如何解决YouCompleteMe对于C标头无法正常工作
我正在编写一个用于学习系统调用的小型c程序，发现在我的vim中，YouCompleteMe无法为C标头中的sigaction之类的函数提供正确的完成。这是我包含的代码头。
#include <sys/types.h>
#include <unistd.h>
#include <stdio.h>
#include <stdbool.h>
#include <stdlib.h>
#include <signal.h>
当我键入siga时，完成面板如下所示：
它没有为sigaction函数提供正确的完成功能，我想我的.ycm_extra_conf.py文件中的标志设置有问题。这是我的C程序的.ycm_extra_conf.py文件：
import os
import ycm_core
flags = [
'-Wall','-Wextra','-Werror','-Wc++98-compat','-Wno-long-long','-Wno-variadic-macros','-fexceptions','-DNDEBUG',# THIS IS IMPORTANT! Without a "-std=<something>" flag,clang won't know which
# language to use when compiling headers. So it will guess. Badly. So C++
# headers will be compiled as C headers. You don't want that so ALWAYS specify
# a "-std=<something>".
# For a C project,you would set this to something like 'c99' instead of
# 'c++11'.
'-std=c99',# ...and the same thing goes for the magic -x option which specifies the
# language that the files to be compiled are written in. This is mostly
# relevant for c++ headers.
# For a C project,you would set this to 'c' instead of 'c++'.
'-x','c','-isystem','/usr/local/include','/usr/include/x86_64-linux-gnu','/usr/include'
]
这是YcmDebugInfo：
Printing YouCompleteMe debug information...
-- Resolve completions: Never
-- Client logfile: /tmp/ycm_3yj6gesj.log
-- Server Python interpreter: /usr/bin/python3
-- Server Python version: 3.8.2
-- Server has Clang support compiled in: False
-- Clang version: None
-- Extra configuration file found and loaded
-- Extra configuration path: /home/zxy/understanding-unix-linux-programming/ch7/.ycm_extra_conf.py
-- C-family completer debug information:
-- Clangd running
-- Clangd process ID: 177623
-- Clangd executable: ['/home/zxy/.vim/plugged/YouCompleteMe/third_party/ycmd/third_party/clangd/output/bin/clangd','-header-insertion-decorators=0','-resource-dir=/home/zxy/.vim/plugged/YouCompleteMe/third_
party/ycmd/third_party/clang/lib/clang/10.0.0','-limit-results=500']
-- Clangd logfiles:
-- /tmp/clangd_stderrtwgnq048.log
-- Clangd Server State: Initialized
-- Clangd Project Directory: /home/zxy/understanding-unix-linux-programming/ch7
-- Clangd Settings: {}
-- Clangd Compilation Command: ['clang-tool','-Wall','-std=c99','-x','-
isystem','/usr/include','/home/zxy/understanding-unix-linux-programming/ch7/sigactdemo.c']
-- Server running at: http://127.0.0.1:55187
-- Server process ID: 177581
-- Server logfiles:
-- /tmp/ycmd_55187_stdout_235pm2ty.log
-- /tmp/ycmd_55187_stderr_pd5sgbpp.log
这是来自YcmToggleLogs文件之一：
I[17:12:54.491] clangd version 10.0.0 (https://github.com/ycm-core/llvm 038587147cf2f97d1c3e677042f69560c65b5bea)
I[17:12:54.491] PID: 177542
I[17:12:54.491] Working directory: /home/zxy/understanding-unix-linux-programming/ch7
I[17:12:54.491] argv[0]: /home/zxy/.vim/plugged/YouCompleteMe/third_party/ycmd/third_party/clangd/output/bin/clangd
I[17:12:54.491] argv[1]: -header-insertion-decorators=0
I[17:12:54.491] argv[2]: -resource-dir=/home/zxy/.vim/plugged/YouCompleteMe/third_party/ycmd/third_party/clang/lib/clang/10.0.0
I[17:12:54.491] argv[3]: -limit-results=500
I[17:12:54.491] Starting LSP over stdin/stdout
I[17:12:54.497] <-- initialize(1)
I[17:12:54.497] --> reply:initialize(1) 0 ms
I[17:12:54.498] <-- initialized
I[17:12:54.498] unhandled notification initialized
I[17:12:54.498] <-- workspace/didChangeConfiguration
I[17:12:54.499] <-- workspace/didChangeConfiguration
I[17:12:54.499] Failed to find compilation database for /home/zxy/understanding-unix-linux-programming/ch7/sigactdemo.c
I[17:12:54.499] <-- textDocument/didOpen
I[17:12:54.500] Updating file /home/zxy/understanding-unix-linux-programming/ch7/sigactdemo.c with command
[/home/zxy/understanding-unix-linux-programming/ch7]
clang-tool -Wall -Wextra -Werror -fexceptions -DNDEBUG -std=c99 -x c -isystem /usr/local/include -isystem /usr/include/x86_64-linux-gnu -isystem /usr/include /home/zxy/understanding-unix-linux-programming/ch7/sigactdemo.c -fsyntax-only -resource-dir=/home/zxy/.vim/plugged/YouCompleteMe/third_party/ycmd/third_party/clang/lib/clang/10.0.0
I[17:12:54.501] Enqueueing 1 commands for indexing
E[17:12:54.501] Tried to create storage for empty directory!
I[17:12:54.559] --> textDocument/publishDiagnostics
I[17:12:54.592] Indexed /home/zxy/understanding-unix-linux-programming/ch7/sigactdemo.c (601 symbols,1916 refs,43 files)
I[17:12:54.592] Failed to compile /home/zxy/understanding-unix-linux-programming/ch7/sigactdemo.c,index may be incomplete
E[17:12:54.593] Failed to write background-index shard for file /usr/include/features.h: atomic_write_error: failed_to_create_uniq_file
E[17:12:54.594] Failed to write background-index shard for file /home/zxy/.vim/plugged/YouCompleteMe/third_party/ycmd/third_party/clang/lib/clang/10.0.0/include/stdbool.h: atomic_write_error: failed_to_create_uniq_file
E[17:12:54.594] Failed to write background-index shard for file /home/zxy/.vim/plugged/YouCompleteMe/third_party/ycmd/third_party/clang/lib/clang/10.0.0/include/stddef.h: atomic_write_error: failed_to_create_uniq_file
E[17:12:54.594] Failed to write background-index shard for file /usr/include/x86_64-linux-gnu/bits/types/clockid_t.h: atomic_write_error: failed_to_create_uniq_file
E[17:12:54.594] Failed to write background-index shard for file /usr/include/stdlib.h: atomic_write_error: failed_to_create_uniq_file
E[17:12:54.595] Failed to write background-index shard for file /usr/include/x86_64-linux-gnu/bits/types/__fpos64_t.h: atomic_write_error: failed_to_create_uniq_file
E[17:12:54.595] Failed to write background-index shard for file /usr/include/x86_64-linux-gnu/bits/types/timer_t.h: atomic_write_error: failed_to_create_uniq_file
E[17:12:54.595] Failed to write background-index shard for file /usr/include/stdc-predef.h: atomic_write_error: failed_to_create_uniq_file
E[17:12:54.595] Failed to write background-index shard for file /usr/include/x86_64-linux-gnu/gnu/stubs-64.h: atomic_write_error: failed_to_create_uniq_file
E[17:12:54.596] Failed to write background-index shard for file /usr/include/x86_64-linux-gnu/sys/types.h: atomic_write_error: failed_to_create_uniq_file
E[17:12:54.596] Failed to write background-index shard for file /usr/include/x86_64-linux-gnu/bits/sys_errlist.h: atomic_write_error: failed_to_create_uniq_file
E[17:12:54.596] Failed to write background-index shard for file /usr/include/x86_64-linux-gnu/bits/floatn.h: atomic_write_error: failed_to_create_uniq_file
E[17:12:54.596] Failed to write background-index shard for file /usr/include/unistd.h: atomic_write_error: failed_to_create_uniq_file E[17:12:54.597] Failed to write background-index shard for file /usr/include/x86_64-linux-gnu/bits/types/FILE.h: atomic_write_error: failed_to_create_uniq_file
E[17:12:54.597] Failed to write background-index shard for file /usr/include/x86_64-linux-gnu/bits/unistd_ext.h: atomic_write_error: failed_to_create_uniq_file
E[17:12:54.597] Failed to write background-index shard for file /usr/include/x86_64-linux-gnu/gnu/stubs.h: atomic_write_error: failed_to_create_uniq_file
E[17:12:54.597] Failed to write background-index shard for file /usr/include/x86_64-linux-gnu/bits/timesize.h: atomic_write_error: failed_to_create_uniq_file
E[17:12:54.598] Failed to write background-index shard for file /usr/include/x86_64-linux-gnu/bits/libc-header-start.h: atomic_write_error: failed_to_create_uniq_file
E[17:12:54.598] Failed to write background-index shard for file /usr/include/signal.h: atomic_write_error: failed_to_create_uniq_file
E[17:12:54.598] Failed to write background-index shard for file /usr/include/x86_64-linux-gnu/bits/types/__fpos_t.h: atomic_write_error: failed_to_create_uniq_file
E[17:12:54.598] Failed to write background-index shard for file /usr/include/x86_64-linux-gnu/bits/stdio_lim.h: atomic_write_error: failed_to_create_uniq_file E[17:12:54.599] Failed to write background-index shard for file /usr/include/x86_64-linux-gnu/bits/signal_ext.h: atomic_write_error: failed_to_create_uniq_file
E[17:12:54.599] Failed to write background-index shard for file /usr/include/stdio.h: atomic_write_error: failed_to_create_uniq_file E[17:12:54.599] Failed to write background-index shard for file /usr/include/x86_64-linux-gnu/bits/typesizes.h: atomic_write_error: failed_to_create_uniq_file
但是如果我为cpp配置.ycm_extra_conf.py文件，
import os
import ycm_core
flags = [
'-Wall',you would set this to something like 'c99' instead of
# 'c++11'.
'-std=c++11','c++','-isystem/usr/include/c++/9','-isystem/usr/include/x86_64-linux-gnu','-isystem/usr/local/include','-isystem/usr/include'
]
完成工作无需更改我的代码即可：
有人可以帮我吗？我整天都在搜索，仍然没有孤独感...
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