Generate compilation database failed due to failed to compile unicode icu

```
make[2]: Entering directory '/build/.cache/bazel/_bazel_envoybuild/b570b5ccd0454dc9af9f65ab1833764d/sandbox/processwrapper-sandbox/2/execroot/envoy/bazel-out/k8-fastbuild/bin/bazel/foreign_cc/unicode_icu_build.build_tmpdir/tools/makeconv'
(deps) /build/.cache/bazel/_bazel_envoybuild/b570b5ccd0454dc9af9f65ab1833764d/sandbox/processwrapper-sandbox/2/execroot/envoy/external/com_github_unicode_org_icu/icu4c/source/tools/makeconv/ucnvstat.c
(deps) /build/.cache/bazel/_bazel_envoybuild/b570b5ccd0454dc9af9f65ab1833764d/sandbox/processwrapper-sandbox/2/execroot/envoy/external/com_github_unicode_org_icu/icu4c/source/tools/makeconv/makeconv.cpp
(deps) /build/.cache/bazel/_bazel_envoybuild/b570b5ccd0454dc9af9f65ab1833764d/sandbox/processwrapper-sandbox/2/execroot/envoy/external/com_github_unicode_org_icu/icu4c/source/tools/makeconv/genmbcs.cpp
(deps) /build/.cache/bazel/_bazel_envoybuild/b570b5ccd0454dc9af9f65ab1833764d/sandbox/processwrapper-sandbox/2/execroot/envoy/external/com_github_unicode_org_icu/icu4c/source/tools/makeconv/gencnvex.c
gcc ... /build/.cache/bazel/_bazel_envoybuild/b570b5ccd0454dc9af9f65ab1833764d/sandbox/processwrapper-sandbox/2/execroot/envoy/external/com_github_unicode_org_icu/icu4c/source/tools/makeconv/gencnvex.c
gcc ... /build/.cache/bazel/_bazel_envoybuild/b570b5ccd0454dc9af9f65ab1833764d/sandbox/processwrapper-sandbox/2/execroot/envoy/external/com_github_unicode_org_icu/icu4c/source/tools/makeconv/genmbcs.cpp
gcc ... /build/.cache/bazel/_bazel_envoybuild/b570b5ccd0454dc9af9f65ab1833764d/sandbox/processwrapper-sandbox/2/execroot/envoy/external/com_github_unicode_org_icu/icu4c/source/tools/makeconv/makeconv.cpp
gcc ... /build/.cache/bazel/_bazel_envoybuild/b570b5ccd0454dc9af9f65ab1833764d/sandbox/processwrapper-sandbox/2/execroot/envoy/external/com_github_unicode_org_icu/icu4c/source/tools/makeconv/ucnvstat.c
/usr/bin/gcc -U_FORTIFY_SOURCE -fstack-protector -Wall -Wunused-but-set-parameter -Wno-free-nonheap-object -fno-omit-frame-pointer -std=c++0x -fno-canonical-system-headers -Wno-builtin-macro-redefined -D__DATE__=redacted -D__TIMESTAMP__=redacted -D__TIME__=redacted -DABSL_MIN_LOG_LEVEL=4 -fPIC -Wno-deprecated-declarations -std=c++17 -fPIC -DU_CHARSET_IS_UTF8=1 -DU_USING_ICU_NAMESPACE=0 -DUCONFIG_ONLY_HTML_CONVERSION=1 -DUCONFIG_NO_LEGACY_CONVERSION=1 -DUCONFIG_NO_BREAK_ITERATION=1 -DUCONFIG_NO_COLLATION=1 -DUCONFIG_NO_FORMATTING=1 -DUCONFIG_NO_TRANSLITERATION=1 -DUCONFIG_NO_REGULAR_EXPRESSIONS=1 -W -Wall -pedantic -Wpointer-arith -Wwrite-strings -Wno-long-long -fuse-ld=gold -Wl,-no-as-needed -Wl,-z,relro,-z,now -B/usr/bin -pass-exit-codes -lm -l:libstdc++.a -Wl,--gc-sections -o ../../bin/makeconv gencnvex.o genmbcs.o makeconv.o ucnvstat.o -L../../lib -licutu -L../../lib -licui18n -L../../lib -licuuc -L../../stubdata -licudata -lpthread -lm
makeconv.o:makeconv.cpp:DW.ref.__gxx_personality_v0: error: undefined reference to '__gxx_personality_v0'
../../lib/libicuuc.a(umutex.ao):umutex.cpp:function std::mutex::lock(): error: undefined reference to 'std::__throw_system_error(int)'
../../lib/libicuuc.a(umutex.ao):umutex.cpp:function umtx_cleanup: error: undefined reference to 'std::condition_variable::~condition_variable()'
../../lib/libicuuc.a(umutex.ao):umutex.cpp:function umtx_init::{lambda()#2}::operator()() const: error: undefined reference to 'std::condition_variable::condition_variable()'
../../lib/libicuuc.a(umutex.ao):umutex.cpp:function icu_72::umtx_initImplPreInit(icu_72::UInitOnce&): error: undefined reference to 'std::condition_variable::wait(std::unique_lock&)'
../../lib/libicuuc.a(umutex.ao):umutex.cpp:function icu_72::umtx_initImplPostInit(icu_72::UInitOnce&): error: undefined reference to 'std::condition_variable::notify_all()'
../../lib/libicuuc.a(umutex.ao):umutex.cpp:function std::call_once(std::once_flag&, void (&)())::{lambda()#2}::operator()() const: error: undefined reference to 'std::__once_callable'
../../lib/libicuuc.a(umutex.ao):umutex.cpp:function void std::call_once(std::once_flag&, void (&)()): error: undefined reference to 'std::__once_callable'
../../lib/libicuuc.a(umutex.ao):umutex.cpp:function void std::call_once(std::once_flag&, void (&)()): error: undefined reference to 'std::__once_call'
../../lib/libicuuc.a(umutex.ao):umutex.cpp:function void std::call_once(std::once_flag&, void (&)()): error: undefined reference to '__once_proxy'
../../lib/libicuuc.a(umutex.ao):umutex.cpp:function void std::call_once(std::once_flag&, void (&)()): error: undefined reference to 'std::__throw_system_error(int)'
../../lib/libicuuc.a(umutex.ao):umutex.cpp:function std::unique_lock::lock(): error: undefined reference to 'std::__throw_system_error(int)'
../../lib/libicuuc.a(umutex.ao):umutex.cpp:function std::unique_lock::lock(): error: undefined reference to 'std::__throw_system_error(int)'
collect2: error: ld returned 1 exit status
make[2]: *** [Makefile:81: ../../bin/makeconv] Error 1
make[2]: Leaving directory '/build/.cache/bazel/_bazel_envoybuild/b570b5ccd0454dc9af9f65ab1833764d/sandbox/processwrapper-sandbox/2/execroot/envoy/bazel-out/k8-fastbuild/bin/bazel/foreign_cc/unicode_icu_build.build_tmpdir/tools/makeconv'
make[1]: *** [Makefile:47: all-recursive] Error 2
make[1]: Leaving directory '/build/.cache/bazel/_bazel_envoybuild/b570b5ccd0454dc9af9f65ab1833764d/sandbox/processwrapper-sandbox/2/execroot/envoy/bazel-out/k8-fastbuild/bin/bazel/foreign_cc/unicode_icu_build.build_tmpdir/tools'
make: *** [Makefile:153: all-recursive] Error 2
_____ END BUILD LOGS _____
rules_foreign_cc: Build wrapper script location: bazel-out/k8-fastbuild/bin/bazel/foreign_cc/unicode_icu_build_foreign_cc/wrapper_build_script.sh
rules_foreign_cc: Build script location: bazel-out/k8-fastbuild/bin/bazel/foreign_cc/unicode_icu_build_foreign_cc/build_script.sh
rules_foreign_cc: Build log location: bazel-out/k8-fastbuild/bin/bazel/foreign_cc/unicode_icu_build_foreign_cc/Configure.log

INFO: Elapsed time: 137.005s, Critical Path: 120.50s
INFO: 4 processes: 2 internal, 2 processwrapper-sandbox.
FAILED: Build did NOT complete successfully
Traceback (most recent call last):
File "./tools/gen_compilation_database.py", line 139, in
fix_compilation_database(args, generate_compilation_database(args))
File "./tools/gen_compilation_database.py", line 25, in generate_compilation_database
subprocess.check_call([args.bazel, *bazel_startup_options, "build"] + bazel_options + [
File "/usr/lib/python3.8/subprocess.py", line 364, in check_call
raise CalledProcessError(retcode, cmd)
subprocess.CalledProcessError: Command '['bazel', 'build', '--config=compdb', '--remote_download_outputs=all', '--aspects=@bazel_compdb//:aspects.bzl%compilation_database_aspect', '--output_groups=compdb_files,header_files', '//source/...', '//test/...', '//contrib/...']' returned non-zero exitstatus 1.
```

Envoy Commit ID: ca5d45d1887ae7ddec66f051acde4506e322656a
OS: linux(entered build container by ./ci/run_envoy_docker.sh /bin/bash)
Command: ./tools/gen_compilation_database.py