yaml-cpp linking error on build

[mauricesvp]

Following the install instructions, I get the following error after colcon build --cmake-args -DCMAKE_BUILD_TYPE=Release --symlink-install:

Starting >>> ethercat_interface
Starting >>> ethercat_msgs
Finished <<< ethercat_interface [0.29s]                                                                
Starting >>> ethercat_driver
Starting >>> ethercat_generic_slave
Starting >>> ethercat_advantech_modules                                                                                      
Finished <<< ethercat_driver [0.32s]                                                                                                                                                          
Starting >>> ethercat_ati_modules
Finished <<< ethercat_advantech_modules [0.35s]
Starting >>> ethercat_beckhoff_modules
--- stderr: ethercat_generic_slave                                                                                                                                                                
/usr/bin/ld: /usr/local/lib/libyaml-cpp.a(scanner.cpp.o): warning: relocation against `_ZNSt16allocator_traitsISaIN4YAML7Scanner11FLOW_MARKEREEE8allocateERS3_m' in read-only section `.text._ZNSt11_Deque_baseIN4YAML7Scanner11FLOW_MARKERESaIS2_EE16_M_allocate_nodeEv[_ZNSt11_Deque_baseIN4YAML7Scanner11FLOW_MARKERESaIS2_EE16_M_allocate_nodeEv]'
/usr/bin/ld: /usr/local/lib/libyaml-cpp.a(exceptions.cpp.o): relocation R_X86_64_PC32 against symbol `_ZTVN4YAML9ExceptionE' can not be used when making a shared object; recompile with -fPIC
/usr/bin/ld: final link failed: bad value
collect2: error: ld returned 1 exit status
gmake[2]: *** [CMakeFiles/ethercat_generic_slave.dir/build.make:199: libethercat_generic_slave.so] Fehler 1
gmake[1]: *** [CMakeFiles/Makefile2:172: CMakeFiles/ethercat_generic_slave.dir/all] Fehler 2
gmake: *** [Makefile:160: all] Fehler 2
---
Failed   <<< ethercat_generic_slave [0.56s, exited with code 2]
Aborted  <<< ethercat_ati_modules [0.24s]
Aborted  <<< ethercat_beckhoff_modules [0.20s]
Aborted  <<< ethercat_msgs [0.90s]                              

Summary: 3 packages finished [1.20s]
  1 package failed: ethercat_generic_slave
  3 packages aborted: ethercat_ati_modules ethercat_beckhoff_modules ethercat_msgs
  1 package had stderr output: ethercat_generic_slave
  6 packages not processed

So there seems to be some problem with yaml-cpp/yaml_cpp_vendor. Has anyone encountered this before? Any guesses on how to fix this?

Thanks in advance.

[mauricesvp]

When building yaml-cpp from source, I don't get the error. Maybe the issue is a wrong/old version in the ros2 yaml-cpp vendor package.

[mcbed]

I think it can be an issue related with your setup (maybe outdated libs ?) as CI is running just fine.

[mauricesvp]

I think it can be an issue related with your setup (maybe outdated libs ?) as CI is running just fine.

Most likely this is the case, closing this issue.