[BUILD] Opentelemetry C++20 extension causes Envoy build issue

[shiponcs]

Title: [BUILD] Opentelemetry C++20 extension causes Envoy build issue

Description:
Envoy build failed because of Opentelemetry C++20 requirement.

$ bazel build envoy
ERROR: /source/source/extensions/tracers/opentelemetry/BUILD:14:19: Compiling source/extensions/tracers/opentelemetry/config.cc failed: (Exit 1): clang-14 failed: error executing command (from target //source/extensions/tracers/opentelemetry:config) /opt/llvm/bin/clang-14 -U_FORTIFY_SOURCE -fstack-protector -Wall -Wthread-safety -Wself-assign -Wunused-but-set-parameter -Wno-free-nonheap-object -fcolor-diagnostics -fno-omit-frame-pointer ... (remaining 239 arguments skipped)

Use --sandbox_debug to see verbose messages from the sandbox and retain the sandbox build root for debugging
In file included from source/extensions/tracers/opentelemetry/config.cc:8:
In file included from ./source/extensions/tracers/opentelemetry/opentelemetry_tracer_impl.h:17:
In file included from bazel-out/k8-fastbuild/bin/external/io_opentelemetry_cpp/api/_virtual_includes/api/opentelemetry/logs/provider.h:10:
In file included from bazel-out/k8-fastbuild/bin/external/io_opentelemetry_cpp/api/_virtual_includes/api/opentelemetry/logs/noop.h:11:
In file included from bazel-out/k8-fastbuild/bin/external/io_opentelemetry_cpp/api/_virtual_includes/api/opentelemetry/logs/event_logger.h:7:
bazel-out/k8-fastbuild/bin/external/io_opentelemetry_cpp/api/_virtual_includes/api/opentelemetry/logs/logger.h:261:5: error: use of the 'likely' attribute is a C++20 extension [-Werror,-Wc++20-attribute-extensions]
    OPENTELEMETRY_LIKELY_IF(Enabled(severity) == false) { return false; }
    ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
bazel-out/k8-fastbuild/bin/external/io_opentelemetry_cpp/api/_virtual_includes/api/opentelemetry/common/macros.h:12:11: note: expanded from macro 'OPENTELEMETRY_LIKELY_IF'
        [[likely]]
        ~~^~~~~~~~
In file included from source/extensions/tracers/opentelemetry/config.cc:8:
In file included from ./source/extensions/tracers/opentelemetry/opentelemetry_tracer_impl.h:17:
In file included from bazel-out/k8-fastbuild/bin/external/io_opentelemetry_cpp/api/_virtual_includes/api/opentelemetry/logs/provider.h:10:
In file included from bazel-out/k8-fastbuild/bin/external/io_opentelemetry_cpp/api/_virtual_includes/api/opentelemetry/logs/noop.h:11:
In file included from bazel-out/k8-fastbuild/bin/external/io_opentelemetry_cpp/api/_virtual_includes/api/opentelemetry/logs/event_logger.h:7:
bazel-out/k8-fastbuild/bin/external/io_opentelemetry_cpp/api/_virtual_includes/api/opentelemetry/logs/logger.h:267:5: error: use of the 'likely' attribute is a C++20 extension [-Werror,-Wc++20-attribute-extensions]
    OPENTELEMETRY_LIKELY_IF(Enabled(severity) == false) { return false; }
    ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
bazel-out/k8-fastbuild/bin/external/io_opentelemetry_cpp/api/_virtual_includes/api/opentelemetry/common/macros.h:12:11: note: expanded from macro 'OPENTELEMETRY_LIKELY_IF'
        [[likely]]
        ~~^~~~~~~~
2 errors generated.
Target //source/exe:envoy-static failed to build
Use --verbose_failures to see the command lines of failed build steps.
INFO: Elapsed time: 2625.963s, Critical Path: 76.06s
INFO: 14619 processes: 6232 internal, 1 local, 8385 processwrapper-sandbox, 1 worker.
FAILED: Build did NOT complete successfully

Upstream issue: open-telemetry/opentelemetry-cpp#2572

[mattklein123]

cc @kyessenov who is looking into C++20 issues.

[kyessenov]

We just switched to C++20 for most builds. Can you try again?

[shiponcs]

@kyessenov thanks. It worked.

[github-actions]

This issue has been automatically marked as stale because it has not had activity in the last 30 days. It will be closed in the next 7 days unless it is tagged "help wanted" or "no stalebot" or other activity occurs. Thank you for your contributions.