I am facing the same linker error:
undefined reference to
`grpc::Timepoint2Timespec(std::chrono::time_point<std::chrono::_V2::system_clock,
std::chrono::duration<long, std::ratio<1l, 1000000000l> > > const&,
gpr_timespec*)'
collect2: error: ld returned 1 exit status
Previously it was working fine when my code was on following version of
Linux:
Linux 2.6.32-504.63.3.el6.x86_64
Then I moved my code to another machine, where I started facing the linker
error. Linux version of new machine:
Linux 3.10.0-514.26.2.el7.x86_64
Any idea if there is any difference in behavior of CMake on these 2
versions of Linux?
Thank you in advance!!
On Wednesday, 28 September 2016 05:11:41 UTC+5:30, Masood Malekghassemi
wrote:
>
> Unfortunately our CMake support is still 'experimental'. If you do find
> specifically what's breaking for you and file a bug on whatever flags are
> missing wherever and such, we'd appreciate it! Until we're past
> 'experimental' support, all I can suggest is to use vanilla make or to dig
> deep: like checking the symbols in the compiled object files, maybe see if
> anything's missing from them, look through #defines and see if your system
> isn't getting properly autoconfigured for by the preprocessor at
> compilation time, or even files containing the missing symbols themselves
> missing from commands spat out during a verbose build process. We'd like to
> know what's gone wrong as well.
>
> On Tuesday, September 20, 2016 at 5:11:43 AM UTC-7, Okke Hendriks wrote:
>>
>>
>> In function
>> `grpc::TimePoint<std::chrono::time_point<std::chrono::_V2::system_clock,
>> std::chrono::duration<long, std::ratio<1l, 1000000000l> > >
>> >::TimePoint(std::chrono::time_point<std::chrono::_V2::system_clock,
>> std::chrono::duration<long, std::ratio<1l, 1000000000l> > > const&)':
>> prototype_a.cpp:(.text._ZN4grpc9TimePointINSt6chrono10time_pointINS1_3_V212system_clockENS1_8durationIlSt5ratioILl1ELl1000000000EEEEEEEC2ERKS9_[_ZN4grpc9TimePointINSt6chrono10time_pointINS1_3_V212system_clockENS1_8durationIlSt5ratioILl1ELl1000000000EEEEEEEC5ERKS9_]+0x1f):
>>
>> undefined reference to `grpc::Timepoint2Timespec(std::chrono::time_point<
>> std::chrono::_V2::system_clock, std::chrono::duration<long, std::ratio<1l
>> , 1000000000l> > > const&, gpr_timespec*)'
>> collect2: error: ld returned 1 exit status
>>
>> I am getting the above linker error when adding the following lines to my
>> 'procom' library.
>>
>> std::chrono::system_clock::time_point
>> deadline(std::chrono::system_clock::now() + std::chrono::seconds(10));
>> _channel->WaitForConnected(deadline);
>>
>> I am linking 'procom' with the following CMake commands:
>>
>> add_library(procom SHARED src/procom.cpp)
>> target_link_libraries(procom pthread ${ZLIB_LIBRARIES} libgpr.a libgrpc++
>> _unsecure.a libgrpc_unsecure.a libprotobuf.a)
>>
>> Which I am using later on in a 'prototype_a' application, which is being
>> build with the following CMake commands:
>>
>> add_executable(proto_a src/prototype/prototype_a.cpp)
>> target_link_libraries(proto_a procom)
>>
>> I would appreciate it very much if someone has an idea of what I am doing
>> wrong? :)
>> Thank you in advance!
>>
>
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