New to kotlin, wanna build kotlin from source and see how it works(eg: compiler or so), but I get problem when I try to build on my Mac OS, is there any tutorial in detail about build kotlin from source code?

kevinofneu: There is only a readme https://github.com/JetBrains/kotlin/blob/master/ReadMe.md#building but it should work most of time )

If you have more specific question than “I have a problem” we might be able to answer.

When I use

ant -f build.xml

, I got unresolved error,

[javac2] /Users/kevin/Workspace/github/kotlin/plugins/kapt3/src/org/jetbrains/kotlin/kapt3/util/javacListUtils.kt:42:60: error: unresolved reference: JavacList
   [javac2]     if (valuePairs == null || valuePairs.isEmpty()) return JavacList.nil()
   [javac2]                                                            ^
   [javac2] /Users/kevin/Workspace/github/kotlin/plugins/kapt3/src/org/jetbrains/kotlin/kapt3/util/javacListUtils.kt:45:18: error: unresolved reference: JavacList
   [javac2]     var result = JavacList.nil<T>()
   [javac2]                  ^
   [javac2] /Users/kevin/Workspace/github/kotlin/plugins/kapt3/src/org/jetbrains/kotlin/kapt3/util/javacListUtils.kt:57:33: error: unresolved reference: JavacList
   [javac2] internal operator fun <T : Any> JavacList<T>.plus(other: JavacList<T>): JavacList<T> {
   [javac2]                                 ^
   [javac2] /Users/kevin/Workspace/github/kotlin/plugins/kapt3/src/org/jetbrains/kotlin/kapt3/util/javacListUtils.kt:57:58: error: unresolved reference: JavacList
   [javac2] internal operator fun <T : Any> JavacList<T>.plus(other: JavacList<T>): JavacList<T> {
   [javac2]                                                          ^
   [javac2] /Users/kevin/Workspace/github/kotlin/plugins/kapt3/src/org/jetbrains/kotlin/kapt3/util/javacListUtils.kt:57:73: error: unresolved reference: JavacList
   [javac2] internal operator fun <T : Any> JavacList<T>.plus(other: JavacList<T>): JavacList<T> {
   [javac2]

did

ant -f update_dependencies.xml

completed successfully ?

update_dependencies succeed

Sometimes it could happen that dependency jars become broken during downloading. So maybe it worth to delete content of

ideaSDK

folder and try to update dependencies ons again.

OK，I will try later

Have you also run ant dist and do you have the three versions of Java installed? I would guess it might be dist related given that it’s failing to find something that should be within the project.

Are there any warnings about

tools.jar

in the beginnig of build process? Are you sure that

JAVA_HOME

points to JDK not JRE?

In my .zshrc:

export JAVA_HOME="/Library/Java/Home"
export JDK_16="/Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Home"
export JDK_18="/Library/Java/JavaVirtualMachines/jdk1.8.0_101.jdk/Contents/Home"
export JDK_17="/Library/Java/JavaVirtualMachines/jdk1.7.0_80.jdk/Contents/Home"
export PATH="$JAVA_HOME/bin:$JDK_16/bin:$JDK_17/bin:$JDK_18/bin:$PATH"
export ANT_OPTS="-Xmx1024m -XX:MaxPermSize=512m"

Is that ok?

hm… try to point all of this Java Paths to

/Library/Java/JavaVirtualMachines/jdk1.8.0_101.jdk/Contents/Home

I shall have a try, thanks

Glad it finally worked, do you know what made the difference? It might be valuable to have a walkthrough, the readme is a little bit dense sometimes

The Java environment on my computer is cracked, eventhough the environment variables are correctly setted, when it comes to build process, there are errors, may be I should checked it more carefaully. So it may be better if there are more detailed building process which can be used to check which parts are going wrong.