# copy
../simple/ap
ap

# mkdir
output/ap
output/stubs
output/classes
output/javaClasses
output/sources

# kotlinc
-language-version 1.9
-cp %KOTLIN_STDLIB%
-d output/ap
ap/Processor.kt

# kapt
-language-version 1.9
-Kapt-stubs=output/stubs
-Kapt-classes=output/classes
-Kapt-sources=output/sources
-Kapt-classpath=output/ap
-Kapt-processors=apt.SampleApt
-d output/classes
-cp output/ap:%KOTLIN_STDLIB%
RootClass.kt
Usage.kt

# after
Return code: 1

warning: [kapt] test.Usage: Can't reference type 'RootClass' from default package in Java stub.
error: output/stubs/test/Usage.java:9: error: cannot find symbol
    public abstract RootClass test();
                    ^
  symbol:   class RootClass
  location: interface Usage