topic Re: Linking failure for tiny code using YDK-CPP in Tools

Linking failure for tiny code using YDK-CPP

Alexandr_Limonov — Tue, 10 Sep 2019 16:34:05 GMT

Hi !
Could you plz help me and point what am doing wrong ?

I compiled core ydk-cpp core , ydk-ietf and, ios-xr from source.
However during attempt of building of my tiny code I have huge amount of linker failures :

/usr/bin/x86_64-linux-gnu-g++-5 -g3 -std=c++11 -pthread \

-L/usr/local/lib main.cpp output.o \

-lydk -lydk_cisco_ios_xr -lydk_ietf -lpcre -ldl

(build log in attachement)

Tiny code is:

#include <iostream>

#include <memory>

#include "ydk/types.hpp"

#include "ydk/netconf_provider.hpp"

#include "ydk/crud_service.hpp"

#include <spdlog/spdlog.h>

#include "ydk_cisco_ios_xr/Cisco_IOS_XR_ipv4_bgp_cfg.hpp"

#include "ydk_cisco_ios_xr/Cisco_IOS_XR_ipv4_bgp_datatypes.hpp"

// #include "args_parser.h"

using namespace ydk;

using namespace cisco_ios_xr::Cisco_IOS_XR_ipv4_bgp_cfg;

using namespace cisco_ios_xr::Cisco_IOS_XR_ipv4_bgp_datatypes;

using namespace std;

int main(){

auto bgp = make_unique<Bgp>();

auto instance = make_unique<Bgp::Instance>();

auto instance_as = make_unique<Bgp::Instance::InstanceAs>();

instance_as->as = 65001;

instance->instance_as.append(move(instance_as));

bgp->instance.append(move(instance));

return 0;

}

What do I miss here ?

Thanks !

Re: Linking failure for tiny code using YDK-CPP

ygorelik — Tue, 10 Sep 2019 17:02:30 GMT

Hi Alezandr

I suggest you to look at CMakeLists.txt in C++ samples. Here what we have for the linker:

target_link_libraries(${sample}
${ydk_location}
${ydk_openconfig_location}
${ydk_cisco_ios_xr_location}
${ydk_cisco_ios_xe_location}
${xml2_location}
${curl_location}
${ssh_location}
${ssh_threads_location}
${pcre_location}
${xslt_location}
${pthread_location}
${dl_location}
-rdynamic
)

First, add all the missing libraries and parameters.

Second, try to move the bundle library to the front; sometimes that helps.

Regards,

Yan

Re: Linking failure for tiny code using YDK-CPP

Alexandr_Limonov — Tue, 10 Sep 2019 20:28:10 GMT

That helped, Thanks !