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Can not find c++ include header in cross compiling situation. #157

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sheeaza opened this issue Sep 19, 2019 · 12 comments
Closed

Can not find c++ include header in cross compiling situation. #157

sheeaza opened this issue Sep 19, 2019 · 12 comments

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@sheeaza
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sheeaza commented Sep 19, 2019

clangd will use the compiler in the compile_commands.json to find the include path,
On my platform, the compiler is exported as:

$ export CXX=/path/to/4.14.98-wayland/sysroots/x86_64-pokysdk-linux/usr/bin/aarch64-poky-linux/aarch64-poky-linux-g++

$CXX -E -x c++ - -v < /dev/null 2>&1 | \
      awk '/End of search list./ { show=0 } \
      { if (show) printf "-I%s\n",$1 }; \
      /#include <...> search starts here:/ { show=1; }'

-I/path/to/yocto/4.14.98-wayland/sysroots/x86_64-pokysdk-linux/usr/lib/aarch64-poky-linux/gcc/aarch64-poky-linux/7.3.0/include
-I/path/to/yocto/4.14.98-wayland/sysroots/x86_64-pokysdk-linux/usr/lib/aarch64-poky-linux/gcc/aarch64-poky-linux/7.3.0/include-fixed

This miss the c++ headers, and to locate the c++ headers, the compiler need the sysroot args.

export CXX=/path/toyocto/4.14.98-wayland/sysroots/x86_64-pokysdk-linux/usr/bin/aarch64-poky-linux/aarch64-poky-linux-g++\ --sysroot\=/path/to/yocto/4.14.98-wayland/sysroots/aarch64-poky-linux

$CXX -E -x c++ - -v < /dev/null 2>&1 | \
      awk '/End of search list./ { show=0 } \
      { if (show) printf "-I%s\n",$1 }; \
      /#include <...> search starts here:/ { show=1; }'

/path/to/yocto/4.14.98-wayland/sysroots/aarch64-poky-linux/usr/include/c++/7.3.0/aarch64-poky-linux
-I/path/to/yocto/4.14.98-wayland/sysroots/aarch64-poky-linux/usr/include/c++/7.3.0/backward
-I/path/to/yocto/4.14.98-wayland/sysroots/x86_64-pokysdk-linux/usr/lib/aarch64-poky-linux/gcc/aarch64-poky-linux/7.3.0/include
-I/path/to/yocto/4.14.98-wayland/sysroots/aarch64-poky-linux/usr/lib/gcc/aarch64-poky-linux/7.3.0/include
-I/path/to/yocto/4.14.98-wayland/sysroots/aarch64-poky-linux/usr/local/include
-I/path/to/yocto/4.14.98-wayland/sysroots/x86_64-pokysdk-linux/usr/lib/aarch64-poky-linux/gcc/aarch64-poky-linux/7.3.0/include-fixed
-I/path/to/yocto/4.14.98-wayland/sysroots/aarch64-poky-linux/usr/include/

There are already sysroots in the compile_commands.json files, but the clangd dont seem to use it to locate include paths.
So is it possible add the sysroot args to clangd to find all the c++ headers?
@kadircet
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Could you also send clangd logs so that we can check what are the exact arguments clangd is using to invoke the compiler?

Also please take a look at query-driver command line argument: https://clang.llvm.org/extra/clangd/Configuration.html#query-driver

@sheeaza
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sheeaza commented Sep 19, 2019 


## versions

vim version: NVIM v0.4.2
node version: v11.10.1
coc.nvim version: 0.0.74-e8e583c8e0
term: tmux-256color
platform: linux

## Messages

## Output channel: highlight
[Info  - 5:04:17 PM] Highlight server running in node v11.10.1


## Output channel: languageserver.clangd
I[17:04:18.621] clangd version 10.0.0-svn371642-1~exp1+0~20190911181237.2478~1.gbp13c8b7 (trunk)
I[17:04:18.621] Working directory: /opt/samba/nxf47746/project/learn-test/cv-fisheye
I[17:04:18.621] argv[0]: clangd-10
I[17:04:18.622] argv[1]: --log=verbose
I[17:04:18.622] Starting LSP over stdin/stdout
V[17:04:18.622] <<< {"id":0,"jsonrpc":"2.0","method":"initialize","params":{"capabilities":{"textDocument":{"codeAction":{"codeActionLiteralSupport":{"codeActionKind":{"valueSet":["","quickfix","refactor","refactor.extract","refactor.inline","refactor.rewrite","source","source.organizeImports"]}},"dynamicRegistration":true},"codeLens":{"dynamicRegistration":true},"colorProvider":{"dynamicRegistration":true},"completion":{"completionItem":{"commitCharactersSupport":true,"deprecatedSupport":true,"documentationFormat":["markdown","plaintext"],"preselectSupport":true,"snippetSupport":true},"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]},"contextSupport":true,"dynamicRegistration":true},"declaration":{"dynamicRegistration":true},"definition":{"dynamicRegistration":true},"documentHighlight":{"dynamicRegistration":true},"documentLink":{"dynamicRegistration":true},"documentSymbol":{"dynamicRegistration":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]}},"foldingRange":{"dynamicRegistration":true,"lineFoldingOnly":true,"rangeLimit":5000},"formatting":{"dynamicRegistration":true},"hover":{"contentFormat":["markdown","plaintext"],"dynamicRegistration":true},"implementation":{"dynamicRegistration":true},"onTypeFormatting":{"dynamicRegistration":true},"publishDiagnostics":{"relatedInformation":true},"rangeFormatting":{"dynamicRegistration":true},"references":{"dynamicRegistration":true},"rename":{"dynamicRegistration":true,"prepareSupport":true},"signatureHelp":{"dynamicRegistration":true,"signatureInformation":{"documentationFormat":["markdown","plaintext"],"parameterInformation":{"labelOffsetSupport":true}}},"synchronization":{"didSave":true,"dynamicRegistration":true,"willSave":true,"willSaveWaitUntil":true},"typeDefinition":{"dynamicRegistration":true}},"workspace":{"applyEdit":true,"configuration":true,"didChangeConfiguration":{"dynamicRegistration":true},"didChangeWatchedFiles":{"dynamicRegistration":true},"executeCommand":{"dynamicRegistration":true},"symbol":{"dynamicRegistration":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]}},"workspaceEdit":{"documentChanges":true,"failureHandling":"textOnlyTransactional","resourceOperations":["create","rename","delete"]},"workspaceFolders":true}},"initializationOptions":{},"processId":20232,"rootPath":"/opt/samba/nxf47746/project/learn-test/cv-fisheye","rootUri":"file:///opt/samba/nxf47746/project/learn-test/cv-fisheye","trace":"off","workspaceFolders":[{"name":"cv-fisheye","uri":"file:///opt/samba/nxf47746/project/learn-test/cv-fisheye"}]}}

I[17:04:18.622] <-- initialize(0)
I[17:04:18.623] --> reply:initialize(0) 0 ms
V[17:04:18.623] >>> {"id":0,"jsonrpc":"2.0","result":{"capabilities":{"codeActionProvider":{"codeActionKinds":["quickfix","refactor","info"]},"completionProvider":{"resolveProvider":false,"triggerCharacters":[".",">",":"]},"declarationProvider":true,"definitionProvider":true,"documentFormattingProvider":true,"documentHighlightProvider":true,"documentOnTypeFormattingProvider":{"firstTriggerCharacter":"\n","moreTriggerCharacter":[]},"documentRangeFormattingProvider":true,"documentSymbolProvider":true,"executeCommandProvider":{"commands":["clangd.applyFix","clangd.applyTweak"]},"hoverProvider":true,"referencesProvider":true,"renameProvider":{"prepareProvider":true},"signatureHelpProvider":{"triggerCharacters":["(",","]},"textDocumentSync":2,"typeHierarchyProvider":true,"workspaceSymbolProvider":true}}}

V[17:04:18.625] <<< {"jsonrpc":"2.0","method":"initialized","params":{}}

I[17:04:18.625] <-- initialized
I[17:04:18.625] unhandled notification initialized
V[17:04:18.631] <<< {"jsonrpc":"2.0","method":"textDocument/didOpen","params":{"textDocument":{"languageId":"cpp","text":"#include <cstdio>\n#include <iostream>\n#include <string>\n#include <vector>\n#include <chrono>\n#include <thread>\n#include <map>\n\n#include <signal.h>\n#include <sys/epoll.h>\n#include <sys/poll.h>\n#include <unistd.h>\n#include <pthread.h>\n#include <fcntl.h>\n\n#include <opencv2/opencv.hpp>\n\n#include \"render.hpp\"\n#include \"v4l2capture.hpp\"\n#include \"replxx.hxx\"\n#include \"message.hpp\"\n\nclass RenderWorker\n{\npublic:\nstruct Commit {};\n\n    RenderWorker(Render& render_) :\n        render(render_)\n    {}\n\n    messaging::Sender getSender()\n    {\n        return incoming;\n    }\n\n    void run()\n    {\n        try {\n            for(;;) {\n                incoming.wait()\n                    .handle<std::shared_ptr<PixelBufferBase>>(\n                        [&](std::shared_ptr<PixelBufferBase>& pbuf)\n                        {\n                            render.updateTexture(pbuf);\n                        }\n                    )\n                    .handle<Commit>(\n                        [&](Commit&)\n                        {\n                            render.render(0);\n                        }\n                    );\n            }\n        } catch(messaging::CloseQueue&) {\n        }\n    }\n\n    void done()\n    {\n        getSender().send(messaging::CloseQueue());\n    }\n\nprivate:\n    Render& render;\n    messaging::Receiver incoming;\n    void (RenderWorker::*state)();\n};\n\nclass CaptureWorker\n{\npublic:\n    struct PreviewAll {};\n\n    struct PreviewOne\n    {\n        PreviewOne(int num_ = 0) :\n            num(num_)\n        {}\n\n        int num;\n    };\n\n    CaptureWorker(std::vector<v4l2::Capture>& caps, enum v4l2::PixFormat pixFormat,\n                  const std::vector<std::vector<PixelBufferBase>>& bufBank,\n                  messaging::Sender render_) :\n        captures(caps),\n        render(render_)\n    {\n        for (size_t i = 0; i < captures.size(); i++) {\n            captures[i].open(\"/dev/video\" + std::to_string(i), pixFormat, bufBank[i]);\n            captures[i].start();\n        }\n    }\n\n    void run()\n    {\n        try {\n            for (;;) {\n                incoming.wait()\n                    .handle<PreviewAll>(\n                        [&](const PreviewAll&)\n                        {\n                            epoll_fd = epoll_create1(0);\n\n                            for (size_t i = 0; i < captures.size(); i++) {\n                                struct epoll_event event = {};\n                                event.data.u32 = i;\n                                event.events = EPOLLIN; // do not use edge trigger\n                                int ret = epoll_ctl(epoll_fd, EPOLL_CTL_ADD, captures[i].getFd(),\n                                        &event);\n                                if (ret == -1)\n                                    throw std::runtime_error(\"EPOLL_CTL_ADD error\");\n                            }\n\n                            while (incoming.empty()) {\n                                std::vector<struct epoll_event> events(captures.size());\n                                int nevent = epoll_wait(epoll_fd, events.data(), events.size(), -1);\n                                if (nevent == -1) {\n                                    if (errno != EINTR)\n                                        throw std::runtime_error(\"epoll_wait error, erron: \" + std::to_string(errno));\n                                }\n\n                                for (int i = 0; i < nevent; i++) {\n                                    int data = events[i].data.u32;\n                                    std::shared_ptr<PixelBufferBase> pb(captures[data].dequeBuffer());\n                                    render.send(pb);\n                                }\n                                render.send(RenderWorker::Commit());\n                            }\n\n                            // do not stop, bug in kernel driver\n                            // for (auto& m : captures) {\n                                // m.stop();\n                            // }\n                            close(epoll_fd);\n                        }\n                    )\n                    .handle<PreviewOne>(\n                        [&](const PreviewOne& msg)\n                        {\n                            currentCapture = msg.num;\n                            epoll_fd = epoll_create1(0);\n                            {\n                                // captures[currentCapture].start();\n                                struct epoll_event event = {};\n                                event.data.u32 = currentCapture;\n                                event.events = EPOLLIN;\n                                int ret = epoll_ctl(epoll_fd, EPOLL_CTL_ADD, captures[currentCapture].getFd(), &event);\n                                if (ret == -1)\n                                    throw std::runtime_error(\"EPOLL_CTL_ADD error\");\n                            }\n\n                            while (incoming.empty()) {\n                                struct epoll_event event;\n                                int nevent = epoll_wait(epoll_fd, &event, 1, -1);\n                                if (nevent == -1) {\n                                    if (errno != EINTR)\n                                        throw std::runtime_error(\"epoll_wait error, erron: \" + std::to_string(errno));\n                                }\n\n                                int data = event.data.u32;\n                                std::shared_ptr<PixelBufferBase> pb(captures[data].dequeBuffer());\n                                render.send(pb);\n                                render.send(RenderWorker::Commit());\n                            }\n\n                            // do not stop, bug in kernel driver\n                            // captures[currentCapture].stop();\n                            close(epoll_fd);\n                        }\n                    );\n            }\n        } catch (messaging::CloseQueue&) {\n        }\n    }\n\n    void done()\n    {\n        getSender().send(messaging::CloseQueue());\n    }\n\n    messaging::Sender getSender()\n    {\n        return incoming;\n    }\n\nprivate:\n    std::vector<v4l2::Capture>& captures;\n    int epoll_fd;\n    int currentCapture = 0;\n\n    messaging::Receiver incoming;\n    messaging::Sender render;\n    messaging::Sender calibrator;\n    void (CaptureWorker::*state)();\n};\n\n#if 0\nclass CliWorker\n{\nstruct Input\n{\n    std::string str;\n    Input(const std::string str_) :\n        str(str_)\n    {}\n};\n\npublic:\n    CliWorker(replxx::Replxx& rx_, messaging::Sender capture_) :\n        rx(rx_),\n        capture(capture_)\n    {\n    }\n\n    void run()\n    {\n        state = &CliWorker::intrinsicStep;\n        try {\n            for (;;) {\n                (this->*state)();\n            }\n        } catch (messaging::CloseQueue&) {\n        }\n    }\n\n    void done()\n    {\n        getSender().send(messaging::CloseQueue());\n    }\n\n    messaging::Sender getSender()\n    {\n        return incoming;\n    }\n\nprivate:\n    void intrinsicStep()\n    {\n        capture.send(v4l2::PreviewAll());\n        incoming.wait()\n            .handle<Input>(\n                [&](const Input& in)\n                {\n                    capture.send();\n                    state = &CliWorker::calibOneStep;\n                }\n            );\n    }\n\n    void calibOneStep()\n    {\n        // capture.send(messaging::);\n        // incoming.wait()\n            // .handle<>(\n            // );\n    }\n\n    replxx::Replxx& rx;\n    messaging::Receiver incoming;\n    messaging::Sender capture;\n\n    void (CliWorker::*state)();\n};\n#endif\n\n// namespace menu\n// {\n\n// struct Pack\n// {\n    // std::string help;\n\n// };\n\n// struct MsgPack\n// {\n    // std::map<std::string>\n// };\n\n// }\n\nint main()\n{\n    int cameraNum = 4;\n    int qBufNum = 4;\n    int imgWidth = 1280;\n    int imgHeight = 800;\n    enum v4l2::PixFormat pixelFmt = v4l2::PixFormat::XBGR32;\n    int pixelSize = pixelFmt == v4l2::PixFormat::XBGR32 ? 4 : 4;\n    int imgSize = imgHeight * imgWidth * pixelSize;\n\n    // signal(SIGINT, [](int){ keepRunning = false; });\n    std::vector<v4l2::Capture> captures(cameraNum);\n\n    try {\n\n        Render render(imgWidth, imgHeight, pixelSize, cameraNum, qBufNum);\n        render.init();\n        std::vector<std::vector<PixelBufferBase>> bufBank = render.getBufferBank();\n\n        RenderWorker renderWorker(render);\n        CaptureWorker capWorker(captures, pixelFmt, bufBank, renderWorker.getSender());\n\n        // cmdline interface\n        using namespace std::placeholders;\n        using Replxx = replxx::Replxx;\n        std::string input;\n\n        replxx::Replxx rx;\n        rx.install_window_change_handler();\n\n        rx.set_max_history_size(128);\n        rx.set_max_hint_rows(3);\n        rx.bind_key( Replxx::KEY::BACKSPACE, std::bind( &Replxx::invoke, &rx, Replxx::ACTION::DELETE_CHARACTER_LEFT_OF_CURSOR, _1 ) );\n        rx.bind_key( Replxx::KEY::DELETE, std::bind( &Replxx::invoke, &rx, Replxx::ACTION::DELETE_CHARACTER_UNDER_CURSOR, _1 ) );\n        rx.bind_key( Replxx::KEY::LEFT, std::bind( &Replxx::invoke, &rx, Replxx::ACTION::MOVE_CURSOR_LEFT, _1 ) );\n        rx.bind_key( Replxx::KEY::RIGHT, std::bind( &Replxx::invoke, &rx, Replxx::ACTION::MOVE_CURSOR_RIGHT, _1 ) );\n        rx.bind_key( Replxx::KEY::UP, std::bind( &Replxx::invoke, &rx, Replxx::ACTION::HISTORY_PREVIOUS, _1 ) );\n        rx.bind_key( Replxx::KEY::DOWN, std::bind( &Replxx::invoke, &rx, Replxx::ACTION::HISTORY_NEXT, _1 ) );\n        rx.bind_key( Replxx::KEY::PAGE_UP, std::bind( &Replxx::invoke, &rx, Replxx::ACTION::HISTORY_FIRST, _1 ) );\n        rx.bind_key( Replxx::KEY::PAGE_DOWN, std::bind( &Replxx::invoke, &rx, Replxx::ACTION::HISTORY_LAST, _1 ) );\n        rx.bind_key( Replxx::KEY::HOME, std::bind( &Replxx::invoke, &rx, Replxx::ACTION::MOVE_CURSOR_TO_BEGINING_OF_LINE, _1 ) );\n        rx.bind_key( Replxx::KEY::END, std::bind( &Replxx::invoke, &rx, Replxx::ACTION::MOVE_CURSOR_TO_END_OF_LINE, _1 ) );\n        rx.bind_key( Replxx::KEY::TAB, std::bind( &Replxx::invoke, &rx, Replxx::ACTION::COMPLETE_LINE, _1 ) );\n        std::cout\n            << \"Welcome to Replxx\\n\"\n            << \"Press 'tab' to view autocompletions\\n\"\n            << \"Type '.help' for help\\n\"\n            << \"Type '.quit' or '.exit' to exit\\n\\n\";\n\n        std::string prompt {\"\\x1b[1;32mreplxx\\x1b[0m> \"};\n\n        // run thread\n        std::thread renderThread(&RenderWorker::run, &renderWorker);\n        std::thread captureThread(&CaptureWorker::run, &capWorker);\n        messaging::Sender capQueue(capWorker.getSender());\n        capQueue.send(CaptureWorker::PreviewAll());\n\n        std::string help1(std::string(\"input number: 0 to \") + std::to_string(captures.size() - 1) + \" to select device\");\n\n        std::string help2(std::string(\"Input:\\n\") +\n                          \"\\t\\'b\\': back\");\n\n        const std::string* phelp = &help1;\n\n        std::function<void(void)>* stage;\n        std::function<void(void)> f2;\n\n        std::function<void(void)> f1 =\n            [&]()\n            {\n                int num;\n                try {\n                    num = std::stoi(input);\n\n                    if (num >= captures.size()) {\n                        throw(num);\n                    }\n\n                    capQueue.send(CaptureWorker::PreviewOne(num));\n                    stage = &f2;\n                    phelp = &help2;\n                } catch (...) {\n                    std::cout << \"invalid input\" << std::endl;\n                }\n            };\n\n        f2 =\n            [&]()\n            {\n                if (input.compare(\"b\") == 0) {\n                    capQueue.send(CaptureWorker::PreviewAll());\n                    stage = &f1;\n                    phelp = &help2;\n                } else {\n                    std::cout << \"invalid input\" << std::endl;\n                }\n            };\n        stage = &f1;\n\n        for (;;) {\n            char const* cinput{ nullptr };\n\n            std::cout << *phelp << std::endl;\n\n            do {\n                cinput = rx.input(prompt);\n            } while ( ( cinput == nullptr ) && ( errno == EAGAIN ) );\n\n            if (cinput == nullptr) {\n                break;\n            }\n\n            // change cinput into a std::string\n            // easier to manipulate\n            // std::string input {cinput};\n            input = std::string(cinput);\n\n            if (input.empty()) {\n                // user hit enter on an empty line\n\n                continue;\n\n            } else if (input.compare(0, 5, \".quit\") == 0 || input.compare(0, 5, \".exit\") == 0) {\n                // exit the repl\n\n                rx.history_add(input);\n                break;\n\n            } else if (input.compare(0, 5, \".help\") == 0) {\n                // display the help output\n                std::cout\n                    << \".help\\n\\tdisplays the help output\\n\"\n                    << \".quit\\n\\texit the repl\\n\"\n                    << \".exit\\n\\texit the repl\\n\"\n                    << \".clear\\n\\tclears the screen\\n\"\n                    << \".history\\n\\tdisplays the history output\\n\"\n                    << \".prompt <str>\\n\\tset the repl prompt to <str>\\n\";\n\n                rx.history_add(input);\n                continue;\n\n            } else if (input.compare(0, 7, \".prompt\") == 0) {\n                // set the repl prompt text\n                auto pos = input.find(\" \");\n                if (pos == std::string::npos) {\n                    std::cout << \"Error: '.prompt' missing argument\\n\";\n                } else {\n                    prompt = input.substr(pos + 1) + \" \";\n                }\n\n                rx.history_add(input);\n                continue;\n\n            } else if (input.compare(0, 8, \".history\") == 0) {\n                // display the current history\n                for (size_t i = 0, sz = rx.history_size(); i < sz; ++i) {\n                    std::cout << std::setw(4) << i << \": \" << rx.history_line(i) << \"\\n\";\n                }\n\n                rx.history_add(input);\n                continue;\n\n            } else if (input.compare(0, 6, \".clear\") == 0) {\n                // clear the screen\n                rx.clear_screen();\n\n                rx.history_add(input);\n                continue;\n\n            } else {\n                // default action\n\n                (*stage)();\n\n                rx.history_add( input );\n                continue;\n            }\n        }\n\n        capWorker.done();\n        renderWorker.done();\n        captureThread.join();\n        renderThread.join();\n    } catch (const std::exception& e) {\n        std::cerr << e.what() << std::endl;\n        return -1;\n    }\n\n    return 0;\n}\n","uri":"file:///opt/samba/nxf47746/project/learn-test/cv-fisheye/src/main.cpp","version":1}}}

I[17:04:18.631] <-- textDocument/didOpen
I[17:04:18.631] Enqueueing 17 commands for indexing
I[17:04:18.631] Updating file /opt/samba/nxf47746/project/learn-test/cv-fisheye/src/main.cpp with command 
[/opt/samba/nxf47746/project/learn-test/cv-fisheye/build/src]
/opt/samba/nxf47746/project/sdk/yocto/4.14.98-wayland/sysroots/x86_64-pokysdk-linux/usr/bin/aarch64-poky-linux/aarch64-poky-linux-g++ -target aarch64-poky-linux --driver-mode=g++ --sysroot=/opt/samba/nxf47746/project/sdk/yocto/4.14.98-wayland/sysroots/aarch64-poky-linux -isystem /opt/samba/nxf47746/project/sdk/yocto/4.14.98-wayland/sysroots/aarch64-poky-linux/usr/local/include -isystem /opt/samba/nxf47746/project/sdk/yocto/4.14.98-wayland/sysroots/aarch64-poky-linux/usr/include/opencv4 -I/opt/samba/nxf47746/project/learn-test/cv-fisheye/thirdparty/replxx/include -O2 -pipe -g -feliminate-unused-debug-types -g -o CMakeFiles/fisheye.dir/main.cpp.o -c /opt/samba/nxf47746/project/learn-test/cv-fisheye/src/main.cpp -fsyntax-only -resource-dir=/usr/lib/llvm-10/lib/clang/10.0.0
V[17:04:18.633] Preamble for file /opt/samba/nxf47746/project/learn-test/cv-fisheye/src/main.cpp cannot be reused. Attempting to rebuild it.
V[17:04:18.752] BackgroundIndex: building version 1 after loading index from disk
V[17:04:19.351] BackgroundIndex: serving version 1 (33674506 bytes)
V[17:04:19.771] index AST for /opt/samba/nxf47746/project/learn-test/cv-fisheye/src/main.cpp (main=false): 
  symbol slab: 39702 symbols, 10218608 bytes
  ref slab: 0 symbols, 0 refs, 136 bytes
  relations slab: 243 relations, 5144 bytes
V[17:04:20.359] Built preamble of size 10704680 for file /opt/samba/nxf47746/project/learn-test/cv-fisheye/src/main.cpp
V[17:04:20.366] Trying to fix unresolved name "shared_ptr" in scopes: [std::]
V[17:04:20.366] Dex query tree: (LIMIT 10000 (& S=std:: T=dpt T=ptr T=edp T=har T=red T=are T=sha ?=Restricted For Code Completion))
V[17:04:20.366] Dex query tree: (LIMIT 10000 (& S=std:: T=dpt T=edp T=ptr T=har T=red T=are T=sha ?=Restricted For Code Completion))
V[17:04:20.370] Trying to fix unresolved name "vector" in scopes: [std::]
V[17:04:20.370] Dex query tree: (LIMIT 10000 (& S=std:: T=cto T=vec T=ect T=tor ?=Restricted For Code Completion))
V[17:04:20.370] Dex query tree: (LIMIT 10000 (& S=std:: T=cto T=vec T=ect T=tor ?=Restricted For Code Completion))
V[17:04:20.373] Trying to fix unresolved name "render_" in scopes: []
V[17:04:20.373] Dex query tree: (LIMIT 10000 (& T=ren T=end T=nde T=der S= ?=Restricted For Code Completion))
V[17:04:20.374] Dex query tree: (LIMIT 10000 (& T=ren T=end T=der T=nde S= ?=Restricted For Code Completion))
V[17:04:20.380] Trying to fix unresolved name "bufBank" in scopes: []
V[17:04:20.380] Dex query tree: (LIMIT 10000 (& T=ank T=fba T=ban T=ufb T=buf S= ?=Restricted For Code Completion))
V[17:04:20.380] Dex query tree: (LIMIT 10000 (& T=ank T=fba T=ban T=ufb T=buf S= ?=Restricted For Code Completion))
V[17:04:20.385] Trying to fix unresolved name "runtime_error" in scopes: [std::]
V[17:04:20.385] Dex query tree: (LIMIT 10000 (& S=std:: T=mee T=eer T=run T=nti T=rro T=ror T=err T=unt T=ime T=tim ?=Restricted For Code Completion))
V[17:04:20.385] Dex query tree: (LIMIT 10000 (& S=std:: T=mee T=run T=eer T=nti T=ror T=rro T=err T=unt T=ime T=tim ?=Restricted For Code Completion))
V[17:04:20.386] Trying to fix unresolved name "vector" in scopes: [std::]
V[17:04:20.388] Trying to fix unresolved name "events" in scopes: []
V[17:04:20.388] Trying to fix unresolved name "errno" in scopes: []
V[17:04:20.389] Trying to fix unresolved name "EINTR" in scopes: []
V[17:04:20.399] index AST for /opt/samba/nxf47746/project/learn-test/cv-fisheye/src/main.cpp (main=true): 
  symbol slab: 26 symbols, 10256 bytes
  ref slab: 17 symbols, 31 refs, 4640 bytes
  relations slab: 0 relations, 24 bytes
I[17:04:20.400] --> textDocument/publishDiagnostics
V[17:04:20.400] >>> {"jsonrpc":"2.0","method":"textDocument/publishDiagnostics","params":{"diagnostics":[{"code":"pp_file_not_found","message":"'cstdio' file not found","range":{"end":{"character":17,"line":0},"start":{"character":9,"line":0}},"relatedInformation":[],"severity":1,"source":"clang"},{"code":"no_member","message":"No member named 'shared_ptr' in namespace 'std'","range":{"end":{"character":43,"line":41},"start":{"character":33,"line":41}},"relatedInformation":[],"severity":1,"source":"clang"},{"code":"ref_non_value","message":"'PixelBufferBase' does not refer to a value","range":{"end":{"character":59,"line":41},"start":{"character":44,"line":41}},"relatedInformation":[{"location":{"range":{"end":{"character":21,"line":235},"start":{"character":6,"line":235}},"uri":"file:///opt/samba/nxf47746/project/learn-test/cv-fisheye/src/message.hpp"},"message":"Declared here"}],"severity":1,"source":"clang"},{"code":"no_member_template","message":"No template named 'vector' in namespace 'std'","range":{"end":{"character":29,"line":83},"start":{"character":23,"line":83}},"relatedInformation":[],"severity":1,"source":"clang"},{"code":"no_member_template","message":"No template named 'vector' in namespace 'std'","range":{"end":{"character":35,"line":84},"start":{"character":29,"line":84}},"relatedInformation":[],"severity":1,"source":"clang"},{"code":"no_member","message":"No member named 'vector' in namespace 'std'","range":{"end":{"character":47,"line":84},"start":{"character":41,"line":84}},"relatedInformation":[],"severity":1,"source":"clang"},{"code":"ref_non_value","message":"'PixelBufferBase' does not refer to a value","range":{"end":{"character":63,"line":84},"start":{"character":48,"line":84}},"relatedInformation":[{"location":{"range":{"end":{"character":21,"line":235},"start":{"character":6,"line":235}},"uri":"file:///opt/samba/nxf47746/project/learn-test/cv-fisheye/src/message.hpp"},"message":"Declared here"}],"severity":1,"source":"clang"},{"code":"no_member_template","message":"No template named 'vector' in namespace 'std'","range":{"end":{"character":15,"line":188},"start":{"character":9,"line":188}},"relatedInformation":[],"severity":1,"source":"clang"},{"code":"undeclared_var_use_suggest","message":"Use of undeclared identifier 'render_'; did you mean 'render'? (fix available)","range":{"end":{"character":22,"line":87},"start":{"character":15,"line":87}},"relatedInformation":[{"location":{"range":{"end":{"character":28,"line":193},"start":{"character":22,"line":193}},"uri":"file:///opt/samba/nxf47746/project/learn-test/cv-fisheye/src/main.cpp"},"message":"'render' declared here"}],"severity":1,"source":"clang"},{"code":"undeclared_var_use","message":"Use of undeclared identifier 'bufBank'","range":{"end":{"character":81,"line":90},"start":{"character":74,"line":90}},"relatedInformation":[],"severity":1,"source":"clang"},{"code":"no_member","message":"No member named 'to_string' in namespace 'std'","range":{"end":{"character":58,"line":90},"start":{"character":49,"line":90}},"relatedInformation":[],"severity":1,"source":"clang"},{"code":"no_member","message":"No member named 'runtime_error' in namespace 'std'","range":{"end":{"character":60,"line":112},"start":{"character":47,"line":112}},"relatedInformation":[],"severity":1,"source":"clang"},{"code":"no_member","message":"No member named 'vector' in namespace 'std'","range":{"end":{"character":43,"line":116},"start":{"character":37,"line":116}},"relatedInformation":[],"severity":1,"source":"clang"},{"code":"expected_expression","message":"Expected expression","range":{"end":{"character":50,"line":116},"start":{"character":44,"line":116}},"relatedInformation":[],"severity":1,"source":"clang"},{"code":"undeclared_var_use","message":"Use of undeclared identifier 'events'","range":{"end":{"character":72,"line":117},"start":{"character":66,"line":117}},"relatedInformation":[],"severity":1,"source":"clang"},{"code":"undeclared_var_use","message":"Use of undeclared identifier 'events'","range":{"end":{"character":87,"line":117},"start":{"character":81,"line":117}},"relatedInformation":[],"severity":1,"source":"clang"},{"code":"undeclared_var_use","message":"Use of undeclared identifier 'errno'","range":{"end":{"character":45,"line":119},"start":{"character":40,"line":119}},"relatedInformation":[],"severity":1,"source":"clang"},{"code":"undeclared_var_use","message":"Use of undeclared identifier 'EINTR'","range":{"end":{"character":54,"line":119},"start":{"character":49,"line":119}},"relatedInformation":[],"severity":1,"source":"clang"},{"code":"no_member","message":"No member named 'runtime_error' in namespace 'std'","range":{"end":{"character":64,"line":120},"start":{"character":51,"line":120}},"relatedInformation":[],"severity":1,"source":"clang"},{"code":"no_member","message":"No member named 'to_string' in namespace 'std'","range":{"end":{"character":109,"line":120},"start":{"character":100,"line":120}},"relatedInformation":[],"severity":1,"source":"clang"},{"code":"fatal_too_many_errors","message":"Too many errors emitted, stopping now","range":{"end":{"character":0,"line":0},"start":{"character":0,"line":0}},"relatedInformation":[],"severity":1,"source":"clang"}],"uri":"file:///opt/samba/nxf47746/project/learn-test/cv-fisheye/src/main.cpp"}}

Here is the log, and this issue shouldn't been caused by the query-driver, because the c header file is located right.

@sheeaza
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sheeaza commented Sep 23, 2019 

// Should we also preserve flags like "-sysroot", "-nostdinc" ?               
const llvm::StringRef Args[] = {Driver, "-E", "-x", Lang, "-", "-v"};         
                                                                              
if (int RC = llvm::sys::ExecuteAndWait(Driver, Args, /*Env=*/llvm::None,      
                                       Redirects)) {                          
  elog("System include extraction: driver execution failed with return code: "
       "{0}",                                                                 
       llvm::to_string(RC));                                                  
  return {};                                                                  
}

in clang-tools-extra/clangd/QueryDriverDatabase.cpp [line 123] , it seem that clangd didn't preserve flags "-sysroot".

@topisani
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This patch fixed the issue for me: https://reviews.llvm.org/D73453

@topisani
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Before applying the mentioned patch, clangd doesnt find c++ includes, and others. It does locate GCCs own libraries, but not libstdc++

Below is the relevant part of the log, when clangd is called with /usr/bin/clangd --log=verbose "--query-driver=/home/topisani/dev/otto-bsp/build/tmp/work/otto_proto_v1-poky-linux-gnueabi/otto-core/*/recipe-sysroot-native/usr/bin/arm-poky-linux-gnueabi/arm-poky-linux-gnueabi-*"

As maybe obvious, this is in a yocto system cross compiling for arm.

V[10:30:38.404] System include extraction: adding  /home/topisani/dev/otto-bsp/build/tmp/work/otto_proto_v1-poky-linux-gnueabi/otto-core/1.0.0+git999-r0/recipe-sysroot-native/usr/bin/arm-poky-linux-gnueabi/../../lib/arm-poky-linux-gnueabi/gcc/arm-poky-linux-gnueabi/9.2.0/include
V[10:30:38.404] System include extraction: adding  /home/topisani/dev/otto-bsp/build/tmp/work/otto_proto_v1-poky-linux-gnueabi/otto-core/1.0.0+git999-r0/recipe-sysroot-native/usr/bin/arm-poky-linux-gnueabi/../../lib/arm-poky-linux-gnueabi/gcc/arm-poky-linux-gnueabi/9.2.0/include-fixed
I[10:30:38.404] System include extractor: succesfully executed /home/topisani/dev/otto-bsp/build/tmp/work/otto_proto_v1-poky-linux-gnueabi/otto-core/1.0.0+git999-r0/recipe-sysroot-native/usr/bin/arm-poky-linux-gnueabi/arm-poky-linux-gnueabi-g++, got includes: "/home/topisani/dev/otto-bsp/build/tmp/work/otto_proto_v1-poky-linux-gnueabi/otto-core/1.0.0+git999-r0/recipe-sysroot-native/usr/bin/arm-poky-linux-gnueabi/../../lib/arm-poky-linux-gnueabi/gcc/arm-poky-linux-gnueabi/9.2.0/include, /home/topisani/dev/otto-bsp/build/tmp/work/otto_proto_v1-poky-linux-gnueabi/otto-core/1.0.0+git999-r0/recipe-sysroot-native/usr/bin/arm-poky-linux-gnueabi/../../lib/arm-poky-linux-gnueabi/gcc/arm-poky-linux-gnueabi/9.2.0/include-fixed"
I[10:30:38.404] Updating file /home/topisani/dev/otto-bsp/build/workspace/sources/otto-core/src/services/engine_manager.cpp with command 
[/home/topisani/dev/otto-bsp/build/tmp/work/otto_proto_v1-poky-linux-gnueabi/otto-core/1.0.0+git999-r0/otto-core-1.0.0+git999]
/home/topisani/dev/otto-bsp/build/tmp/work/otto_proto_v1-poky-linux-gnueabi/otto-core/1.0.0+git999-r0/recipe-sysroot-native/usr/bin/arm-poky-linux-gnueabi/arm-poky-linux-gnueabi-g++ -target arm-poky-linux-gnueabi --driver-mode=g++ -DLOGURU_STACKTRACES=0 -DOTTO_BOARD_PARTS_AUDIO_RTAUDIO -DOTTO_BOARD_PARTS_CONTROLLER_TOOT_MCU_FIFO -DOTTO_BOARD_PARTS_UI_EGL -DOTTO_BOARD_RPI_PROTO_1 -DOTTO_BUILD_DOCS=0 -DOTTO_BUILD_TESTS=1 -DOTTO_DEBUG_UI=0 -DOTTO_ENABLE_ASAN=0 -DOTTO_ENABLE_LTO=0 -DOTTO_ENABLE_TIMERS=0 -DOTTO_ENABLE_UBSAN=0 -DOTTO_USE_FBCP=0 -DOTTO_USE_LIBCXX=0 -D__LINUX_ALSA__ -I/home/topisani/dev/otto-bsp/build/workspace/sources/otto-core/src/. -I/home/topisani/dev/otto-bsp/build/workspace/sources/otto-core/boards/rpi-proto-1/include -I/home/topisani/dev/otto-bsp/build/workspace/sources/otto-core/boards/parts/ui/egl/include -I/opt/vc/include -I/home/topisani/dev/otto-bsp/build/workspace/sources/otto-core/boards/parts/audio/rtaudio/include -I/home/topisani/dev/otto-bsp/build/workspace/sources/otto-core/boards/parts/controller/toot-mcu-fifo/include -I/home/topisani/dev/otto-bsp/build/workspace/sources/otto-core/external/fmt -I/home/topisani/dev/otto-bsp/build/workspace/sources/otto-core/external/lyra/include -isystem /home/topisani/dev/otto-bsp/build/workspace/sources/otto-core/external/include -isystem /home/topisani/dev/otto-bsp/build/workspace/sources/otto-core/external/nanovg/src -isystem /home/topisani/dev/otto-bsp/build/workspace/sources/otto-core/external/GSL -isystem /home/topisani/dev/otto-bsp/build/workspace/sources/otto-core/external/GSL/include -isystem external/include -isystem /home/topisani/dev/otto-bsp/build/workspace/sources/otto-core/external/foonathan_array/include -isystem /home/topisani/dev/otto-bsp/build/workspace/sources/otto-core/external/foonathan_type_safe/include -isystem /home/topisani/dev/otto-bsp/build/workspace/sources/otto-core/external/foonathan_type_safe/external/debug_assert -isystem /home/topisani/dev/otto-bsp/build/workspace/sources/otto-core/external/choreograph/src -mthumb -mfpu=neon-vfpv4 -mfloat-abi=hard -mcpu=cortex-a7 -fstack-protector-strong -D_FORTIFY_SOURCE=2 -Wformat -Wformat-security -Werror=format-security --sysroot=/home/topisani/dev/otto-bsp/build/tmp/work/otto_proto_v1-poky-linux-gnueabi/otto-core/1.0.0+git999-r0/recipe-sysroot -O2 -pipe -g -feliminate-unused-debug-types -fmacro-prefix-map=/home/topisani/dev/otto-bsp/build/tmp/work/otto_proto_v1-poky-linux-gnueabi/otto-core/1.0.0+git999-r0=/usr/src/debug/otto-core/1.0.0+git999-r0 -fdebug-prefix-map=/home/topisani/dev/otto-bsp/build/tmp/work/otto_proto_v1-poky-linux-gnueabi/otto-core/1.0.0+git999-r0=/usr/src/debug/otto-core/1.0.0+git999-r0 -fdebug-prefix-map=/home/topisani/dev/otto-bsp/build/tmp/work/otto_proto_v1-poky-linux-gnueabi/otto-core/1.0.0+git999-r0/recipe-sysroot= -fdebug-prefix-map=/home/topisani/dev/otto-bsp/build/tmp/work/otto_proto_v1-poky-linux-gnueabi/otto-core/1.0.0+git999-r0/recipe-sysroot-native= -Wno-psabi -fvisibility-inlines-hidden -mthumb -mfpu=neon-vfpv4 -mfloat-abi=hard -mcpu=cortex-a7 -fstack-protector-strong -D_FORTIFY_SOURCE=2 -Wformat -Wformat-security -Werror=format-security --sysroot=/home/topisani/dev/otto-bsp/build/tmp/work/otto_proto_v1-poky-linux-gnueabi/otto-core/1.0.0+git999-r0/recipe-sysroot -Wall -Wno-long-long -Wno-pedantic -Wno-c++14-compat -Wno-psabi -Wno-unknown-pragmas -Wno-vla -Wno-sign-compare -DNDEBUG -ffast-math -funsafe-math-optimizations -mfpu=neon-vfpv4 -std=c++17 -include /home/topisani/dev/otto-bsp/build/tmp/work/otto_proto_v1-poky-linux-gnueabi/otto-core/1.0.0+git999-r0/otto-core-1.0.0+git999/src/otto_DOCTEST_STATIC_LIB_FORCE_LINK_DUMMIES//dummy_47.h -o src/CMakeFiles/otto.dir/services/engine_manager.cpp.o -c /home/topisani/dev/otto-bsp/build/workspace/sources/otto-core/src/services/engine_manager.cpp -isystem /home/topisani/dev/otto-bsp/build/tmp/work/otto_proto_v1-poky-linux-gnueabi/otto-core/1.0.0+git999-r0/recipe-sysroot-native/usr/bin/arm-poky-linux-gnueabi/../../lib/arm-poky-linux-gnueabi/gcc/arm-poky-linux-gnueabi/9.2.0/include -isystem /home/topisani/dev/otto-bsp/build/tmp/work/otto_proto_v1-poky-linux-gnueabi/otto-core/1.0.0+git999-r0/recipe-sysroot-native/usr/bin/arm-poky-linux-gnueabi/../../lib/arm-poky-linux-gnueabi/gcc/arm-poky-linux-gnueabi/9.2.0/include-fixed -fsyntax-only -resource-dir=/usr/lib/clang/9.0.1
V[10:30:38.425] Ignored diagnostic. unknown argument: '-fmacro-prefix-map=/home/topisani/dev/otto-bsp/build/tmp/work/otto_proto_v1-poky-linux-gnueabi/otto-core/1.0.0+git999-r0=/usr/src/debug/otto-core/1.0.0+git999-r0'
V[10:30:38.432] Preamble for file /home/topisani/dev/otto-bsp/build/workspace/sources/otto-core/src/services/engine_manager.cpp cannot be reused. Attempting to rebuild it.
V[10:30:38.432] Ignored diagnostic. unknown warning option '-Wno-psabi'
V[10:30:38.433] Ignored diagnostic. unknown warning option '-Wno-psabi'
V[10:30:38.435] Ignored diagnostic. unknown warning option '-Wno-psabi'
V[10:30:38.435] Ignored diagnostic. unknown warning option '-Wno-psabi'
V[10:30:38.603] BackgroundIndex: building version 1 after loading index from disk
V[10:30:39.085] BackgroundIndex: serving version 1 (33924116 bytes)
V[10:30:39.101] Indexing /home/topisani/dev/otto-bsp/build/workspace/sources/otto-core/test/graphics.t.cpp (digest:=5D6F16F92072AA4E)
V[10:30:39.109] Ignored diagnostic. unknown argument: '-fmacro-prefix-map=/home/topisani/dev/otto-bsp/build/tmp/work/otto_proto_v1-poky-linux-gnueabi/otto-core/1.0.0+git999-r0=/usr/src/debug/otto-core/1.0.0+git999-r0'
V[10:30:39.110] Ignored diagnostic. unknown warning option '-Wno-psabi'
V[10:30:39.112] Ignored diagnostic. /home/topisani/dev/otto-bsp/build/workspace/sources/otto-core/test/graphics.t.hpp:3:10:'functional' file not found
V[10:30:40.072] index AST for /home/topisani/dev/otto-bsp/build/workspace/sources/otto-core/src/services/engine_manager.cpp (main=false):

@kadircet
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thanks for the logs @topisani I can see --sysroot=/home/topisani/dev/otto-bsp/build/tmp/work/otto_proto_v1-poky-linux-gnueabi/otto-core/1.0.0+git999-r0/recipe-sysroot in the command line arguments being passed to clang driver, I wonder why clang can't figure out where system directories are by looking at it.

what are the outputs of

/home/topisani/dev/otto-bsp/build/tmp/work/otto_proto_v1-poky-linux-gnueabi/otto-core/1.0.0+git999-r0/recipe-sysroot-native/usr/bin/arm-poky-linux-gnueabi/arm-poky-linux-gnueabi-g++ -E -v -xc++ /dev/null

and

/home/topisani/dev/otto-bsp/build/tmp/work/otto_proto_v1-poky-linux-gnueabi/otto-core/1.0.0+git999-r0/recipe-sysroot-native/usr/bin/arm-poky-linux-gnueabi/arm-poky-linux-gnueabi-g++ -E -v -xc++ /dev/null --sysroot=/home/topisani/dev/otto-bsp/build/tmp/work/otto_proto_v1-poky-linux-gnueabi/otto-core/1.0.0+git999-r0/recipe-sysroot

please include both stderr and stdout

@topisani
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$ /home/topisani/dev/otto-bsp/build/tmp/work/otto_proto_v1-poky-linux-gnueabi/otto-core/1.0.0+git999-r0/recipe-sysroot-native/usr/bin/arm-poky-linux-gnueabi/arm-poky-linux-gnueabi-g++ -E -v -xc++ /dev/null
Using built-in specs.
COLLECT_GCC=/home/topisani/dev/otto-bsp/build/tmp/work/otto_proto_v1-poky-linux-gnueabi/otto-core/1.0.0+git999-r0/recipe-sysroot-native/usr/bin/arm-poky-linux-gnueabi/arm-poky-linux-gnueabi-g++
Target: arm-poky-linux-gnueabi
Configured with: ../../../../../../work-shared/gcc-9.2.0-r0/gcc-9.2.0/configure --build=x86_64-linux --host=x86_64-linux --target=arm-poky-linux-gnueabi --prefix=/home/topisani/dev/otto-bsp/build/tmp/work/x86_64-linux/gcc-cross-arm/9.2.0-r0/recipe-sysroot-native/usr --exec_prefix=/home/topisani/dev/otto-bsp/build/tmp/work/x86_64-linux/gcc-cross-arm/9.2.0-r0/recipe-sysroot-native/usr --bindir=/home/topisani/dev/otto-bsp/build/tmp/work/x86_64-linux/gcc-cross-arm/9.2.0-r0/recipe-sysroot-native/usr/bin/arm-poky-linux-gnueabi --sbindir=/home/topisani/dev/otto-bsp/build/tmp/work/x86_64-linux/gcc-cross-arm/9.2.0-r0/recipe-sysroot-native/usr/bin/arm-poky-linux-gnueabi --libexecdir=/home/topisani/dev/otto-bsp/build/tmp/work/x86_64-linux/gcc-cross-arm/9.2.0-r0/recipe-sysroot-native/usr/libexec/arm-poky-linux-gnueabi --datadir=/home/topisani/dev/otto-bsp/build/tmp/work/x86_64-linux/gcc-cross-arm/9.2.0-r0/recipe-sysroot-native/usr/share --sysconfdir=/home/topisani/dev/otto-bsp/build/tmp/work/x86_64-linux/gcc-cross-arm/9.2.0-r0/recipe-sysroot-native/etc --sharedstatedir=/home/topisani/dev/otto-bsp/build/tmp/work/x86_64-linux/gcc-cross-arm/9.2.0-r0/recipe-sysroot-native/com --localstatedir=/home/topisani/dev/otto-bsp/build/tmp/work/x86_64-linux/gcc-cross-arm/9.2.0-r0/recipe-sysroot-native/var --libdir=/home/topisani/dev/otto-bsp/build/tmp/work/x86_64-linux/gcc-cross-arm/9.2.0-r0/recipe-sysroot-native/usr/lib/arm-poky-linux-gnueabi --includedir=/home/topisani/dev/otto-bsp/build/tmp/work/x86_64-linux/gcc-cross-arm/9.2.0-r0/recipe-sysroot-native/usr/include --oldincludedir=/home/topisani/dev/otto-bsp/build/tmp/work/x86_64-linux/gcc-cross-arm/9.2.0-r0/recipe-sysroot-native/usr/include --infodir=/home/topisani/dev/otto-bsp/build/tmp/work/x86_64-linux/gcc-cross-arm/9.2.0-r0/recipe-sysroot-native/usr/share/info --mandir=/home/topisani/dev/otto-bsp/build/tmp/work/x86_64-linux/gcc-cross-arm/9.2.0-r0/recipe-sysroot-native/usr/share/man --disable-silent-rules --disable-dependency-tracking --with-libtool-sysroot=/home/topisani/dev/otto-bsp/build/tmp/work/x86_64-linux/gcc-cross-arm/9.2.0-r0/recipe-sysroot-native --enable-clocale=generic --with-gnu-ld --enable-shared --enable-languages=c,c++ --enable-threads=posix --disable-multilib --enable-default-pie --enable-c99 --enable-long-long --enable-symvers=gnu --enable-libstdcxx-pch --program-prefix=arm-poky-linux-gnueabi- --without-local-prefix --enable-lto --disable-libssp --enable-libitm --disable-bootstrap --disable-libmudflap --with-system-zlib --with-linker-hash-style=sysv --enable-linker-build-id --with-ppl=no --with-cloog=no --enable-checking=release --enable-cheaders=c_global --without-isl --with-gxx-include-dir=/not/exist/usr/include/c++/9.2.0 --with-sysroot=/not/exist --with-build-sysroot=/home/topisani/dev/otto-bsp/build/tmp/work/x86_64-linux/gcc-cross-arm/9.2.0-r0/recipe-sysroot --enable-poison-system-directories --with-system-zlib --disable-static --disable-nls --with-glibc-version=2.28 --enable-initfini-array
Thread model: posix
gcc version 9.2.0 (GCC) 
COLLECT_GCC_OPTIONS='-E' '-v' '-shared-libgcc' '-mcpu=arm10tdmi' '-mtls-dialect=gnu' '-marm' '-march=armv5t'
 /home/topisani/dev/otto-bsp/build/tmp/work/otto_proto_v1-poky-linux-gnueabi/otto-core/1.0.0+git999-r0/recipe-sysroot-native/usr/bin/arm-poky-linux-gnueabi/../../libexec/arm-poky-linux-gnueabi/gcc/arm-poky-linux-gnueabi/9.2.0/cc1plus -E -quiet -v -iprefix /home/topisani/dev/otto-bsp/build/tmp/work/otto_proto_v1-poky-linux-gnueabi/otto-core/1.0.0+git999-r0/recipe-sysroot-native/usr/bin/arm-poky-linux-gnueabi/../../lib/arm-poky-linux-gnueabi/gcc/arm-poky-linux-gnueabi/9.2.0/ -D_GNU_SOURCE /dev/null -mcpu=arm10tdmi -mtls-dialect=gnu -marm -march=armv5t
ignoring nonexistent directory "/home/topisani/dev/otto-bsp/build/tmp/work/otto_proto_v1-poky-linux-gnueabi/otto-core/1.0.0+git999-r0/recipe-sysroot-native/usr/bin/arm-poky-linux-gnueabi/../../lib/arm-poky-linux-gnueabi/gcc/arm-poky-linux-gnueabi/9.2.0/../../../../../arm-poky-linux-gnueabi/include"
ignoring nonexistent directory "/not/exist/usr/include/c++/9.2.0"
ignoring nonexistent directory "/not/exist/usr/include/c++/9.2.0/arm-poky-linux-gnueabi"
ignoring nonexistent directory "/not/exist/usr/include/c++/9.2.0/backward"
ignoring duplicate directory "/home/topisani/dev/otto-bsp/build/tmp/work/otto_proto_v1-poky-linux-gnueabi/otto-core/1.0.0+git999-r0/recipe-sysroot-native/usr/bin/arm-poky-linux-gnueabi/../../lib/arm-poky-linux-gnueabi/gcc/../../../lib/arm-poky-linux-gnueabi/gcc/arm-poky-linux-gnueabi/9.2.0/include"
ignoring nonexistent directory "/not/exist/usr/lib/arm-poky-linux-gnueabi/9.2.0/include"
ignoring nonexistent directory "/not/exist/usr/local/include"
ignoring duplicate directory "/home/topisani/dev/otto-bsp/build/tmp/work/otto_proto_v1-poky-linux-gnueabi/otto-core/1.0.0+git999-r0/recipe-sysroot-native/usr/bin/arm-poky-linux-gnueabi/../../lib/arm-poky-linux-gnueabi/gcc/../../../lib/arm-poky-linux-gnueabi/gcc/arm-poky-linux-gnueabi/9.2.0/include-fixed"
ignoring nonexistent directory "/home/topisani/dev/otto-bsp/build/tmp/work/otto_proto_v1-poky-linux-gnueabi/otto-core/1.0.0+git999-r0/recipe-sysroot-native/usr/bin/arm-poky-linux-gnueabi/../../lib/arm-poky-linux-gnueabi/gcc/../../../lib/arm-poky-linux-gnueabi/gcc/arm-poky-linux-gnueabi/9.2.0/../../../../../arm-poky-linux-gnueabi/include"
ignoring nonexistent directory "/not/exist/usr/include"
#include "..." search starts here:
#include <...> search starts here:
 /home/topisani/dev/otto-bsp/build/tmp/work/otto_proto_v1-poky-linux-gnueabi/otto-core/1.0.0+git999-r0/recipe-sysroot-native/usr/bin/arm-poky-linux-gnueabi/../../lib/arm-poky-linux-gnueabi/gcc/arm-poky-linux-gnueabi/9.2.0/include
 /home/topisani/dev/otto-bsp/build/tmp/work/otto_proto_v1-poky-linux-gnueabi/otto-core/1.0.0+git999-r0/recipe-sysroot-native/usr/bin/arm-poky-linux-gnueabi/../../lib/arm-poky-linux-gnueabi/gcc/arm-poky-linux-gnueabi/9.2.0/include-fixed
End of search list.
# 1 "/dev/null"
# 1 "<built-in>"
# 1 "<command-line>"
# 1 "/dev/null"
COMPILER_PATH=/home/topisani/dev/otto-bsp/build/tmp/work/otto_proto_v1-poky-linux-gnueabi/otto-core/1.0.0+git999-r0/recipe-sysroot-native/usr/bin/arm-poky-linux-gnueabi/../../libexec/arm-poky-linux-gnueabi/gcc/arm-poky-linux-gnueabi/9.2.0/:/home/topisani/dev/otto-bsp/build/tmp/work/otto_proto_v1-poky-linux-gnueabi/otto-core/1.0.0+git999-r0/recipe-sysroot-native/usr/bin/arm-poky-linux-gnueabi/../../libexec/arm-poky-linux-gnueabi/gcc/
LIBRARY_PATH=/home/topisani/dev/otto-bsp/build/tmp/work/otto_proto_v1-poky-linux-gnueabi/otto-core/1.0.0+git999-r0/recipe-sysroot-native/usr/bin/arm-poky-linux-gnueabi/../../lib/arm-poky-linux-gnueabi/gcc/arm-poky-linux-gnueabi/9.2.0/:/home/topisani/dev/otto-bsp/build/tmp/work/otto_proto_v1-poky-linux-gnueabi/otto-core/1.0.0+git999-r0/recipe-sysroot-native/usr/bin/arm-poky-linux-gnueabi/../../lib/arm-poky-linux-gnueabi/gcc/
COLLECT_GCC_OPTIONS='-E' '-v' '-shared-libgcc' '-mcpu=arm10tdmi' '-mtls-dialect=gnu' '-marm' '-march=armv5t'

And with the sysroot

$ /home/topisani/dev/otto-bsp/build/tmp/work/otto_proto_v1-poky-linux-gnueabi/otto-core/1.0.0+git999-r0/recipe-sysroot-native/usr/bin/arm-poky-linux-gnueabi/arm-poky-linux-gnueabi-g++ -E -v -xc++ /dev/null --sysroot=/home/topisani/dev/otto-bsp/build/tmp/work/otto_proto_v1-poky-linux-gnueabi/otto-core/1.0.0+git999-r0/recipe-sysroot
Using built-in specs.
COLLECT_GCC=/home/topisani/dev/otto-bsp/build/tmp/work/otto_proto_v1-poky-linux-gnueabi/otto-core/1.0.0+git999-r0/recipe-sysroot-native/usr/bin/arm-poky-linux-gnueabi/arm-poky-linux-gnueabi-g++
Target: arm-poky-linux-gnueabi
Configured with: ../../../../../../work-shared/gcc-9.2.0-r0/gcc-9.2.0/configure --build=x86_64-linux --host=x86_64-linux --target=arm-poky-linux-gnueabi --prefix=/home/topisani/dev/otto-bsp/build/tmp/work/x86_64-linux/gcc-cross-arm/9.2.0-r0/recipe-sysroot-native/usr --exec_prefix=/home/topisani/dev/otto-bsp/build/tmp/work/x86_64-linux/gcc-cross-arm/9.2.0-r0/recipe-sysroot-native/usr --bindir=/home/topisani/dev/otto-bsp/build/tmp/work/x86_64-linux/gcc-cross-arm/9.2.0-r0/recipe-sysroot-native/usr/bin/arm-poky-linux-gnueabi --sbindir=/home/topisani/dev/otto-bsp/build/tmp/work/x86_64-linux/gcc-cross-arm/9.2.0-r0/recipe-sysroot-native/usr/bin/arm-poky-linux-gnueabi --libexecdir=/home/topisani/dev/otto-bsp/build/tmp/work/x86_64-linux/gcc-cross-arm/9.2.0-r0/recipe-sysroot-native/usr/libexec/arm-poky-linux-gnueabi --datadir=/home/topisani/dev/otto-bsp/build/tmp/work/x86_64-linux/gcc-cross-arm/9.2.0-r0/recipe-sysroot-native/usr/share --sysconfdir=/home/topisani/dev/otto-bsp/build/tmp/work/x86_64-linux/gcc-cross-arm/9.2.0-r0/recipe-sysroot-native/etc --sharedstatedir=/home/topisani/dev/otto-bsp/build/tmp/work/x86_64-linux/gcc-cross-arm/9.2.0-r0/recipe-sysroot-native/com --localstatedir=/home/topisani/dev/otto-bsp/build/tmp/work/x86_64-linux/gcc-cross-arm/9.2.0-r0/recipe-sysroot-native/var --libdir=/home/topisani/dev/otto-bsp/build/tmp/work/x86_64-linux/gcc-cross-arm/9.2.0-r0/recipe-sysroot-native/usr/lib/arm-poky-linux-gnueabi --includedir=/home/topisani/dev/otto-bsp/build/tmp/work/x86_64-linux/gcc-cross-arm/9.2.0-r0/recipe-sysroot-native/usr/include --oldincludedir=/home/topisani/dev/otto-bsp/build/tmp/work/x86_64-linux/gcc-cross-arm/9.2.0-r0/recipe-sysroot-native/usr/include --infodir=/home/topisani/dev/otto-bsp/build/tmp/work/x86_64-linux/gcc-cross-arm/9.2.0-r0/recipe-sysroot-native/usr/share/info --mandir=/home/topisani/dev/otto-bsp/build/tmp/work/x86_64-linux/gcc-cross-arm/9.2.0-r0/recipe-sysroot-native/usr/share/man --disable-silent-rules --disable-dependency-tracking --with-libtool-sysroot=/home/topisani/dev/otto-bsp/build/tmp/work/x86_64-linux/gcc-cross-arm/9.2.0-r0/recipe-sysroot-native --enable-clocale=generic --with-gnu-ld --enable-shared --enable-languages=c,c++ --enable-threads=posix --disable-multilib --enable-default-pie --enable-c99 --enable-long-long --enable-symvers=gnu --enable-libstdcxx-pch --program-prefix=arm-poky-linux-gnueabi- --without-local-prefix --enable-lto --disable-libssp --enable-libitm --disable-bootstrap --disable-libmudflap --with-system-zlib --with-linker-hash-style=sysv --enable-linker-build-id --with-ppl=no --with-cloog=no --enable-checking=release --enable-cheaders=c_global --without-isl --with-gxx-include-dir=/not/exist/usr/include/c++/9.2.0 --with-sysroot=/not/exist --with-build-sysroot=/home/topisani/dev/otto-bsp/build/tmp/work/x86_64-linux/gcc-cross-arm/9.2.0-r0/recipe-sysroot --enable-poison-system-directories --with-system-zlib --disable-static --disable-nls --with-glibc-version=2.28 --enable-initfini-array
Thread model: posix
gcc version 9.2.0 (GCC) 
COLLECT_GCC_OPTIONS='--sysroot=/home/topisani/dev/otto-bsp/build/tmp/work/otto_proto_v1-poky-linux-gnueabi/otto-core/1.0.0+git999-r0/recipe-sysroot' '-E' '-v' '-shared-libgcc' '-mcpu=arm10tdmi' '-mtls-dialect=gnu' '-marm' '-march=armv5t'
 /home/topisani/dev/otto-bsp/build/tmp/work/otto_proto_v1-poky-linux-gnueabi/otto-core/1.0.0+git999-r0/recipe-sysroot-native/usr/bin/arm-poky-linux-gnueabi/../../libexec/arm-poky-linux-gnueabi/gcc/arm-poky-linux-gnueabi/9.2.0/cc1plus -E -quiet -v -iprefix /home/topisani/dev/otto-bsp/build/tmp/work/otto_proto_v1-poky-linux-gnueabi/otto-core/1.0.0+git999-r0/recipe-sysroot-native/usr/bin/arm-poky-linux-gnueabi/../../lib/arm-poky-linux-gnueabi/gcc/arm-poky-linux-gnueabi/9.2.0/ -isysroot /home/topisani/dev/otto-bsp/build/tmp/work/otto_proto_v1-poky-linux-gnueabi/otto-core/1.0.0+git999-r0/recipe-sysroot -D_GNU_SOURCE /dev/null -mcpu=arm10tdmi -mtls-dialect=gnu -marm -march=armv5t
ignoring nonexistent directory "/home/topisani/dev/otto-bsp/build/tmp/work/otto_proto_v1-poky-linux-gnueabi/otto-core/1.0.0+git999-r0/recipe-sysroot-native/usr/bin/arm-poky-linux-gnueabi/../../lib/arm-poky-linux-gnueabi/gcc/arm-poky-linux-gnueabi/9.2.0/../../../../../arm-poky-linux-gnueabi/include"
ignoring duplicate directory "/home/topisani/dev/otto-bsp/build/tmp/work/otto_proto_v1-poky-linux-gnueabi/otto-core/1.0.0+git999-r0/recipe-sysroot-native/usr/bin/arm-poky-linux-gnueabi/../../lib/arm-poky-linux-gnueabi/gcc/../../../lib/arm-poky-linux-gnueabi/gcc/arm-poky-linux-gnueabi/9.2.0/include"
ignoring nonexistent directory "/home/topisani/dev/otto-bsp/build/tmp/work/otto_proto_v1-poky-linux-gnueabi/otto-core/1.0.0+git999-r0/recipe-sysroot/usr/local/include"
ignoring duplicate directory "/home/topisani/dev/otto-bsp/build/tmp/work/otto_proto_v1-poky-linux-gnueabi/otto-core/1.0.0+git999-r0/recipe-sysroot-native/usr/bin/arm-poky-linux-gnueabi/../../lib/arm-poky-linux-gnueabi/gcc/../../../lib/arm-poky-linux-gnueabi/gcc/arm-poky-linux-gnueabi/9.2.0/include-fixed"
ignoring nonexistent directory "/home/topisani/dev/otto-bsp/build/tmp/work/otto_proto_v1-poky-linux-gnueabi/otto-core/1.0.0+git999-r0/recipe-sysroot-native/usr/bin/arm-poky-linux-gnueabi/../../lib/arm-poky-linux-gnueabi/gcc/../../../lib/arm-poky-linux-gnueabi/gcc/arm-poky-linux-gnueabi/9.2.0/../../../../../arm-poky-linux-gnueabi/include"
#include "..." search starts here:
#include <...> search starts here:
 /home/topisani/dev/otto-bsp/build/tmp/work/otto_proto_v1-poky-linux-gnueabi/otto-core/1.0.0+git999-r0/recipe-sysroot-native/usr/bin/arm-poky-linux-gnueabi/../../lib/arm-poky-linux-gnueabi/gcc/arm-poky-linux-gnueabi/9.2.0/include
 /home/topisani/dev/otto-bsp/build/tmp/work/otto_proto_v1-poky-linux-gnueabi/otto-core/1.0.0+git999-r0/recipe-sysroot-native/usr/bin/arm-poky-linux-gnueabi/../../lib/arm-poky-linux-gnueabi/gcc/arm-poky-linux-gnueabi/9.2.0/include-fixed
 /home/topisani/dev/otto-bsp/build/tmp/work/otto_proto_v1-poky-linux-gnueabi/otto-core/1.0.0+git999-r0/recipe-sysroot/usr/include/c++/9.2.0
 /home/topisani/dev/otto-bsp/build/tmp/work/otto_proto_v1-poky-linux-gnueabi/otto-core/1.0.0+git999-r0/recipe-sysroot/usr/include/c++/9.2.0/arm-poky-linux-gnueabi
 /home/topisani/dev/otto-bsp/build/tmp/work/otto_proto_v1-poky-linux-gnueabi/otto-core/1.0.0+git999-r0/recipe-sysroot/usr/include/c++/9.2.0/backward
 /home/topisani/dev/otto-bsp/build/tmp/work/otto_proto_v1-poky-linux-gnueabi/otto-core/1.0.0+git999-r0/recipe-sysroot/usr/lib/arm-poky-linux-gnueabi/9.2.0/include
 /home/topisani/dev/otto-bsp/build/tmp/work/otto_proto_v1-poky-linux-gnueabi/otto-core/1.0.0+git999-r0/recipe-sysroot/usr/include
End of search list.
# 1 "/dev/null"
# 1 "<built-in>"
# 1 "<command-line>"
# 1 "/home/topisani/dev/otto-bsp/build/tmp/work/otto_proto_v1-poky-linux-gnueabi/otto-core/1.0.0+git999-r0/recipe-sysroot/usr/include/stdc-predef.h" 1 3 4
# 1 "<command-line>" 2
# 1 "/dev/null"
COMPILER_PATH=/home/topisani/dev/otto-bsp/build/tmp/work/otto_proto_v1-poky-linux-gnueabi/otto-core/1.0.0+git999-r0/recipe-sysroot-native/usr/bin/arm-poky-linux-gnueabi/../../libexec/arm-poky-linux-gnueabi/gcc/arm-poky-linux-gnueabi/9.2.0/:/home/topisani/dev/otto-bsp/build/tmp/work/otto_proto_v1-poky-linux-gnueabi/otto-core/1.0.0+git999-r0/recipe-sysroot-native/usr/bin/arm-poky-linux-gnueabi/../../libexec/arm-poky-linux-gnueabi/gcc/
LIBRARY_PATH=/home/topisani/dev/otto-bsp/build/tmp/work/otto_proto_v1-poky-linux-gnueabi/otto-core/1.0.0+git999-r0/recipe-sysroot-native/usr/bin/arm-poky-linux-gnueabi/../../lib/arm-poky-linux-gnueabi/gcc/arm-poky-linux-gnueabi/9.2.0/:/home/topisani/dev/otto-bsp/build/tmp/work/otto_proto_v1-poky-linux-gnueabi/otto-core/1.0.0+git999-r0/recipe-sysroot-native/usr/bin/arm-poky-linux-gnueabi/../../lib/arm-poky-linux-gnueabi/gcc/:/home/topisani/dev/otto-bsp/build/tmp/work/otto_proto_v1-poky-linux-gnueabi/otto-core/1.0.0+git999-r0/recipe-sysroot/lib/:/home/topisani/dev/otto-bsp/build/tmp/work/otto_proto_v1-poky-linux-gnueabi/otto-core/1.0.0+git999-r0/recipe-sysroot/usr/lib/arm-poky-linux-gnueabi/9.2.0/:/home/topisani/dev/otto-bsp/build/tmp/work/otto_proto_v1-poky-linux-gnueabi/otto-core/1.0.0+git999-r0/recipe-sysroot/usr/lib/
COLLECT_GCC_OPTIONS='--sysroot=/home/topisani/dev/otto-bsp/build/tmp/work/otto_proto_v1-poky-linux-gnueabi/otto-core/1.0.0+git999-r0/recipe-sysroot' '-E' '-v' '-shared-libgcc' '-mcpu=arm10tdmi' '-mtls-dialect=gnu' '-marm' '-march=armv5t'

So, as can be seen, the driver only outputs the paths for the gcc libs, if not supplied with the sysroot as an argument.

kadircet added a commit to llvm/llvm-project that referenced this issue Feb 5, 2020
@kadircet
[clangd] Preserve -nostdinc and --sysroot when calling query driver
6e8d6bc 
Solves this issue: clangd/clangd#157

This is my first contribution to an llvm project, so I hope I'm doing it right!

Patch by @topisani (Tobias Pisani)!

Reviewers: kadircet, klimek

Differential Revision: https://reviews.llvm.org/D73811
@sheeaza
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sheeaza commented Mar 18, 2020

This patch also fix my issue, thanks.

@sheeaza sheeaza closed this as completed Mar 18, 2020
arichardson pushed a commit to arichardson/llvm-project that referenced this issue Apr 1, 2020
@kadircet @arichardson
[clangd] Preserve -nostdinc and --sysroot when calling query driver
31e2908 
Solves this issue: clangd/clangd#157

This is my first contribution to an llvm project, so I hope I'm doing it right!

Patch by @topisani (Tobias Pisani)!

Reviewers: kadircet, klimek

Differential Revision: https://reviews.llvm.org/D73811
@kadircet kadircet mentioned this issue Jun 10, 2020
Closed
sam-mccall pushed a commit to llvm/llvm-project that referenced this issue Jun 10, 2020
@kadircet @sam-mccall
[clangd] Preserve -nostdinc and --sysroot when calling query driver
b6efa23 
Solves this issue: clangd/clangd#157

This is my first contribution to an llvm project, so I hope I'm doing it right!

Patch by @topisani (Tobias Pisani)!

Reviewers: kadircet, klimek

Differential Revision: https://reviews.llvm.org/D73811

(cherry picked from commit 6e8d6bc)
@wrightleft
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wrightleft commented Dec 2, 2020 •
edited

@topisani, did you get your problem resolved? I'm using Yocto and cannot get clangd to find the system headers too.

Sorry. I didn't notice that the patch was from you. I guess you solved your problem. I still wonder why my problem persists. Hmm.

ajohnson-uoregon pushed a commit to ajohnson-uoregon/clang-rewrite-only that referenced this issue Jul 17, 2022
@kadircet @sam-mccall
[clangd] Preserve -nostdinc and --sysroot when calling query driver
100f336 
Solves this issue: clangd/clangd#157

This is my first contribution to an llvm project, so I hope I'm doing it right!

Patch by @topisani (Tobias Pisani)!

Reviewers: kadircet, klimek

Differential Revision: https://reviews.llvm.org/D73811

(cherry picked from commit bc48e5f)
@kalj
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kalj commented Sep 21, 2022

I seem to be experiencing this exact issue with clangd built from git. Should I file a new issue or do we track it here?

I have this source file:

#include <iostream>

int main(int argc, char **argv) {
  std::cout << "hello\n";
  return 0;
}

and this compile_commands.json:

[
{
  "directory": "/home/kalle/dev/lsp-clangd-debugging/build-poky",
  "command": "/home/kalle/misc/poky-install-x86_64/sysroots/x86_64-pokysdk-linux/usr/bin/x86_64-poky-linux/x86_64-poky-linux-g++ --sysroot=/home/kalle/misc/poky-install-x86_64/sysroots/core2-64-poky-linux -o CMakeFiles/hello.dir/hello.cpp.o -c /home/kalle/dev/lsp-clangd-debugging/hello.cpp",
  "file": "/home/kalle/dev/lsp-clangd-debugging/hello.cpp"
}
]

Then, running clangd --check hello.cpp, I get this output:

I[22:02:34.060] clangd version 16.0.0 (git@github.com:llvm/llvm-project.git c0bc461999fdac918dd26867947c24eb6235c8d0)
I[22:02:34.060] Features: linux+debug
I[22:02:34.060] PID: 361828
I[22:02:34.060] Working directory: /home/kalle/dev/lsp-clangd-debugging
I[22:02:34.060] argv[0]: /usr/local/llvm/bin/clangd
I[22:02:34.060] argv[1]: --check=hello.cpp
I[22:02:34.061] Entering check mode (no LSP server)
I[22:02:34.061] Testing on source file /home/kalle/dev/lsp-clangd-debugging/hello.cpp
I[22:02:34.061] Loading compilation database...
I[22:02:34.062] Loaded compilation database from /home/kalle/dev/lsp-clangd-debugging/compile_commands.json
I[22:02:34.063] Compile command from CDB is: /home/kalle/misc/poky-install-x86_64/sysroots/x86_64-pokysdk-linux/usr/bin/x86_64-poky-linux/x86_64-poky-linux-g++ --target=x86_64-poky-linux --driver-mode=g++ --sysroot=/home/kalle/misc/poky-install-x86_64/sysroots/core2-64-poky-linux -o CMakeFiles/hello.dir/hello.cpp.o -c -resource-dir=/usr/local/llvm/lib/clang/16.0.0 -- /home/kalle/dev/lsp-clangd-debugging/hello.cpp
I[22:02:34.064] Parsing command...
I[22:02:34.066] internal (cc1) args are: -cc1 -triple x86_64-poky-linux -fsyntax-only -disable-free -clear-ast-before-backend -main-file-name hello.cpp -mrelocation-model pic -pic-level 2 -pic-is-pie -mframe-pointer=all -fmath-errno -ffp-contract=on -fno-rounding-math -mconstructor-aliases -funwind-tables=2 -target-cpu x86-64 -tune-cpu generic -mllvm -treat-scalable-fixed-error-as-warning -debugger-tuning=gdb -fcoverage-compilation-dir=/home/kalle/dev/lsp-clangd-debugging/build-poky -resource-dir /usr/local/llvm/lib/clang/16.0.0 -isysroot /home/kalle/misc/poky-install-x86_64/sysroots/core2-64-poky-linux -internal-isystem /usr/local/llvm/lib/clang/16.0.0/include -internal-isystem /home/kalle/misc/poky-install-x86_64/sysroots/core2-64-poky-linux/usr/local/include -internal-externc-isystem /home/kalle/misc/poky-install-x86_64/sysroots/core2-64-poky-linux/include -internal-externc-isystem /home/kalle/misc/poky-install-x86_64/sysroots/core2-64-poky-linux/usr/include -fdeprecated-macro -fdebug-compilation-dir=/home/kalle/dev/lsp-clangd-debugging/build-poky -ferror-limit 19 -fgnuc-version=4.2.1 -fcxx-exceptions -fexceptions -no-round-trip-args -faddrsig -D__GCC_HAVE_DWARF2_CFI_ASM=1 -x c++ /home/kalle/dev/lsp-clangd-debugging/hello.cpp
I[22:02:34.066] Building preamble...
I[22:02:34.095] Indexing headers...
I[22:02:34.096] Built preamble of size 214292 for file /home/kalle/dev/lsp-clangd-debugging/hello.cpp version null in 0.03 seconds
E[22:02:34.097] [pp_file_not_found] Line 2: 'iostream' file not found
I[22:02:34.097] Building AST...
E[22:02:34.111] [undeclared_var_use] Line 7: use of undeclared identifier 'std'
I[22:02:34.111] Indexing AST...
I[22:02:34.111] Building inlay hints
I[22:02:34.112] Testing features at each token (may be slow in large files)
I[22:02:34.129] All checks completed, 2 errors

E.g. it does not find <iostream>.
Looking at the cc1 args, it is clear that the c++ include directories are missing, as if it had missed taking the sysroot into account.

Running /home/kalle/misc/poky-install-x86_64/sysroots/x86_64-pokysdk-linux/usr/bin/x86_64-poky-linux/x86_64-poky-linux-g++ -E -x c++ - -v < /dev/null gives:

...
ignoring nonexistent directory "/not/exist/usr/include/c++/11.2.0"
ignoring nonexistent directory "/not/exist/usr/include/c++/11.2.0/x86_64-poky-linux"
ignoring nonexistent directory "/not/exist/usr/include/c++/11.2.0/backward"
ignoring nonexistent directory "/not/exist/usr/lib/x86_64-poky-linux/11.2.0/include"
ignoring nonexistent directory "/not/exist/usr/local/include"
ignoring nonexistent directory "/home/kalle/misc/poky-install-x86_64/sysroots/x86_64-pokysdk-linux/usr/lib/x86_64-poky-linux/gcc/x86_64-poky-linux/11.2.0/../../../../../x86_64-poky-linux/include"
ignoring nonexistent directory "/not/exist/usr/include/"
#include "..." search starts here:
#include <...> search starts here:
 /home/kalle/misc/poky-install-x86_64/sysroots/x86_64-pokysdk-linux/usr/lib/x86_64-poky-linux/gcc/x86_64-poky-linux/11.2.0/include
 /home/kalle/misc/poky-install-x86_64/sysroots/x86_64-pokysdk-linux/usr/lib/x86_64-poky-linux/gcc/x86_64-poky-linux/11.2.0/include-fixed
End of search list.
...

By contrast, including the --sysroot arg -- /home/kalle/misc/poky-install-x86_64/sysroots/x86_64-pokysdk-linux/usr/bin/x86_64-poky-linux/x86_64-poky-linux-g++ --sysroot=/home/kalle/misc/poky-install-x86_64/sysroots/core2-64-poky-linux -E -x c++ - -v < /dev/null -- I instead get:

...
ignoring nonexistent directory "/home/kalle/misc/poky-install-x86_64/sysroots/core2-64-poky-linux/usr/lib/x86_64-poky-linux/11.2.0/include"
ignoring nonexistent directory "/home/kalle/misc/poky-install-x86_64/sysroots/core2-64-poky-linux/usr/local/include"
ignoring nonexistent directory "/home/kalle/misc/poky-install-x86_64/sysroots/x86_64-pokysdk-linux/usr/lib/x86_64-poky-linux/gcc/x86_64-poky-linux/11.2.0/../../../../../x86_64-poky-linux/include"
#include "..." search starts here:
#include <...> search starts here:
 /home/kalle/misc/poky-install-x86_64/sysroots/core2-64-poky-linux/usr/include/c++/11.2.0
 /home/kalle/misc/poky-install-x86_64/sysroots/core2-64-poky-linux/usr/include/c++/11.2.0/x86_64-poky-linux
 /home/kalle/misc/poky-install-x86_64/sysroots/core2-64-poky-linux/usr/include/c++/11.2.0/backward
 /home/kalle/misc/poky-install-x86_64/sysroots/x86_64-pokysdk-linux/usr/lib/x86_64-poky-linux/gcc/x86_64-poky-linux/11.2.0/include
 /home/kalle/misc/poky-install-x86_64/sysroots/x86_64-pokysdk-linux/usr/lib/x86_64-poky-linux/gcc/x86_64-poky-linux/11.2.0/include-fixed
 /home/kalle/misc/poky-install-x86_64/sysroots/core2-64-poky-linux/usr/include/
End of search list.

...

@HighCommander4
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@kalj could you file a new issue please to make sure it doesn't get lost, since this one is closed? (You can always link to this one if they seem related.)

@kalj kalj mentioned this issue Sep 22, 2022
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@kalj
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kalj commented Sep 22, 2022

@HighCommander4 Thanks, done now!

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@kalj @kadircet @HighCommander4 @topisani @wrightleft @sheeaza