0.47.1 fails to build on osx when gflags is installed via brew

[debris]

Is this a bug report?

yes

Have you read the Contributing Guidelines?

yes

Environment

10.12.6

1. react-native -v:
   react-native-cli: 2.0.1
   react-native: 0.47.1
2. node -v:
   v7.4.0
3. npm -v:
   5.2.0
4. yarn --version
   0.27.5

Then, specify:

building on iOS

Steps to Reproduce

react-native run-ios

(android works fine)

Expected Behavior

successful build

Actual Behavior

Undefined symbols for architecture x86_64:
  "google::FlagRegisterer::FlagRegisterer<std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > >(char const*, char const*, char const*, std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >*, std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >*)", referenced from:
      ___cxx_global_var_init.30 in libReact.a(logging.o)
      ___cxx_global_var_init.73 in libReact.a(logging.o)
      ___cxx_global_var_init.80 in libReact.a(logging.o)
      ___cxx_global_var_init.87 in libReact.a(logging.o)
      ___cxx_global_var_init.108 in libReact.a(logging.o)
      ___cxx_global_var_init.10 in libReact.a(vlog_is_on.o)
  "google::FlagRegisterer::FlagRegisterer<bool>(char const*, char const*, char const*, bool*, bool*)", referenced from:
      ___cxx_global_var_init.5 in libReact.a(logging.o)
      ___cxx_global_var_init.14 in libReact.a(logging.o)
      ___cxx_global_var_init.21 in libReact.a(logging.o)
      ___cxx_global_var_init.39 in libReact.a(logging.o)
      ___cxx_global_var_init.103 in libReact.a(logging.o)
      ___cxx_global_var_init.4 in libReact.a(utilities.o)
  "google::FlagRegisterer::FlagRegisterer<int>(char const*, char const*, char const*, int*, int*)", referenced from:
      ___cxx_global_var_init.24 in libReact.a(logging.o)
      ___cxx_global_var_init.46 in libReact.a(logging.o)
      ___cxx_global_var_init.53 in libReact.a(logging.o)
      ___cxx_global_var_init.60 in libReact.a(logging.o)
      ___cxx_global_var_init.67 in libReact.a(logging.o)
      ___cxx_global_var_init.96 in libReact.a(logging.o)
      ___cxx_global_var_init.3 in libReact.a(vlog_is_on.o)
      ...
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)

[debris]

Ok, so I investigated the issue further and it looks like the bug occurs only when you have gflags library installed on your operating system. I did:

brew uninstall gflags then cleaned the build directory and everything worked as expected

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Maybe the issue has been fixed in a recent release, or perhaps it is not affecting a lot of people. If you think this issue should definitely remain open, please let us know why. Thank you for your contributions.

[debris]

it's not fixed. it's still broken. sweeping the issues won't solve them