[llvm-dev] Undefined symbols in llvm-objdump linkage on x86_64-apple-darwin15

[Jack Howarth via llvm-dev]

On Tue, May 24, 2016 at 1:24 PM, Jack Howarth
<howarth.mailing.lists at gmail.com> wrote:
> On Tue, May 24, 2016 at 1:22 PM, Jack Howarth
> <howarth.mailing.lists at gmail.com> wrote:
>> On Tue, May 24, 2016 at 12:08 PM, Reid Kleckner <rnk at google.com> wrote:
>>> Kevin Enderby added those symbol uses in r270491. It has a cmake
>>> feature test, and all the uses of those symbols appear bracketed in
>>> HAVE_LIBXAR, so I don't know what went wrong for you.
>>
>> The trigger for this build failure is the usage of
>> -DLLVM_BUILD_EXTERNAL_COMPILER_RT:BOOL=ON. If I drop that cmake
>> option, the linkage failure for llvm-objdump disappears.
>
> Wrong cmake option. I meant to say that -DLLVM_LINK_LLVM_DYLIB:BOOL=ON
> is the trigger of the build failure. Sorry for the noise there.

Filed as https://llvm.org/bugs/show_bug.cgi?id=27855

>
>>
>>>
>>> On Tue, May 24, 2016 at 8:07 AM, Jack Howarth via llvm-dev
>>> <llvm-dev at lists.llvm.org> wrote:
>>>> Is anyone else seeing a bootstrap failure on x86_64-apple-darwin15 in
>>>> current trunk?
>>>>
>>>> [ 95%] Linking CXX executable ../../bin/llvm-objdump
>>>> Undefined symbols for architecture x86_64:
>>>>   "_xar_serialize", referenced from:
>>>>       DumpBitcodeSection(llvm::object::MachOObjectFile*, char const*,
>>>> unsigned int, bool, bool, bool, std::__1::basic_string<char,
>>>> std::__1::char_traits<char>, std::__1::allocator<char> >) in
>>>> MachODump.cpp.o
>>>>   "_xar_file_first", referenced from:
>>>>       DumpBitcodeSection(llvm::object::MachOObjectFile*, char const*,
>>>> unsigned int, bool, bool, bool, std::__1::basic_string<char,
>>>> std::__1::char_traits<char>, std::__1::allocator<char> >) in
>>>> MachODump.cpp.o
>>>>   "_xar_iter_new", referenced from:
>>>>       DumpBitcodeSection(llvm::object::MachOObjectFile*, char const*,
>>>> unsigned int, bool, bool, bool, std::__1::basic_string<char,
>>>> std::__1::char_traits<char>, std::__1::allocator<char> >) in
>>>> MachODump.cpp.o
>>>>   "_xar_prop_first", referenced from:
>>>>       DumpBitcodeSection(llvm::object::MachOObjectFile*, char const*,
>>>> unsigned int, bool, bool, bool, std::__1::basic_string<char,
>>>> std::__1::char_traits<char>, std::__1::allocator<char> >) in
>>>> MachODump.cpp.o
>>>>   "_xar_extract_tobuffersz", referenced from:
>>>>       DumpBitcodeSection(llvm::object::MachOObjectFile*, char const*,
>>>> unsigned int, bool, bool, bool, std::__1::basic_string<char,
>>>> std::__1::char_traits<char>, std::__1::allocator<char> >) in
>>>> MachODump.cpp.o
>>>>   "_xar_open", referenced from:
>>>>       DumpBitcodeSection(llvm::object::MachOObjectFile*, char const*,
>>>> unsigned int, bool, bool, bool, std::__1::basic_string<char,
>>>> std::__1::char_traits<char>, std::__1::allocator<char> >) in
>>>> MachODump.cpp.o
>>>>   "_xar_prop_get", referenced from:
>>>>       DumpBitcodeSection(llvm::object::MachOObjectFile*, char const*,
>>>> unsigned int, bool, bool, bool, std::__1::basic_string<char,
>>>> std::__1::char_traits<char>, std::__1::allocator<char> >) in
>>>> MachODump.cpp.o
>>>>   "_xar_close", referenced from:
>>>>       DumpBitcodeSection(llvm::object::MachOObjectFile*, char const*,
>>>> unsigned int, bool, bool, bool, std::__1::basic_string<char,
>>>> std::__1::char_traits<char>, std::__1::allocator<char> >) in
>>>> MachODump.cpp.o
>>>>   "_xar_prop_next", referenced from:
>>>>       DumpBitcodeSection(llvm::object::MachOObjectFile*, char const*,
>>>> unsigned int, bool, bool, bool, std::__1::basic_string<char,
>>>> std::__1::char_traits<char>, std::__1::allocator<char> >) in
>>>> MachODump.cpp.o
>>>>   "_xar_iter_free", referenced from:
>>>>       DumpBitcodeSection(llvm::object::MachOObjectFile*, char const*,
>>>> unsigned int, bool, bool, bool, std::__1::basic_string<char,
>>>> std::__1::char_traits<char>, std::__1::allocator<char> >) in
>>>> MachODump.cpp.o
>>>>   "_xar_file_next", referenced from:
>>>>       DumpBitcodeSection(llvm::object::MachOObjectFile*, char const*,
>>>> unsigned int, bool, bool, bool, std::__1::basic_string<char,
>>>> std::__1::char_traits<char>, std::__1::allocator<char> >) in
>>>> MachODump.cpp.o
>>>> ld: symbol(s) not found for architecture x86_64
>>>> clang: error: linker command failed with exit code 1 (use -v to see invocation)
>>>> tools/llvm-objdump/CMakeFiles/llvm-objdump.dir/build.make:173: recipe
>>>> for target 'bin/llvm-objdump' failed
>>>> make[2]: *** [bin/llvm-objdump] Error 1
>>>> make[2]: Target 'tools/llvm-objdump/CMakeFiles/llvm-objdump.dir/build'
>>>> not remade because of errors.
>>>> CMakeFiles/Makefile2:21861: recipe for target
>>>> 'tools/llvm-objdump/CMakeFiles/llvm-objdump.dir/all' failed
>>>> make[1]: *** [tools/llvm-objdump/CMakeFiles/llvm-objdump.dir/all] Error 2
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