今天更新了下XCode之后安装的一些插件不能使用了，没了XVim完全不能适应。从https://github.com/XVimProject/XVim.git重新下载了个最新版本，进行编译提示失败。
看了下更新日志进行如下处理：
After setting up a new self-signed certificate, issued(创建XcodeSigner自签名证书)
sudo codesign -f -s XcodeSigner /Applications/Xcode.app (在终端中运行命令)
and then make (终端中进行编译或直接XCode build）
Undefined symbols for architecture x86_64:
"_OBJC_CLASS_$_IDEPlaygroundEditor", referenced from:
anon in IDEPlaygroundEditor+XVim.o
l_OBJC_$_CATEGORY_IDEPlaygroundEditor_$_XVim in IDEPlaygroundEditor+XVim.o
objc-class-ref in XVimHookManager.o
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
如果编译出失败出现上面的提示错误，解决方法如下：
Remove support for "IDEPlaygroundEditor".
Delete reference of "IDEPlaygroundEditor+XVim.h" and "IDEPlaygroundEditor+Xvim.m", then comment the reference code in "XVim/XVimHookManager.m".
删除"IDEPlaygroundEditor+XVim.h 和 IDEPlaygroundEditor+XVim.m 及相关文件的引用后再make就可以了
