[cfe-dev] linking error when running libTooling tutorial

[Kristóf Umann via cfe-dev]

Try adding clangFrontend to target_link_libraries in CMakeLists.txt.

Lou Wynn via cfe-dev <cfe-dev at lists.llvm.org> ezt írta (időpont: 2018. okt.
22., H, 12:14):

> I followed the libTooling tutorial at here:
> http://clang.llvm.org/docs/LibASTMatchersTutorial.html to write the
> loop-convert program. When I built it, I got the following error (I used
> the unofficial monorepo to build clang):
>
>
> $ ninja loop-convert
> [1/1] Linking CXX executable bin/loop-convert
> FAILED: : && /usr/bin/clang++-6.0   -fPIC -fvisibility-inlines-hidden
> -Werror=date-time -Werror=unguarded-availability-new -std=c++11 -Wall
> -Wextra -Wno-unused-parameter -Wwrite-strings -Wcast-qual
> -Wmissing-field-initializers -pedantic -Wno-long-long
> -Wcovered-switch-default -Wno-noexcept-type -Wnon-virtual-dtor
> -Wdelete-non-virtual-dtor -Wstring-conversion -fdiagnostics-color
> -fno-common -Woverloaded-virtual -Wno-nested-anon-types -g
> -fuse-ld=lld-6.0 -Wl,--color-diagnostics -Wl,-allow-shlib-undefined
> tools/clang/tools/extra/loop-convert/CMakeFiles/loop-convert.dir/LoopConvert.cpp.o
> -o bin/loop-convert  lib/libLLVMSupport.so.8svn -lpthread
> lib/libclangTooling.so.8svn lib/libclangBasic.so.8svn
> lib/libclangASTMatchers.so.8svn -Wl,-rpath,"\$ORIGIN/../lib" && :
> /usr/bin/ld.lld-6.0: error: undefined symbol:
> clang::PCHContainerOperations::PCHContainerOperations()
> >>> referenced by new_allocator.h:120
> (/usr/bin/../lib/gcc/x86_64-linux-gnu/5.4.0/../../../../include/c++/5.4.0/ext/new_allocator.h:120)
> >>>
> tools/clang/tools/extra/loop-convert/CMakeFiles/loop-convert.dir/LoopConvert.cpp.o:(void
> __gnu_cxx::new_allocator<clang::PCHContainerOperations>::construct<clang::PCHContainerOperations>(clang::PCHContainerOperations*))
>
> /usr/bin/ld.lld-6.0: error: undefined symbol: vtable for
> clang::SyntaxOnlyAction
> >>> referenced by FrontendActions.h:158
> (/home/lu/work/git-repos/llvm-mono/llvm-project/clang/include/clang/Frontend/FrontendActions.h:158)
> >>>
> tools/clang/tools/extra/loop-convert/CMakeFiles/loop-convert.dir/LoopConvert.cpp.o:(clang::SyntaxOnlyAction::SyntaxOnlyAction())
>
> /usr/bin/ld.lld-6.0: error: undefined symbol:
> clang::FrontendAction::FrontendAction()
> >>> referenced by FrontendAction.h:253
> (/home/lu/work/git-repos/llvm-mono/llvm-project/clang/include/clang/Frontend/FrontendAction.h:253)
> >>>
> tools/clang/tools/extra/loop-convert/CMakeFiles/loop-convert.dir/LoopConvert.cpp.o:(clang::ASTFrontendAction::ASTFrontendAction())
>
> /usr/bin/ld.lld-6.0: error: undefined symbol: vtable for
> clang::ASTFrontendAction
> >>> referenced by FrontendAction.h:253
> (/home/lu/work/git-repos/llvm-mono/llvm-project/clang/include/clang/Frontend/FrontendAction.h:253)
> >>>
> tools/clang/tools/extra/loop-convert/CMakeFiles/loop-convert.dir/LoopConvert.cpp.o:(clang::ASTFrontendAction::ASTFrontendAction())
> clang: error: linker command failed with exit code 1 (use -v to see
> invocation)
> ninja: build stopped: subcommand failed.
>
>
> Can anyone point me to the right direction to fix it?
>
> Thanks.
>
> --
> Love,
> Lou
>
>
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