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

[Jack Howarth via llvm-dev]

On Tue, May 24, 2016 at 1:22 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.

>
>>
>> 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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