如何找到Mac上安装的所有Clang版本？ [英] How can I find all Clang versions installed on my Mac?

问题描述

clang --version
Apple LLVM version 10.0.0 (clang-1000.10.44.4)
Target: x86_64-apple-darwin17.7.0
Thread model: posix
InstalledDir: /Library/Developer/CommandLineTools/usr/bin

which clang
/usr/bin/clang

我在Mac上的10.13.6版，任何说明都将不胜感激！

I'm on Mac, 10.13.6, any instructions would be appreciated!

推荐答案

您可以使用 which -a clang 列出所有 clang 在您的路径上。不在您的 PATH 上的内容（例如，如果您在不寻常的地方安装了Clang）将不会显示。

You can use which -a clang to list all of the clangs on your PATH. Ones which aren't on your PATH, like if you've installed Clang somewhere out of the ordinary, won't be shown.

一个复杂的问题是 / usr / bin / clang 实际上是一个蹦床，会启动 clang 在当前活动的开发人员目录中，由 xcode-select 或 DEVELOPER_DIR 环境变量选择。因此，知道 / usr / bin / clang 在那儿并不会告诉您它将反弹到哪个版本或可以激活哪个其他版本。 xcrun -f clang 会告诉第一个（将被反弹到）。据我所知，没有办法让Apple的工具列出可能的开发人员目录。因此，如果您安装了多个版本的Xcode（或命令行工具），则其中-a clang 将看不到它们。

A complication is that /usr/bin/clang is actually a trampoline that launches the clang within the currently active developer dir, selected by xcode-select or the DEVELOPER_DIR environment variable. So, knowing that /usr/bin/clang is there doesn't tell you either which one it will bounce to or which other versions could be activated. xcrun -f clang will tell the first (which will be bounced to). To my knowledge, there's no way to get Apple's tools to list out the possible developer dirs. So, if you have multiple versions of Xcode (or the Command Line Tools) installed, which -a clang won't see them.

一种更可靠的方法是搜索文件系统。您可以使用 find / -type f -perm + a + x -name clang ，但这会很慢。您可以尝试的另一件事是Spotlight，但我发现Xcode应用程序捆绑包的内部没有建立索引。

A more reliable way would be to search the file system. You could use find / -type f -perm +a+x -name clang, but that will be slow. The other thing you can try is Spotlight, but I find that the internals of Xcode app bundles are not indexed.

这篇关于如何找到Mac上安装的所有Clang版本？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！