Xcode 的搜索路径设置中的 $(inherited) 是什么？
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What is $(inherited) in Xcode's search path settings?
提问by Martin Berger
What is the $(inherited)search path setting?
什么是$(inherited)搜索路径设置？
I've modified the header and library search path settings regarding OpenSSL for iPad and this issue along with the recursive option for given path was the main culprit.
我已经修改了关于 iPad 的 OpenSSL 的头文件和库搜索路径设置，这个问题以及给定路径的递归选项是主要的罪魁祸首。
When I rearranged my search paths to first look into directories and then into $(inherited), the iPad builds were working.
当我重新排列搜索路径以首先查看目录然后查看 时$(inherited)，iPad 版本正在运行。
采纳答案by Thomas
I'm looking for a documentation, too. But I made the experience, that $(inherited)can be used to inherit build settings from the project level to the target level. When you define library or header search paths at the project level you can use $(inherited)in the target build settings to use these search paths in the search paths of the project targets.
我也在找文档。但是我做了经验，$(inherited)可以用来将构建设置从项目级别继承到目标级别。在项目级别定义库或标头搜索路径时，您可以$(inherited)在目标构建设置中使用这些搜索路径在项目目标的搜索路径中使用。
回答by onmyway133
If you go to Target Build Settings, and switch to Level view
如果您转到目标构建设置，然后切换到关卡视图
You can see the flow of inheritedfrom right to left
你可以看到inherited从右到左的流动
Resolved <- Target <- xcconfig <- Project <- iOS Default
So in inheritedin Target means that Target inherits settings from xcconfig and Project
所以 in inheritedTarget 意味着 Target 从 xcconfig 和 Project 继承设置
回答by lal
Example of Overridingbuild setting variables set on the Project or Target level by reassigning the value of that variable in a xcconfig file.
通过在 xcconfig 文件中重新分配该变量的值来覆盖在项目或目标级别上设置的构建设置变量的示例。
// Variable set in the project file, previous level
OTHER_LDFLAGS = -ObjC
// lib.xcconfig
OTHER_LDFLAGS = -framework Security
^ When compiling with this, the previous value of OTHER_LDFLAGS -ObjCis going to be overridden by the new value -framework Security.
^ 使用此编译时， OTHER_LDFLAGS 的先前值-ObjC将被新值覆盖-framework Security。
Example of Inheritingbuild setting variables set on the Project or Target level by appending to the previous value of that variable in a xcconfig file. Think of $(inherited)as a special variable that can be used to get the existing value of a variable so that assignment to same variable isn't destructive.
通过附加到 xcconfig 文件中该变量的先前值来继承在项目或目标级别上设置的构建设置变量的示例。将其$(inherited)视为可用于获取变量的现有值的特殊变量，以便对同一变量的赋值不会造成破坏性。
// Variable set in the project file, previous level
OTHER_LDFLAGS = -ObjC
// lib.xcconfig
OTHER_LDFLAGS = $(inherited) -framework Security
^ When compiling with this, the value of OTHER_LDFLAGS is going to be -ObjC -framework Security.
^ 使用此编译时， OTHER_LDFLAGS 的值将是-ObjC -framework Security.
Example found at https://pewpewthespells.com/blog/xcconfig_guide.html
在https://pewpewthespells.com/blog/xcconfig_guide.html 中找到的示例
回答by Emerald Weapon
ADDENDUM:
with $(inherited)Build Settings->Library Search Pathis automatically populated when you add a library to a target by clicking in the Target Membership right-hand pane. This does not happen otherwise.
附录：当您通过单击 Target Membership 右侧窗格将库添加到目标时，会自动填充$(inherited)Build Settings->Library Search Path。否则不会发生这种情况。
