ERROR: /home/runner/.cache/bazel/_bazel_runner/232997f8e2d32d79d849393f4fd56253/external/com_github_google_tcmalloc/tcmalloc/internal/BUILD:544:11: Compiling tcmalloc/internal/percpu.cc failed: (Exit 1): clang-11 failed: error executing command (from target @com_github_google_tcmalloc//tcmalloc/internal:percpu) /home/runner/work/envoy/envoy/bin/clang11/bin/clang-11 -U_FORTIFY_SOURCE -fstack-protector -Wall -Wthread-safety -Wself-assign -fcolor-diagnostics -fno-omit-frame-pointer '-stdlib=libc++' -MD -MF ... (remaining 33 arguments skipped)
external/com_github_google_tcmalloc/tcmalloc/internal/percpu.cc:57:5: error: variable does not have a constant initializer
    __rseq_abi = {
    ^            ~
external/com_github_google_tcmalloc/tcmalloc/internal/percpu.cc:56:1: note: required by 'require_constant_initialization' attribute here
ABSL_CONST_INIT thread_local ABSL_ATTRIBUTE_WEAK volatile kernel_rseq
^~~~~~~~~~~~~~~
external/com_google_absl/absl/base/attributes.h:714:27: note: expanded from macro 'ABSL_CONST_INIT'
#define ABSL_CONST_INIT [[clang::require_constant_initialization]]

Build command:
       sudo apt-get update --error-on=any
       sudo apt-get install --yes libtool cmake automake autoconf make ninja-build curl unzip virtualenv openjdk-11-jdk build-essential libc++1
       mkdir -p bin/clang11
       cd bin/clang11
       wget https://github.com/llvm/llvm-project/releases/download/llvmorg-11.0.1/clang+llvm-11.0.1-x86_64-linux-gnu-ubuntu-16.04.tar.xz
       tar -xf clang+llvm-11.0.1-x86_64-linux-gnu-ubuntu-16.04.tar.xz --strip-components 1
       export PATH=bin/clang11/bin:$PATH

bazelisk build -c fastbuild --spawn_strategy=local --discard_analysis_cache --nouse_action_cache --config clang --config libc++ $BUILD_TARGETS