![](/img/trans.png)
[英]Using Swift 3 in Xcode 10.2 - Command /Library/Developer/Toolchains/swift-3.0-RELEASE.xctoolchain/usr/bin/swiftc failed with exit code 1
[英]Swift package calling /usr/bin/swift errors with `Failed to open macho file...Too many levels of symbolic links` only when running from Xcode
I am developing a command line app in Swift which will call out to swift
in order to initialize packages, compile things, test things, etc. I am using the swift package manager and Xcode. 在我的工具中,我從Process
調用swift
。 如果我從命令行運行我的工具,這工作正常。 但是,如果我從 Xcode 運行我的工具,則會將一些奇怪的東西打印到標准錯誤中。 特別是,我得到
Failed to open macho file at /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swift for reading: Too many levels of symbolic links
這是什么原因造成的? 有什么方法可以避免它,或者我可以不從 Xcode 運行/測試這個實用程序嗎?
以下是復制步驟:
mkdir XcodeRedirectionTest
cd XcodeRedirectionTest
swift package init
open Package.swift
然后在Tests/XcodeRedirectionTestTests/XcodeRedirectionTestTests.swift
中,粘貼
import XCTest
final class XcodeRedirectionTestTests: XCTestCase {
func testExample() {
let process = Process()
process.launchPath = "/usr/bin/swift"
process.arguments = ["--version"]
let standardOutput = Pipe()
let standardError = Pipe()
process.standardOutput = standardOutput
process.standardError = standardError
process.launch()
process.waitUntilExit()
guard let output = String(data: standardOutput.fileHandleForReading.readDataToEndOfFile(), encoding: .utf8) else { XCTFail(); return }
guard let error = String(data: standardError.fileHandleForReading.readDataToEndOfFile(), encoding: .utf8) else { XCTFail(); return }
XCTAssertEqual(process.terminationReason, .exit)
XCTAssertEqual(process.terminationStatus, 0)
XCTAssertEqual(error, "")
XCTAssert(output.starts(with: "Apple Swift version 5.4"))
}
}
Xcode 中的測試失敗
file://.../XcodeRedirectionTest/Tests/XcodeRedirectionTestTests/XcodeRedirectionTestTests.swift: test failure: XcodeRedirectionTestTests.testExample() failed: XCTAssertEqual failed: ("2021-05-18 19:43:18.084463-0400 swift[2836:4100702] Failed to open macho file at /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swift for reading: Too many levels of symbolic links
") is not equal to ("")
也就是說(所以你不必滾動(盡可能多)),標准錯誤最終是
Failed to open macho file at /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swift for reading: Too many levels of symbolic links
但是,從命令行運行swift test
成功。 沒有標准錯誤!
如果重要的話,我在 macOS Big Sur 11.2.3 上運行 Xcode 12.5。
我能夠將其縮小到環境變量OS_ACTIVITY_DT_MODE
。 似乎 Xcode 在運行程序時將其設置為1
。 如果未設置此變量,則不會顯示錯誤。 我用來完成此操作的代碼是
if ProcessInfo.processInfo.environment.keys.contains("OS_ACTIVITY_DT_MODE") {
var env = ProcessInfo.processInfo.environment
env["OS_ACTIVITY_DT_MODE"] = nil
process.environment = env
}
這需要更多的測試來了解在環境中傳遞的PWD
和Process.currentDirectoryURL
之間的關系,但這至少可以讓球滾動起來。
聲明:本站的技術帖子網頁,遵循CC BY-SA 4.0協議,如果您需要轉載,請注明本站網址或者原文地址。任何問題請咨詢:yoyou2525@163.com.