Bazel build is broken on macOS #17649
Description
What version of gRPC and what language are you using?
Clone from master.
What operating system (Linux, Windows, …) and version?
macOS 10.13.6
What runtime / compiler are you using (e.g. python version or version of gcc)
Xcode 10.1
What did you do?
In the workspace directory, run bazel build :all.
What did you expect to see?
Successful build.
What did you see instead?
An error in one of the external C dependencies:
ERROR: /private/var/tmp/_bazel_allevato/09be068f3a9c91bfcb2786dd3fddded0/external/com_github_cares_cares/BUILD.bazel:65:1: C++ compilation of rule '@com_github_cares_cares//:ares' failed (Exit 1) wrapped_clang failed: error executing command external/local_config_cc/wrapped_clang '-D_FORTIFY_SOURCE=1' -fstack-protector -fcolor-diagnostics -Wall -Wthread-safety -Wself-assign -fno-omit-frame-pointer -O0 -DDEBUG -iquote ... (remaining 36 argument(s) skipped)
Use --sandbox_debug to see verbose messages from the sandbox
external/com_github_cares_cares/ares_process.c:198:10: error: use of undeclared identifier 'MSG_NOSIGNAL'
return swrite(s, data, len);
^
external/com_github_cares_cares/setup_once.h:204:54: note: expanded from macro 'swrite'
(SEND_TYPE_ARG4)(SEND_4TH_ARG))
^
external/com_github_cares_cares/setup_once.h:126:22: note: expanded from macro 'SEND_4TH_ARG'
#define SEND_4TH_ARG MSG_NOSIGNAL
^
1 error generated.