我怎么能明白我的标准库，并在我的电脑上编译什么标准GCC？ [英] How can I understand what standard my libraries are and to what standard gcc compiles in my computer?

问题描述

这是从我的终端：

  Korays酒店-的MacBook-Pro的：〜koraytugay $ GCC --version
配置有： -  preFIX = /库/开发商/ CommandLineTools的/ usr --with-GXX-包括-DIR = / usr / include目录/ C ++ / 4.2.1
（基于LLVM 3.6.0svn）苹果LLVM版本6.1.0（铛-602.0.49）
目标：x86_64的 - 苹果darwin14.3.0
线程模型：POSIX
 

有3 C类标准，据我所知，ANSI C，C99和C11。

我怎么能知道我有一个图书馆，什么我编译器支持？

解决方案

您必须找到你的编译器和/或操作系统的文档，它并不总是明确记载。

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苹果LLVM版本6.1.0（基于LLVM 3.6.0svn）（铛-602.0.49）

这对应于X code 6.3。

<一个href=\"https://developer.apple.com/library/mac/releasenotes/DeveloperTools/RN-X$c$c/Chapters/Introduction.html\" rel=\"nofollow\">https://developer.apple.com/library/mac/releasenotes/DeveloperTools/RN-X$c$c/Chapters/Introduction.html

在LLVM 3.5版本还东西应该是在这个版本的编译器：编译器'基于LLVM的3.6 SVN分支，它的存在之前LLVM.org的3.6版本（有点混乱，我知道）<。 / p>

http://clang.llvm.org/cxx_status.html

他们没有对C版本支持类似的得心应手页面，但是。

<一个href=\"http://llvm.org/releases/3.5.0/tools/clang/docs/UsersManual.html#differences-between-various-standard-modes\" rel=\"nofollow\">http://llvm.org/releases/3.5.0/tools/clang/docs/UsersManual.html#differences-between-various-standard-modes

在事实上，它看起来像我的文档甚至没有准确地反映铛3.5的C11支持。

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所以基本上，如果文档不明确掩盖它，你就必须熟悉编译器。

X $ C $ 6.3Ç支持C89 / C90，C94，C99，C11和C语言的特点。我相信OS X提供全部库支持高达C99。 OS X不包括C11标准库的实施方案，但是一些C11头可能由编译器提供。 ＆LT; threads.h方式＆gt; 是没有，不过

This is from my terminal:

Korays-MacBook-Pro:~ koraytugay$ gcc --version
Configured with: --prefix=/Library/Developer/CommandLineTools/usr --with-gxx-include-dir=/usr/include/c++/4.2.1
Apple LLVM version 6.1.0 (clang-602.0.49) (based on LLVM 3.6.0svn)
Target: x86_64-apple-darwin14.3.0
Thread model: posix

There are 3 C standards as far as I know, ANSI C, C99 and C11.

How can I know which library I have and what my compiler supports?

解决方案

You have to find the documentation for your compiler and/or operating system and it's not always clearly documented.

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Apple LLVM version 6.1.0 (clang-602.0.49) (based on LLVM 3.6.0svn)

This corresponds to Xcode 6.3.

https://developer.apple.com/library/mac/releasenotes/DeveloperTools/RN-Xcode/Chapters/Introduction.html

Also anything in the LLVM 3.5 release should be in this version of the compiler: the compiler is 'based on the llvm 3.6 svn branch, which exists prior to LLVM.org's 3.6 release (a bit confusing, I know).

http://clang.llvm.org/cxx_status.html

They don't have a similar handy page for C version support, however.

http://llvm.org/releases/3.5.0/tools/clang/docs/UsersManual.html#differences-between-various-standard-modes

In fact it looks to me like the documentation doesn't even accurately reflect clang 3.5's C11 support.

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So basically, if the documentation doesn't clearly cover it, you just have to be familiar with the compiler.

Xcode 6.3 supports C language features for C89/C90, C94, C99, and C11. I believe OS X offers full library support up to C99. OS X does not include an implementation of the C11 standard library, however some C11 headers may be provided by the compiler. <threads.h> isn't, however.

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