvider":{"codeActionKinds":["quickfix","refactor","info"]},"compilationDatabase":{"automaticReload":true},"completionProvider":{"resolveProvider":false,"triggerCharacters":[".","<",">",":","\"","/","*"]},"declarationProvider":true,"definitionProvider":true,"documentFormattingProvider":true,"documentHighlightProvider":true,"documentLinkProvider":{"resolveProvider":false},"documentOnTypeFormattingProvider":{"firstTriggerCharacter":"\n","moreTriggerCharacter":[]},"documentRangeFormattingProvider":true,"documentSymbolProvider":true,"executeCommandProvider":{"commands":["clangd.applyFix","clangd.applyTweak"]},"foldingRangeProvider":true,"hoverProvider":true,"implementationProvider":true,"inactiveRegionsProvider":true,"inlayHintProvider":true,"memoryUsageProvider":true,"referencesProvider":true,"renameProvider":{"prepareProvider":true},"selectionRangeProvider":true,"semanticTokensProvider":{"full":{"delta":true},"legend":{"tokenModifiers":["declaration","definition","deprecated","deduced","readonly","static","abstract","virtual","dependentName","defaultLibrary","usedAsMutableReference","usedAsMutablePointer","constructorOrDestructor","userDefined","functionScope","classScope","fileScope","globalScope"],"tokenTypes":["variable","variable","parameter","function","method","function","property","variable","class","interface","enum","enumMember","type","type","unknown","namespace","typeParameter","concept","type","macro","modifier","operator","bracket","label","comment"]},"range":false},"signatureHelpProvider":{"triggerCharacters":["(",")","{","}","<",">",","]},"standardTypeHierarchyProvider":true,"textDocumentSync":{"change":2,"openClose":true,"save":true},"typeDefinitionProvider":true,"typeHierarchyProvider":true,"workspaceSymbolProvider":true},"serverInfo":{"name":"clangd","version":"clangd version 17.0.3 (https://github.com/llvm/llvm-project 888437e1b60011b8a375dd30928ec925b448da57) windows+grpc x86_64-pc-windows-msvc"}}}

V[13:42:53.173] <<< {"jsonrpc":"2.0","method":"initialized","params":{}}

I[13:42:53.173] <-- initialized
V[13:42:53.180] <<< {"jsonrpc":"2.0","method":"textDocument/didOpen","params":{"textDocument":{"languageId":"cpp","text":"#include <stdio.h>\r\n\r\nint main() {\r\n    char a, b, c, d;\r\n    printf(\"Characters: \");\r\n    scanf(\" %c %c %c %c\", &a, &b, &c, &d);\r\n    unsigned int n=0;\r\n    // 0~7 bits: a\r\n    // 8~15 bits: b\r\n    // 16~23 bits: c\r\n    // 24~31 bits: d\r\n    n = (d << 24) | (c << 16) | (b << 8) | a;\r\n    printf(\"Number: %x\\n\", n);\r\n    \r\n    return 0;\r\n}","uri":"file:///c%3A/Users/HS/Desktop/C/endian.cpp","version":1}}}

I[13:42:53.181] <-- textDocument/didOpen
E[13:42:53.185] System include extraction: driver clang not found in PATH
V[13:42:53.186] config note at C:\Users\HS\AppData\Local\clangd\config.yaml:1:0: Parsing config fragment
V[13:42:53.186] config note at C:\Users\HS\AppData\Local\clangd\config.yaml:1:0: Parsed 1 fragments from file
V[13:42:53.186] Config fragment: compiling C:\Users\HS\AppData\Local\clangd\config.yaml:1 -> 0x000001B212C47F60 (trusted=true)
I[13:42:53.186] --> textDocument/publishDiagnostics
V[13:42:53.186] >>> {"jsonrpc":"2.0","method":"textDocument/publishDiagnostics","params":{"diagnostics":[],"uri":"file:///C:/Users/HS/AppData/Local/clangd/config.yaml"}}

I[13:42:53.188] Failed to find compilation database for c:\Users\HS\Desktop\C\endian.cpp
V[13:42:53.189] System include extraction: driver g++ expanded to C:\TDM-GCC-64\bin\g++.exe
V[13:42:53.189] System include extraction: not allowed driver C:\TDM-GCC-64\bin\g++.exe
I[13:42:53.189] ASTWorker building file c:\Users\HS\Desktop\C\endian.cpp version 1 with command clangd fallback
[c:\Users\HS\Desktop\C]
"C:\\TDM-GCC-64\\bin\\g++" --driver-mode=g++ -Wall "-resource-dir=c:\\Users\\HS\\AppData\\Roaming\\Code\\User\\globalStorage\\llvm-vs-code-extensions.vscode-clangd\\install\\17.0.3\\clangd_17.0.3\\lib\\clang\\17" -- "c:\\Users\\HS\\Desktop\\C\\endian.cpp"
V[13:42:53.196] Driver produced command: cc1 -cc1 -triple x86_64-pc-windows-msvc19.39.33523 -fsyntax-only -disable-free -clear-ast-before-backend -disable-llvm-verifier -discard-value-names -main-file-name endian.cpp -mrelocation-model pic -pic-level 2 -mframe-pointer=none -fmath-errno -ffp-contract=on -fno-rounding-math -mconstructor-aliases -funwind-tables=2 -target-cpu x86-64 -tune-cpu generic "-fcoverage-compilation-dir=c:\\Users\\HS\\Desktop\\C" -resource-dir "c:\\Users\\HS\\AppData\\Roaming\\Code\\User\\globalStorage\\llvm-vs-code-extensions.vscode-clangd\\install\\17.0.3\\clangd_17.0.3\\lib\\clang\\17" -internal-isystem "c:\\Users\\HS\\AppData\\Roaming\\Code\\User\\globalStorage\\llvm-vs-code-extensions.vscode-clangd\\install\\17.0.3\\clangd_17.0.3\\lib\\clang\\17\\include" -internal-isystem "C:\\Program Files\\Microsoft Visual Studio\\2022\\Community\\VC\\Tools\\MSVC\\14.39.33519\\include" -internal-isystem "C:\\Program Files\\Microsoft Visual Studio\\2022\\Community\\VC\\Tools\\MSVC\\14.39.33519\\atlmfc\\include" -internal-isystem "C:\\Program Files (x86)\\Windows Kits\\10\\Include\\10.0.22621.0\\ucrt" -internal-isystem "C:\\Program Files (x86)\\Windows Kits\\10\\Include\\10.0.22621.0\\shared" -internal-isystem "C:\\Program Files (x86)\\Windows Kits\\10\\Include\\10.0.22621.0\\um" -internal-isystem "C:\\Program Files (x86)\\Windows Kits\\10\\Include\\10.0.22621.0\\winrt" -internal-isystem "C:\\Program Files (x86)\\Windows Kits\\10\\Include\\10.0.22621.0\\cppwinrt" -Wall -fdeprecated-macro "-fdebug-compilation-dir=c:\\Users\\HS\\Desktop\\C" -ferror-limit 19 -fno-use-cxa-atexit -fms-extensions -fms-compatibility -fms-compatibility-version=19.39.33523 -std=c++14 -fdelayed-template-parsing -fcxx-exceptions -fexceptions -no-round-trip-args -faddrsig -x c++ "c:\\Users\\HS\\Desktop\\C\\endian.cpp"
I[13:42:53.196] --> textDocument/clangd.fileStatus
V[13:42:53.196] >>> {"jsonrpc":"2.0","method":"textDocument/clangd.fileStatus","params":{"state":"parsing includes, running Update","uri":"file:///c:/Users/HS/Desktop/C/endian.cpp"}}

[HighCommander4]

Does using single slashes in the --query-driver argument rather than double slashes help?

[hsju2021]

I can't believe I didn't try this. Thank you!

[HighCommander4]

FWIW clangd 18 will handle things like this by normalizing the path before comparison (llvm/llvm-project#66757)