c-index-test linking fail on linux: /usr/bin/ld: /home/xzx/llvm/Debug/bin/c-index-test: local symbol `clang::driver::Arg::getAsString(clang::driver::ArgList const&) const' in /home/xzx/llvm/Debug/lib/libclangDriver.a(Arg.o) is referenced by DSO /usr/bin/ld: final link failed: Nonrepresentable section on output