New to kotlin, wanna build kotlin from source and see how it works(eg: compiler or so), but I get pr...

# getting-started

[Holdge]

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?

[nicolay.mitropolsky]

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

[dalexander]

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

[Holdge]

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]

[nicolay.mitropolsky]

did ant -f update_dependencies.xml completed successfully ?

[Holdge]

update_dependencies succeed

[nicolay.mitropolsky]

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.

[Holdge]

OK，I will try later

[Holdge]

thx

[Holdge]

unfortunately，still with error， detail screenshot：

http://7xr586.com1.z0.glb.clouddn.com/images/qsf6v.jpg▾

[dalexander]

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.

[nicolay.mitropolsky]

Are there any warnings about tools.jar in the beginnig of build process? Are you sure that JAVA_HOME points to JDK not JRE?

[Holdge]

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?

[Holdge]

There is no warnings about tools.jar in the beginnig of build process

[nicolay.mitropolsky]

hm… try to point all of this Java Paths to /Library/Java/JavaVirtualMachines/jdk1.8.0_101.jdk/Contents/Home

[nicolay.mitropolsky]

because all unresolved references I see in you sreenshot are parts of tools.jar of JDK

[Holdge]

I shall have a try, thanks

[Holdge]

@nicolay.mitropolsky @dalexander thank u guys, finally succeed!

[Holdge]

May be I should post a blog about this procedure.

[dalexander]

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

[Holdge]

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.