[cfe-dev] Some error in clangd

Ilya Biryukov via cfe-dev cfe-dev at lists.llvm.org
Mon Apr 1 02:24:13 PDT 2019


I don't think there's any simple solution to this. You could try patching
your 'compile_commands.json' to add the header files in there, but CMake
won't do this automatically for you.
I believe the following project on GitHub tries to do something similar,
but I haven't tried it myself: https://github.com/Sarcasm/compdb


+Sam McCall <sammccall at google.com>, now that you're back from leave, any
ideas for improving the heuristics to find proper matching .cpp files in
more cases?

On Mon, Apr 1, 2019 at 11:11 AM yus <suyu.nu at gmail.com> wrote:

> Excuse me, is there any solution for my problem?
> Thanks
>
> yus <suyu.nu at gmail.com> 于2019年3月23日周六 上午9:40写道:
>
>> HI,
>>
>> Got it.
>> So my problem has no relationship with front-end vim-YoucompleteMe
>> I just need to wait for your solution or workaround.
>>
>> Thanks for your help.
>>
>> Brs,
>> Su Yu
>>
>> Ilya Biryukov <ibiryukov at google.com> 于2019年3月22日周五 下午8:43写道:
>>
>>> On Fri, Mar 22, 2019 at 12:41 PM yus <suyu.nu at gmail.com> wrote:
>>>
>>>> Hi,
>>>>
>>>> By the way,
>>>> If a header has no source file (*.cpp), how it been handled.
>>>>
>>> In that case we would fallback to something like `clang -xc++ test.hpp`.
>>> But that almost never happens, our heuristics will always try to pick
>>> some cpp file first.
>>> E.g. in the extreme case when compile_commands.json has just a single
>>> file, we will take the compile command from that file for *all* headers
>>> we encounter.
>>>
>>>
>>>>
>>>> Brs,
>>>> Su Yu
>>>>
>>>> yus <suyu.nu at gmail.com> 于2019年3月22日周五 下午7:37写道:
>>>>
>>>>> Hi,
>>>>>
>>>>> Many thanks for your prompt answer.
>>>>> It's an open source project.
>>>>> But it's a little difficult to build. It has many dependency
>>>>> Hope it can help.
>>>>> https://github.com/EOSIO/eos
>>>>>
>>>>> Thanks.
>>>>>
>>>>> Brs,
>>>>> Su Yu
>>>>>
>>>>>
>>>>>
>>>>> Ilya Biryukov <ibiryukov at google.com> 于2019年3月22日周五 下午5:18写道:
>>>>>
>>>>>> Hi Su,
>>>>>>
>>>>>> Since compile_commands.json only contains compile commands for .cpp
>>>>>> files, we use a heuristics-based approach to infer compile commands for
>>>>>> headers.
>>>>>> More precisely, based on the path to the header file we try to guess
>>>>>> the best .cpp file for a header (e.g. an implementation file) and pick the
>>>>>> compile command from it.
>>>>>>
>>>>>> In your case, we fail to guess a good compile command. I don't know
>>>>>> of a good workaround, unfortunately.
>>>>>> +Sam McCall <sammccall at google.com> is the author of this approach,
>>>>>> he might have ideas on how to fix this.
>>>>>>
>>>>>> Is the project you're working on open-source? If so, could you
>>>>>> provide a link to the source code? If not, compilation database should also
>>>>>> be enough to reproduce.
>>>>>>
>>>>>>
>>>>>> On Thu, Mar 21, 2019 at 10:41 PM yus via cfe-dev <
>>>>>> cfe-dev at lists.llvm.org> wrote:
>>>>>>
>>>>>>> Hi,
>>>>>>> I encounter an error in clangd
>>>>>>>
>>>>>>> I[12:49:12.197] Updating file
>>>>>>> /root/workspace/eos4/libraries/chain/include/eosio/chain/types.hpp with
>>>>>>> command* [/root/workspace/eos4/build/libraries/wasm-jit/Source/IR] */usr/bin/clang++-4.0
>>>>>>> -D ENABLE_SIMD_PROTOTYPE=0 -D ENABLE_THREADING_PROTOTYPE=0 -D
>>>>>>> IR_API=DLL_EXPORT -D PRETEND_32BIT_ADDRESS_SPACE=0 -D WAVM_METRICS_OUTPUT=0
>>>>>>> -I /root/workspace/eos4/libraries/wasm-jit/Include -I
>>>>>>> /root/workspace/eos4/libraries/wasm-jit/Include/IR -Wall
>>>>>>> -Wno-invalid-partial-specialization -O3 -D NDEBUG -c -std=gnu++14
>>>>>>> /root/workspace/eos4/libraries/chain/include/eosio/chain/types.hpp
>>>>>>> -resource-dir=/root/.vim/bundle/YouCompleteMe/third_party/ycmd/third_party/clang/lib/clang/7.0.0
>>>>>>> V[12:49:12.199] Preamble for file
>>>>>>> /root/workspace/eos4/libraries/chain/include/eosio/chain/types.hpp cannot
>>>>>>> be reused. Attempting to rebuild it.
>>>>>>> V[12:49:12.238] Built preamble of size 213512 for file
>>>>>>> /root/workspace/eos4/libraries/chain/include/eosio/chain/types.hpp
>>>>>>> I[12:49:12.242] Dropped diagnostic outside main file: : too many
>>>>>>> errors emitted, stopping now
>>>>>>>
>>>>>>> some other file in same folder update correctly
>>>>>>>
>>>>>>> I[12:49:03.898] Updating file
>>>>>>> /root/workspace/eos4/libraries/chain/include/eosio/chain/resource_limits.hpp
>>>>>>> with command *[/root/workspace/eos4/build/libraries/chain] */usr/bin/clang++-4.0
>>>>>>> -I /root/workspace/eos4/libraries/chain/include -I
>>>>>>> /root/workspace/eos4/build/libraries/chain/include -I
>>>>>>> /root/workspace/eos4/libraries/chain/../wasm-jit/Include -I
>>>>>>> /root/workspace/eos4/libraries/chain/../../externals/binaryen/src -I
>>>>>>> /root/workspace/eos4/libraries/utilities/include -I
>>>>>>> /root/workspace/eos4/libraries/utilities/../wasm-jit/Include -I
>>>>>>> /root/workspace/eos4/libraries/fc/include -I /root/opt/boost/include -I
>>>>>>> /usr/local/include -I /root/workspace/eos4/libraries/fc/vendor/websocketpp
>>>>>>> -I /root/workspace/eos4/libraries/chainbase/include -I
>>>>>>> /root/workspace/eos4/libraries/wasm-jit/Source/Runtime/../../../chain/include
>>>>>>> -I /root/workspace/eos4/libraries/softfloat/source/include -I
>>>>>>> /root/workspace/eos4/libraries/softfloat/source/8086-SSE -I
>>>>>>> /root/workspace/eos4/libraries/softfloat/build/Linux-x86_64-GCC -I
>>>>>>> /root/workspace/eos4/libraries/builtins -I
>>>>>>> /root/workspace/eos4/libraries/builtins../softfloat/source/include -Wall
>>>>>>> -Wno-invalid-partial-specialization -O3 -D NDEBUG -c -std=gnu++14
>>>>>>> /root/workspace/eos4/libraries/chain/include/eosio/chain/resource_limits.hpp
>>>>>>> -resource-dir=/root/.vim/bundle/YouCompleteMe/third_party/ycmd/third_party/clang/lib/clang/7.0.0
>>>>>>> V[12:49:03.901] Preamble for file
>>>>>>> /root/workspace/eos4/libraries/chain/include/eosio/chain/resource_limits.hpp
>>>>>>> cannot be reused. Attempting to rebuild it.
>>>>>>> V[12:49:10.676] <<<
>>>>>>> {"id":"3","jsonrpc":"2.0","method":"textDocument/definition","params":{"position":{"character":51,"line":53},"textDocument":{"uri":"file:///root/workspace/eos4/libraries/chain/include/eosio/chain/resource_limits.hpp"}}}
>>>>>>>
>>>>>>> I don't know why, and what's the difference. why the flags are
>>>>>>> different.
>>>>>>> How to fix the problem
>>>>>>>
>>>>>>> root at 39470746ee31:~/workspace/eos4# /usr/bin/clang++-4.0 -D
>>>>>>> ENABLE_SIMD_PROTOTYPE=0 -D ENABLE_THREADING_PROTOTYPE=0 -D
>>>>>>> IR_API=DLL_EXPORT -D PRETEND_32BIT_ADDRESS_SPACE=0 -D WAVM_METRICS_OUTPUT=0
>>>>>>> -I /root/workspace/eos4/libraries/wasm-jit/Include -I
>>>>>>> /root/workspace/eos4/libraries/wasm-jit/Include/IR -Wall
>>>>>>> -Wno-invalid-partial-specialization -O3 -D NDEBUG -c -std=gnu++14
>>>>>>> /root/workspace/eos4/libraries/chain/include/eosio/chain/types.hpp
>>>>>>> -resource-dir=/root/.vim/bundle/YouCompleteMe/third_party/ycmd/third_party/clang/lib/clang/7.0.0
>>>>>>> /root/workspace/eos4/libraries/chain/include/eosio/chain/types.hpp:6:10:
>>>>>>> fatal error: 'eosio/chain/name.hpp' file not found
>>>>>>> #include <eosio/chain/name.hpp>
>>>>>>>          ^~~~~~~~~~~~~~~~~~~~~~
>>>>>>> 1 error generated.
>>>>>>>
>>>>>>> attach the error and compilation database
>>>>>>>
>>>>>>> Thanks.
>>>>>>>
>>>>>>> Brs
>>>>>>> Su Yu
>>>>>>>
>>>>>>> _______________________________________________
>>>>>>> cfe-dev mailing list
>>>>>>> cfe-dev at lists.llvm.org
>>>>>>> https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-dev
>>>>>>>
>>>>>>
>>>>>>
>>>>>> --
>>>>>> Regards,
>>>>>> Ilya Biryukov
>>>>>>
>>>>>
>>>
>>> --
>>> Regards,
>>> Ilya Biryukov
>>>
>>

-- 
Regards,
Ilya Biryukov
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