Debug Swift Build fails

xavgru · April 21, 2024, 11:33am

No matter what I try, this comand always fails with:

FAILED: SwiftCompilerSources/Basic.o /home/xaver/swiftDevelopment/build/Ninja-RelWithDebInfoAssert+swift-DebugAssert/swift-linux-x86_64/SwiftCompilerSources/Basic.o
cd /home/xaver/swiftDevelopment/swift/SwiftCompilerSources && /usr/bin/swiftc -c -o /home/xaver/swiftDevelopment/build/Ninja-RelWithDebInfoAssert+swift-DebugAssert/swift-linux-x86_64/SwiftCompilerSources/Basic.o -I /usr/bin/../lib -I /usr/lib -target x86_64-unknown-linux-gnu -module-name Basic -emit-module -emit-module-path /home/xaver/swiftDevelopment/build/Ninja-RelWithDebInfoAssert+swift-DebugAssert/swift-linux-x86_64/SwiftCompilerSources/Basic.swiftmodule -parse-as-library /home/xaver/swiftDevelopment/swift/SwiftCompilerSources/Sources/Basic/SourceLoc.swift /home/xaver/swiftDevelopment/swift/SwiftCompilerSources/Sources/Basic/StringParser.swift /home/xaver/swiftDevelopment/swift/SwiftCompilerSources/Sources/Basic/Utils.swift -wmo -color-diagnostics -Xfrontend -validate-tbd-against-ir=none -Xfrontend -disable-target-os-checking -Xcc -std=c++17 -Xcc -DCOMPILED_WITH_SWIFT -Xcc -DSWIFT_TARGET -Xcc -UIBOutlet -Xcc -UIBAction -Xcc -UIBInspectable -cxx-interoperability-mode=default -g -Xcc -UNDEBUG -Xcc -DPURE_BRIDGING_MODE -Xcc -I -Xcc /home/xaver/swiftDevelopment/llvm-project/llvm/include -Xcc -I -Xcc /home/xaver/swiftDevelopment/build/Ninja-RelWithDebInfoAssert+swift-DebugAssert/llvm-linux-x86_64/include -Xcc -I -Xcc /home/xaver/swiftDevelopment/llvm-project/clang/include -Xcc -I -Xcc /home/xaver/swiftDevelopment/build/Ninja-RelWithDebInfoAssert+swift-DebugAssert/llvm-linux-x86_64/tools/clang/include -Xcc -I -Xcc /home/xaver/swiftDevelopment/swift/include -Xcc -I -Xcc /home/xaver/swiftDevelopment/build/Ninja-RelWithDebInfoAssert+swift-DebugAssert/swift-linux-x86_64/SwiftCompilerSources/../include -I /home/xaver/swiftDevelopment/build/Ninja-RelWithDebInfoAssert+swift-DebugAssert/swift-linux-x86_64/SwiftCompilerSources
SwiftDriverExecution/MultiJobExecutor.swift:207: Fatal error: multiple producers for output /home/xaver/swiftDevelopment/build/Ninja-RelWithDebInfoAssert+swift-DebugAssert/swift-linux-x86_64/SwiftCompilerSources/Basic.o: Wrapping Swift module Basic & Compiling Basic SourceLoc.swift

I am on Ubuntu 23.04. I have installed all the dependencies and swift 5.8.1 is in my path. This is the command:
./utils/build-script --release-debuginfo --debug-swift

This is the complete log:

gist.github.com

https://gist.github.com/xavgru12/abf9c465b6333186f55cff04892bb802

gistfile1.txt

Updating files:  81% (20592/25421)
Updating files:  82% (20846/25421)
Updating files:  83% (21100/25421)
Updating files:  84% (21354/25421)
Updating files:  85% (21608/25421)
Updating files:  86% (21863/25421)
Updating files:  87% (22117/25421)
Updating files:  88% (22371/25421)
Updating files:  89% (22625/25421)
Updating files:  90% (22879/25421)

This file has been truncated. show original

dump config:

gist.github.com

https://gist.github.com/xavgru12/6cdd5e28f5e31c1a17456b5badbe5654

gistfile1.txt

./utils/build-script --release-debuginfo --sccache --debug-swift --dump-config
[./utils/build-script] NOTE: Using toolchain default
+ cmake --version
Ensuring the sccache server is running...
+ /snap/bin/sccache --show-stats
{
  "args": {
    "_build_llvm": true,
    "android": false,
    "android_api_level": "21",

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As I understand --debug-swift turns off optimizations in order to debug better.
Any idea how to get it to compile?

Finagolfin · April 21, 2024, 12:10pm

23.04 is currently not tested on the official CI and I notice you are running the 22.04 toolchain instead, with that swift-driver crashing when building the Swift portions of the trunk compiler. You could try installing Neil's 23.04 build of the 5.8.1 toolchain instead and see if that makes a difference.

drodriguez · May 8, 2024, 3:10am

@xavgru do you mind testing if Fix Swift Compiler Modules support in Debug mode by drodriguez · Pull Request #73506 · apple/swift · GitHub works for you? I found the same problem and those changes allow me to get things working. It would be great to have verification by another person in another system.

But I think the best recommendation is not trying to use Debug mode at all and stick with --release-debuginfo and avoid --debug-swift.

xavgru · January 19, 2025, 4:17pm

I am trying it again with Ubuntu 24.04 and ran into another compile error.
If we offer the option --debug-swift, it should work.
I wanted to turn off optimizations inside swift/lib/Sema in order to debug better.

failing build:

gist.github.com

https://gist.github.com/xavgru12/e8ebd525a8f1be628dabd3b6364273d2

gistfile1.txt

ssert/llvm-linux-x86_64/lib/libLLVMDemangle.a  -lrt  -ldl  -lm  /usr/lib/x86_64-linux-gnu/libz.so && :
lib/libswiftMacroEvaluation.a(Macros.swift.o):Macros.swift.o:function $s20swiftMacroEvaluation018expandFreestandingB013diagEnginePtr05macroH017discriminatorText03rawB4Role010sourceFileH00n8LocationH0017expandedSourceOutH0SiSv_SVSPys4Int8VGs5UInt8VSVSPyANGSgSpySo16BridgedStringRefVGtF:(.text.$s20swiftMacroEvaluation018expandFreestandingB013diagEnginePtr05macroH017discriminatorText03rawB4Role010sourceFileH00n8LocationH0017expandedSourceOutH0SiSv_SVSPys4Int8VGs5UInt8VSVSPyANGSgSpySo16BridgedStringRefVGtF+0x350): error: undefined reference to '$ss27_allocateUninitializedArrayySayxG_BptBwlFyp_Tg5'
lib/libswiftMacroEvaluation.a(Macros.swift.o):Macros.swift.o:function $s20swiftMacroEvaluation018expandFreestandingB013diagEnginePtr05macroH017discriminatorText03rawB4Role010sourceFileH00n8LocationH0017expandedSourceOutH0SiSv_SVSPys4Int8VGs5UInt8VSVSPyANGSgSpySo16BridgedStringRefVGtF:(.text.$s20swiftMacroEvaluation018expandFreestandingB013diagEnginePtr05macroH017discriminatorText03rawB4Role010sourceFileH00n8LocationH0017expandedSourceOutH0SiSv_SVSPys4Int8VGs5UInt8VSVSPyANGSgSpySo16BridgedStringRefVGtF+0x5b4): error: undefined reference to '$ss27_allocateUninitializedArrayySayxG_BptBwlFyp_Tg5'
lib/libswiftASTGen.a(DiagnosticsBridge.swift.o):DiagnosticsBridge.swift.o:function $s11swiftASTGen19addQueuedDiagnostic20queuedDiagnosticsPtr4text0I6Length8severity4cLoc015highlightRangesH0012numHighlightN0ySv_SPys5UInt8VGSiSo07BridgedE8SeverityVSo0r6SourceL0VSPyAPGSgSitF:(.text.$s11swiftASTGen19addQueuedDiagnostic20queuedDiagnosticsPtr4text0I6Length8severity4cLoc015highlightRangesH0012numHighlightN0ySv_SPys5UInt8VGSiSo07BridgedE8SeverityVSo0r6SourceL0VSPyAPGSgSitF+0xb38): error: undefined reference to '$sSlss16IndexingIteratorVyxG0B0RtzrlE04makeB0ACyFSnySiG_Tg5'
lib/libswiftASTGen.a(DiagnosticsBridge.swift.o):DiagnosticsBridge.swift.o:function $s11swiftASTGen19addQueuedDiagnostic20queuedDiagnosticsPtr4text0I6Length8severity4cLoc015highlightRangesH0012numHighlightN0ySv_SPys5UInt8VGSiSo07BridgedE8SeverityVSo0r6SourceL0VSPyAPGSgSitF:(.text.$s11swiftASTGen19addQueuedDiagnostic20queuedDiagnosticsPtr4text0I6Length8severity4cLoc015highlightRangesH0012numHighlightN0ySv_SPys5UInt8VGSiSo07BridgedE8SeverityVSo0r6SourceL0VSPyAPGSgSitF+0xb78): error: undefined reference to '$ss16IndexingIteratorV4next7ElementQzSgyFSnySiG_Tg5'
lib/libswiftASTGen.a(LexicalLookup.swift.o):LexicalLookup.swift.o:function $sSS11swiftASTGenE14addPaddingUpTo33_CFA2C99ADB37D26A26D800A9461D085FLL10charactersSSSi_tF:(.text+0x1144): error: undefined reference to '$sSlss16IndexingIteratorVyxG0B0RtzrlE04makeB0ACyFSnySiG_Tg5'
lib/libswiftASTGen.a(LexicalLookup.swift.o):LexicalLookup.swift.o:function $sSS11swiftASTGenE14addPaddingUpTo33_CFA2C99ADB37D26A26D800A9461D085FLL10charactersSSSi_tF:(.text+0x1159): error: undefined reference to '$ss16IndexingIteratorV4next7ElementQzSgyFSnySiG_Tg5'
lib/libswiftASTGen.a(LexicalLookup.swift.o):LexicalLookup.swift.o:function $sSS11swiftASTGenE14addPaddingUpTo33_CFA2C99ADB37D26A26D800A9461D085FLL10charactersSSSi_tF:(.text+0x1282): error: undefined reference to '$sSlss16IndexingIteratorVyxG0B0RtzrlE04makeB0ACyFSnySiG_Tg5'
lib/libswiftASTGen.a(LexicalLookup.swift.o):LexicalLookup.swift.o:function $sSS11swiftASTGenE14addPaddingUpTo33_CFA2C99ADB37D26A26D800A9461D085FLL10charactersSSSi_tF:(.text+0x12a3): error: undefined reference to '$ss16IndexingIteratorV4next7ElementQzSgyFSnySiG_Tg5'
lib/libswiftASTGen.a(LexicalLookup.swift.o):LexicalLookup.swift.o:function $s11swiftASTGen18astConsumedResults33_CFA2C99ADB37D26A26D800A9461D085FLL10sourceFile0C14ScopeResultRefSayAA0d6LookupQ0ACLLCGSPyAA014ExportedSourceO0VG_So012BridgedArrayR0VtFAGSgSo0vdsQ0VXEfU_:(.text+0x44e0): error: undefined reference to '$ss27_allocateUninitializedArrayySayxG_BptBwlFyp_Tg5'

This file has been truncated. show original

config

gist.github.com

https://gist.github.com/xavgru12/bd8fc2796e90b8e03356a60beb146f65

gistfile1.txt

xaver@xaver-HP-EliteBook-860-16-inch-G10-Notebook-PC:~/code/withDebugSwift/swift$ ./utils/build-script --release-debuginfo --debug-swift --clean --dump-config --dry-run
[./utils/build-script] NOTE: Using toolchain default
+ cmake --version
+ /home/xaver/code/withDebugSwift/cmake/bootstrap --no-qt-gui --parallel=20 -- -DCMAKE_USE_OPENSSL=OFF
---------------------------------------------
CMake 3.30.2, Copyright 2000-2024 Kitware, Inc. and Contributors
Found GNU toolchain
C compiler on this system is: gcc
C++ compiler on this system is: g++
Makefile processor on this system is: gmake

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