[LLVM] Rebuild for riscv64

[Zentrik]

No description provided.

[giordano]

For stdlibs we don't have to change version number

[giordano]

We went very far with the compilation for riscv64, it failed only at linking libllvm:

[21:02:53] [7117/7965] : && /opt/bin/riscv64-linux-gnu-libgfortran5-cxx11/riscv64-linux-gnu-g++ --sysroot=/opt/riscv64-linux-gnu/riscv64-linux-gnu/sys-root/ -fPIC -fno-gnu-unique -fPIC -fno-semantic-interposition -fvisibility-inlines-hidden -Werror=date-time -fno-lifetime-dse -Wall -Wextra -Wno-unused-parameter -Wwrite-strings -Wcast-qual -Wno-missing-field-initializers -pedantic -Wno-long-long -Wimplicit-fallthrough -Wno-maybe-uninitialized -Wno-nonnull -Wno-class-memaccess -Wno-redundant-move -Wno-pessimizing-move -Wno-noexcept-type -Wdelete-non-virtual-dtor -Wsuggest-override -Wno-comment -Wno-misleading-indentation -Wctad-maybe-unsupported -fdiagnostics-color -ffunction-sections -fdata-sections -O3 -DNDEBUG  -Wl,-z,defs -Wl,-z,nodelete   -Wl,-rpath-link,/workspace/build/./lib  -Wl,--gc-sections  -Wl,-Bsymbolic-functions -shared -Wl,-soname,libLLVM.so.19.1jl -o lib/libLLVM.so.19.1jl tools/llvm-shlib/CMakeFiles/LLVM.dir/libllvm.cpp.o  -Wl,-rpath,"\$ORIGIN/../lib:/usr/local/lib:"  -Wl,--version-script,/workspace/build/./lib/tools/llvm-shlib/simple_version_script.map  -Wl,--whole-archive  lib/libLLVMDemangle.a  lib/libLLVMSupport.a  lib/libLLVMCore.a  lib/libLLVMFuzzerCLI.a  lib/libLLVMFuzzMutate.a  lib/libLLVMFileCheck.a  lib/libLLVMInterfaceStub.a  lib/libLLVMIRPrinter.a  lib/libLLVMIRReader.a  lib/libLLVMCodeGen.a  lib/libLLVMSelectionDAG.a  lib/libLLVMAsmPrinter.a  lib/libLLVMMIRParser.a  lib/libLLVMGlobalISel.a  lib/libLLVMCodeGenData.a  lib/libLLVMCodeGenTypes.a  lib/libLLVMBinaryFormat.a  lib/libLLVMBitReader.a  lib/libLLVMBitWriter.a  lib/libLLVMBitstreamReader.a  lib/libLLVMDWARFLinker.a  lib/libLLVMDWARFLinkerClassic.a  lib/libLLVMDWARFLinkerParallel.a  lib/libLLVMExtensions.a  lib/libLLVMFrontendDriver.a  lib/libLLVMFrontendHLSL.a  lib/libLLVMFrontendOpenACC.a  lib/libLLVMFrontendOpenMP.a  lib/libLLVMFrontendOffloading.a  lib/libLLVMTransformUtils.a  lib/libLLVMInstrumentation.a  lib/libLLVMAggressiveInstCombine.a  lib/libLLVMInstCombine.a  lib/libLLVMScalarOpts.a  lib/libLLVMipo.a  lib/libLLVMVectorize.a  lib/libLLVMObjCARCOpts.a  lib/libLLVMCoroutines.a  lib/libLLVMCFGuard.a  lib/libLLVMHipStdPar.a  lib/libLLVMLinker.a  lib/libLLVMAnalysis.a  lib/libLLVMLTO.a  lib/libLLVMMC.a  lib/libLLVMMCParser.a  lib/libLLVMMCDisassembler.a  lib/libLLVMMCA.a  lib/libLLVMObjCopy.a  lib/libLLVMObject.a  lib/libLLVMObjectYAML.a  lib/libLLVMOption.a  lib/libLLVMRemarks.a  lib/libLLVMDebugInfoDWARF.a  lib/libLLVMDebugInfoGSYM.a  lib/libLLVMDebugInfoLogicalView.a  lib/libLLVMDebugInfoMSF.a  lib/libLLVMDebugInfoCodeView.a  lib/libLLVMDebugInfoPDB.a  lib/libLLVMSymbolize.a  lib/libLLVMDebugInfoBTF.a  lib/libLLVMDWP.a  lib/libLLVMExecutionEngine.a  lib/libLLVMIntelJITProfiling.a  lib/libLLVMIntelJITEvents.a  lib/libLLVMInterpreter.a  lib/libLLVMJITLink.a  lib/libLLVMMCJIT.a  lib/libLLVMOrcJIT.a  lib/libLLVMOrcDebugging.a  lib/libLLVMOrcShared.a  lib/libLLVMOrcTargetProcess.a  lib/libLLVMRuntimeDyld.a  lib/libLLVMPerfJITEvents.a  lib/libLLVMTarget.a  lib/libLLVMAMDGPUCodeGen.a  lib/libLLVMAMDGPUAsmParser.a  lib/libLLVMAMDGPUDisassembler.a  lib/libLLVMAMDGPUTargetMCA.a  lib/libLLVMAMDGPUDesc.a  lib/libLLVMAMDGPUInfo.a  lib/libLLVMAMDGPUUtils.a  lib/libLLVMNVPTXCodeGen.a  lib/libLLVMNVPTXDesc.a  lib/libLLVMNVPTXInfo.a  lib/libLLVMWebAssemblyCodeGen.a  lib/libLLVMWebAssemblyAsmParser.a  lib/libLLVMWebAssemblyDisassembler.a  lib/libLLVMWebAssemblyDesc.a  lib/libLLVMWebAssemblyInfo.a  lib/libLLVMWebAssemblyUtils.a  lib/libLLVMBPFCodeGen.a  lib/libLLVMBPFAsmParser.a  lib/libLLVMBPFDisassembler.a  lib/libLLVMBPFDesc.a  lib/libLLVMBPFInfo.a  lib/libLLVMAVRCodeGen.a  lib/libLLVMAVRAsmParser.a  lib/libLLVMAVRDisassembler.a  lib/libLLVMAVRDesc.a  lib/libLLVMAVRInfo.a  lib/libLLVMRISCVCodeGen.a  lib/libLLVMRISCVAsmParser.a  lib/libLLVMRISCVDisassembler.a  lib/libLLVMRISCVDesc.a  lib/libLLVMRISCVTargetMCA.a  lib/libLLVMRISCVInfo.a  lib/libLLVMSandboxIR.a  lib/libLLVMAsmParser.a  lib/libLLVMLineEditor.a  lib/libLLVMProfileData.a  lib/libLLVMCoverage.a  lib/libLLVMPasses.a  lib/libLLVMTargetParser.a  lib/libLLVMTextAPI.a  lib/libLLVMTextAPIBinaryReader.a  lib/libLLVMDlltoolDriver.a  lib/libLLVMLibDriver.a  lib/libLLVMXRay.a  lib/libLLVMWindowsDriver.a  lib/libLLVMWindowsManifest.a  -Wl,--no-whole-archive  lib/libLLVMDWARFLinker.a  lib/libLLVMExtensions.a  lib/libLLVMOrcJIT.a  lib/libLLVMJITLink.a  lib/libLLVMWindowsDriver.a  lib/libLLVMExecutionEngine.a  lib/libLLVMOrcTargetProcess.a  lib/libLLVMIntelJITProfiling.a  lib/libLLVMOrcShared.a  lib/libLLVMRuntimeDyld.a  lib/libLLVMMIRParser.a  lib/libLLVMWebAssemblyDesc.a  lib/libLLVMWebAssemblyInfo.a  lib/libLLVMPasses.a  lib/libLLVMIRPrinter.a  lib/libLLVMCoroutines.a  lib/libLLVMCFGuard.a  lib/libLLVMHipStdPar.a  lib/libLLVMAsmPrinter.a  lib/libLLVMGlobalISel.a  lib/libLLVMSelectionDAG.a  lib/libLLVMCodeGen.a  lib/libLLVMObjCARCOpts.a  lib/libLLVMipo.a  lib/libLLVMBitWriter.a  lib/libLLVMFrontendOpenMP.a  lib/libLLVMFrontendOffloading.a  lib/libLLVMInstrumentation.a  lib/libLLVMScalarOpts.a  lib/libLLVMAggressiveInstCombine.a  lib/libLLVMInstCombine.a  lib/libLLVMLinker.a  lib/libLLVMVectorize.a  lib/libLLVMTransformUtils.a  lib/libLLVMTarget.a  lib/libLLVMAnalysis.a  lib/libLLVMMCDisassembler.a  lib/libLLVMCodeGenTypes.a  lib/libLLVMMCA.a  lib/libLLVMRISCVDesc.a  lib/libLLVMRISCVInfo.a  lib/libLLVMProfileData.a  lib/libLLVMSymbolize.a  lib/libLLVMDebugInfoPDB.a  lib/libLLVMDebugInfoMSF.a  lib/libLLVMDebugInfoBTF.a  lib/libLLVMDebugInfoDWARF.a  lib/libLLVMOption.a  lib/libLLVMObject.a  lib/libLLVMIRReader.a  lib/libLLVMAsmParser.a  lib/libLLVMBitReader.a  lib/libLLVMCore.a  lib/libLLVMRemarks.a  lib/libLLVMBitstreamReader.a  lib/libLLVMMCParser.a  lib/libLLVMMC.a  lib/libLLVMDebugInfoCodeView.a  lib/libLLVMTextAPI.a  lib/libLLVMBinaryFormat.a  lib/libLLVMTargetParser.a  lib/libLLVMSupport.a  lib/libLLVMDemangle.a  -lrt  -ldl  -lm  /opt/riscv64-linux-gnu/riscv64-linux-gnu/sys-root/usr/local/lib/libz.so && :
[21:03:48] ninja: job failed: : && /opt/bin/riscv64-linux-gnu-libgfortran5-cxx11/riscv64-linux-gnu-g++ --sysroot=/opt/riscv64-linux-gnu/riscv64-linux-gnu/sys-root/ -fPIC -fno-gnu-unique -fPIC -fno-semantic-interposition -fvisibility-inlines-hidden -Werror=date-time -fno-lifetime-dse -Wall -Wextra -Wno-unused-parameter -Wwrite-strings -Wcast-qual -Wno-missing-field-initializers -pedantic -Wno-long-long -Wimplicit-fallthrough -Wno-maybe-uninitialized -Wno-nonnull -Wno-class-memaccess -Wno-redundant-move -Wno-pessimizing-move -Wno-noexcept-type -Wdelete-non-virtual-dtor -Wsuggest-override -Wno-comment -Wno-misleading-indentation -Wctad-maybe-unsupported -fdiagnostics-color -ffunction-sections -fdata-sections -O3 -DNDEBUG  -Wl,-z,defs -Wl,-z,nodelete   -Wl,-rpath-link,/workspace/build/./lib  -Wl,--gc-sections  -Wl,-Bsymbolic-functions -shared -Wl,-soname,libLLVM.so.19.1jl -o lib/libLLVM.so.19.1jl tools/llvm-shlib/CMakeFiles/LLVM.dir/libllvm.cpp.o  -Wl,-rpath,"\$ORIGIN/../lib:/usr/local/lib:"  -Wl,--version-script,/workspace/build/./lib/tools/llvm-shlib/simple_version_script.map  -Wl,--whole-archive  lib/libLLVMDemangle.a  lib/libLLVMSupport.a  lib/libLLVMCore.a  lib/libLLVMFuzzerCLI.a  lib/libLLVMFuzzMutate.a  lib/libLLVMFileCheck.a  lib/libLLVMInterfaceStub.a  lib/libLLVMIRPrinter.a  lib/libLLVMIRReader.a  lib/libLLVMCodeGen.a  lib/libLLVMSelectionDAG.a  lib/libLLVMAsmPrinter.a  lib/libLLVMMIRParser.a  lib/libLLVMGlobalISel.a  lib/libLLVMCodeGenData.a  lib/libLLVMCodeGenTypes.a  lib/libLLVMBinaryFormat.a  lib/libLLVMBitReader.a  lib/libLLVMBitWriter.a  lib/libLLVMBitstreamReader.a  lib/libLLVMDWARFLinker.a  lib/libLLVMDWARFLinkerClassic.a  lib/libLLVMDWARFLinkerParallel.a  lib/libLLVMExtensions.a  lib/libLLVMFrontendDriver.a  lib/libLLVMFrontendHLSL.a  lib/libLLVMFrontendOpenACC.a  lib/libLLVMFrontendOpenMP.a  lib/libLLVMFrontendOffloading.a  lib/libLLVMTransformUtils.a  lib/libLLVMInstrumentation.a  lib/libLLVMAggressiveInstCombine.a  lib/libLLVMInstCombine.a  lib/libLLVMScalarOpts.a  lib/libLLVMipo.a  lib/libLLVMVectorize.a  lib/libLLVMObjCARCOpts.a  lib/libLLVMCoroutines.a  lib/libLLVMCFGuard.a  lib/libLLVMHipStdPar.a  lib/libLLVMLinker.a  lib/libLLVMAnalysis.a  lib/libLLVMLTO.a  lib/libLLVMMC.a  lib/libLLVMMCParser.a  lib/libLLVMMCDisassembler.a  lib/libLLVMMCA.a  lib/libLLVMObjCopy.a  lib/libLLVMObject.a  lib/libLLVMObjectYAML.a  lib/libLLVMOption.a  lib/libLLVMRemarks.a  lib/libLLVMDebugInfoDWARF.a  lib/libLLVMDebugInfoGSYM.a  lib/libLLVMDebugInfoLogicalView.a  lib/libLLVMDebugInfoMSF.a  lib/libLLVMDebugInfoCodeView.a  lib/libLLVMDebugInfoPDB.a  lib/libLLVMSymbolize.a  lib/libLLVMDebugInfoBTF.a  lib/libLLVMDWP.a  lib/libLLVMExecutionEngine.a  lib/libLLVMIntelJITProfiling.a  lib/libLLVMIntelJITEvents.a  lib/libLLVMInterpreter.a  lib/libLLVMJITLink.a  lib/libLLVMMCJIT.a  lib/libLLVMOrcJIT.a  lib/libLLVMOrcDebugging.a  lib/libLLVMOrcShared.a  lib/libLLVMOrcTargetProcess.a  lib/libLLVMRuntimeDyld.a  lib/libLLVMPerfJITEvents.a  lib/libLLVMTarget.a  lib/libLLVMAMDGPUCodeGen.a  lib/libLLVMAMDGPUAsmParser.a  lib/libLLVMAMDGPUDisassembler.a  lib/libLLVMAMDGPUTargetMCA.a  lib/libLLVMAMDGPUDesc.a  lib/libLLVMAMDGPUInfo.a  lib/libLLVMAMDGPUUtils.a  lib/libLLVMNVPTXCodeGen.a  lib/libLLVMNVPTXDesc.a  lib/libLLVMNVPTXInfo.a  lib/libLLVMWebAssemblyCodeGen.a  lib/libLLVMWebAssemblyAsmParser.a  lib/libLLVMWebAssemblyDisassembler.a  lib/libLLVMWebAssemblyDesc.a  lib/libLLVMWebAssemblyInfo.a  lib/libLLVMWebAssemblyUtils.a  lib/libLLVMBPFCodeGen.a  lib/libLLVMBPFAsmParser.a  lib/libLLVMBPFDisassembler.a  lib/libLLVMBPFDesc.a  lib/libLLVMBPFInfo.a  lib/libLLVMAVRCodeGen.a  lib/libLLVMAVRAsmParser.a  lib/libLLVMAVRDisassembler.a  lib/libLLVMAVRDesc.a  lib/libLLVMAVRInfo.a  lib/libLLVMRISCVCodeGen.a  lib/libLLVMRISCVAsmParser.a  lib/libLLVMRISCVDisassembler.a  lib/libLLVMRISCVDesc.a  lib/libLLVMRISCVTargetMCA.a  lib/libLLVMRISCVInfo.a  lib/libLLVMSandboxIR.a  lib/libLLVMAsmParser.a  lib/libLLVMLineEditor.a  lib/libLLVMProfileData.a  lib/libLLVMCoverage.a  lib/libLLVMPasses.a  lib/libLLVMTargetParser.a  lib/libLLVMTextAPI.a  lib/libLLVMTextAPIBinaryReader.a  lib/libLLVMDlltoolDriver.a  lib/libLLVMLibDriver.a  lib/libLLVMXRay.a  lib/libLLVMWindowsDriver.a  lib/libLLVMWindowsManifest.a  -Wl,--no-whole-archive  lib/libLLVMDWARFLinker.a  lib/libLLVMExtensions.a  lib/libLLVMOrcJIT.a  lib/libLLVMJITLink.a  lib/libLLVMWindowsDriver.a  lib/libLLVMExecutionEngine.a  lib/libLLVMOrcTargetProcess.a  lib/libLLVMIntelJITProfiling.a  lib/libLLVMOrcShared.a  lib/libLLVMRuntimeDyld.a  lib/libLLVMMIRParser.a  lib/libLLVMWebAssemblyDesc.a  lib/libLLVMWebAssemblyInfo.a  lib/libLLVMPasses.a  lib/libLLVMIRPrinter.a  lib/libLLVMCoroutines.a  lib/libLLVMCFGuard.a  lib/libLLVMHipStdPar.a  lib/libLLVMAsmPrinter.a  lib/libLLVMGlobalISel.a  lib/libLLVMSelectionDAG.a  lib/libLLVMCodeGen.a  lib/libLLVMObjCARCOpts.a  lib/libLLVMipo.a  lib/libLLVMBitWriter.a  lib/libLLVMFrontendOpenMP.a  lib/libLLVMFrontendOffloading.a  lib/libLLVMInstrumentation.a  lib/libLLVMScalarOpts.a  lib/libLLVMAggressiveInstCombine.a  lib/libLLVMInstCombine.a  lib/libLLVMLinker.a  lib/libLLVMVectorize.a  lib/libLLVMTransformUtils.a  lib/libLLVMTarget.a  lib/libLLVMAnalysis.a  lib/libLLVMMCDisassembler.a  lib/libLLVMCodeGenTypes.a  lib/libLLVMMCA.a  lib/libLLVMRISCVDesc.a  lib/libLLVMRISCVInfo.a  lib/libLLVMProfileData.a  lib/libLLVMSymbolize.a  lib/libLLVMDebugInfoPDB.a  lib/libLLVMDebugInfoMSF.a  lib/libLLVMDebugInfoBTF.a  lib/libLLVMDebugInfoDWARF.a  lib/libLLVMOption.a  lib/libLLVMObject.a  lib/libLLVMIRReader.a  lib/libLLVMAsmParser.a  lib/libLLVMBitReader.a  lib/libLLVMCore.a  lib/libLLVMRemarks.a  lib/libLLVMBitstreamReader.a  lib/libLLVMMCParser.a  lib/libLLVMMC.a  lib/libLLVMDebugInfoCodeView.a  lib/libLLVMTextAPI.a  lib/libLLVMBinaryFormat.a  lib/libLLVMTargetParser.a  lib/libLLVMSupport.a  lib/libLLVMDemangle.a  -lrt  -ldl  -lm  /opt/riscv64-linux-gnu/riscv64-linux-gnu/sys-root/usr/local/lib/libz.so && :
[21:03:48] /opt/riscv64-linux-gnu/bin/../lib/gcc/riscv64-linux-gnu/13.2.0/../../../../riscv64-linux-gnu/bin/ld: lib/libLLVMIntelJITProfiling.a(ittnotify_static.c.o): in function `.L0 ':
[21:03:48] ittnotify_static.c:(.text.__itt_domain_create_init_3_0+0x23a): undefined reference to `__TBB_machine_fetchadd4'
[21:03:48] /opt/riscv64-linux-gnu/bin/../lib/gcc/riscv64-linux-gnu/13.2.0/../../../../riscv64-linux-gnu/bin/ld: ittnotify_static.c:(.text.__itt_string_handle_create_init_3_0+0x234): undefined reference to `__TBB_machine_fetchadd4'
[21:03:48] /opt/riscv64-linux-gnu/bin/../lib/gcc/riscv64-linux-gnu/13.2.0/../../../../riscv64-linux-gnu/bin/ld: ittnotify_static.c:(.text.__itt_counter_create_init_3_0+0x292): undefined reference to `__TBB_machine_fetchadd4'
[21:03:48] /opt/riscv64-linux-gnu/bin/../lib/gcc/riscv64-linux-gnu/13.2.0/../../../../riscv64-linux-gnu/bin/ld: ittnotify_static.c:(.text.__itt_counter_create_typed_init_3_0+0x29e): undefined reference to `__TBB_machine_fetchadd4'
[21:03:48] /opt/riscv64-linux-gnu/bin/../lib/gcc/riscv64-linux-gnu/13.2.0/../../../../riscv64-linux-gnu/bin/ld: lib/libLLVMIntelJITProfiling.a(ittnotify_static.c.o): in function `.L2109':
[21:03:48] ittnotify_static.c:(.text.__itt_fini_ittlib+0x196): undefined reference to `__TBB_machine_fetchadd4'
[21:03:48] /opt/riscv64-linux-gnu/bin/../lib/gcc/riscv64-linux-gnu/13.2.0/../../../../riscv64-linux-gnu/bin/ld: lib/libLLVMIntelJITProfiling.a(ittnotify_static.c.o):ittnotify_static.c:(.text.__itt_init_ittlib+0x2ac): more undefined references to `__TBB_machine_fetchadd4' follow
[21:03:48] collect2: error: ld returned 1 exit status
[21:03:48] ninja: subcommand failed

Maybe another thing which requires GCC 14? I was able to compile LLVM on riscv64 with GCC 14.2 (it just took half a day 🥲)

[imciner2]

__TBB_machine_fetchadd4 sounds like it is coming from TBB, so is there a dependency on it that isn't declared somewhere? Because we don't have a RISCV build for it yet (that is going to be part of the larger update in #10082, but I haven't gotten around to sorting out the errors yet).

[imciner2]

I haven't looked closely here yet uxlfoundation/oneTBB#186, but it sounds like there might be some arch-specific code paths in the ITT library there that might need fixing up.

[Zentrik]

Looks like it comes from ittapi which llvm uses, https://github.com/llvm/llvm-project/blob/f4230b4332262dffb0bd3b7a2f8d6deb2e96488e/llvm/lib/ExecutionEngine/IntelJITProfiling/ittnotify_config.h#L263.

[giordano]

But...why are we compiling this code path for riscv? 😕 For the record, my Make.user is

# -*- makefile -*-

override USECCACHE = 1
MARCH := rv64gcv
CFLAGS := -mabi=lp64d
CXXFLAGS := $(CFLAGS)
FFLAGS := $(CFLAGS)

USE_INTEL_JITEVENTS = 0

USE_BINARYBUILDER:=0

DEPS_GIT = llvm
override LLVM_VER=19.1.1
override LLVM_BRANCH=julia-release/19.x
override LLVM_SHA1=julia-release/19.x

and USE_INTEL_JITEVENTS is used at https://github.com/JuliaLang/julia/blob/89afe2026671dee633747a7eeeb4db721395835b/deps/llvm.mk#L123-L125. I guess we should restrict

Yggdrasil/L/LLVM/common.jl

Lines 251 to 253 in e3d93c0

	if [[ ${target} == *linux* ]]; then # TODO only LLVM12
	CMAKE_FLAGS+=(-DLLVM_USE_INTEL_JITEVENTS=1)
	fi

to Intel architectures?

[giordano]

Based on https://www.intel.com/content/www/us/en/developer/articles/system-requirements/vtune-profiler-system-requirements.html VTune is compatible only with x86_64, not even 32-bit systems (unless I'm missing something). Edit: I opened JuliaLang/julia#56964 to disable LLVM_USE_INTEL_JITEVENTS on non-x86_64 architectures.

[giordano]

Progress: lib/libLLVM.so.19.1jl is now linked correctly, but we've got a different linking error, this time while building bin/clang-fuzzer-dictionary:

[16:03:09] [7199/7958] : && /opt/bin/riscv64-linux-gnu-libgfortran5-cxx11/riscv64-linux-gnu-gcc --sysroot=/opt/riscv64-linux-gnu/riscv64-linux-gnu/sys-root/ -fPIC -fno-semantic-interposition -Werror=date-time -fno-lifetime-dse -Wall -Wextra -Wno-unused-parameter -Wwrite-strings -Wcast-qual -Wno-missing-field-initializers -pedantic -Wno-long-long -Wimplicit-fallthrough -Wno-comment -fdiagnostics-color -ffunction-sections -fdata-sections -O3 -DNDEBUG -Wl,-rpath-link,/workspace/build/./lib  -Wl,--gc-sections tools/clang/tools/clang-fuzzer/dictionary/CMakeFiles/clang-fuzzer-dictionary.dir/dictionary.c.o -o bin/clang-fuzzer-dictionary  -Wl,-rpath,"\$ORIGIN/../lib:/workspace/build/lib"  lib/libLLVM.so.19.1jl && :
[...]
[16:03:10] ninja: job failed: : && /opt/bin/riscv64-linux-gnu-libgfortran5-cxx11/riscv64-linux-gnu-gcc --sysroot=/opt/riscv64-linux-gnu/riscv64-linux-gnu/sys-root/ -fPIC -fno-semantic-interposition -Werror=date-time -fno-lifetime-dse -Wall -Wextra -Wno-unused-parameter -Wwrite-strings -Wcast-qual -Wno-missing-field-initializers -pedantic -Wno-long-long -Wimplicit-fallthrough -Wno-comment -fdiagnostics-color -ffunction-sections -fdata-sections -O3 -DNDEBUG -Wl,-rpath-link,/workspace/build/./lib  -Wl,--gc-sections tools/clang/tools/clang-fuzzer/dictionary/CMakeFiles/clang-fuzzer-dictionary.dir/dictionary.c.o -o bin/clang-fuzzer-dictionary  -Wl,-rpath,"\$ORIGIN/../lib:/workspace/build/lib"  lib/libLLVM.so.19.1jl && :
[16:03:10] /opt/riscv64-linux-gnu/bin/../lib/gcc/riscv64-linux-gnu/13.2.0/../../../../riscv64-linux-gnu/bin/ld: warning: libstdc++.so.6, needed by lib/libLLVM.so.19.1jl, not found (try using -rpath or -rpath-link)
[16:03:10] /opt/riscv64-linux-gnu/bin/../lib/gcc/riscv64-linux-gnu/13.2.0/../../../../riscv64-linux-gnu/bin/ld: lib/libLLVM.so.19.1jl: undefined reference to `std::ctype<char>::_M_widen_init() const@GLIBCXX_3.4.11'
[16:03:10] /opt/riscv64-linux-gnu/bin/../lib/gcc/riscv64-linux-gnu/13.2.0/../../../../riscv64-linux-gnu/bin/ld: lib/libLLVM.so.19.1jl: undefined reference to `operator new(unsigned long)@GLIBCXX_3.4'

I guess the issue is that gcc is being used instead of g++, but don't know why. Feels like an issue with the build system though.

[giordano]

Couple of observations:

• gcc is used also when building that executable for x86_64
• I wonder if the compiler is inferred from the extension (it's .c, not .cpp): https://github.com/llvm/llvm-project/blob/6f28b4b5e960e1c4eeebad18b48e667df1e806a8/clang/tools/clang-fuzzer/dictionary/CMakeLists.txt#L3

[giordano]

Mumble mumble mumble, I bet the problem is https://github.com/JuliaPackaging/BinaryBuilderBase.jl/blob/4d0883a222bcb60871f8e24e56ef6e322502ec80/src/Runner.jl#L553-L559 + #10132 (comment): our compiler wrappers expect compiler libraries in the lib64 directory for 64-bit platforms, but because of a typo they ended up in lib for riscv64. We can work around this issue in BBB for the time being.

[giordano]

It's working!

[Zentrik]

Thanks for debugging and getting this working.

[vchuravy]

Congratulations!