v8: "ld.lld: error: unable to find library -lrt" when building for android aarch64

[MatteoBax]

Version

No response

Platform

No response

Subsystem

No response

What steps will reproduce the bug?

./android-configure /home/matteo/Android/Sdk/ndk/26.1.10909125 33 aarch64

make AR_host=gcc-ar CC_host=gcc CXX_host=g++ AR_target=/home/matteo/Android/Sdk/ndk/26.1.10909125/toolchains/llvm/prebuilt/linux-x86_64/bin/llvm-ar CC_target=/home/matteo/Android/Sdk/ndk/26.1.10909125/toolchains/llvm/prebuilt/linux-x86_64/bin/aarch64-linux-android33-clang CXX_target=/home/matteo/Android/Sdk/ndk/26.1.10909125/toolchains/llvm/prebuilt/linux-x86_64/bin/aarch64-linux-android33-clang++ -j8

How often does it reproduce? Is there a required condition?

No response

What is the expected behavior? Why is that the expected behavior?

No response

What do you see instead?

/home/matteo/Android/Sdk/ndk/26.1.10909125/toolchains/llvm/prebuilt/linux-x86_64/bin/aarch64-linux-android33-clang++ -rdynamic -pthread -fPIC  -o /home/matteo/node/out/Release/bytecode_builtins_list_generator -Wl,--start-group /home/matteo/node/out/Release/obj.host/bytecode_builtins_list_generator/deps/v8/src/builtins/generate-bytecodes-builtins-list.o /home/matteo/node/out/Release/obj.host/bytecode_builtins_list_generator/deps/v8/src/interpreter/bytecode-operands.o /home/matteo/node/out/Release/obj.host/bytecode_builtins_list_generator/deps/v8/src/interpreter/bytecodes.o /home/matteo/node/out/Release/obj.host/tools/v8_gypfiles/libv8_libbase.a -Wl,--end-group -ldl -lrt
rm -f /home/matteo/node/out/Release/obj.host/tools/v8_gypfiles/libtorque_base.a ar-file-list; mkdir -p `dirname /home/matteo/node/out/Release/obj.host/tools/v8_gypfiles/libtorque_base.a`
  touch /home/matteo/node/out/Release/obj.host/tools/v8_gypfiles/v8_maybe_icu.stamp
  /home/matteo/Android/Sdk/ndk/26.1.10909125/toolchains/llvm/prebuilt/linux-x86_64/bin/aarch64-linux-android33-clang++ -rdynamic -pthread -fPIC  -o /home/matteo/node/out/Release/genccode -Wl,--start-group /home/matteo/node/out/Release/obj.host/genccode/deps/icu-small/source/tools/genccode/genccode.o /home/matteo/node/out/Release/obj.host/genccode/tools/icu/no-op.o /home/matteo/node/out/Release/obj.host/tools/icu/libicutools.a -Wl,--end-group 
ar crsT /home/matteo/node/out/Release/obj.host/tools/v8_gypfiles/libtorque_base.a @/home/matteo/node/out/Release/obj.host/tools/v8_gypfiles/libtorque_base.a.ar-file-list
  /home/matteo/Android/Sdk/ndk/26.1.10909125/toolchains/llvm/prebuilt/linux-x86_64/bin/aarch64-linux-android33-clang++ -rdynamic -pthread -fPIC  -o /home/matteo/node/out/Release/icupkg -Wl,--start-group /home/matteo/node/out/Release/obj.host/icupkg/deps/icu-small/source/tools/icupkg/icupkg.o /home/matteo/node/out/Release/obj.host/icupkg/tools/icu/no-op.o /home/matteo/node/out/Release/obj.host/tools/icu/libicutools.a -Wl,--end-group 
  /home/matteo/Android/Sdk/ndk/26.1.10909125/toolchains/llvm/prebuilt/linux-x86_64/bin/aarch64-linux-android33-clang++ -o /home/matteo/node/out/Release/obj.host/gen-regexp-special-case/deps/v8/src/regexp/gen-regexp-special-case.o ../deps/v8/src/regexp/gen-regexp-special-case.cc '-D_GLIBCXX_USE_CXX11_ABI=1' '-DNODE_OPENSSL_CONF_NAME=nodejs_conf' '-DNODE_OPENSSL_HAS_QUIC' '-DICU_NO_USER_DATA_OVERRIDE' '-DV8_GYP_BUILD' '-DV8_TYPED_ARRAY_MAX_SIZE_IN_HEAP=64' '-D__STDC_FORMAT_MACROS' '-DOPENSSL_NO_PINSHARED' '-DOPENSSL_THREADS' '-DOPENSSL_NO_ASM' '-DV8_TARGET_ARCH_ARM64' '-DV8_HAVE_TARGET_OS' '-DV8_TARGET_OS_ANDROID' '-DV8_EMBEDDER_STRING="-node.12"' '-DENABLE_DISASSEMBLER' '-DV8_PROMISE_INTERNAL_FIELD_COUNT=1' '-DOBJECT_PRINT' '-DV8_INTL_SUPPORT' '-DV8_ATOMIC_OBJECT_FIELD_WRITES' '-DV8_ENABLE_LAZY_SOURCE_POSITIONS' '-DV8_USE_SIPHASH' '-DV8_SHARED_RO_HEAP' '-DV8_WIN64_UNWINDING_INFO' '-DV8_ENABLE_REGEXP_INTERPRETER_THREADED_DISPATCH' '-DV8_USE_ZLIB' '-DV8_ENABLE_TURBOFAN' '-DV8_ENABLE_WEBASSEMBLY' '-DV8_ENABLE_JAVASCRIPT_PROMISE_HOOKS' '-DV8_ALLOCATION_FOLDING' '-DV8_ALLOCATION_SITE_TRACKING' '-DV8_SCRIPTORMODULE_LEGACY_LIFETIME' '-DV8_ADVANCED_BIGINT_ALGORITHMS' '-DUCONFIG_NO_SERVICE=1' '-DU_ENABLE_DYLOAD=0' '-DU_STATIC_IMPLEMENTATION=1' '-DU_HAVE_STD_STRING=1' '-DUCONFIG_NO_BREAK_ITERATION=0' -I../deps/v8 -I../deps/v8/include -I../deps/icu-small/source/common -I../deps/icu-small/source/i18n -I../deps/icu-small/source/tools/toolutil  -msign-return-address=all -Wno-unused-parameter -Wno-return-type -Wno-invalid-offsetof -pthread -fno-omit-frame-pointer -fPIC -I/home/matteo/Android/Sdk/ndk/26.1.10909125/sources/android/cpufeatures -fdata-sections -ffunction-sections -O2 -fno-rtti -fno-exceptions -std=gnu++17 -MMD -MF /home/matteo/node/out/Release/.deps//home/matteo/node/out/Release/obj.host/gen-regexp-special-case/deps/v8/src/regexp/gen-regexp-special-case.o.d.raw   -c
  /home/matteo/Android/Sdk/ndk/26.1.10909125/toolchains/llvm/prebuilt/linux-x86_64/bin/aarch64-linux-android33-clang++ -rdynamic -fPIC  -o /home/matteo/node/out/Release/openssl-cli -Wl,--start-group /home/matteo/node/out/Release/obj.target/openssl-cli/deps/openssl/openssl/apps/lib/cmp_mock_srv.o /home/matteo/node/out/Release/obj.target/openssl-cli/deps/openssl/openssl/apps/asn1parse.o /home/matteo/node/out/Release/obj.target/openssl-cli/deps/openssl/openssl/apps/ca.o /home/matteo/node/out/Release/obj.target/openssl-cli/deps/openssl/openssl/apps/ciphers.o /home/matteo/node/out/Release/obj.target/openssl-cli/deps/openssl/openssl/apps/cmp.o /home/matteo/node/out/Release/obj.target/openssl-cli/deps/openssl/openssl/apps/cms.o /home/matteo/node/out/Release/obj.target/openssl-cli/deps/openssl/openssl/apps/crl.o /home/matteo/node/out/Release/obj.target/openssl-cli/deps/openssl/openssl/apps/crl2pkcs7.o /home/matteo/node/out/Release/obj.target/openssl-cli/deps/openssl/openssl/apps/dgst.o /home/matteo/node/out/Release/obj.target/openssl-cli/deps/openssl/openssl/apps/dhparam.o /home/matteo/node/out/Release/obj.target/openssl-cli/deps/openssl/openssl/apps/dsa.o /home/matteo/node/out/Release/obj.target/openssl-cli/deps/openssl/openssl/apps/dsaparam.o /home/matteo/node/out/Release/obj.target/openssl-cli/deps/openssl/openssl/apps/ec.o /home/matteo/node/out/Release/obj.target/openssl-cli/deps/openssl/openssl/apps/ecparam.o /home/matteo/node/out/Release/obj.target/openssl-cli/deps/openssl/openssl/apps/enc.o /home/matteo/node/out/Release/obj.target/openssl-cli/deps/openssl/openssl/apps/engine.o /home/matteo/node/out/Release/obj.target/openssl-cli/deps/openssl/openssl/apps/errstr.o /home/matteo/node/out/Release/obj.target/openssl-cli/deps/openssl/openssl/apps/fipsinstall.o /home/matteo/node/out/Release/obj.target/openssl-cli/deps/openssl/openssl/apps/gendsa.o /home/matteo/node/out/Release/obj.target/openssl-cli/deps/openssl/openssl/apps/genpkey.o /home/matteo/node/out/Release/obj.target/openssl-cli/deps/openssl/openssl/apps/genrsa.o /home/matteo/node/out/Release/obj.target/openssl-cli/deps/openssl/openssl/apps/info.o /home/matteo/node/out/Release/obj.target/openssl-cli/deps/openssl/openssl/apps/kdf.o /home/matteo/node/out/Release/obj.target/openssl-cli/deps/openssl/openssl/apps/list.o /home/matteo/node/out/Release/obj.target/openssl-cli/deps/openssl/openssl/apps/mac.o /home/matteo/node/out/Release/obj.target/openssl-cli/deps/openssl/openssl/apps/nseq.o /home/matteo/node/out/Release/obj.target/openssl-cli/deps/openssl/openssl/apps/ocsp.o /home/matteo/node/out/Release/obj.target/openssl-cli/deps/openssl/openssl/apps/openssl.o /home/matteo/node/out/Release/obj.target/openssl-cli/deps/openssl/openssl/apps/passwd.o /home/matteo/node/out/Release/obj.target/openssl-cli/deps/openssl/openssl/apps/pkcs12.o /home/matteo/node/out/Release/obj.target/openssl-cli/deps/openssl/openssl/apps/pkcs7.o /home/matteo/node/out/Release/obj.target/openssl-cli/deps/openssl/openssl/apps/pkcs8.o /home/matteo/node/out/Release/obj.target/openssl-cli/deps/openssl/openssl/apps/pkey.o /home/matteo/node/out/Release/obj.target/openssl-cli/deps/openssl/openssl/apps/pkeyparam.o /home/matteo/node/out/Release/obj.target/openssl-cli/deps/openssl/openssl/apps/pkeyutl.o /home/matteo/node/out/Release/obj.target/openssl-cli/deps/openssl/openssl/apps/prime.o /home/matteo/node/out/Release/obj.target/openssl-cli/deps/openssl/config/archs/linux-aarch64/no-asm/apps/progs.o /home/matteo/node/out/Release/obj.target/openssl-cli/deps/openssl/openssl/apps/rand.o /home/matteo/node/out/Release/obj.target/openssl-cli/deps/openssl/openssl/apps/rehash.o /home/matteo/node/out/Release/obj.target/openssl-cli/deps/openssl/openssl/apps/req.o /home/matteo/node/out/Release/obj.target/openssl-cli/deps/openssl/openssl/apps/rsa.o /home/matteo/node/out/Release/obj.target/openssl-cli/deps/openssl/openssl/apps/rsautl.o /home/matteo/node/out/Release/obj.target/openssl-cli/deps/openssl/openssl/apps/s_client.o /home/matteo/node/out/Release/obj.target/openssl-cli/deps/openssl/openssl/apps/s_server.o /home/matteo/node/out/Release/obj.target/openssl-cli/deps/openssl/openssl/apps/s_time.o /home/matteo/node/out/Release/obj.target/openssl-cli/deps/openssl/openssl/apps/sess_id.o /home/matteo/node/out/Release/obj.target/openssl-cli/deps/openssl/openssl/apps/smime.o /home/matteo/node/out/Release/obj.target/openssl-cli/deps/openssl/openssl/apps/speed.o /home/matteo/node/out/Release/obj.target/openssl-cli/deps/openssl/openssl/apps/spkac.o /home/matteo/node/out/Release/obj.target/openssl-cli/deps/openssl/openssl/apps/srp.o /home/matteo/node/out/Release/obj.target/openssl-cli/deps/openssl/openssl/apps/storeutl.o /home/matteo/node/out/Release/obj.target/openssl-cli/deps/openssl/openssl/apps/ts.o /home/matteo/node/out/Release/obj.target/openssl-cli/deps/openssl/openssl/apps/verify.o /home/matteo/node/out/Release/obj.target/openssl-cli/deps/openssl/openssl/apps/version.o /home/matteo/node/out/Release/obj.target/openssl-cli/deps/openssl/openssl/apps/x509.o /home/matteo/node/out/Release/obj.target/openssl-cli/deps/openssl/openssl/apps/lib/app_libctx.o /home/matteo/node/out/Release/obj.target/openssl-cli/deps/openssl/openssl/apps/lib/app_params.o /home/matteo/node/out/Release/obj.target/openssl-cli/deps/openssl/openssl/apps/lib/app_provider.o /home/matteo/node/out/Release/obj.target/openssl-cli/deps/openssl/openssl/apps/lib/app_rand.o /home/matteo/node/out/Release/obj.target/openssl-cli/deps/openssl/openssl/apps/lib/app_x509.o /home/matteo/node/out/Release/obj.target/openssl-cli/deps/openssl/openssl/apps/lib/apps.o /home/matteo/node/out/Release/obj.target/openssl-cli/deps/openssl/openssl/apps/lib/apps_ui.o /home/matteo/node/out/Release/obj.target/openssl-cli/deps/openssl/openssl/apps/lib/columns.o /home/matteo/node/out/Release/obj.target/openssl-cli/deps/openssl/openssl/apps/lib/engine.o /home/matteo/node/out/Release/obj.target/openssl-cli/deps/openssl/openssl/apps/lib/engine_loader.o /home/matteo/node/out/Release/obj.target/openssl-cli/deps/openssl/openssl/apps/lib/fmt.o /home/matteo/node/out/Release/obj.target/openssl-cli/deps/openssl/openssl/apps/lib/http_server.o /home/matteo/node/out/Release/obj.target/openssl-cli/deps/openssl/openssl/apps/lib/names.o /home/matteo/node/out/Release/obj.target/openssl-cli/deps/openssl/openssl/apps/lib/opt.o /home/matteo/node/out/Release/obj.target/openssl-cli/deps/openssl/openssl/apps/lib/s_cb.o /home/matteo/node/out/Release/obj.target/openssl-cli/deps/openssl/openssl/apps/lib/s_socket.o /home/matteo/node/out/Release/obj.target/openssl-cli/deps/openssl/openssl/apps/lib/tlssrp_depr.o /home/matteo/node/out/Release/obj.target/deps/openssl/libopenssl.a -Wl,--end-group -ldl -pthread -llog
  /home/matteo/Android/Sdk/ndk/26.1.10909125/toolchains/llvm/prebuilt/linux-x86_64/bin/aarch64-linux-android33-clang++ -o /home/matteo/node/out/Release/obj.host/torque/deps/v8/src/torque/torque.o ../deps/v8/src/torque/torque.cc '-D_GLIBCXX_USE_CXX11_ABI=1' '-DNODE_OPENSSL_CONF_NAME=nodejs_conf' '-DNODE_OPENSSL_HAS_QUIC' '-DICU_NO_USER_DATA_OVERRIDE' '-DV8_GYP_BUILD' '-DV8_TYPED_ARRAY_MAX_SIZE_IN_HEAP=64' '-D__STDC_FORMAT_MACROS' '-DOPENSSL_NO_PINSHARED' '-DOPENSSL_THREADS' '-DOPENSSL_NO_ASM' '-DV8_TARGET_ARCH_ARM64' '-DV8_HAVE_TARGET_OS' '-DV8_TARGET_OS_ANDROID' '-DV8_EMBEDDER_STRING="-node.12"' '-DENABLE_DISASSEMBLER' '-DV8_PROMISE_INTERNAL_FIELD_COUNT=1' '-DOBJECT_PRINT' '-DV8_INTL_SUPPORT' '-DV8_ATOMIC_OBJECT_FIELD_WRITES' '-DV8_ENABLE_LAZY_SOURCE_POSITIONS' '-DV8_USE_SIPHASH' '-DV8_SHARED_RO_HEAP' '-DV8_WIN64_UNWINDING_INFO' '-DV8_ENABLE_REGEXP_INTERPRETER_THREADED_DISPATCH' '-DV8_USE_ZLIB' '-DV8_ENABLE_TURBOFAN' '-DV8_ENABLE_WEBASSEMBLY' '-DV8_ENABLE_JAVASCRIPT_PROMISE_HOOKS' '-DV8_ALLOCATION_FOLDING' '-DV8_ALLOCATION_SITE_TRACKING' '-DV8_SCRIPTORMODULE_LEGACY_LIFETIME' '-DV8_ADVANCED_BIGINT_ALGORITHMS' -I../deps/v8 -I../deps/v8/include  -msign-return-address=all -Wno-unused-parameter -Wno-return-type -Wno-invalid-offsetof -pthread -fno-omit-frame-pointer -fPIC -I/home/matteo/Android/Sdk/ndk/26.1.10909125/sources/android/cpufeatures -fdata-sections -ffunction-sections -O2 -fno-rtti -std=gnu++17 -fexceptions -MMD -MF /home/matteo/node/out/Release/.deps//home/matteo/node/out/Release/obj.host/torque/deps/v8/src/torque/torque.o.d.raw   -c
ld.lld: error: unable to find library -lrt
clang-17: error: linker command failed with exit code 1 (use -v to see invocation)
make[1]: *** [tools/v8_gypfiles/bytecode_builtins_list_generator.host.mk:182: /home/matteo/node/out/Release/bytecode_builtins_list_generator] Errore 1
make[1]: *** Attesa per i processi non terminati....
rm 109db30b704daa7e37b6b6bf14e3cf59c50e35a6.intermediate f73d378443b8a378aa897525a53a3f5c94703f4e.intermediate
make: *** [Makefile:134: node] Errore 2

Additional information

By making the following change:

['is_android', {
          'sources': [
            '<(V8_ROOT)/src/base/platform/platform-posix.cc',
            '<(V8_ROOT)/src/base/platform/platform-posix.h',
            '<(V8_ROOT)/src/base/platform/platform-posix-time.cc',
            '<(V8_ROOT)/src/base/platform/platform-posix-time.h',
          ],
          'link_settings': {
            'target_conditions': [
              ['_toolset=="host" and host_os=="linux"', {
                'libraries': [
-                  '-ldl',
+                  '-ldl',
+                  '-lc'
-                  '-lrt'
                ],
              }],
            ],
          },
          'target_conditions': [
            ['_toolset=="host"', {
              'sources': [
                '<(V8_ROOT)/src/base/debug/stack_trace_posix.cc',
                '<(V8_ROOT)/src/base/platform/platform-linux.cc',
              ],
            }, {
              'sources': [
                '<(V8_ROOT)/src/base/debug/stack_trace_android.cc',
                '<(V8_ROOT)/src/base/platform/platform-linux.cc',
              ],
            }],
          ],
        }],

in the file tools/v8_gypfiles/v8.gyp this problem no longer occurs during building.

I don't know if this could be a valid solution.

[bnoordhuis]

Android is self-serve. Go ahead if you want to submit that change as a pull request.

[MatteoBax]

When I have some time this week, I'll open a pull request.

[MatteoBax]

I apologize if I haven't opened the pull request yet, I was busy for a while and forgot about it.

The Android documentation says this:
Note that on Android, unlike Linux, there are no separate libpthread or librt libraries. That functionality is included directly in libc, which does not need to be explicitly linked against.

I'll open the pull request by tomorrow.