Add project path information to errors & warnings from linker.

[brooke-callahan]

No description provided.

[jakepetroules]

@swift-ci test

[jakepetroules]

Oh, you've got one test failing:

16:58:40  ✘ Test linkerDriverDiagnosticsParsing() recorded an issue at LinkerTests.swift:64:35: Issue recorded
16:58:40  ↳ Unable to find error: '.prefix("Unknown argument: \'-not-a-real-flag\'")' (other errors: ["/private/var/folders/bb/hcrjxg1s0b96pfst0ymhmp240000gn/T/swbuild.tmp.upP6pray/Data.noindex/TestProject.xcodeproj: Unknown argument: \'-not-a-real-flag\' (for task: [\"Ld\", \"/private/var/folders/bb/hcrjxg1s0b96pfst0ymhmp240000gn/T/swbuild.tmp.upP6pray/Data.noindex/build/Debug/testTarget.framework/Versions/A/testTarget\", \"normal\"])", "Command Ld failed. The command `(cd /private/var/folders/bb/hcrjxg1s0b96pfst0ymhmp240000gn/T/swbuild.tmp.upP6pray/Data.noindex && env \'PATH=/Users/ec2-user/jenkins/workspace/pr-swift-build-macos@2/branch-main/swift-build/.build/x86_64-apple-macosx/debug/SwiftBuild_SWBUniversalPlatform.bundle:/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin:/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/local/bin:/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/libexec:/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/usr/bin:/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/usr/local/bin:/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/bin:/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/local/bin:/Applications/Xcode.app/Contents/Developer/usr/bin:/Applications/Xcode.app/Contents/Developer/usr/local/bin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin\' /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang -Xlinker -reproducible -target x86_64-apple-macos15.2 -dynamiclib -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.2.sdk -Os -L/private/var/folders/bb/hcrjxg1s0b96pfst0ymhmp240000gn/T/swbuild.tmp.upP6pray/Data.noindex/build/EagerLinkingTBDs/Debug -L/private/var/folders/bb/hcrjxg1s0b96pfst0ymhmp240000gn/T/swbuild.tmp.upP6pray/Data.noindex/build/Debug -F/private/var/folders/bb/hcrjxg1s0b96pfst0ymhmp240000gn/T/swbuild.tmp.upP6pray/Data.noindex/build/EagerLinkingTBDs/Debug -F/private/var/folders/bb/hcrjxg1s0b96pfst0ymhmp240000gn/T/swbuild.tmp.upP6pray/Data.noindex/build/Debug -filelist /private/var/folders/bb/hcrjxg1s0b96pfst0ymhmp240000gn/T/swbuild.tmp.upP6pray/Data.noindex/build/TestProject.build/Debug/testTarget.build/Objects-normal/x86_64/testTarget.LinkFileList -install_name /Library/Frameworks/testTarget.framework/Versions/A/testTarget -Xlinker -object_path_lto -Xlinker /private/var/folders/bb/hcrjxg1s0b96pfst0ymhmp240000gn/T/swbuild.tmp.upP6pray/Data.noindex/build/TestProject.build/Debug/testTarget.build/Objects-normal/x86_64/testTarget_lto.o -Xlinker -dependency_info -Xlinker /private/var/folders/bb/hcrjxg1s0b96pfst0ymhmp240000gn/T/swbuild.tmp.upP6pray/Data.noindex/build/TestProject.build/Debug/testTarget.build/Objects-normal/x86_64/testTarget_dependency_info.dat -fobjc-link-runtime -L/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/macosx -L/usr/lib/swift -Xlinker -add_ast_path -Xlinker /private/var/folders/bb/hcrjxg1s0b96pfst0ymhmp240000gn/T/swbuild.tmp.upP6pray/Data.noindex/build/TestProject.build/Debug/testTarget.build/Objects-normal/x86_64/testTarget.swiftmodule -not-a-real-flag -o /private/var/folders/bb/hcrjxg1s0b96pfst0ymhmp240000gn/T/swbuild.tmp.upP6pray/Data.noindex/build/Debug/testTarget.framework/Versions/A/testTarget)` exited with status 1. The command\'s output was:\n\nclang: error: unknown argument: \'-not-a-real-flag\'\n"])
16:58:40  ✘ Test linkerDriverDiagnosticsParsing() recorded an issue at LinkerTests.swift:63:40: Issue recorded
16:58:40  ↳ found unexpected error: /private/var/folders/bb/hcrjxg1s0b96pfst0ymhmp240000gn/T/swbuild.tmp.upP6pray/Data.noindex/TestProject.xcodeproj: Unknown argument: '-not-a-real-flag' (for task: ["Ld", "/private/var/folders/bb/hcrjxg1s0b96pfst0ymhmp240000gn/T/swbuild.tmp.upP6pray/Data.noindex/build/Debug/testTarget.framework/Versions/A/testTarget", "normal"])
16:58:40  ✘ Test linkerDriverDiagnosticsParsing() recorded an issue at LinkerTests.swift:63:40: Issue recorded

You'll need to change it to incorporate the xcodeproj path into the expected error message (you can use tmpDir to compute the prefix part of the path, since it's variable).

[brooke-callahan]

@swift-ci test

[jakepetroules]

@swift-ci test