Xcode C++ 头文件目录
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Xcode C++ Header Files Directory
提问by perhapsmaybeharry
I've been trawling the internet to no avail while trying to find an answer to where Xcode stores its C++ header (.h) files like "stdio.h" etc. I'm looking for the directory just out of curiousity.
我一直在互联网上搜索无果，试图找到 Xcode 存储其 C++ 标头 (.h) 文件（如“stdio.h”等）的位置的答案。我只是出于好奇在寻找该目录。
Thanks in advance! Harry
提前致谢！哈利
回答by WhozCraig
Standard library headers are spread across two primary locations, one of them highly dependent on the SDK choice you have for your project.
标准库头文件分布在两个主要位置，其中之一高度依赖于您为项目选择的 SDK。
For the regular C standard headers, you'll find them in the following location, assuming a regular install of Xcode:
对于常规的 C 标准头文件，您将在以下位置找到它们，假设 Xcode 的常规安装：
/Applications
/Xcode.app
/Contents
/Developer
/Platforms
/*ChosenTargetPlatform*
/Developer
/SDKs
/*ChosenMacOSSDK*
/usr
/include
where ChosenTargetPlatformis one of :
其中ChosenTargetPlatform之一是：
iPhoneOS.platform
iPhoneSimulator.platform
MacOSX.platform
and the ChosenMasOSSDKis from whichever SDKs you have installed on your build rig and have chosen as the target OS. For example:
并且ChosenMasOSSDK来自您在构建装备上安装并选择作为目标操作系统的任何 SDK。例如：
MacOS10.9.sdkis for MavericksMacOS10.10.sdkis for Yosemite
MacOS10.9.sdk是给小牛队的MacOS10.10.sdk是为优胜美地
etc...
等等...
The C++ standard library headers are a little different. They're stored independent of the MacOS SDK and target platform. The default location, again assuming you have a stock, run of the mill install:
C++ 标准库头文件有点不同。它们的存储独立于 MacOS SDK 和目标平台。再次假设您有库存，运行工厂安装的默认位置：
/Applications
/Xcode.app
/Contents
/Developer
/Toolchains
/XcodeDefault.xctoolchain
/usr
/include
/c++
/v1
The reason behind this (as near as I can see) is the C++ standard library is coupled together withthe formal toolchain itself. I.e. clang, c99, c11, etc, are all part of the formal toolchain including the headers andany required libs, executables, etc.
这背后的原因（据我所知）是 C++ 标准库与正式工具链本身耦合在一起。例如，clang、c99、c11 等都是正式工具链的一部分，包括头文件和任何所需的库、可执行文件等。
Most of this you can explore for yourself by doing the follow:
您可以通过执行以下操作自行探索其中的大部分内容：
- In a source file hover over the filename portion of a
#include<filename> - Cmd-click the filename, it should open.
- From the File menu, select "Show in Finder"
- 在源文件中，将鼠标悬停在
#include<filename> - Cmd-单击文件名，它应该打开。
- 从文件菜单中，选择“在 Finder 中显示”
That should open a Finder windows and allow you to explore the file's location. If you include the Pathbutton as one of the toolbar options in your Finder configuration it will reveal the full path of where you are.
这应该会打开一个 Finder 窗口并允许您浏览文件的位置。如果您将该Path按钮作为 Finder 配置中的工具栏选项之一，它将显示您所在位置的完整路径。
Best of luck.
祝你好运。
回答by Sergio
For xCode 6 you can find that file here: /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS.sdk/usr/include/stdio.h
对于 xCode 6，您可以在此处找到该文件：/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS.sdk/usr/include/stdio.h
