Hey guys, I am just facing the same issue, did you manage to get a successful build?
On Wednesday, September 3, 2025 at 8:45:43 AM UTC-4 [email protected] wrote: > I am also struggling with the same issue. I believe the problem related > to temporal_rs can be resolved with the following gn flags. > enable_rust=false > enable_rust_cxx=false > v8_enable_temporal_support=false > 2025년 7월 30일 수요일 오전 11시 53분 24초 UTC+9에 sw l님이 작성: > >> *"However, after successfully compiling, I encountered the following >> undefined symbol issue when integrating it into the Android project."* >> >> [image: error.png] >> 在2025年7月30日星期三 UTC+8 10:51:24<sw l> 写道： >> >>> *"Currently, I am still using the configuration use_custom_libcxx = >>> false, and I applied the following patch to modify the code and make it >>> compile successfully."* >>> >>> >>> *builtins-typed-array.cc* >>> diff --git a/src/builtins/builtins-typed-array.cc >>> b/src/builtins/builtins-typed-array.cc >>> index abc1234..def5678 100644 >>> --- a/src/builtins/builtins-typed-array.cc >>> +++ b/src/builtins/builtins-typed-array.cc >>> @@ -506,10 +506,15 @@ simdutf::result ArrayBufferSetFromBase64( >>> simdutf::last_chunk_handling_options last_chunk_handling, >>> DirectHandle<JSTypedArray> typed_array, size_t& output_length) { >>> output_length = array_length; >>> - simdutf::result simd_result; >>> + simdutf::result simd_result = {simdutf::error_code::SUCCESS, 0}; >>> if (typed_array->buffer()->is_shared()) { >>> - simd_result = simdutf::atomic_base64_to_binary_safe( >>> - reinterpret_cast<const T>(input_vector), input_length, >>> + // For shared buffers, we need to copy to a temporary buffer first >>> + std::unique_ptr<char[]> temp_input = >>> std::make_unique<char[]>(input_length); >>> + std::memcpy(temp_input.get(), reinterpret_cast<const >>> char*>(input_vector), >>> + input_length); >>> + >>> + simd_result = simdutf::base64_to_binary_safe( >>> + temp_input.get(), input_length, >>> reinterpret_cast<char*>(typed_array->DataPtr()), output_length, >>> alphabet, last_chunk_handling, /*decode_up_to_bad_char*/ true); >>> } else { >>> @@ -836,8 +841,13 @@ BUILTIN(Uint8ArrayPrototypeToBase64) { >>> size_t simd_result_size; >>> if (uint8array->buffer()->is_shared()) { >>> - simd_result_size = simdutf::atomic_binary_to_base64( >>> - std::bit_cast<const char*>(uint8array->DataPtr()), length, >>> + // For shared buffers, we need to copy to a temporary buffer first >>> + std::unique_ptr<char[]> temp_input = std::make_unique<char[]>(length); >>> + std::memcpy(temp_input.get(), >>> + std::bit_cast<const char*>(uint8array->DataPtr()), length); >>> + >>> + simd_result_size = simdutf::binary_to_base64( >>> + temp_input.get(), length, >>> reinterpret_cast<char*>(output->GetChars(no_gc)), alphabet); >>> } else { >>> simd_result_size = simdutf::binary_to_base64( >>> >>> >>> simd.cc >>> diff --git a/src/objects/simd.cc b/src/objects/simd.cc >>> index ef2b8118eec..c595f955efe 100644 >>> --- a/src/objects/simd.cc >>> +++ b/src/objects/simd.cc >>> @@ -484,11 +484,23 @@ void AtomicUint8ArrayToHexSlow(const char* bytes, >>> size_t length, >>> // https://cplusplus.github.io/LWG/issue3508 >>> // we instead provide a mutable input, which is ok since we are only >>> reading >>> // from it. >>> - char* mutable_bytes = const_cast<char*>(bytes); >>> + // char* mutable_bytes = const_cast<char*>(bytes); >>> for (size_t i = 0; i < length; i++) { >>> - uint8_t byte = >>> - >>> std::atomic_ref<char>(mutable_bytes[i]).load(std::memory_order_relaxed); >>> - PerformNibbleToHexAndWriteIntoStringOutPut(byte, index, string_output); >>> + // uint8_t byte = >>> + // >>> std::atomic_ref<char>(mutable_bytes[i]).load(std::memory_order_relaxed); >>> + // PerformNibbleToHexAndWriteIntoStringOutPut(byte, index, >>> string_output); >>> + >>> + // Use compiler built-in atomic load for shared memory >>> + char byte; >>> + __atomic_load( >>> + const_cast<char*>(bytes) + i, >>> + &byte, >>> + __ATOMIC_RELAXED >>> + ); >>> + PerformNibbleToHexAndWriteIntoStringOutPut( >>> + static_cast<uint8_t>(byte), >>> + index, string_output); >>> + >>> index += 2; >>> } >>> } >>> @@ -1081,14 +1093,23 @@ bool ArrayBufferFromHex(const base::Vector<T>& >>> input_vector, bool is_shared, >>> size_t index = 0; >>> std::optional<uint8_t> result = 0; >>> - for (uint32_t i = 0; i < output_length * 2; i += 2) { >>> + for (size_t i = 0; i < output_length * 2; i += 2) { >>> result = HandleRemainingHexValues(input_vector, i); >>> if (result.has_value()) { >>> + uint8_t value = result.value(); >>> if (is_shared) { >>> - std::atomic_ref<uint8_t>(buffer[index++]) >>> - .store(result.value(), std::memory_order_relaxed); >>> + // std::atomic_ref<uint8_t>(buffer[index++]) >>> + // .store(result.value(), std::memory_order_relaxed); >>> + // Use compiler built-in atomic store for shared memory >>> + __atomic_store( >>> + buffer + index, >>> + &value, >>> + __ATOMIC_RELAXED >>> + ); >>> + index++; >>> } else { >>> - buffer[index++] = result.value(); >>> + // buffer[index++] = result.value(); >>> + buffer[index++] = value; >>> } >>> } else { >>> return false; >>> >>> 在2025年7月29日星期二 UTC+8 20:13:45<[email protected]> 写道： >>> >>>> “Did you solve this issue? I’m currently facing the same problem and at >>>> the time I didn’t have a good solution. I’m using a configuration similar >>>> to yours and am encountering the exact same issue.” >>>> 在2025年7月28日星期一 UTC+8 21:16:30<[email protected]> 写道： >>>> >>>>> *"When building the V8 static library for the Android platform >>>>> (arm64-v8a), the following error occurred in simdutf."* >>>>> >>>>> root@ce59529b30aa:~/v8/v8# gn gen out/android.arm64.monolith --args=" >>>>> >>>>> > target_os = \"android\" >>>>> >>>>> > target_cpu = \"arm64\" >>>>> >>>>> > is_debug = false >>>>> >>>>> > optimize_for_size = true >>>>> >>>>> > v8_enable_31bit_smis_on_64bit_arch = true >>>>> >>>>> > symbol_level = 0 >>>>> >>>>> > v8_use_external_startup_data=false >>>>> >>>>> > >>>>> >>>>> > v8_monolithic = true >>>>> >>>>> > v8_static_library = true >>>>> >>>>> > is_component_build = false >>>>> >>>>> > >>>>> >>>>> > v8_enable_webassembly = false >>>>> >>>>> > v8_enable_i18n_support = false >>>>> >>>>> > #v8_enable_pointer_compression = true >>>>> >>>>> > >>>>> >>>>> > android_unstripped_runtime_outputs = false >>>>> >>>>> > dcheck_always_on = false >>>>> >>>>> > default_min_sdk_version = 21 >>>>> >>>>> > v8_android_log_stdout = true >>>>> >>>>> > >>>>> >>>>> > use_sysroot = false >>>>> >>>>> > use_custom_libcxx = false >>>>> >>>>> > use_glib = false >>>>> >>>>> > " >>>>> >>>>> Done. Made 1013 targets from 228 files in 454ms >>>>> >>>>> root@ce59529b30aa:~/v8/v8# autoninja -C out/android.arm64.monolith >>>>> v8_monolith >>>>> >>>>> ninja: Entering directory `out/android.arm64.monolith' >>>>> >>>>> 1.06s load siso config >>>>> >>>>> [1227/3101] 25m00.40s F CXX >>>>> obj/v8_base_without_compiler/builtins-typed-array.o >>>>> >>>>> *FAILED: 6a074098-7768-4ded-a7d8-da56e857aaa2 >>>>> "./obj/v8_base_without_compiler/builtins-typed-array.o" CXX >>>>> obj/v8_base_without_compiler/builtins-typed-array.o* >>>>> >>>>> err: exit=1 >>>>> >>>>> ../../third_party/llvm-build/Release+Asserts/bin/clang++ -MD -MF >>>>> obj/v8_base_without_compiler/builtins-typed-array.o.d >>>>> -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D_FORTIFY_SOURCE=2 >>>>> -D_GNU_SOURCE -D__ARM_NEON__=1 -DANDROID >>>>> -D__ANDROID_UNAVAILABLE_SYMBOLS_ARE_WEAK__ -DHAVE_SYS_UIO_H >>>>> -DANDROID_NDK_VERSION_ROLL=r28_1 >>>>> -DCR_CLANG_REVISION=\"llvmorg-21-init-11777-gfd3fecfc-1\" >>>>> -D_LIBCPP_HARDENING_MODE=_LIBCPP_HARDENING_MODE_NONE -DNDEBUG -DNVALGRIND >>>>> -DDYNAMIC_ANNOTATIONS_ENABLED=0 -DV8_TYPED_ARRAY_MAX_SIZE_IN_HEAP=64 >>>>> -DV8_TEMPORAL_SUPPORT -DV8_ATOMIC_OBJECT_FIELD_WRITES >>>>> -DV8_ENABLE_LAZY_SOURCE_POSITIONS -DV8_WIN64_UNWINDING_INFO >>>>> -DV8_ENABLE_REGEXP_INTERPRETER_THREADED_DISPATCH >>>>> -DV8_SNAPSHOT_COMPRESSION >>>>> -DV8_ENABLE_CONTROL_FLOW_INTEGRITY -DV8_ENABLE_FUZZTEST >>>>> -DV8_SHORT_BUILTIN_CALLS -DV8_EXTERNAL_CODE_SPACE -DV8_ENABLE_SPARKPLUG >>>>> -DV8_ENABLE_MAGLEV -DV8_ENABLE_TURBOFAN >>>>> -DV8_ENABLE_CONTINUATION_PRESERVED_EMBEDDER_DATA -DV8_ALLOCATION_FOLDING >>>>> -DV8_ALLOCATION_SITE_TRACKING -DV8_USE_ZLIB -DV8_USE_LIBM_TRIG_FUNCTIONS >>>>> -DV8_ENABLE_MAGLEV_GRAPH_PRINTER -DV8_ENABLE_BUILTIN_JUMP_TABLE_SWITCH >>>>> -DV8_ENABLE_EXTENSIBLE_RO_SNAPSHOT -DV8_ENABLE_BLACK_ALLOCATED_PAGES >>>>> -DV8_ENABLE_LEAPTIERING -DV8_WASM_RANDOM_FUZZERS >>>>> -DV8_ARRAY_BUFFER_INTERNAL_FIELD_COUNT=0 >>>>> -DV8_ARRAY_BUFFER_VIEW_INTERNAL_FIELD_COUNT=0 >>>>> -DV8_PROMISE_INTERNAL_FIELD_COUNT=0 -DV8_COMPRESS_POINTERS >>>>> -DV8_COMPRESS_POINTERS_IN_SHARED_CAGE -DV8_31BIT_SMIS_ON_64BIT_ARCH >>>>> -DV8_ENABLE_SANDBOX -DV8_DEPRECATION_WARNINGS >>>>> -DV8_IMMINENT_DEPRECATION_WARNINGS -DV8_HAVE_TARGET_OS >>>>> -DV8_TARGET_OS_ANDROID -DCPPGC_CAGED_HEAP -DCPPGC_YOUNG_GENERATION >>>>> -DCPPGC_POINTER_COMPRESSION -DCPPGC_ENABLE_LARGER_CAGE >>>>> -DCPPGC_SLIM_WRITE_BARRIER -DV8_TARGET_ARCH_ARM64 -DV8_ANDROID_LOG_STDOUT >>>>> -DV8_RUNTIME_CALL_STATS -DABSL_ALLOCATOR_NOTHROW=1 >>>>> -DTEMPORAL_CAPI_VERSION_0_0_9 -DHWY_BROKEN_TARGETS=HWY_ALL_SVE -I../.. >>>>> -Igen -I../../include -Igen/include -I../../third_party/abseil-cpp >>>>> -I../../third_party/fp16/src/include >>>>> -I../../third_party/rust/chromium_crates_io/vendor/temporal_capi-v0_0_9/bindings/cpp >>>>> >>>>> -I../../third_party/dragonbox/src/include >>>>> -I../../third_party/fast_float/src/include >>>>> -I../../third_party/highway/src >>>>> -I../../third_party/zlib -Wall -Wextra -Wimplicit-fallthrough >>>>> -Wextra-semi >>>>> -Wunreachable-code-aggressive -Wthread-safety -Wgnu >>>>> -Wno-gnu-anonymous-struct -Wno-gnu-conditional-omitted-operand >>>>> -Wno-gnu-include-next -Wno-gnu-label-as-value -Wno-gnu-redeclared-enum >>>>> -Wno-gnu-statement-expression -Wno-gnu-zero-variadic-macro-arguments >>>>> -Wno-zero-length-array -Wunguarded-availability >>>>> -Wno-missing-field-initializers -Wno-unused-parameter -Wno-psabi >>>>> -Wloop-analysis -Wno-unneeded-internal-declaration >>>>> -Wno-cast-function-type >>>>> -Wno-thread-safety-reference-return -Wno-nontrivial-memcall -Wshadow >>>>> -Werror -fno-delete-null-pointer-checks -fno-strict-overflow -fno-ident >>>>> -fno-strict-aliasing -fstack-protector -funwind-tables -fPIC >>>>> -fcolor-diagnostics -fmerge-all-constants -fno-sized-deallocation >>>>> -fcrash-diagnostics-dir=../../tools/clang/crashreports -mllvm >>>>> -instcombine-lower-dbg-declare=0 -mllvm >>>>> -split-threshold-for-reg-with-hint=0 -ffp-contract=off >>>>> -ffunction-sections >>>>> -fno-short-enums -mbranch-protection=standard >>>>> --target=aarch64-linux-android21 -mno-outline >>>>> -Wno-builtin-macro-redefined >>>>> -D__DATE__= -D__TIME__= -D__TIMESTAMP__= -ffile-compilation-dir=. >>>>> -no-canonical-prefixes -fno-omit-frame-pointer -g0 -Wheader-hygiene >>>>> -Wstring-conversion -Wtautological-overlap-compare -Wunreachable-code >>>>> -Wno-shadow -Wctad-maybe-unsupported -Xclang -add-plugin -Xclang >>>>> blink-gc-plugin -Wno-invalid-offsetof -Wshorten-64-to-32 >>>>> -Wmissing-field-initializers -O2 -fdata-sections -ffunction-sections >>>>> -fno-unique-section-names -fno-math-errno -fvisibility=default >>>>> -Wexit-time-destructors -Wno-invalid-offsetof -Wenum-compare-conditional >>>>> -Wno-nullability-completeness -std=c++20 -Wno-trigraphs >>>>> -gsimple-template-names -fno-exceptions -fno-rtti >>>>> --sysroot=../../third_party/android_toolchain/ndk/toolchains/llvm/prebuilt/linux-x86_64/sysroot >>>>> >>>>> -c ../../src/builtins/builtins-typed-array.cc -o >>>>> obj/v8_base_without_compiler/builtins-typed-array.o >>>>> >>>>> build step: cxx "./obj/v8_base_without_compiler/builtins-typed-array.o" >>>>> >>>>> siso_rule: clang/cxx >>>>> >>>>> stderr: >>>>> >>>>> *../../src/builtins/builtins-typed-array.cc:508:28: **error: **no >>>>> member named 'atomic_base64_to_binary_safe' in namespace 'simdutf'; did >>>>> you >>>>> mean 'base64_to_binary_safe'?* >>>>> >>>>> 508 | simd_result = simdutf::atomic_base64_to_binary_safe( >>>>> >>>>> | * ^~~~~~~~~~~~~~~~~~~~~~~~~~~~* >>>>> >>>>> | base64_to_binary_safe >>>>> >>>>> *../../third_party/simdutf/simdutf.h:4369:1: **note: >>>>> *'base64_to_binary_safe' >>>>> declared here >>>>> >>>>> 4369 | base64_to_binary_safe(const char *input, size_t length, char >>>>> *output, >>>>> >>>>> | *^* >>>>> >>>>> *../../src/builtins/builtins-typed-array.cc:829:35: **error: **no >>>>> member named 'atomic_binary_to_base64' in namespace 'simdutf'; did you >>>>> mean >>>>> 'binary_to_base64'?* >>>>> >>>>> 829 | simd_result_size = simdutf::atomic_binary_to_base64( >>>>> >>>>> | * ^~~~~~~~~~~~~~~~~~~~~~~* >>>>> >>>>> | binary_to_base64 >>>>> >>>>> *../../third_party/simdutf/simdutf.h:4110:8: **note: *'binary_to_base64' >>>>> declared here >>>>> >>>>> 4110 | size_t binary_to_base64(const char *input, size_t length, char >>>>> *output, >>>>> >>>>> | * ^* >>>>> >>>>> *../../src/builtins/builtins-typed-array.cc:509:9: **error: **cannot >>>>> initialize a parameter of type 'const char *' with an rvalue of type >>>>> 'const >>>>> char16_t *'* >>>>> >>>>> 509 | reinterpret_cast<const T>(input_vector), input_length, >>>>> >>>>> | * ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~* >>>>> >>>>> *../../src/builtins/builtins-typed-array.cc:687:21: **note: *in >>>>> instantiation of function template specialization >>>>> 'v8::internal::(anonymous >>>>> namespace)::ArrayBufferSetFromBase64<const char16_t *>' requested here >>>>> >>>>> 687 | simd_result = ArrayBufferSetFromBase64( >>>>> >>>>> | * ^* >>>>> >>>>> *../../third_party/simdutf/simdutf.h:4369:35: **note: *passing >>>>> argument to parameter 'input' here >>>>> >>>>> 4369 | base64_to_binary_safe(const char *input, size_t length, char >>>>> *output, >>>>> >>>>> | * ^* >>>>> >>>>> 3 errors generated. >>>>> >>>>> >>>>> build failed >>>>> >>>>> local:1228 remote:0 cache:0 fallback:0 retry:0 skip:478 >>>>> >>>>> fs: ops: 105378(err:21627) / r:13726(err:0) 1.09GiB / w:124(err:0) >>>>> 113.85MiB >>>>> >>>>> resource/capa used(err) wait-avg | s m | serv-avg | s m | >>>>> >>>>> localexec/8 1135(1) 5m01.65s |▂▂▂▂▃█▄| 10.36s | ▃▃█▅▂ | >>>>> >>>>> pool=link/1 16(0) 13.35s |▆ ▇█▃ | 6.21s | ▃█▃ | >>>>> >>>>> >>>>> *25m00.93s* Build Failure: 1228 done 1 failed 1873 remaining - 0.82/s >>>>> >>>>> 1 steps failed: exit=1 >>>>> >>>>> *see ./out/android.arm64.monolith/siso_output for full command line >>>>> and output* >>>>> >>>>> * or ./out/android.arm64.monolith/siso.INFO* >>>>> >>>>> *use ./out/android.arm64.monolith/siso_failed_commands.sh to re-run >>>>> failed commands* >>>>> >>>>> >>>>> *------------------------------------------------------------------------------* >>>>> >>>>> *"If I remove the use_custom_libcxx, use_sysroot, and use_glib >>>>> configurations, it can successfully compile libv8_monolith.a. However, >>>>> when >>>>> I integrate it into my Android project and use NDK version 28.1.13356709, >>>>> it encounters unresolved symbol errors."* >>>>> >>>>> >>>>> [image: error.png] >>>>> >>>>> *"I'm very confused right now and can't find any useful resources to >>>>> help me solve the problem. Please tell me how to compile a static library >>>>> that can be used on Android. The V8 tag I'm currently using is 13.9.210."* >>>>> >>>>> >>>>> >>>>> -- -- v8-users mailing list [email protected] http://groups.google.com/group/v8-users --- You received this message because you are subscribed to the Google Groups "v8-users" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion visit https://groups.google.com/d/msgid/v8-users/ba107227-0c63-4fb7-b2f5-a4d0e369d4c8n%40googlegroups.com.
