grpc Mac bazel build fails because of thread-local, but make passes #4341
Description
Description of the problem / feature request / question:
I'm on the grpc/grpc project. We recently switched to using thread-local on one of our key structs. Although this project builds fine with make on Mac and Linux, it stopped building with bazel on Mac after we made this switch. Looking into it, it seems like tensorflow/serving also has the same issue.
If possible, provide a minimal example to reproduce the problem:
$ git clone [email protected]:grpc/grpc
$ cd grpc
$ bazel build //:grpc
Environment info
- Operating System: MacOS Sierra 10.12.6
- Bazel version (output of
bazel info release): release 0.8.1-homebrew
Have you found anything relevant by searching the web?
Related issues are tensorflow/serving#1 and grpc/grpc#13856
Anything else, information or logs or outputs that would be helpful?
$ bazel build --verbose_failures //:grpc
INFO: Analysed target //:grpc (0 packages loaded).
INFO: Found 1 target...
ERROR: /Users/vpai/Git/grpc/BUILD:224:1: Linking of rule '//:grpc' failed (Exit 1): cc_wrapper.sh failed: error executing command
(cd /private/var/tmp/_bazel_vpai/5285458b308b3aadd65cb54a5ac76b0c/execroot/com_github_grpc_grpc && \
exec env - \
APPLE_SDK_PLATFORM=MacOSX \
APPLE_SDK_VERSION_OVERRIDE=10.13 \
PATH=/Users/vpai/google-cloud-sdk/bin:/usr/local/git/current/bin:/usr/local/bin:/usr/bin:/bin:/usr/local/sbin:/usr/sbin:/sbin:/usr/local/go/bin \
TMPDIR=/var/folders/xd/2k15ssh10lz6088_k_2lddtw007xtq/T/ \
XCODE_VERSION_OVERRIDE=9.1.0 \
external/local_config_cc/cc_wrapper.sh -fobjc-link-runtime -Wl,-S -shared -o bazel-out/darwin-fastbuild/bin/libgrpc.so bazel-out/darwin-fastbuild/bin/_objs/grpc/src/core/lib/surface/init.o bazel-out/darwin-fastbuild/bin/_objs/grpc/src/core/plugin_registry/grpc_plugin_registry.o -pthread -headerpad_max_install_names -lc++ -no-canonical-prefixes -undefined dynamic_lookup)
Use --sandbox_debug to see verbose messages from the sandbox
clang: warning: argument unused during compilation: '-pthread' [-Wunused-command-line-argument]
ld: illegal thread local variable reference to regular symbol __ZN9grpc_core7ExecCtx9exec_ctx_E for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
Target //:grpc failed to build
INFO: Elapsed time: 0.504s, Critical Path: 0.31s
FAILED: Build did NOT complete successfully