[llvm-dev] [help] Kaleidoscope build fails after llvm-3.8

Tue Feb 16 08:56:08 PST 2016

On 16 February 2016 at 15:33, vivek pandya <vivekvpandya at gmail.com> wrote:

>
>
> *Vivek Pandya*
>
>
> On Tue, Feb 16, 2016 at 8:47 PM, mats petersson <mats at planetcatfish.com>
> wrote:
>
>> (Replying to llvm-dev as well - it is part of the normal mailing-list
>> etiquette to reply-all, so that replies go to list as well as the
>> individual - then others can see the replies and any follow up)
>>
>> So, I tried the chapter8/toy.cpp from release_38, and it works on my
>> setup [I didn't rebuild the compiler, I used mine, built from sources with
>> changes from February 5th.
>>
>> I think you need to do some clang++ -v to see that it actually links to
>> the things you think it will link with, for example. My best guess is that
>> there is another LLVM installation and the linker finds the wrong one.
>> Could of course be many other things wrong too, it's just a guess.
>>
>
> Yes Mats, noted the advice.
>
> My clang commands maps to v 7.0 through Xcode's toolchain which is not
> updated also it uses same version of ld. but when I tried with clang-3.8
> explicitly it did not link libclang_rt.osx.a but Xcode tool chain tries for
> that too. Do I need to build compiler-rt along with llvm 3.8 ?
>

I don't do OSX development, but I'd say, yes you probably do.

--
Mats

> --
>> Mats
>>
>> On 16 February 2016 at 14:41, vivek pandya <vivekvpandya at gmail.com>
>> wrote:
>>
>>>
>>>
>>> *Vivek Pandya*
>>>
>>>
>>> On Tue, Feb 16, 2016 at 7:47 PM, mats petersson <mats at planetcatfish.com>
>>> wrote:
>>>
>>>> I should add that in my git version
>>>> 393c3c6b687d0d92a24afe888bca6995f41f381a chapter8/toy.cpp compiles with the
>>>> command you posted.
>>>>
>>>> --
>>>> Mats
>>>>
>>>> On 16 February 2016 at 14:15, mats petersson <mats at planetcatfish.com>
>>>> wrote:
>>>>
>>>>> Are you compiling the actual Kaleidoscope in the llvm 3.8 directory?
>>>>> Or a version from a different version of LLVM?
>>>>>
>>>> Hi Mats,
>>> Yes I am compiling Kaleidoscope in example folder it self on release_38
>>> branch.
>>> Apart from that my one other project which uses LLVM  is also not
>>> compiling ( it used to compile earlier )
>>> It fails with following :
>>> Undefined symbols for architecture x86_64:
>>>   "_LLVMInt128TypeInContext", referenced from:
>>>
>>> _D1d4llvm4type7TypeGen5visitMFE1d6common11builtintype11BuiltinTypeZPS4llvm1c5types16__LLVMOpaqueType
>>> in libd-llvm.a(libd-llvm.o)
>>> ld: symbol(s) not found for architecture x86_64
>>> clang: error: linker command failed with exit code 1 (use -v to see
>>> invocation)
>>>
>>> Vivek
>>>
>>>> --
>>>>> Mats
>>>>>
>>>>> On 16 February 2016 at 13:48, vivek pandya via llvm-dev <
>>>>> llvm-dev at lists.llvm.org> wrote:
>>>>>
>>>>>> Hello ,
>>>>>>
>>>>>> I have build llvm from release_38 branch ( only llvm and clang ) and
>>>>>> install it. My DYLD_LIBRARY_PATH points to installation-directory/lib.
>>>>>>
>>>>>> I am compiling example files for Kaleidoscope with following command :
>>>>>>
>>>>>> clang++ -g toy.cpp -std=c++11 `llvm-config --cxxflags --ldflags
>>>>>> --system-libs --libs core mcjit native` -O3 -o toy
>>>>>>
>>>>>> but it fails with following error:
>>>>>> Undefined symbols for architecture x86_64:
>>>>>>   "llvm::CmpInst::CmpInst(llvm::Type*, llvm::Instruction::OtherOps,
>>>>>> llvm::CmpInst::Predicate, llvm::Value*, llvm::Value*, llvm::Twine const&,
>>>>>> llvm::Instruction*)", referenced from:
>>>>>>       llvm::IRBuilder<true, llvm::ConstantFolder,
>>>>>> llvm::IRBuilderDefaultInserter<true>
>>>>>> >::CreateFCmp(llvm::CmpInst::Predicate, llvm::Value*, llvm::Value*,
>>>>>> llvm::Twine const&, llvm::MDNode*) in toy-1f302b.o
>>>>>>   "llvm::DIBuilder::createFunction(llvm::DIScope*, llvm::StringRef,
>>>>>> llvm::StringRef, llvm::DIFile*, unsigned int, llvm::DISubroutineType*,
>>>>>> bool, bool, unsigned int, unsigned int, bool,
>>>>>> llvm::MDTupleTypedArrayWrapper<llvm::DITemplateParameter>,
>>>>>> llvm::DISubprogram*)", referenced from:
>>>>>>       (anonymous namespace)::FunctionAST::codegen() in toy-1f302b.o
>>>>>>   "vtable for llvm::PHINode", referenced from:
>>>>>>       llvm::IRBuilder<true, llvm::ConstantFolder,
>>>>>> llvm::IRBuilderDefaultInserter<true> >::CreatePHI(llvm::Type*, unsigned
>>>>>> int, llvm::Twine const&) in toy-1f302b.o
>>>>>>   NOTE: a missing vtable usually means the first non-inline virtual
>>>>>> member function has no definition.
>>>>>> ld: symbol(s) not found for architecture x86_64
>>>>>> clang-3.8: error: linker command failed with exit code 1 (use -v to
>>>>>> see invocation)
>>>>>>
>>>>>> With previous version 3.8.0svn it used to build successfully. Can
>>>>>> someone help me what I am doing wrong ?
>>>>>>
>>>>>> Sincerely,
>>>>>> *Vivek Pandya*
>>>>>>
>>>>>>
>>>>>> _______________________________________________
>>>>>> LLVM Developers mailing list
>>>>>> llvm-dev at lists.llvm.org
>>>>>> http://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev
>>>>>>
>>>>>>
>>>>>
>>>>
>>>
>>
>
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