the 30 seconds should only be spent on the first build. incremental build should only rebuild the fi...

# build-tools

[kirillrakhman]

the 30 seconds should only be spent on the first build. incremental build should only rebuild the files you changed

[mingkangpan]

yeah, but if you switch branches, you have almost to clean again or IDE throws an error, or if you introduce a new class or method or field, the generateStubs need to be invoked it just much slower than a "normal" incremental build and on slower PC it costs time 😕

[yan]

or IDE throws an error

What error are you talking about?

Stub generation task supports incremental compilation, just as the normal compileKotlin task. If it isn’t true for you then it’s a bug.

[mingkangpan]

does kotlin annotation processing also support incremental compilation?

[yan]

kaptGenerateStubs…Kotlin task supports incremental compilation. kapt...Kotlin (the second task) does not (and it’s technically impossible).

[mingkangpan]

@yan could you explain me why it is impossible to incremental compile kapt? some simple explanation for dummys like me? 🙂

[yan]

Kapt task does not compile everything, it just invokes javac in order to launch annotation processing. AP itself can’t be incremental as JSR269 does not provide any support for that.