Disregard the Python errors, that was because of me. (The warnings remain, though.)
Le 2013-11-23 à 11:58:33, Félix Cloutier <[email protected]> a écrit : > Right, I forgot to delete llvm-build. > > I deleted llvm-build and made a clean build, but now I get different linker > errors. First, I get about 50 warnings that there is direct access to several > weak symbols from lldb-platform: > > ld: warning: direct access in (anonymous > namespace)::ASTInfoCollector::ReadLanguageOptions(clang::LangOptions const&, > bool) to global weak symbol > llvm::IntrusiveRefCntPtr<clang::TargetInfo>::getPtr() const means the weak > symbol cannot be overridden at runtime. This was likely caused by different > translation units being compiled with different visibility settings. > ld: warning: direct access in (anonymous > namespace)::ASTInfoCollector::ReadTargetOptions(clang::TargetOptions const&, > bool) to global weak symbol > llvm::IntrusiveRefCntPtr<clang::TargetInfo>::getPtr() const means the weak > symbol cannot be overridden at runtime. This was likely caused by different > translation units being compiled with different visibility settings. > ld: warning: direct access in (anonymous > namespace)::ASTInfoCollector::ReadTargetOptions(clang::TargetOptions const&, > bool) to global weak symbol > llvm::IntrusiveRefCntPtr<clang::TargetInfo>::getPtr() const means the weak > symbol cannot be overridden at runtime. This was likely caused by different > translation units being compiled with different visibility settings. > [...] > > lldb-platform still compiles (although this looks very odd), but the LLDB > framework doesn't compile because symbols used by LLDBWrapPython.cpp are > apparently not found (54 of them): > > "lldb::SBDebugger::GetSummaryForType(lldb::SBTypeNameSpecifier)", > referenced from: > __wrap_SBDebugger_GetSummaryForType in LLDBWrapPython.o > "lldb::SBDebugger::GetSyntheticForType(lldb::SBTypeNameSpecifier)", > referenced from: > __wrap_SBDebugger_GetSyntheticForType in LLDBWrapPython.o > "lldb::SBTypeSummary::GetOptions()", referenced from: > __wrap_SBTypeSummary_GetOptions in LLDBWrapPython.o > "lldb::SBTypeSummary::SetOptions(unsigned int)", referenced from: > __wrap_SBTypeSummary_SetOptions in LLDBWrapPython.o > "lldb::SBTypeSummary::GetDescription(lldb::SBStream&, > lldb::DescriptionLevel)", referenced from: > __wrap_SBTypeSummary_GetDescription in LLDBWrapPython.o > lldb_SBTypeSummary___str__(lldb::SBTypeSummary*) in LLDBWrapPython.o > [...] > > Any idea? > > Le 2013-11-23 à 00:05:34, Jason Molenda <[email protected]> a écrit : > >> I added --enable-cxx11 to build-llvm.pl, removed my existing llvm-build >> directory, did a clean build with Xcode and I got a successful link. >> >> The problem came up due to the changes in r195239. When included in C++11 >> mode, SmallPtrSet.h calls a method in SmallPtrSet.cpp (in llvm). llvm was >> being built in C++03 mode so the additional method wasn't emitted for >> SmallPtrSet.o; lldb included SmallPtrSet.h in C++11 mode so a reference to >> that function was emitted. >> >> (just to state the obvious - I'm sure we were all on the same page here) >> >> >> >> On Nov 22, 2013, at 6:42 PM, Félix Cloutier <[email protected]> wrote: >> >>> I'm building from Xcode, so I guess I need to change scripts/build-llvm.pl. >>> Xcode reports this when I build: >>> >>> % cd >>> '/Users/felix/Projets/OpenSource/lldb/llvm-build/Release+Asserts/x86_64' && >>> '/Users/felix/Projets/OpenSource/lldb/llvm/configure' >>> --enable-targets=x86_64,arm --disable-terminfo --enable-cxx11 >>> --enable-optimized --enable-assertions --enable-libcpp >>> --build=x86_64-apple-darwin11 >>> >>> --enable-cxx11 is there, but even with that build completing successfully I >>> still get the same error. >>> >>> Félix >>> >>> Le 2013-11-22 à 04:15:21, Arnaud A. de Grandmaison <[email protected]> >>> a écrit : >>> >>>> On 11/22/2013 07:56 AM, Félix Cloutier wrote: >>>>> Hello people, >>>>> >>>>> I got the lldb source fresh from SVN, and even after doing the little >>>>> Python dance for Mavericks (setting SDKROOT to macosx10.8 like Jason >>>>> Molenda suggested yesterday), I still get compile errors. The linker >>>>> bails out with this when it tries to link lldb-platform: >>>>> >>>>> Undefined symbols for architecture x86_64: >>>>> "llvm::SmallPtrSetImpl::SmallPtrSetImpl(void const**, unsigned int, >>>>> llvm::SmallPtrSetImpl&&)", referenced from: >>>>> llvm::SmallPtrSet<DWARFDebugInfoEntry const*, >>>>> 4u>::SmallPtrSet(llvm::SmallPtrSet<DWARFDebugInfoEntry const*, 4u>&&) in >>>>> liblldb-core.a(SymbolFileDWARF.o) >>>>> ld: symbol(s) not found for architecture x86_64 >>>>> clang: error: linker command failed with exit code 1 (use -v to see >>>>> invocation) >>>>> >>>>> Looking deeper, I found that it is declared like that: >>>>> >>>>> #if LLVM_HAS_RVALUE_REFERENCES >>>>> SmallPtrSetImpl(const void **SmallStorage, unsigned SmallSize, >>>>> SmallPtrSetImpl &&that); >>>>> #endif >>>>> >>>>> Could it be that llvm is built without LLVM_HAS_RVALUE_REFERENCES but >>>>> lldb is built with it? >>>>> >>>> >>>> Hi Felix, >>>> >>>> I also got this problem. It comes from the fact that lldb is built in >>>> c++11 mode (required), whereas your llvm codebase is built without. You >>>> should compile llvm in c++11 as well, or some functions will simply not be >>>> in the libraries. >>>> >>>> If your are using cmake, I submitted (but diid not commit) a patch to >>>> optionally enable c++11 building with cmake a few hours ago on the >>>> llvm-commit list. For an autoconf build, there is an --enable-cxx11 to >>>> configure. >>>> >>>> Cheers, >>>> -- >>>> Arnaud >>>> >>>>> Félix >>>>> >>>>> >>>>> _______________________________________________ >>>>> lldb-dev mailing list >>>>> >>>>> [email protected] >>>>> http://lists.cs.uiuc.edu/mailman/listinfo/lldb-dev >>>> >>>> >>>> -- >>>> Arnaud A. de Grandmaison >>>> >>> >>> _______________________________________________ >>> lldb-dev mailing list >>> [email protected] >>> http://lists.cs.uiuc.edu/mailman/listinfo/lldb-dev >> >
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