[llvm-dev] [RFC] better link error messages

Rafael Espíndola via llvm-dev
Wed, 29 Mar 2017 20:47:30 -0000

I am late on the thread, but I just want to say that the new format
looks awesome!

Thanks,
Rafael


On 29 March 2017 at 15:18, Rui Ueyama via llvm-dev
<llvm-dev at lists.llvm.org> wrote:
> My bad. I intended this.
>
> Undefined symbol error:
>
> bin/ld.lld: error: undefined symbol:
>
lld::elf::EhFrameSection<llvm::object::ELFType<(llvm::support::endianness)0,
> true>
>>>> Referenced by Writer.cpp:207
(/ssd/llvm-project/lld/ELF/Writer.cpp:207)
>>>>               Writer.cpp.o in archive lib/liblldELF.a
>
>
> Duplicate symbol error:
>
> bin/ld.lld: error: duplicate symbol:
> lld::elf::MipsGotSection::addEntry(lld::elf::SymbolBody&, long,
> lld::elf::RelExpr)
>>>> defined at Writer.cpp:38
>>>>
(/home/buildslave/buildslave/clang-cmake-aarch64-39vma/llvm/tools/lld/ELF/Writer.cpp:38)
>>>>            Writer.cpp.o in archive lib/liblldELF.a
>>>> defined at SyntheticSections.cpp:673
>>>>
(/home/buildslave/buildslave/clang-cmake-aarch64-39vma/llvm/tools/lld/ELF/SyntheticSections.cpp:673)
>>>>            SyntheticSections.cpp.o in archive lib/liblldELF.a
>
>
> On Wed, Mar 29, 2017 at 12:12 PM, Jonathan Roelofs
> <jonathan at codesourcery.com> wrote:
>>
>>
>>
>> On 3/29/17 12:53 PM, Rui Ueyama via llvm-dev wrote:
>>>
>>> Put it all together, the following error messages should work for
>>> everybody. I'll create a patch to make this change and send it
for
>>> review. Thank you guys for the inputs!
>>>
>>>
>>> Undefined symbol error:
>>>
>>> bin/ld.lld: error: undefined symbol:
>>>
>>>
lld::elf::EhFrameSection<llvm::object::ELFType<(llvm::support::endianness)0,
>>> true>
>>> *>>> defined at* Writer.cpp:207
>>> (/ssd/llvm-project/lld/ELF/Writer.cpp:207)
>>> *>>>*            Writer.cpp.o in archive lib/liblldELF.a
>>
>>
>> The wording of this one is mildly self contradictory. Undefined symbols
>> aren't defined, they're... used? referenced?
>>
>>
>> Jon
>>
>>>
>>>
>>> Duplicate symbol error:
>>>
>>> bin/ld.lld: error: duplicate symbol:
>>> lld::elf::MipsGotSection::addEntry(lld::elf::SymbolBody&, long,
>>> lld::elf::RelExpr)
>>> *>>> defined at* Writer.cpp:38
>>>
>>>
(/home/buildslave/buildslave/clang-cmake-aarch64-39vma/llvm/tools/lld/ELF/Writer.cpp:38)
>>> *>>>*            Writer.cpp.o in archive lib/liblldELF.a
>>> *>>> defined at* SyntheticSections.cpp:673
>>>
>>>
(/home/buildslave/buildslave/clang-cmake-aarch64-39vma/llvm/tools/lld/ELF/SyntheticSections.cpp:673)
>>> *>>>*            SyntheticSections.cpp.o in archive
lib/liblldELF.a
>>>
>>>
>>
>>
>> --
>> Jon Roelofs
>> jonathan at codesourcery.com
>> CodeSourcery / Mentor Embedded
>
>
>
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