undefined reference to

[ccoqueiro]

Hello community,

I'm trying to compile my first code with the opentelemetry SDK, but I'm with the error below, has anyone been through this? Can you help?

usr/bin/ld: /tmp/ccC5ZrEp.o: in function (anonymous namespace)::InitTracer()': helloworld_v1.cpp:(.text+0x236): undefined reference to opentelemetry::v1::exporter::jaeger::JaegerExporter::JaegerExporter(opentelemetry::v1::exporter::jaeger::JaegerExporterOptions const&)'
/usr/bin/ld: helloworld_v1.cpp:(.text+0x2f1): undefined reference to opentelemetry::v1::sdk::resource::Resource::Create(opentelemetry::v1::sdk::common::AttributeMap const&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)' /usr/bin/ld: helloworld_v1.cpp:(.text+0x3ab): undefined reference to opentelemetry::v1::sdk::trace::TracerProvider::TracerProvider(std::unique_ptr<opentelemetry::v1::sdk::trace::SpanProcessor, std::default_deleteopentelemetry::v1::sdk::trace::SpanProcessor >, opentelemetry::v1::sdk::resource::Resource, std::unique_ptr<opentelemetry::v1::sdk::trace::Sampler, std::default_deleteopentelemetry::v1::sdk::trace::Sampler >, std::unique_ptr<opentelemetry::v1::sdk::trace::IdGenerator, std::default_deleteopentelemetry::v1::sdk::trace::IdGenerator >)'
/usr/bin/ld: helloworld_v1.cpp:(.text+0x4f8): undefined reference to opentelemetry::v1::sdk::resource::Resource::Create(opentelemetry::v1::sdk::common::AttributeMap const&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)' /usr/bin/ld: helloworld_v1.cpp:(.text+0x516): undefined reference to opentelemetry::v1::sdk::resource::Resource::GetAttributes() const'
/usr/bin/ld: /tmp/ccC5ZrEp.o: in function opentelemetry::v1::sdk::trace::RandomIdGenerator::RandomIdGenerator()': helloworld_v1.cpp:(.text._ZN13opentelemetry2v13sdk5trace17RandomIdGeneratorC2Ev[_ZN13opentelemetry2v13sdk5trace17RandomIdGeneratorC5Ev]+0x1f): undefined reference to vtable for opentelemetry::v1::sdk::trace::RandomIdGenerator'
collect2: error: ld returned 1 exit status

My code:

#include "opentelemetry/exporters/jaeger/jaeger_exporter.h"
#include "opentelemetry/sdk/trace/simple_processor.h"
#include "opentelemetry/sdk/trace/tracer_provider.h"
#include "opentelemetry/trace/provider.h"
#include

namespace trace = opentelemetry::trace;
namespace nostd = opentelemetry::nostd;
namespace trace_sdk = opentelemetry::sdk::trace;
namespace jaeger = opentelemetry::exporter::jaeger;

namespace
{
opentelemetry::exporter::jaeger::JaegerExporterOptions opts;
void InitTracer()
{
opts.transport_format = opentelemetry::exporter::jaeger::TransportFormat::kThriftHttp;
opts.endpoint = "localhost";
opts.server_port = 6831;
auto exporter = std::unique_ptr<trace_sdk::SpanExporter>(new jaeger::JaegerExporter(opts));
auto processor = std::unique_ptr<trace_sdk::SpanProcessor>(
new trace_sdk::SimpleSpanProcessor(std::move(exporter)));
auto provider =
nostd::shared_ptrtrace::TracerProvider(new trace_sdk::TracerProvider(std::move(processor)));
// Set the global trace provider
trace::Provider::SetTracerProvider(provider);
auto resource_attributes = opentelemetry::sdk::resource::ResourceAttributes
{
{"service.name", "hello world"},
{"deployment.environment", "desenv"}
};
auto resource = opentelemetry::sdk::resource::Resource::Create(resource_attributes);
auto received_attributes = resource.GetAttributes();
}
} // namespace

int main() {
std::cout << "Hello World!";
InitTracer();
return 0;
}

[owent]

What's your build system and what's your link options?
Do you link sdk and jaeger exporter?

[AkshataKulkarni2504]

hi, I am facing the same issue. can you let me know how you resolved it.

[lalitb]

You need to build otel-cpp with WITH_ZIPKIN cmake option enabled. This will build the otel zipkin exporter. And then link that library while building your dice-server.

[AkshataKulkarni2504]

I built Otel-cpp with Zipkin option. could you help me with the name of the library that needs to be linked with dice server for zipkin exporter.

[lalitb]

It should be libopentelemetry_exporter_zipkin_trace

[AkshataKulkarni2504]

Thank you. the issue got resolved.

[lalitb]

Thanks. Let us know if the instructions here were not sufficient - https://opentelemetry.io/docs/languages/cpp/getting-started/. The only difference I think was that these instructions were for using the OStream exporter, while you were trying to use the Zipkin exporter.