我的YouCompleteMe Vim插件不支持STL。

Question

我刚按照Github上的介绍编译并安装了Vim、Vundle和YouCompleteMe插件。但是在我的Vim中，YouCompleteMe插件不能很好地工作。它可以自动补全变量名，但无法自动补全STL对象（vector、map）的操作。甚至不能自动补全类中的"this->"。它总是告诉我"(^U^N^P) Pattern not found."。你们见过这种情况吗？我使用的是Ubuntu 12.04。我该怎么办？

- Jintao Guan

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你能确认你已经安装了所有的依赖项吗？你具体遵循了哪些步骤？你是按照“超快速”还是“完整”教程进行的操作？为什么你要在这个通用性很强的网站上提问，而不是在 YCM 的问题跟踪器上提问？ - romainl

我也遇到了一些问题，无法让YCM正常工作。我进行了快速安装，但现在尝试深入了解为什么它不起作用，却有点迷失在如何排除YCM故障的过程中。有很多部分我不理解。@romaini，你能给出一些排除故障的建议吗？ - Tegra Detra

@romainl 我走了一条漫长的编译之路，仍然遇到了麻烦，然后查看了ycm配置文件，意识到那就是我遇到的问题。我不知道我的标准库在哪里 =。 - Tegra Detra

Answer 1

插件的GitHub存储库上的自述文件现在解决了该问题。

这是由libclang引起的问题。从clang编译二进制文件使用了正确的默认头文件搜索路径，但从libclang.so编译时没有使用。该问题似乎对某些操作系统影响更大。特别是OS X Mavericks似乎有问题。

当前的解决方法是调用echo | clang -v -E -x c++ -，并查看在# include <...>搜索开始于：标题下的路径。您应该采取这些路径，并为每个单独路径添加-isystem前缀，然后将它们全部附加到您在.ycm_extra_conf.py文件中返回的标志列表中的FlagsForFile函数中。

您还可以查看相应的问题

- gkb0986

Answer 2

我也在这里寻找答案，我不懂Python，以前也没有黑过其他的东西。那么这就是我解决问题的方法。

1. Find the error message. I went to ~/.vim/bundle/YouCompleteMe and grepped for "builtin includes" . Why? because that is part of the error message

   • a. I did not find it there so went to a higher level (cd ..) and repeat.
   • b. Found it see below ./vundle/plugin/libclang.py: print "WARNING: NxD libclang can not find the builtin includes."

2. Modified Error message to ensure that this file was being run (my initials NxD) - worked.

3. The message is printed by initClangComplete
4. The message is printed after this invocation builtinHeaderPath = getBuiltinHeaderPath(library_path) hence we delve deeper into builtinHeaderPath

5. getBuiltinHeaderPath runs a loop on known directories. I have 2 clang installations

   • a. ~/Downloads directory - where all software in the world is dumped
   • b. /usr/local because I wanted the latest clang which I cloned, compiled and built

   I added both the paths to this array : knownPaths

     "/usr/local/include",
     "/usr/local/lib/clang/3.3",
     "/home/nxd/Downloads/clang+llvm-3.2-x86_64-linux-ubuntu-12.04/clang/3.2"
   

   I noted that "," is the separator of array elements in python. I also earlier noted that print -> puts a message out in python and arguments are c-style %s, %d etc work - (that's how the "builtin include" message came on the screen in the first place)

6. I also dumped some print statements into the loop so see what it was seeing and what it was doing.

   part code modified function "getBuiltinHeaderPath"

     print "active path from knownPaths is |%s|" %path
     files = os.listdir(path)
     print " files in path is |%s|" % files
     print " len (files) is |%d|" % len(files)
     if len(files) >= 1:
       files = sorted(files)
       subDir = files[-1]
     else:
       subDir = '.'
     # nxd -
     subDir = '.'
     path = path + "/" + subDir + "/include/"
     print " len (files) is |%d|" % len(files)
     print " files[-1] is |%s|" % files[-1]
     print "searching in path : |%s| " % path
   

7. I realised that the expected behaviour of files[-1] was not what the author intended and modified it after the if condition to stay unchanged.

8. Restart vim with a new cpp file and looked at :messages - It worked.

   Hope that helps.

- Neil