Mac OS build

[dieu]

Hey folks,

Glean is looking like a very interesting project, is anybody have a instruction for compilation for mac os?

currently, I stuck on the compilation of fbthrift

[ 15%] Linking CXX shared library ../../lib/libcompiler_base.dylib
Undefined symbols for architecture x86_64:
  "apache::thrift::compiler::gen::cpp::find_ref_type(apache::thrift::compiler::t_field const&)", referenced from:
      apache::thrift::compiler::(anonymous namespace)::validate_boxed_field_attributes(apache::thrift::compiler::diagnostic_context&, apache::thrift::compiler::t_field const&) in standard_validator.cc.o
  "apache::thrift::compiler::cpp2::has_ref_annotation(apache::thrift::compiler::t_field const&)", referenced from:
      apache::thrift::compiler::(anonymous namespace)::validate_ref_field_attributes(apache::thrift::compiler::diagnostic_context&, apache::thrift::compiler::t_field const&) in standard_validator.cc.o
  "apache::thrift::compiler::cpp2::is_mixin(apache::thrift::compiler::t_field const&)", referenced from:
      apache::thrift::compiler::(anonymous namespace)::validate_mixin_field_attributes(apache::thrift::compiler::diagnostic_context&, apache::thrift::compiler::t_field const&) in standard_validator.cc.o
      apache::thrift::compiler::(anonymous namespace)::get_mixin_type(apache::thrift::compiler::t_field const&) in standard_validator.cc.o
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
make[2]: *** [lib/libcompiler_base.1.0.0.dylib] Error 1
make[1]: *** [thrift/compiler/CMakeFiles/compiler_base.dir/all] Error 2
make[1]: *** Waiting for unfinished jobs....