GRPC helloworld client run with thousands of "undefined references"
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3rd Party Software
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Hello everyone!
Before I post this new topic, I have searched the forum and read some similar questions, such as [GRPC helloworld server "undefined references"] but found no help.
I have already built grpc, installed grpc, built example and run example/helloworld successfully. When I want to add grpc to my own qt qmake program, thousands of "undefined references" errors occur. With so many errors in the same format, I must do something wrong, but where is it? Thank you in advance!
enviroment:
os: ubuntu 20.04 x86_64 Qt: 6.3.1 (online install) gcc: 9.4.0 grpc: 1.48.0 (build with -DCMAKE_CXX_STANDARD=17) protoc: 3.19.4my .pro file:
QT -= gui CONFIG += c++17 console CONFIG -= app_bundle SOURCES += \ main.cpp include(grpc.pri)grpc.pri:
grpc_root_dir = /home/kagami/opensource/grpc grpc_lib = $${grpc_root_dir}/lib INCLUDEPATH += $${grpc_root_dir}/include \ $${grpc_root_dir} DEPENDPATH += $${grpc_root_dir}/include \ $${grpc_root_dir} HEADERS += $$PWD/grpc/helloworld.grpc.pb.h \ $$PWD/grpc/helloworld.pb.h SOURCES += $$PWD/grpc/helloworld.grpc.pb.cc \ $$PWD/grpc/helloworld.pb.cc LIBS += -L$${grpc_lib} -labsl_bad_any_cast_impl LIBS += -L$${grpc_lib} -labsl_bad_optional_access LIBS += -L$${grpc_lib} -labsl_bad_variant_access LIBS += -L$${grpc_lib} -labsl_base LIBS += -L$${grpc_lib} -labsl_city LIBS += -L$${grpc_lib} -labsl_civil_time LIBS += -L$${grpc_lib} -labsl_cord LIBS += -L$${grpc_lib} -labsl_cord_internal LIBS += -L$${grpc_lib} -labsl_cordz_functions LIBS += -L$${grpc_lib} -labsl_cordz_handle LIBS += -L$${grpc_lib} -labsl_cordz_info LIBS += -L$${grpc_lib} -labsl_cordz_sample_token LIBS += -L$${grpc_lib} -labsl_debugging_internal LIBS += -L$${grpc_lib} -labsl_demangle_internal LIBS += -L$${grpc_lib} -labsl_examine_stack LIBS += -L$${grpc_lib} -labsl_exponential_biased LIBS += -L$${grpc_lib} -labsl_failure_signal_handler LIBS += -L$${grpc_lib} -labsl_flags LIBS += -L$${grpc_lib} -labsl_flags_commandlineflag LIBS += -L$${grpc_lib} -labsl_flags_commandlineflag_internal LIBS += -L$${grpc_lib} -labsl_flags_config LIBS += -L$${grpc_lib} -labsl_flags_internal LIBS += -L$${grpc_lib} -labsl_flags_marshalling LIBS += -L$${grpc_lib} -labsl_flags_parse LIBS += -L$${grpc_lib} -labsl_flags_private_handle_accessor LIBS += -L$${grpc_lib} -labsl_flags_program_name LIBS += -L$${grpc_lib} -labsl_flags_reflection LIBS += -L$${grpc_lib} -labsl_flags_usage LIBS += -L$${grpc_lib} -labsl_flags_usage_internal LIBS += -L$${grpc_lib} -labsl_graphcycles_internal LIBS += -L$${grpc_lib} -labsl_hash LIBS += -L$${grpc_lib} -labsl_hashtablez_sampler LIBS += -L$${grpc_lib} -labsl_int128 LIBS += -L$${grpc_lib} -labsl_leak_check LIBS += -L$${grpc_lib} -labsl_log_severity LIBS += -L$${grpc_lib} -labsl_low_level_hash LIBS += -L$${grpc_lib} -labsl_malloc_internal LIBS += -L$${grpc_lib} -labsl_periodic_sampler LIBS += -L$${grpc_lib} -labsl_random_distributions LIBS += -L$${grpc_lib} -labsl_random_internal_distribution_test_util LIBS += -L$${grpc_lib} -labsl_random_internal_platform LIBS += -L$${grpc_lib} -labsl_random_internal_pool_urbg LIBS += -L$${grpc_lib} -labsl_random_internal_randen LIBS += -L$${grpc_lib} -labsl_random_internal_randen_hwaes LIBS += -L$${grpc_lib} -labsl_random_internal_randen_hwaes_impl LIBS += -L$${grpc_lib} -labsl_random_internal_randen_slow LIBS += -L$${grpc_lib} -labsl_random_internal_seed_material LIBS += -L$${grpc_lib} -labsl_random_seed_gen_exception LIBS += -L$${grpc_lib} -labsl_random_seed_sequences LIBS += -L$${grpc_lib} -labsl_raw_hash_set LIBS += -L$${grpc_lib} -labsl_raw_logging_internal LIBS += -L$${grpc_lib} -labsl_scoped_set_env LIBS += -L$${grpc_lib} -labsl_spinlock_wait LIBS += -L$${grpc_lib} -labsl_stacktrace LIBS += -L$${grpc_lib} -labsl_status LIBS += -L$${grpc_lib} -labsl_statusor LIBS += -L$${grpc_lib} -labsl_strerror LIBS += -L$${grpc_lib} -labsl_str_format_internal LIBS += -L$${grpc_lib} -labsl_strings LIBS += -L$${grpc_lib} -labsl_strings_internal LIBS += -L$${grpc_lib} -labsl_symbolize LIBS += -L$${grpc_lib} -labsl_synchronization LIBS += -L$${grpc_lib} -labsl_throw_delegate LIBS += -L$${grpc_lib} -labsl_time LIBS += -L$${grpc_lib} -labsl_time_zone LIBS += -L$${grpc_lib} -laddress_sorting LIBS += -L$${grpc_lib} -lcares LIBS += -L$${grpc_lib} -lcrypto LIBS += -L$${grpc_lib} -lgpr LIBS += -L$${grpc_lib} -lgrpc++ LIBS += -L$${grpc_lib} -lgrpc LIBS += -L$${grpc_lib} -lgrpc++_alts LIBS += -L$${grpc_lib} -lgrpc++_error_details LIBS += -L$${grpc_lib} -lgrpc_plugin_support LIBS += -L$${grpc_lib} -lgrpcpp_channelz LIBS += -L$${grpc_lib} -lgrpc++_reflection LIBS += -L$${grpc_lib} -lgrpc++_unsecure LIBS += -L$${grpc_lib} -lgrpc_unsecure LIBS += -L$${grpc_lib} -lprotobuf LIBS += -L$${grpc_lib} -lprotobuf-lite LIBS += -L$${grpc_lib} -lprotoc LIBS += -L$${grpc_lib} -lre2 LIBS += -L$${grpc_lib} -lssl LIBS += -L$${grpc_lib} -lupb LIBS += -L$${grpc_lib} -lz PRE_TARGETDEPS += $${grpc_lib}/libabsl_bad_any_cast_impl.a PRE_TARGETDEPS += $${grpc_lib}/libabsl_bad_optional_access.a PRE_TARGETDEPS += $${grpc_lib}/libabsl_bad_variant_access.a PRE_TARGETDEPS += $${grpc_lib}/libabsl_base.a PRE_TARGETDEPS += $${grpc_lib}/libabsl_city.a PRE_TARGETDEPS += $${grpc_lib}/libabsl_civil_time.a PRE_TARGETDEPS += $${grpc_lib}/libabsl_cord.a PRE_TARGETDEPS += $${grpc_lib}/libabsl_cord_internal.a PRE_TARGETDEPS += $${grpc_lib}/libabsl_cordz_functions.a PRE_TARGETDEPS += $${grpc_lib}/libabsl_cordz_handle.a PRE_TARGETDEPS += $${grpc_lib}/libabsl_cordz_info.a PRE_TARGETDEPS += $${grpc_lib}/libabsl_cordz_sample_token.a PRE_TARGETDEPS += $${grpc_lib}/libabsl_debugging_internal.a PRE_TARGETDEPS += $${grpc_lib}/libabsl_demangle_internal.a PRE_TARGETDEPS += $${grpc_lib}/libabsl_examine_stack.a PRE_TARGETDEPS += $${grpc_lib}/libabsl_exponential_biased.a PRE_TARGETDEPS += $${grpc_lib}/libabsl_failure_signal_handler.a PRE_TARGETDEPS += $${grpc_lib}/libabsl_flags.a PRE_TARGETDEPS += $${grpc_lib}/libabsl_flags_commandlineflag.a PRE_TARGETDEPS += $${grpc_lib}/libabsl_flags_commandlineflag_internal.a PRE_TARGETDEPS += $${grpc_lib}/libabsl_flags_config.a PRE_TARGETDEPS += $${grpc_lib}/libabsl_flags_internal.a PRE_TARGETDEPS += $${grpc_lib}/libabsl_flags_marshalling.a PRE_TARGETDEPS += $${grpc_lib}/libabsl_flags_parse.a PRE_TARGETDEPS += $${grpc_lib}/libabsl_flags_private_handle_accessor.a PRE_TARGETDEPS += $${grpc_lib}/libabsl_flags_program_name.a PRE_TARGETDEPS += $${grpc_lib}/libabsl_flags_reflection.a PRE_TARGETDEPS += $${grpc_lib}/libabsl_flags_usage.a PRE_TARGETDEPS += $${grpc_lib}/libabsl_flags_usage_internal.a PRE_TARGETDEPS += $${grpc_lib}/libabsl_graphcycles_internal.a PRE_TARGETDEPS += $${grpc_lib}/libabsl_hash.a PRE_TARGETDEPS += $${grpc_lib}/libabsl_hashtablez_sampler.a PRE_TARGETDEPS += $${grpc_lib}/libabsl_int128.a PRE_TARGETDEPS += $${grpc_lib}/libabsl_leak_check.a PRE_TARGETDEPS += $${grpc_lib}/libabsl_log_severity.a PRE_TARGETDEPS += $${grpc_lib}/libabsl_low_level_hash.a PRE_TARGETDEPS += $${grpc_lib}/libabsl_malloc_internal.a PRE_TARGETDEPS += $${grpc_lib}/libabsl_periodic_sampler.a PRE_TARGETDEPS += $${grpc_lib}/libabsl_random_distributions.a PRE_TARGETDEPS += $${grpc_lib}/libabsl_random_internal_distribution_test_util.a PRE_TARGETDEPS += $${grpc_lib}/libabsl_random_internal_platform.a PRE_TARGETDEPS += $${grpc_lib}/libabsl_random_internal_pool_urbg.a PRE_TARGETDEPS += $${grpc_lib}/libabsl_random_internal_randen.a PRE_TARGETDEPS += $${grpc_lib}/libabsl_random_internal_randen_hwaes.a PRE_TARGETDEPS += $${grpc_lib}/libabsl_random_internal_randen_hwaes_impl.a PRE_TARGETDEPS += $${grpc_lib}/libabsl_random_internal_randen_slow.a PRE_TARGETDEPS += $${grpc_lib}/libabsl_random_internal_seed_material.a PRE_TARGETDEPS += $${grpc_lib}/libabsl_random_seed_gen_exception.a PRE_TARGETDEPS += $${grpc_lib}/libabsl_random_seed_sequences.a PRE_TARGETDEPS += $${grpc_lib}/libabsl_raw_hash_set.a PRE_TARGETDEPS += $${grpc_lib}/libabsl_raw_logging_internal.a PRE_TARGETDEPS += $${grpc_lib}/libabsl_scoped_set_env.a PRE_TARGETDEPS += $${grpc_lib}/libabsl_spinlock_wait.a PRE_TARGETDEPS += $${grpc_lib}/libabsl_stacktrace.a PRE_TARGETDEPS += $${grpc_lib}/libabsl_status.a PRE_TARGETDEPS += $${grpc_lib}/libabsl_statusor.a PRE_TARGETDEPS += $${grpc_lib}/libabsl_strerror.a PRE_TARGETDEPS += $${grpc_lib}/libabsl_str_format_internal.a PRE_TARGETDEPS += $${grpc_lib}/libabsl_strings.a PRE_TARGETDEPS += $${grpc_lib}/libabsl_strings_internal.a PRE_TARGETDEPS += $${grpc_lib}/libabsl_symbolize.a PRE_TARGETDEPS += $${grpc_lib}/libabsl_synchronization.a PRE_TARGETDEPS += $${grpc_lib}/libabsl_throw_delegate.a PRE_TARGETDEPS += $${grpc_lib}/libabsl_time.a PRE_TARGETDEPS += $${grpc_lib}/libabsl_time_zone.a PRE_TARGETDEPS += $${grpc_lib}/libaddress_sorting.a PRE_TARGETDEPS += $${grpc_lib}/libcares.a PRE_TARGETDEPS += $${grpc_lib}/libcrypto.a PRE_TARGETDEPS += $${grpc_lib}/libgpr.a PRE_TARGETDEPS += $${grpc_lib}/libgrpc++.a PRE_TARGETDEPS += $${grpc_lib}/libgrpc.a PRE_TARGETDEPS += $${grpc_lib}/libgrpc++_alts.a PRE_TARGETDEPS += $${grpc_lib}/libgrpc++_error_details.a PRE_TARGETDEPS += $${grpc_lib}/libgrpc_plugin_support.a PRE_TARGETDEPS += $${grpc_lib}/libgrpcpp_channelz.a PRE_TARGETDEPS += $${grpc_lib}/libgrpc++_reflection.a PRE_TARGETDEPS += $${grpc_lib}/libgrpc++_unsecure.a PRE_TARGETDEPS += $${grpc_lib}/libgrpc_unsecure.a PRE_TARGETDEPS += $${grpc_lib}/libprotobuf.a PRE_TARGETDEPS += $${grpc_lib}/libprotobuf-lite.a PRE_TARGETDEPS += $${grpc_lib}/libprotoc.a PRE_TARGETDEPS += $${grpc_lib}/libre2.a PRE_TARGETDEPS += $${grpc_lib}/libssl.a PRE_TARGETDEPS += $${grpc_lib}/libupb.a PRE_TARGETDEPS += $${grpc_lib}/libz.a message($${grpc_root_dir}) message($${grpc_lib}) message($$LIBS)I include every lib in grpc/lib dir to .pro file. My protoc-generate-source-files are copied from example/helloworld
error snapshot:
I have been stuck here for quite a long time, how to solve this issue?
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Hi,
Is it a dummy implementation to test integration or a full blown service ? If the latter I would start by something simpler just to minimize the surface of possible issues.
One thing you can simplify is remove all the duplicated -L entries. You only need it once. And the other will just fill the linker command for not benefit (and possibly trigger an too big input).
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@SGaist Thanks for your reply~
I happened to see a comment in stackoverflow. After I rebuild grpc with -DBUILD_SHARED_LIBS=ON and link these shared libs instead of static ones to my qt project, my compilation succeeds. I have no idea why it works because Qt Creator generates the same expressions when introducing static link libraries and dynamic libraries except keyword "PRE_TARGETDEPS".
But when I run this simple helloworld client(copied from grpc/example/helloworld), it hangs when instantiating "GreeterClient". No error, crash or time out, just hangs forever. This is very confusing because the official grpc/example/helloworld (I follow the tutorial to build it with cmake, also link to shared libs) runs well.
I am still tracing this problem, thank you very much.
my grpc build command:
/home/kagami/cpp/cmake-3.23.3-linux-x86_64/bin/cmake' -DCMAKE_CXX_STANDARD=17 -DBUILD_SHARED_LIBS=ON -DgRPC_INSTALL=ON -DgRPC_BUILD_TESTS=OFF -DCMAKE_INSTALL_PREFIX=/home/kagami/opensource/grpc_s ../..Following your suggestion, I have revised my grpc.pri:
grpc_root_dir = /home/kagami/opensource/grpc_s grpc_lib = $${grpc_root_dir}/lib INCLUDEPATH += $${grpc_root_dir}/include \ $${grpc_root_dir} DEPENDPATH += $${grpc_root_dir}/include \ $${grpc_root_dir} HEADERS += $$PWD/grpc/helloworld.grpc.pb.h \ $$PWD/grpc/helloworld.pb.h SOURCES += $$PWD/grpc/helloworld.grpc.pb.cc \ $$PWD/grpc/helloworld.pb.cc LIBS += -L$${grpc_lib} \ -labsl_bad_any_cast_impl \ -labsl_bad_optional_access \ -labsl_bad_variant_access \ -labsl_base \ -labsl_city \ -labsl_civil_time \ -labsl_cord \ -labsl_cord_internal \ -labsl_cordz_functions \ -labsl_cordz_handle \ -labsl_cordz_info \ -labsl_cordz_sample_token \ -labsl_debugging_internal \ -labsl_demangle_internal \ -labsl_examine_stack \ -labsl_exponential_biased \ -labsl_failure_signal_handler \ -labsl_flags \ -labsl_flags_commandlineflag \ -labsl_flags_commandlineflag_internal \ -labsl_flags_config \ -labsl_flags_internal \ -labsl_flags_marshalling \ -labsl_flags_parse \ -labsl_flags_private_handle_accessor \ -labsl_flags_program_name \ -labsl_flags_reflection \ -labsl_flags_usage \ -labsl_flags_usage_internal \ -labsl_graphcycles_internal \ -labsl_hash \ -labsl_hashtablez_sampler \ -labsl_int128 \ -labsl_leak_check \ -labsl_log_severity \ -labsl_low_level_hash \ -labsl_malloc_internal \ -labsl_periodic_sampler \ -labsl_random_distributions \ -labsl_random_internal_distribution_test_util \ -labsl_random_internal_platform \ -labsl_random_internal_pool_urbg \ -labsl_random_internal_randen \ -labsl_random_internal_randen_hwaes \ -labsl_random_internal_randen_hwaes_impl \ -labsl_random_internal_randen_slow \ -labsl_random_internal_seed_material \ -labsl_random_seed_gen_exception \ -labsl_random_seed_sequences \ -labsl_raw_hash_set \ -labsl_raw_logging_internal \ -labsl_scoped_set_env \ -labsl_spinlock_wait \ -labsl_stacktrace \ -labsl_status \ -labsl_statusor \ -labsl_strerror \ -labsl_str_format_internal \ -labsl_strings \ -labsl_strings_internal \ -labsl_symbolize \ -labsl_synchronization \ -labsl_throw_delegate \ -labsl_time \ -labsl_time_zone \ -laddress_sorting \ -lcares \ -lcrypto \ -lgpr \ -lgrpc++ \ -lgrpc \ -lgrpc++_alts \ -lgrpc++_error_details \ -lgrpc_plugin_support \ -lgrpcpp_channelz \ -lgrpc++_reflection \ -lgrpc++_unsecure \ -lgrpc_unsecure \ -lprotobuf \ -lprotobuf-lite \ -lprotoc \ -lre2 \ -lssl \ -lupb \ -lz message($${grpc_lib}) message($$LIBS) -
I found that by calling grpc_init() before calling the grpc::CreateChannel(...) sovled my problem, my simple demo is finally running. According to the open issue above, this "stuck in infinite loop" problem seems to be related to link.
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One thing about the static linking problem: it might be as simple as not having the libraries in the correct order.
