Linux Untested

[getnamo]

Linux build needs basic testing to confirm it works as intended.

[cpyarger]

Checking with current 4.17 branch of unreal and latest Socket.IO pull from the master branch, I will let you know how it goes. 4.17 with latest is currently a no-go. I will retry with 4.16, and the 4.16 source code release of your code.

[cpyarger]

I was unable to compile as an Engine Plugin due to the plugin not following this standard for Engine Plugins.

I am currently compiling as a Game /Project Plugin

[cpyarger]

I have tried 4.15, 4.16, 4.17 and I am getting this same error in all of them. I have tried to recompile the socketio files using boost, and nothing changes. I am at a loss for the night. Any ideas?

[10/11] Link libUE4Editor-SocketIOClient.so
/usr/bin/ld: ~Documents/Unreal Projects/MyProject/Plugins/socketio-client-ue4-15/ThirdParty/SocketIO/Lib/Linux/libsioclient.a(sio_socket.cpp.o): relocation R_X86_64_32S against `.bss' can not be used when making a shared object; recompile with -fPIC
~/Documents/Unreal Projects/MyProject/Plugins/socketio-client-ue4-15/ThirdParty/SocketIO/Lib/Linux/libsioclient.a: error adding symbols: Bad value
clang: error: linker command failed with exit code 1 (use -v to see invocation)
ERROR: UBT ERROR: Failed to produce item: ~/Documents/Unreal Projects/MyProject/Plugins/socketio-client-ue4-15/Binaries/Linux/libUE4Editor-SocketIOClient.so

[marianne-butaye]

Hello, I have the same problem and errors in logs than cpyarger. I tried your plugin with version 4.21.

[14/19] Link (ld) libUE4Editor-SocketIOClient.so
~/Documents/UnrealEngine/Engine/Extras/ThirdPartyNotUE/SDKs/HostLinux/Linux_x64/v12_clang-6.0.1-centos7/x86_64-unknown-linux-gnu/bin/x86_64-unknown-linux-gnu-ld: ~/Documents/Unreal Projects/MyProject/Plugins/SocketIOClient/Source/ThirdParty/SocketIO/Lib/Linux/libsioclient.a(sio_socket.cpp.o): relocation R_X86_64_32S against `.bss' can not be used when making a shared object; recompile with -fPIC
~/Documents/Unreal Projects/MyProject/Plugins/SocketIOClient/Source/ThirdParty/SocketIO/Lib/Linux/libsioclient.a: error adding symbols: Bad value
clang++: error: linker command failed with exit code 1 (use -v to see invocation)

[getnamo]

re-pull master (v0.12.7), it should now compile using your own linux toolchain and thus avoid these linking errors. Let me know if new issues arise.

[chuan9]

@getnamo Hi, Failed to cross-compile project, the root cause is: getnamo/TensorFlow-Unreal#11. No prebuild binary for linux, Do you have any suggestions? thx

[getnamo]

@getnamo Hi, Failed to cross-compile project, the root cause is: getnamo/tensorflow-ue4#11. No prebuild binary for linux, Do you have any suggestions? thx

What version of socket.io plugin are you using?

Tensorflow-ue4 has other issues for compiling on linux that are not related to this plugin.

[chuan9]

@getnamo Unreal 4.21.2, and it gives me tips no prebuild binary.
and I use source code instead of market plugin, cross-compile can be successful! Thanks, just FYI

[getnamo]

New binary release: https://github.com/getnamo/socketio-client-ue4/releases/tag/1.0.0 now includes linux support. Ensure you have followed basic cross compile setup for linux https://docs.unrealengine.com/en-us/Platforms/Linux/GettingStarted

[getnamo]

Working in release, closing issue. Open new issue if something crops up with linux.