I am trying to integrate a library using cocoapods...

# multiplatform

[Tim Ortel]

I am trying to integrate a library using cocoapods into my project. However, when building the project, I am getting compilation errors. It turns out that this pod has to be compiled using c++17. I verified this as I simply run the command that failed in the console and appended -std=c++17, and it succeeded. Is there any way I can set the c++ version in my gradle build file, or in any other way?

[François]

It should be possible to inject linker flag https://kotlinlang.org/docs/native-cocoapods-libraries.html#with-custom-cinterop-options

[Tim Ortel]

The cinterop task is not the problem, but the podBuild task fails

[Tim Ortel]

I just tried your suggestion, but it only seems to apply to the cinterop task

[François]

Yes, it’s for cinterop.
But, for Pod compilation, you can add/inject some code from the Podfile used by xcode.

[François]

Something like this https://stackoverflow.com/a/31804504/16543788
But, It’s not a Kotlin issue.

[Tim Ortel]

Are you thinking of injecting something like this into the podfile?

[Tim Ortel]

s.pod_target_xcconfig = {
'CLANG_CXX_LANGUAGE_STANDARD' => 'c++17'
}

[François]

This snippet is for the podspec, not the podfile, the podspec can’t be modified because it was rewritten by the plugin.

[François]

look at the link

[Tim Ortel]

While I was not able to follow your approach, I was able to find a solution. If PodBuildTask had a mechanism to supply extra command line arguments, adding the argument "CLANG_CXX_LANGUAGE_STANDARD=c++17" would make the code compile and the remaining code run.

[Tim Ortel]

I will try to create an issue for this. Maybe a mechanism to supply extra command line arguments when building pods could be added to the kotlin gradle plugin. It would be a quite straight forward solution.

[Tim Ortel]

I created this issue: https://youtrack.jetbrains.com/issue/KT-76035/Allow-extra-command-line-arguments-in-PodBuildTask

[François]

I don’t expect too much about CocoaPods, the end of life of the tool is soon.

[Tim Ortel]

What will the replacement look like?

[François]

FYI, the end of Cocoapods is end of 2026, there will be no new updated pod; read the blog’s articles for the details.

For the replacement, currently, it’s Swift Package Manager, I made a plugin to support it on KMP.
But I don’t know about an official replacement for KMP iOS.

[François]

SPM is now mainstream on Swift iOS, and Cocoapods is more and more abandoned by the devs.