Building plugin on Linux

Onionman · February 24, 2023, 9:55pm

Hello! I was interested in building the plugin on Linux, I heard it might be possible, and was curious if there was a guide out there on how to do that? I apologize for the very basic question.

Thank you!

Kevin_Ring · February 26, 2023, 5:53am

We don’t officially support Linux yet, but last time I tried it, it did build and run successfully. The developer setup instructions should get you started:

github.com

CesiumGS/cesium-unity/blob/main/Documentation~/developer-setup.md

# Overview

This is a summary of the setup and workflows for developers who want to modify the Cesium for Unity plugin. If you just want to use Cesium for Unity in your own applications, see the main [README](../README.md).

## :computer: Building Cesium for Unity

### Prerequisites

* CMake v3.15 or later (the latest version is recommended)
* [.NET SDK v6.0 or later](https://dotnet.microsoft.com/en-us/download/dotnet/6.0)
* If you're using Visual Studio, you need Visual Studio 2022.
* Unity 2021.3+ (the latest version of the Unity 2021.3 LTS release is recommended)
* On Windows, support for long file paths must be enabled, or you are likely to see build errors. See [Maximum Path Length Limitation](https://learn.microsoft.com/en-us/windows/win32/fileio/maximum-file-path-limitation?tabs=registry#enable-long-paths-in-windows-10-version-1607-and-later).

The built Cesium for Unity Assembly will run on much older versions of .NET, including the version of Mono included in Unity. However, these very recent versions are required for the C#<->C++ interop code generator (Reinterop).

To make sure things are set up correctly, open a command-prompt (PowerShell is a good choice on Windows) and run:

* `dotnet --version` and verify that it reports 6.0 or later
* `cmake --version` and verify that it reports 3.15 or later

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Let us know if you run into problems.

Kevin

Onionman · February 26, 2023, 5:58pm

Yes, I was able to get it built and running, thank you!

luo · April 7, 2023, 6:58am

hello,
I am building on Linux and have encountered some issues.Could you please help me take a look? Thank you.

the command executed is “cmake --build build -j14 --target install --config RelWithDebInfo”

/opt/rh/devtoolset-11/root/usr/include/c++/11/bits/hashtable_policy.h:1812:13: required from ‘struct std::__detail::_Hashtable_alloc<std::allocator<std::__detail::_Hash_node<std::pair<const std::basic_string, DotNet::CesiumForUnity::CesiumCredit>, true> > >’
/opt/rh/devtoolset-11/root/usr/include/c++/11/bits/hashtable_policy.h:811:13: required from ‘struct std::__detail::_Insert_base<std::basic_string, std::pair<const std::basic_string, DotNet::CesiumForUnity::CesiumCredit>, std::allocator<std::pair<const std::basic_string, DotNet::CesiumForUnity::CesiumCredit> >, std::__detail::_Select1st, std::equal_to<std::basic_string >, std::hash<std::basic_string >, std::__detail::_Mod_range_hashing, std::__detail::_Default_ranged_hash, std::__detail::_Prime_rehash_policy, std::__detail::_Hashtable_traits<true, false, true> >’
/opt/rh/devtoolset-11/root/usr/include/c++/11/bits/hashtable_policy.h:1004:12: required from ‘struct std::__detail::_Insert<std::basic_string, std::pair<const std::basic_string, DotNet::CesiumForUnity::CesiumCredit>, std::allocator<std::pair<const std::basic_string, DotNet::CesiumForUnity::CesiumCredit> >, std::__detail::_Select1st, std::equal_to<std::basic_string >, std::hash<std::basic_string >, std::__detail::_Mod_range_hashing, std::__detail::_Default_ranged_hash, std::__detail::_Prime_rehash_policy, std::__detail::_Hashtable_traits<true, false, true>, false>’
/opt/rh/devtoolset-11/root/usr/include/c++/11/bits/hashtable.h:180:11: required from ‘class std::_Hashtable<std::basic_string, std::pair<const std::basic_string, DotNet::CesiumForUnity::CesiumCredit>, std::allocator<std::pair<const std::basic_string, DotNet::CesiumForUnity::CesiumCredit> >, std::__detail::_Select1st, std::equal_to<std::basic_string >, std::hash<std::basic_string >, std::__detail::_Mod_range_hashing, std::__detail::_Default_ranged_hash, std::__detail::_Prime_rehash_policy, std::__detail::_Hashtable_traits<true, false, true> >’
/opt/rh/devtoolset-11/root/usr/include/c++/11/bits/unordered_map.h:105:18: required from ‘class std::unordered_map<std::basic_string, DotNet::CesiumForUnity::CesiumCredit>’
/data/unityWS/cesium/CesiumForUnityBuildProject/Packages/com.cesium.unity/native~/Runtime/src/CesiumCreditSystemImpl.h:46:7: required from here
/opt/rh/devtoolset-11/root/usr/include/c++/11/bits/stl_pair.h:218:11: error: ‘std::pair<_T1, _T2>::second’ has incomplete type
218 | _T2 second; ///< The second member
| ^~~~~~
In file included from /data/unityWS/cesium/CesiumForUnityBuildProject/Packages/com.cesium.unity/native~/Runtime/src/CesiumCreditSystemImpl.h:5,
from /data/unityWS/cesium/CesiumForUnityBuildProject/Packages/com.cesium.unity/native~/Runtime/generated-Editor/include/DotNet/CesiumForUnity/CesiumCreditSystem.h:9,
from /data/unityWS/cesium/CesiumForUnityBuildProject/Packages/com.cesium.unity/native~/Runtime/src/Cesium3DTilesetImpl.h:5,
from /data/unityWS/cesium/CesiumForUnityBuildProject/Packages/com.cesium.unity/native~/Runtime/generated-Editor/include/DotNet/CesiumForUnity/Cesium3DTileset.h:9,
from /data/unityWS/cesium/CesiumForUnityBuildProject/Packages/com.cesium.unity/native~/Runtime/generated-Editor/src/DotNet/CesiumForUnity/CesiumIonRasterOverlay.cpp:20:
/data/unityWS/cesium/CesiumForUnityBuildProject/Packages/com.cesium.unity/native~/Runtime/generated-Editor/include/DotNet/System/Collections/Generic/List1.h:18:7: note: forward declaration of ‘class DotNet::CesiumForUnity::CesiumCredit’
18 | class CesiumCredit;
| ^~~~~~~~~~~~
gmake[2]: *** [Runtime/CMakeFiles/CesiumForUnityNative-Runtime.dir/generated-Editor/src/DotNet/CesiumForUnity/CesiumDebugColorizeTilesRasterOverlay.cpp.o] Error 1
gmake[2]: *** [Runtime/CMakeFiles/CesiumForUnityNative-Runtime.dir/generated-Editor/src/DotNet/CesiumForUnity/CesiumIonRasterOverlay.cpp.o] Error 1
gmake[1]: *** [Runtime/CMakeFiles/CesiumForUnityNative-Runtime.dir/all] Error 2
gmake: *** [all] Error 2