Can't handle UnknownFlag arguments with -Xclang (-fuse-ctor-homing)

[hurims]

Hi, I think I have no cache hit while building chromium on Ubuntu.

$ sccache -s
[2022-08-05T07:21:57Z DEBUG sccache::config] Attempting to read config file at "/home/user/.config/sccache/config"
[2022-08-05T07:21:57Z DEBUG sccache::config] Couldn't open config file: No such file or directory (os error 2)
[2022-08-05T07:21:57Z DEBUG sccache::commands] request_stats
Compile requests                    700
Compile requests executed             0
Cache hits                            0
Cache misses                          0
Cache timeouts                        0
Cache read errors                     0
Forced recaches                       0
Cache write errors                    0
Compilation failures                  0
Cache errors                          0
Non-cacheable compilations            0
Non-cacheable calls                 700
Non-compilation calls                 0
Unsupported compiler calls            0
Average cache write               0.000 s
Average cache read miss           0.000 s
Average cache read hit            0.000 s
Failed distributed compilations       0

Non-cacheable reasons:
Can't handle UnknownFlag arguments with -Xclang     700

Here are debug logs

[2022-08-05T05:37:09Z DEBUG sccache::server] parse_arguments: CannotCache(Can't handle UnknownFlag arguments with -Xclang): ["-MMD", "-MF", "obj/components/autofill_assistant/browser/browser/controller_observer.o.d", "-DDCHECK_ALWAYS_ON=1", "-DUSE_UDEV", "-DUSE_AURA=1", "-DUSE_GLIB=1", "-DUSE_OZONE=1", "-DNAVER_WHALE_BUILD", "-DWHALE_DEV_BUILD", "-D__STDC_CONSTANT_MACROS", "-D__STDC_FORMAT_MACROS", "-D_FILE_OFFSET_BITS=64", "-D_LARGEFILE_SOURCE", "-D_LARGEFILE64_SOURCE", "-D_GNU_SOURCE", "-DCR_CLANG_REVISION="llvmorg-15-init-17529-ga210f404-1"", "-DCOMPONENT_BUILD", "-D_LIBCPP_ABI_NAMESPACE=Cr", "-D_LIBCPP_ABI_VERSION=2", "-D_LIBCPP_ENABLE_NODISCARD", "-D_LIBCPP_DEBUG=0", "-DCR_LIBCXX_REVISION=253791a5ba1afef6f94d739e89c726c48169b1da", "-DCR_SYSROOT_HASH=cb4fa34f1faddafb72cace35faf62a611f2ca7c9", "-D_DEBUG", "-DDYNAMIC_ANNOTATIONS_ENABLED=1", "-DGLIB_VERSION_MAX_ALLOWED=GLIB_VERSION_2_40", "-DGLIB_VERSION_MIN_REQUIRED=GLIB_VERSION_2_40", "-DLIBYUV_DISABLE_NEON", "-DWEBP_EXTERN=extern", "-DGL_GLEXT_PROTOTYPES", "-DUSE_GLX", "-DUSE_EGL", "-DVK_USE_PLATFORM_XCB_KHR", "-DVK_USE_PLATFORM_WAYLAND_KHR", "-D_WTL_NO_AUTOMATIC_NAMESPACE", "-DON_FOCUS_PING_ENABLED", "-DTOOLKIT_VIEWS=1", "-DGOOGLE_PROTOBUF_NO_RTTI", "-DGOOGLE_PROTOBUF_NO_STATIC_INITIALIZER", "-DGOOGLE_PROTOBUF_INTERNAL_DONATE_STEAL_INLINE=0", "-DHAVE_PTHREAD", "-DPROTOBUF_USE_DLLS", "-DABSL_CONSUME_DLL", "-DBORINGSSL_SHARED_LIBRARY", "-DU_USING_ICU_NAMESPACE=0", "-DU_ENABLE_DYLOAD=0", "-DUSE_CHROMIUM_ICU=1", "-DU_ENABLE_TRACING=1", "-DU_ENABLE_RESOURCE_TRACING=0", "-DICU_UTIL_DATA_IMPL=ICU_UTIL_DATA_FILE", "-DLEVELDB_PLATFORM_CHROMIUM=1", "-DLEVELDB_SHARED_LIBRARY", "-DSK_CODEC_DECODES_PNG", "-DSK_CODEC_DECODES_WEBP", "-DSK_ENCODE_PNG", "-DSK_ENCODE_WEBP", "-DSK_ENABLE_SKSL", "-DSK_UNTIL_CRBUG_1187654_IS_FIXED", "-DSK_USER_CONFIG_HEADER="../../skia/config/SkUserConfig.h"", "-DSK_WIN_FONTMGR_NO_SIMULATIONS", "-DSK_GL", "-DSK_CODEC_DECODES_JPEG", "-DSK_ENCODE_JPEG", "-DSK_HAS_WUFFS_LIBRARY", "-DSK_VULKAN=1", "-DSKIA_DLL", "-DSKCMS_API=attribute((visibility("default")))", "-DSK_SUPPORT_GPU=1", "-DSK_GPU_WORKAROUNDS_HEADER="gpu/config/gpu_driver_bug_workaround_autogen.h"", "-DI18N_ADDRESS_VALIDATION_DATA_URL="https://chromium-i18n.appspot.com/ssl-aggregate-address/"", "-DWEBRTC_ENABLE_SYMBOL_EXPORT", "-DWEBRTC_ENABLE_AVX2", "-DWEBRTC_NON_STATIC_TRACE_EVENT_HANDLERS=0", "-DWEBRTC_CHROMIUM_BUILD", "-DWEBRTC_POSIX", "-DWEBRTC_LINUX", "-DABSL_ALLOCATOR_NOTHROW=1", "-DWEBRTC_USE_BUILTIN_ISAC_FIX=0", "-DWEBRTC_USE_BUILTIN_ISAC_FLOAT=1", "-DWEBRTC_USE_X11", "-DWEBRTC_USE_PIPEWIRE", "-DWEBRTC_DLOPEN_PIPEWIRE", "-DWEBRTC_USE_GIO", "-DLOGGING_INSIDE_WEBRTC", "-DCRASHPAD_ZLIB_SOURCE_EXTERNAL", "-DV8_USE_EXTERNAL_STARTUP_DATA", "-DUSE_V8_CONTEXT_SNAPSHOT", "-DV8_CONTEXT_SNAPSHOT_FILENAME="v8_context_snapshot.bin"", "-DATK_LIB_DIR="/usr/lib/x86_64-linux-gnu"", "-DUSE_ATK_BRIDGE", "-DUSING_V8_SHARED", "-DV8_ENABLE_CHECKS", "-DV8_COMPRESS_POINTERS", "-DV8_COMPRESS_POINTERS_IN_SHARED_CAGE", "-DV8_31BIT_SMIS_ON_64BIT_ARCH", "-DV8_ENABLE_SANDBOX", "-DV8_SANDBOXED_POINTERS", "-DV8_DEPRECATION_WARNINGS", "-DCPPGC_CAGED_HEAP", "-DCPPGC_YOUNG_GENERATION", "-I../..", "-Igen", "-I../../buildtools/third_party/libc++", "-I../../third_party/perfetto/include", "-Igen/third_party/perfetto/build_config", "-Igen/third_party/perfetto", "-I../../third_party/libyuv/include", "-I../../third_party/jsoncpp/source/include", "-I../../third_party/libwebp/src/src", "-Igen/third_party/private_membership/src", "-Igen/third_party/shell-encryption/src", "-Igen/components/policy/proto", "-I../../third_party/vulkan-deps/vulkan-headers/src/include", "-I../../third_party/khronos", "-I../../gpu", "-Igen/third_party/dawn/include", "-I../../third_party/dawn/include", "-I../../third_party/wtl/include", "-I../../third_party/protobuf/src", "-Igen/protoc_out", "-I../../third_party/abseil-cpp", "-I../../third_party/boringssl/src/include", "-I../../third_party/ced/src", "-I../../third_party/icu/source/common", "-I../../third_party/icu/source/i18n", "-I../../third_party/leveldatabase", "-I../../third_party/leveldatabase/src", "-I../../third_party/leveldatabase/src/include", "-I../../net/third_party/quiche/overrides", "-I../../net/third_party/quiche/src/quiche/common/platform/default", "-I../../net/third_party/quiche/src", "-Igen/net/third_party/quiche/src", "-I../../third_party/skia", "-I../../third_party/wuffs/src/release/c", "-I../../third_party/vulkan/include", "-I../../third_party/libaddressinput/src/cpp/include", "-I../../third_party/webrtc_overrides", "-I../../third_party/webrtc", "-Igen/third_party/webrtc", "-I../../third_party/libwebm/source", "-I../../third_party/mesa_headers", "-I../../third_party/libaom/source/libaom", "-I../../third_party/crashpad/crashpad", "-I../../third_party/crashpad/crashpad/compat/linux", "-I../../third_party/crashpad/crashpad/compat/non_win", "-I../../third_party/zlib", "-I../../v8/include", "-Igen/v8/include", "-Igen/third_party/metrics_proto", "-I../../third_party/re2/src", "-Wall", "-Wextra", "-Wimplicit-fallthrough", "-Wunreachable-code-aggressive", "-Wthread-safety", "-Wno-missing-field-initializers", "-Wno-unused-parameter", "-Wloop-analysis", "-Wno-unneeded-internal-declaration", "-Wenum-compare-conditional", "-Wno-psabi", "-Wno-ignored-pragma-optimize", "-Wno-unqualified-std-cast-call", "-Wno-array-parameter", "-Wno-deprecated-builtins", "-Wmax-tokens", "-Wshadow", "-fno-delete-null-pointer-checks", "-fno-ident", "-fno-strict-aliasing", "--param=ssp-buffer-size=4", "-fstack-protector", "-funwind-tables", "-fPIC", "-pthread", "-fcolor-diagnostics", "-fmerge-all-constants", "-fcrash-diagnostics-dir=../../tools/clang/crashreports", "-mllvm", "-instcombine-lower-dbg-declare=0", "-ffp-contract=off", "-fcomplete-member-pointers", "-m64", "-msse3", "-Wno-builtin-macro-redefined", "-D__DATE__=", "-D__TIME__=", "-D__TIMESTAMP__=", "-ffile-compilation-dir=.", "-no-canonical-prefixes", "-ftrivial-auto-var-init=pattern", "-O0", "-fno-omit-frame-pointer", "-gdwarf-4", "-g2", "-gdwarf-aranges", "-ggnu-pubnames", "-Xclang", "-fuse-ctor-homing", "-fvisibility=hidden", "-Wheader-hygiene", "-Wstring-conversion", "-Wtautological-overlap-compare", "-isystem../../build/linux/debian_bullseye_amd64-sysroot/usr/include/glib-2.0", "-isystem../../build/linux/debian_bullseye_amd64-sysroot/usr/lib/x86_64-linux-gnu/glib-2.0/include", "-DPROTOBUF_ALLOW_DEPRECATED=1", "-isystem../../build/linux/debian_bullseye_amd64-sysroot/usr/include/nss", "-isystem../../build/linux/debian_bullseye_amd64-sysroot/usr/include/nspr", "-Wno-shadow", "-isystem../../build/linux/debian_bullseye_amd64-sysroot/usr/include/at-spi2-atk/2.0", "-isystem../../build/linux/debian_bullseye_amd64-sysroot/usr/include/at-spi-2.0", "-isystem../../build/linux/debian_bullseye_amd64-sysroot/usr/include/dbus-1.0", "-isystem../../build/linux/debian_bullseye_amd64-sysroot/usr/lib/x86_64-linux-gnu/dbus-1.0/include", "-isystem../../build/linux/debian_bullseye_amd64-sysroot/usr/include/atk-1.0", "-isystem../../build/linux/debian_bullseye_amd64-sysroot/usr/include/glib-2.0", "-isystem../../build/linux/debian_bullseye_amd64-sysroot/usr/lib/x86_64-linux-gnu/glib-2.0/include", "-Wno-undefined-bool-conversion", "-Wno-tautological-undefined-compare", "-std=c++17", "-Wno-trigraphs", "-fno-exceptions", "-fno-rtti", "-nostdinc++", "-isystem../../buildtools/third_party/libc++/trunk/include", "-isystem../../buildtools/third_party/libc++abi/trunk/include", "--sysroot=../../build/linux/debian_bullseye_amd64-sysroot", "-fvisibility-inlines-hidden", "-Wno-deprecated-declarations", "-c", "../../components/autofill_assistant/browser/controller_observer.cc", "-o", "obj/components/autofill_assistant/browser/browser/controller_observer.o"]

-fuse-ctor-homing compile flag seems inserted only when configured for the debug build.
https://source.chromium.org/chromium/chromium/src/+/main:build/config/compiler/BUILD.gn;l=2393;drc=5ecdeae9114f5e3e72278378436575071fdaebe7