swiftlang/swift

[SR-9216] Don't honor SDKROOT in interpreter mode

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#51,705 创建于 2018年11月9日

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 (4 评论) (0 反应) (0 负责人)Swift (69,989 star) (10,719 fork)batch import
bugcompilergood first issuelegacy driver

描述
Previous ID SR-9216
Radar rdar://problem/21819253
Original Reporter @belkadan
Type Bug
Votes 1
Component/s Compiler
Labels Bug, Driver, StarterBug
Assignee Jon (JIRA)
Priority Medium

md5: f3641cf6b439af1689bb8109248eccef

Issue Description:

People have tried to use Swift in Xcode Run Script build phases, but because Swift looks at the SDKROOT environment variable, the Run Script phase will fail when building a non-macOS target:

<unknown>:0: warning: using sysroot for 'iPhoneOS' but targeting 'MacOSX'
<unknown>:0: error: unable to load standard library for target 'x86_64-apple-macosx10.14'

We should just ignore SDKROOT when running the interpreter. Swift knows how to invoke xcrun to find the right SDK when it's not passed one explicitly.

贡献者指南

技术栈
swift
领域
tooling
议题类型
bug
难度面向新贡献者的预计实现难度，1 表示很小改动，5 表示专家级工作。
2
预计时间有经验贡献者完成调查、实现、测试并准备 pull request 的粗略时间范围。
under 1 hour
活动状态议题当前的可参与程度：新鲜、活跃、陈旧、阻塞或等待维护者输入。
stale
清晰度议题是否清楚说明期望改动、验收标准和下一步。
clear
前置要求
Basic understanding of Swift toolchainEnvironment variables
新手友好度1-100 的估计分数，表示该议题对首次贡献者的友好程度。
80
研究方向
The issue is about the Swift driver ignoring SDKROOT environment variable when running in interpreter mode. Look into the Swift driver source code, specifically how it handles SDKROOT and how it can be overridden when not passed explicitly. The fix likely involves conditionally setting the SDK based on xcrun invocation instead. Check comments on the issue for any hints.