[PATCH] D84947: Add libFuzzer shared object build output

[Matt Morehouse via Phabricator via llvm-commits]

morehouse added a comment.

When I patch this in locally and run `ninja check-fuzzer`, I get a linking error for both i386 and x86_64:

  FAILED: lib/clang/12.0.0/lib/linux/libclang_rt.fuzzer_no_main-i386.so                                                          
  ...
  /usr/bin/ld: projects/compiler-rt/lib/fuzzer/CMakeFiles/RTfuzzer.i386.dir/FuzzerDriver.cpp.o: in function `fuzzer::FuzzerDriver(int*, char***, int (*)(unsigned char const*, unsigned int))':
  /usr/bin/../lib/gcc/x86_64-linux-gnu/9/../../../../include/c++/9/thread:130: undefined reference to `pthread_create'           
  /usr/bin/ld: /usr/bin/../lib/gcc/x86_64-linux-gnu/9/../../../../include/c++/9/thread:130: undefined reference to `pthread_create'
  /usr/bin/ld: projects/compiler-rt/lib/fuzzer/CMakeFiles/RTfuzzer.i386.dir/FuzzerFork.cpp.o: in function `fuzzer::FuzzWithFork(fuzzer::Random&, fuzzer::FuzzingOptions const&, std::vector<std::__cxx11::basic_stri
  ng<char, std::char_traits<char>, std::allocator<char> >, fuzzer::fuzzer_allocator<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > > > const&, std::vector<std::__cxx11::basic_stri
  ng<char, std::char_traits<char>, std::allocator<char> >, fuzzer::fuzzer_allocator<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > > > const&, int)':
  /usr/local/google/home/mascasa/code/llvm-project/compiler-rt/lib/fuzzer/FuzzerFork.cpp:(.text+0xd6d): undefined reference to `pthread_create'
  clang: error: linker command failed with exit code 1 (use -v to see invocation)                                                
  [655/3462] Linking CXX shared library lib/clang/12.0.0/lib/linux/libclang_rt.fuzzer_no_main-x86_64.so                          
  
  
  FAILED: lib/clang/12.0.0/lib/linux/libclang_rt.fuzzer_no_main-x86_64.so                                                        
  ...                                                                           
  /usr/bin/ld: projects/compiler-rt/lib/fuzzer/CMakeFiles/RTfuzzer.x86_64.dir/FuzzerDriver.cpp.o: in function `fuzzer::FuzzerDriver(int*, char***, int (*)(unsigned char const*, unsigned long))':
  /usr/bin/../lib/gcc/x86_64-linux-gnu/9/../../../../include/c++/9/thread:130: undefined reference to `pthread_create'           
  /usr/bin/ld: /usr/bin/../lib/gcc/x86_64-linux-gnu/9/../../../../include/c++/9/thread:130: undefined reference to `pthread_create'
  /usr/bin/ld: /usr/bin/../lib/gcc/x86_64-linux-gnu/9/../../../../include/c++/9/thread:130: undefined reference to `pthread_create'
  /usr/bin/ld: projects/compiler-rt/lib/fuzzer/CMakeFiles/RTfuzzer.x86_64.dir/FuzzerFork.cpp.o: in function `fuzzer::FuzzWithFork(fuzzer::Random&, fuzzer::FuzzingOptions const&, std::vector<std::__cxx11::basic_st
  ring<char, std::char_traits<char>, std::allocator<char> >, fuzzer::fuzzer_allocator<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > > > const&, std::vector<std::__cxx11::basic_st
  ring<char, std::char_traits<char>, std::allocator<char> >, fuzzer::fuzzer_allocator<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > > > const&, int)':
  /usr/bin/../lib/gcc/x86_64-linux-gnu/9/../../../../include/c++/9/thread:130: undefined reference to `pthread_create'           

Ian, can you please take a look?


Repository:
  rG LLVM Github Monorepo

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https://reviews.llvm.org/D84947