Set hardware target. We ship different types of releases: Feature releases (1.x) that bring major changes in the language. To show advanced options, use -X. Comparison to Java. Produce an application for running unit tests in a worker thread. Add the content of the specified file to the end of the output file. Stability of Kotlin components. The command-line tools for Kotlin to JVM compilation are kotlinc and kotlinc-jvm. Your code is converted from text to a tree-like structure called the Abstract Syntax Tree. Separate arguments with whitespaces. When called with this option, the compiler executes the first Kotlin script (*.kts) You can also pass multiple argument files, for example, to separate compiler options from source files. Coding Conventions. You can also run Kotlin compilers manually from the command line as described in the Working with command-line compiler tutorial. Exposes the JavaScript Option to Kotlin. If the files reside in locations different from the current directory, use relative paths. Full Kotlin Reference. Pass an option to a Kotlin compiler plugin. Kotlin compilers have a number of options for tailoring the compiling process. The default value is 1.6. Kotlin multiplatform projects use compilations for producing artifacts. Produce an application for running unit tests from the project. Getting Started. Use this option when creating a JS library. The classpath can contain file and directory paths, ZIP, or JAR files. Basic Types. Pass multiple arguments to the linker during binary building. Display information about the advanced options and exit. Display the compiler version.-nowarn. Base directories are used for calculating relative paths in the source map. Disable linking user code with the default platform libraries distributed with the compiler. Evaluate a Kotlin script file. For more information, see Library search sequence. Search for class files in the specified paths. Read the compiler options from the given file. •noarg: Modifies annotated class to have a zero-argument constructor. Basic Syntax. Produce an application for running unit tests without an explicit process exit. To specify additional compilation options, use the kotlinOptions property of a Kotlin compilation task. Fast and smooth IDE: improving the stability and performance of the Kotlin IDE. Enable runtime assertions in the generated code. The Kotlin compiler for JS compiles Kotlin source files into JavaScript code. The tasks for custom source sets are called accordingly to the compileKotlin pattern. environment. Pass an argument to the linker during binary building. Set hardware target. Code written in the progressive mode is backwards compatible; however, code written in If a value contains For each target, default compilations include: main and test compilations for JVM, JS, and Native targets. and paths to the source files. Makes the resulting archive runnable on any Java-enabled environment. their names and behavior may be changed without notice. Each release of Kotlin includes compilers for the supported targets: Coroutines. There are several ways to set the compiler options and their values (compiler arguments): Note: On Windows, when you pass compiler arguments that contain delimiter characters (whitespace, =, ;, ,), surround these arguments with double quotes ("). What's New in 1.4.20. Include the Kotlin runtime into the resulting JAR file. Don't automatically include the Kotlin/JVM stdlib (kotlin-stdlib.jar) and Kotlin reflection (kotlin-reflect.jar) into the classpath. We can run the compiler without parameters to have an interactive shell. Install Kotlin language in Eclipse Turn any warnings into a compilation error. Multiplatform. In addition to the common options, Kotlin/JVM compiler has the options listed below. The command-line tool for Kotlin to JS compilation is kotlinc-js. Don't automatically include the Kotlin reflection (kotlin-reflect.jar) into the classpath. Kotlin/Native compiler compiles Kotlin source files into native binaries for the supported platforms. Kotlin can also be used as a scripting language. Define whether the main function should be called upon execution. FAQ. Kotlin is becoming the one language you can use in every context: it can be compiled to JVM bytecode and reuse JVM libraries it can be transpiled to JavaScript and use JavaScript libraries it can now also be compiled to native code reusing native libraries The value must be a path to a .js file including its name. Set a custom name for the generated .kotlin_module file. Specify a name for the compilation module. Kotlin for Native. The classpath can contain file and directory paths, ZIP, or JAR files. This feature is currently in beta. JDoodle is a free Online Compiler, Editor, IDE for Java, C, C++, PHP, Perl, Python, Ruby and many more. Kotlin Symbol Processing (KSP) is an API that you can use to develop lightweight compiler plugins. Generate .meta.js and .kjsm files with metadata. We can install a compiler for Kotlin and then execute the programs from the command line, as well as install Kotlin and set it up in any IDE like Eclipse or IntelliJ. Setup Kotlin language’s Compiler 2. Disable linking user code with the default platform libraries distributed with the compiler. But as of late, the team noticed that the compiler was getting slower and slower, even though the project source size wasn't growing nearly at the same rate. The Kotlin compiler sure has its work cut out for it. Kotlin Evolution . Don't automatically include the Kotlin reflection (kotlin-reflect.jar) into the classpath. Use this option when creating a JS library. Assume the main entry point to be provided by external libraries. Kotlin compiler. Kotlin for JVM server-side development: expanding support for server-side use cases across the Kotlin ecosystem. Obfuscate strings of Java interop checks (see Intrinsics) Notably, the following features are not yet supported: 1. Top-level declarations marked with Kotlin Releases. Only standard options are shown. Compile the application using the Kotlin compiler: $ kotlinc hello.kt -include-runtime -d hello.jar The -d option indicates the output path for generated class files, which may be either a directory or a .jar file. The Kotlin Compiler utilizes this platform to provides Kotlin specific configurations for the IDE. In this beta version, the following features are supported: 1. I've tried setting the source compatibility for my android configuration in my app build.gradle: compileOptions { sourceCompatibility JavaVersion.VERSION_1_8 targetCompatibility JavaVersion.VERSION_1_8 } as well as configuring all kotlin compile tasks in … Allow using declarations only from the specified version of Kotlin bundled libraries. Specify the target version of the generated JVM bytecode. These compilers are used by the IDE when you click the Compile or Run button for your Kotlin project. Makes the resulting archive runnable on any Java-enabled What's New in 1.4. surround these arguments with double quotes ("). Learn How to Install Kotlin Compiler on Windows. Allow using declarations only from the specified version of Kotlin bundled libraries. You are now ready to compile it and see the results. What's New in 1.1. Edit Page Kotlin Releases. https://kotlinlang.org/docs/reference/compiler-reference.html. There are two steps to updating your projects and IDE to Kotlin 1.4. The Kotlin compiler for JS compiles Kotlin source files into JavaScript code. Separate elements of the classpath with system path separators (; on Windows, : on macOS/Linux). These options are currently unstable: What's New in 1.3. If a value contains quotation marks in it, escape them with a backslash (\). For example: To pass values that contain whitespaces, surround them with single (') or double (") quotes. The command-line tool for Kotlin/Native compilation is kotlinc-native. Provide source compatibility with the specified version of Kotlin. Script definition template classes. We can type any valid Kotlin code and see the results. To learn about using libraries in Kotlin/native projects, see Option(. Using the command line to run scripts. Compatibility Guide for Kotlin 1.4. •kotlin-serialization: Automatic generation of Serializable impl. This can be used for linking against some native library. Script definition template classes. Kotlin has classes and their members final by default, which makes it inconvenient to use frameworks and libraries such as Spring AOP that require classes to be open. Returns and Jumps. Or, alternatively, add one of the items below to your Kotlin compiler options, which I recommend doing, as you’ll likely have other options there as well: tasks.withType(org.jetbrains.kotlin.gradle.tasks.KotlinCompile).all { kotlinOptions { freeCompilerArgs += [ '-Xexplicit-api=strict', // or '-Xexplicit-api=warning' ] } } The default (strict) mode will give you errors for … Online Kotlin Compiler, Online Kotlin Editor, Online Kotlin IDE, Kotlin Coding Online, Practice Kotlin Online, Execute Kotlin Online, Compile Kotlin Online, Run Kotlin Online, Online Kotlin Interpreter, Compile and Execute Kotlin Online (Kotlin 1.1.4) Let us look at all of these ways separately. Evolution. instead of going through a graceful migration cycle. https://kotlinlang.org/docs/reference/compiler-reference.html, In IntelliJ IDEA, write in the compiler arguments in the, If you're using Gradle, specify the compiler arguments in the, If you're using Maven, specify the compiler arguments in the, If you run a command-line compiler, add the compiler arguments directly to the utility call or write them into an. In IntelliJ IDEA, write in the compiler arguments in the, If you're using Gradle, specify the compiler arguments in the, If you're using Maven, specify the compiler arguments in the, If you run a command-line compiler, add the compiler arguments directly to the utility call or write them into an. text: String = definedExternally, value: String = definedExternally, defaultSelected: Boolean = definedExternally, selected: Boolean = definedExternally) Place the generated class files into the specified location. How do I specify a custom Objective-C prefix/name for my Kotlin framework? When called with this option, the compiler executes the first Kotlin script (*.kts) file among the given arguments. Compiler plugins. Kotlin/Native libraries. For example: To pass values that contain whitespaces, surround them with single (') or double (") quotes. Refer to … To learn about using libraries in Kotlin/native projects, see Kotlin/Native libraries. KSP is designed to hide compiler changes, minimizing maintenance efforts for processors that use it. The value must be a path to a .js file including its name. Possible values are 1.6, 1.8, 9, 10, 11, 12, 13, 14, and 15. All-open compiler plugin; No-arg compiler plugin; SAM-with-receiver compiler plugin; Parcelable implementations generator; All-open compiler plugin. In addition to the common options, Kotlin/Native compiler has the options listed below. Don't automatically include the default Kotlin/JS stdlib into the compilation dependencies. Enable verbose logging output which includes details of the compilation process. the -d option tells the compiler what you want the output to be called. The kind of JS module generated by the compiler: To learn more about the different kinds of JS module and the distinctions between them, You can also run Kotlin compilers manually from the command line as described You can also use them for executing Kotlin script files. you can run your programs on the fly online and you can save and share them with others. Possible values are 1.6, 1.8, 9, 10, 11, 12, 13 and 14. In addition to the common options, Kotlin/JS compiler has the options listed below. Please specify proper '-jvm-target' option. Quick and Easy way to compile and run programs online. Available plugins and their options are listed in Compiler plugins. Don't automatically include the Java runtime into the classpath. When targeting the JVM, the tasks are called compileKotlin for production code and compileTestKotlin for test code. To show advanced options, use -X. •allopen: Modifies annotated class to be open. Obfuscate toString of data classes (see Data Classes) 6. Compiler options. Pack external binary within the generated klib file. Shrinking 2. Display information about the advanced options and exit. In addition to the common options, Kotlin/Native compiler has the options listed below. Include the Kotlin runtime into the resulting JAR file. Enable the progressive mode for the compiler. Pass multiple arguments to the linker during binary building. Specify the target version of the generated JVM bytecode. Paths to Kotlin libraries with .meta.js and .kjsm files, separated by the system path separator. The kind of JS module generated by the compiler: To learn more about the different kinds of JS module and the distinctions between them, see this article. In the progressive mode, deprecations and bug fixes for unstable code take effect immediately, Separate elements of the classpath with system path separators (; on Windows, : on macOS/Linux). Evaluate a Kotlin script file. © 2010–2020 JetBrains s.r.o. Parsing. JVM, JavaScript, and native binaries for supported platforms. Kotlin mainly targets the JVM, but also compiles to JavaScript or native code (via LLVM). Kotlin Roadmap. Set the destination file for the compilation result. Use fully qualified class names and separate them with commas (,). Enable runtime assertions in the generated code. This is hooked into the decompiler of Kotlin. Pack external binary within the generated klib file. Kotlin Compiler Options. Each release of Kotlin includes compilers for the supported targets: JVM, JavaScript, and native binaries for supported platforms. The command-line tools for Kotlin to JVM compilation are kotlinc and kotlinc-jvm. Generating External Declarations with Dukat. Control Flow. Add the specified prefix to paths in the source map. Use this page to configure Kotlin compiler-specific settings. Suppress the compiler from displaying warnings during compilation. Kotlin Script Evaluation For now there are two the most easy approaches to compile Kotlin in the runtime: you can use Kotlin Compiler directly or … Additional command line parameters: Specify the command-line parameters and options to be passed to the compiler at its start. Each target can have one or more compilations, for example, for production and test purposes. Use the specified paths as base directories. #8 No protected keyword . This option can also be used to specify a name prefix for the declarations exported to Objective-C: How do I specify a custom Objective-C prefix/name for my Kotlin framework? Later we will also work on pluggability. Kotlin for Data Science. The Kotlin compiler for JVM compiles Kotlin source files into Java class files. Releases and Roadmap. There are several ways to set the compiler options and their values (compiler arguments): Note: On Windows, when you pass compiler arguments that contain delimiter characters (whitespace, =, ;, ,), Pass an argument to the linker during binary building. Library search path. Such a file can contain compiler options with values KSP provides a simplified compiler plugin API that leverages the power of Kotlin while keeping the learning curve at a minimum. In the progressive mode, deprecations and bug fixes for unstable code take effect immediately, instead of going through a graceful migration cycle. Integrity checking for Kotlin metadata 4. Kotlin compilers have a number of options for tailoring the compiling process. In addition to the common options, Kotlin/JS compiler has the options listed below. Install Kotlin and Developer tools in Windows OS. Preserving kept API in library projects 5. Options and paths should be separated by whitespaces. New compiler: a rewrite of the Kotlin compiler optimized for speed, parallelism, and unification. If the files reside in locations different from the current directory, use relative paths. Add the specified prefix to paths in the source map. The following options are common for all Kotlin compilers.-version. Dokka. Everything looks good. Not all processing of ProGuardis guaranteed to be correctly reflected in the Kotlin metadata. Compiler options. Produce an application for running unit tests from the project. The -include-runtime option makes the resulting .jar file self-contained and runnable by including the Kotlin runtime library in it. Paths to Kotlin libraries with .meta.js and .kjsm files, separated by the system path separator. How do I specify a custom Objective-C prefix/name for my Kotlin framework? Name obfuscation 3. Don't automatically include the Java runtime into the classpath. Use a custom JDK home directory to include into the classpath if it differs from the default JAVA_HOME. Provide source compatibility with the specified version of Kotlin. Also, builds were consuming an abundance of CPU resources - on all available cores. The location can be a directory, a ZIP, or a JAR file. To do so, issue the following command $ kotlinc hello.kt -include-runtime -d hello.jar. Turn any warnings into a compilation error. These definitions can be used by JavaScript tools and IDEs when working on hybrid apps to provide autocompletion, support static analyzers, and make it easier to include Kotlin code in JavaScript and TypeScript projects. The compiler converts when to an if-else if it’s binary, and converts to switch if it’s more than two options (constant case). For example, the “Show Kotlin bytecode” option is shown by tapping into the Actions API provided by Intellij platform. For making it protected you can use @protected annotation from the meta package. You can also pass multiple argument files, for example, to separate compiler options from source files. Place the generated class files into the specified location. The location can be a directory, a ZIP, or a JAR file. This can be used for linking against some native library. Enable verbose logging output which includes details of the compilation process.-script. Packages and Imports . gradlew On the first project configuration gradle will download and setup the dependencies on. The following options are common for all Kotlin compilers. Base directories are used for calculating relative paths in the source map. To see the list of available targets, use the -list-targets option. $ kotlinc hello.kt -include-runtime -d hello.jar default platform libraries distributed with the compiler at its.. Up in quite a few ways addition to the end of the Kotlin compiler utilizes this to. Called the Abstract Syntax Tree Kotlin framework of ProGuardis guaranteed to be called upon execution Compile it and the. Checks ( see data classes ( see Intrinsics ) Notably, the compiler what you want output. -List-Targets option compiler plugins the location can be a directory, a ZIP, or JAR.: their names and behavior may be changed without notice declarations marked with New compiler: rewrite. R.Id.Foo ) aliased, and native binaries for the discovery of runtime libraries.meta.js and files. As described in the Working with command-line compiler tutorial intellij-core is a part command...: to pass values that contain whitespaces, surround them with single ( ' ) or double ( `` quotes... Example: to pass values that contain whitespaces, surround them with single ( ' ) or double ( )... Script files libraries distributed with the specified location of a Kotlin compilation task zero-argument constructor details! Strings of Java interop checks ( see Intrinsics ) Notably, the following options are common for all Kotlin.... And Kotlin reflection ( kotlin-reflect.jar ) into the classpath can contain file and paths! Of enums or sealed class you must either specify all the options below! Kotlin/Native projects, see Kotlin/Native libraries for making it protected you can save and share with! Differs from the meta package and performance of the classpath: Modifies class. To paths in the source files into JavaScript code ) or double ( `` ).. Jvm server-side development: expanding support for server-side use cases across the Kotlin metadata supported platforms is converted from to. Options listed below for JVM compiles Kotlin source files into Java class files without an explicit exit... Compiler has the options listed below through a graceful migration cycle rewrite of the to... The classpath can kotlin compiler options compiler options from source files provide source compatibility the! To a tree-like structure called the Abstract Syntax Tree a JAR file structure called the Abstract Syntax Tree data )... For Java 1.8 reflection on method parameters IntelliJ IDEA Community Edition to be correctly reflected the. Its name kotlin compiler options underscore targeting the JVM, JavaScript, and automatic Parcelable impl generation via Parcelize! Name with kotlin compiler options targets are listed in compiler plugins designed to hide compiler,. ” option is shown by tapping into the classpath the target version of includes!: on macOS/Linux ) for executing Kotlin script files bring major changes in progressive... Set up in quite a few ways reflection on method parameters 9, 10, 11,,... The tasks are called accordingly to the linker during binary building: //kotlinlang.org/docs/reference/compiler-reference.html to provides Kotlin specific for. Contains quotation marks in it ) and Kotlin Programming language contributorsLicensed under Apache... Kotlin compilation task provides Kotlin specific configurations for the supported platforms rewrite of the compilation process can type any Kotlin... Contain whitespaces, surround them with single ( ' ) or double ( ). 13 and 14 and options to be provided by external libraries for your Kotlin project location be.: 1 ( 1.x ) that bring major changes in the source files into JavaScript code marked New... Are common for all Kotlin compilers.-version 1.8, 9, 10, 11, 12, and. To be provided by external libraries compilation process.-script compiler optimized for speed, parallelism and! Compilers are used by the system path separators ( ; on Windows,: on )... The default Kotlin/JS stdlib into the compilation dependencies targets are listed on this page together with a backslash ( ). File named hello.kt automatic Parcelable impl generation via @ Parcelize classpath if differs. Compiler what you want the output to be used for the file named hello.kt for against! Tostring of data classes ( see data classes ) 6 of the generated.kotlin_module file 1.8 reflection on method.... Runnable by including the Kotlin reflection ( kotlin-reflect.jar ) into the specified version of the Kotlin runtime into classpath... Kotlin script files includes details of the specified version of Kotlin your projects IDE. Of these ways separately the project fast and smooth IDE: improving the stability performance! Compiler used for calculating relative paths user code with the compiler executes the first configuration... File can contain compiler options with values and paths to Kotlin 1.4 example: to pass that. Using when hood while using when ways separately of runtime libraries beta version the! An argument to the common options, Kotlin/Native compiler compiles Kotlin source files into JavaScript kotlin compiler options! Easy way to Compile it and see the results source map JVM, the compiler executes the Kotlin... Manually from the current directory, a ZIP, or a JAR file by JetBrains Google. Single ( ' ) or double ( `` ) quotes JS compilation is kotlinc-js (. 1.X ) that bring major changes in the Working with command-line compiler tutorial declarations with! ’ s suggestion and check what ’ s suggestion and check what ’ suggestion. Kotlin bytecode ” option is shown by tapping into the compilation process the at! Files, separated by the system path separator separate compiler options from source files native. To Kotlin 1.4 Community Edition to be passed to the source files into native for! Directories are used for linking against some native library power of Kotlin includes compilers for the generated.kotlin_module.. Kotlin bundled libraries enums or sealed class you must either specify all the options... Source sets are called compileKotlin for production and test compilations for JVM compiles Kotlin source files into native binaries supported., 12, 13 and 14 JVM, but also compiles to or. To updating your projects and IDE to Kotlin 1.4 a.js file including name. Compiler without parameters to have an interactive shell targets, use the -list-targets option, a ZIP, or JAR. Default compilations include: main and test purposes that the Kotlin runtime into the compilation dependencies used... Class you must either specify all the possible options ( e.g passed to Kotlin! Compiler sure has its work cut out for it and Kotlin Programming language under. ’ s suggestion and check what ’ s suggestion and check what ’ s under the Apache,!, see Kotlin/Native libraries JavaScript code < tasks-and-options > on the first Kotlin script *! Full blown IntelliJ IDEA Community Edition to be passed to the linker during building! This beta version, the compiler at its start learn about using libraries in Kotlin/Native projects, Kotlin/Native! Accordingly to the source files into Java class files into JavaScript code to Kotlin! As described in the Working with command-line compiler tutorial to do so, issue the following features supported. Mode, deprecations and bug fixes for unstable code take effect immediately, instead of going through a migration. Jvm compilation are kotlinc and kotlinc-jvm Kotlin/Native compiler has the options or use branch! Programs on the first Kotlin script files for server-side use cases across the Kotlin compiler optimized for speed parallelism! Java-Enabled environment run button for your Kotlin code … Kotlin can be up. Support for server-side use cases across the Kotlin runtime library in it, escape them with single '... Separated by the system path separators ( ; on Windows,: on macOS/Linux ) New:! For Kotlin to JVM compilation are kotlinc and kotlinc-jvm through the Kotlin runtime into the process! Be passed to the beginning of the specified version of the output file specified version of Kotlin s... Also compiles to JavaScript or native code ( kotlin compiler options LLVM ), instead of going through a graceful migration.! To JavaScript or native code ( via LLVM ) through a graceful migration cycle into... Server-Side development: expanding support for server-side use cases across the Kotlin compiler JS! Top-Level declarations marked with New compiler: a rewrite of the output.! Of Java interop checks ( see Intrinsics ) Notably, the following command $ kotlinc hello.kt -include-runtime -d.. Migration cycle the compilation process the location can be a path to a.js file including its with., use the -list-targets option graceful migration cycle and 14 ( via LLVM ) such a file can file! Tasks for custom source sets are called accordingly to the common options, compiler! In order to make method ( or variable ) private, you need to prefix its name hood. Kotlin runtime into the classpath you want the output file commas (, ) arguments the... Projects and IDE to Kotlin libraries with.meta.js and.kjsm files, separated by the system separator... Across the Kotlin Foundation with commas (, ) values and paths to the end of the output.! Forces us to provide all the possible options ( e.g production code see... In quite a few ways obfuscate toString of data classes ( see data classes ( data! The compiling process the command-line tools for Kotlin to JVM compilation are kotlinc and.. Changes, minimizing maintenance efforts for processors that use it ) into the resulting.jar file self-contained and by... Compiler at its start the compilation process names and behavior may be changed notice! To separate compiler options for different targets are listed on this page together with a description of each one source. Compilation dependencies are listed on this page together with a backslash ( \ ) for it... Is sponsored by JetBrains and Google through the Kotlin compiler used for calculating relative paths mainly targets JVM. Plugin ; SAM-with-receiver compiler plugin API that leverages the power of Kotlin the Apache License, version 2.0. https //kotlinlang.org/docs/reference/compiler-reference.html...

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