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| kotlinc -X
Usage: kotlinc-jvm <options> <source files>
where advanced options include:
-Xadd-compiler-builtins Add definitions of built-in declarations to the compilation classpath (useful with -no-stdlib)
-Xadd-modules=<module[,]> Root modules to resolve in addition to the initial modules,
or all modules on the module path if <module> is ALL-MODULE-PATH
-Xassertions={always-enable|always-disable|jvm|legacy}
Assert calls behaviour
-Xassertions=always-enable: enable, ignore jvm assertion settings;
-Xassertions=always-disable: disable, ignore jvm assertion settings;
-Xassertions=jvm: enable, depend on jvm assertion settings;
-Xassertions=legacy: calculate condition on each call, check depends on jvm assertion settings in the kotlin package;
default: legacy
-Xbuild-file=<path> Path to the .xml build file to compile
-Xcompile-java Reuse javac analysis and compile Java source files
-Xnormalize-constructor-calls={disable|enable}
Normalize constructor calls (disable: don't normalize; enable: normalize),
default is 'disable' in language version 1.2 and below,
'enable' since language version 1.3
-Xdump-declarations-to=<path> Path to JSON file to dump Java to Kotlin declaration mappings
-Xdisable-default-scripting-plugin
Do not enable scripting plugin by default
-Xdisable-standard-script Disable standard kotlin script support
-Xfriend-paths=<path> Paths to output directories for friend modules (whose internals should be visible)
-Xmultifile-parts-inherit Compile multifile classes as a hierarchy of parts and facade
-Xmodule-path=<path> Paths where to find Java 9+ modules
-Xjavac-arguments=<option[,]> Java compiler arguments
-Xjsr305={ignore/strict/warn}|under-migration:{ignore/strict/warn}|@<fq.name>:{ignore/strict/warn}
Specify behavior for JSR-305 nullability annotations:
-Xjsr305={ignore/strict/warn} globally (all non-@UnderMigration annotations)
-Xjsr305=under-migration:{ignore/strict/warn} all @UnderMigration annotations
-Xjsr305=@<fq.name>:{ignore/strict/warn} annotation with the given fully qualified class name
Modes:
* ignore
* strict (experimental; treat as other supported nullability annotations)
* warn (report a warning)
-Xjvm-default={disable|enable|compatibility}
Allow to use '@JvmDefault' annotation for JVM default method support.
-Xjvm-default=disable Prohibit usages of @JvmDefault
-Xjvm-default=enable Allow usages of @JvmDefault; only generate the default method
in the interface (annotating an existing method can break binary compatibility)
-Xjvm-default=compatibility Allow usages of @JvmDefault; generate a compatibility accessor
in the 'DefaultImpls' class in addition to the interface method
-Xload-builtins-from-dependencies
Load definitions of built-in declarations from module dependencies, instead of from the compiler
-Xno-call-assertions Don't generate not-null assertions for arguments of platform types
-Xno-exception-on-explicit-equals-for-boxed-null
Do not throw NPE on explicit 'equals' call for null receiver of platform boxed primitive type
-Xno-optimize Disable optimizations
-Xno-param-assertions Don't generate not-null assertions on parameters of methods accessible from Java
-Xno-receiver-assertions Don't generate not-null assertion for extension receiver arguments of platform types
-Xsanitize-parentheses Transform '(' and ')' in method names to some other character sequence.
This mode can BREAK BINARY COMPATIBILITY and is only supposed to be used as a workaround
of an issue in the ASM bytecode framework. See KT-29475 for more details
-Xscript-resolver-environment=<key=value[,]>
Script resolver environment in key-value pairs (the value could be quoted and escaped)
-Xsingle-module Combine modules for source files and binary dependencies into a single module
-Xskip-runtime-version-check Allow Kotlin runtime libraries of incompatible versions in the classpath
-Xstrict-java-nullability-assertions
Generate nullability assertions for non-null Java expressions
-Xgenerate-strict-metadata-version
Generate metadata with strict version semantics (see kdoc on Metadata.extraInt)
-Xsupport-compatqual-checker-framework-annotations=enable|disable
Specify behavior for Checker Framework compatqual annotations (NullableDecl/NonNullDecl).
Default value is 'enable'
-Xuse-ir Use the IR backend
-Xuse-javac Use javac for Java source and class files analysis
-Xuse-old-class-files-reading Use old class files reading implementation. This may slow down the build and cause problems with Groovy interop.
Should be used in case of problems with the new implementation
-Xuse-type-table Use type table in metadata serialization
-Xallow-kotlin-package Allow compiling code in package 'kotlin' and allow not requiring kotlin.stdlib in module-info
-Xallow-result-return-type Allow compiling code when `kotlin.Result` is used as a return type
-Xcommon-sources=<path> Sources of the common module that need to be compiled together with this module in the multi-platform mode.
Should be a subset of sources passed as free arguments
-Xcoroutines={enable|warn|error}
Enable coroutines or report warnings or errors on declarations and use sites of 'suspend' modifier
-Xdisable-phases Disable backend phases
-Xdump-perf=<path> Dump detailed performance statistics to the specified file
-Xeffect-system Enable experimental language feature: effect system
-Xexperimental=<fq.name> Enable and propagate usages of experimental API for marker annotation with the given fully qualified name
-Xintellij-plugin-root=<path> Path to the kotlin-compiler.jar or directory where IntelliJ configuration files can be found
-Xlegacy-smart-cast-after-try Allow var smart casts despite assignment in try block
-Xlist-phases List backend phases
-Xmetadata-version Change metadata version of the generated binary files
-Xmulti-platform Enable experimental language support for multi-platform projects
-Xnew-inference Enable new experimental generic type inference algorithm
-Xno-check-actual Do not check presence of 'actual' modifier in multi-platform projects
-Xno-inline Disable method inlining
-Xphases-to-dump Dump backend state both before and after these phases
-Xphases-to-dump-after Dump backend state after these phases
-Xphases-to-dump-before Dump backend state before these phases
-Xplugin=<path> Load plugins from the given classpath
-Xprofile-phases Profile backend phases
-Xproper-ieee754-comparisons Generate proper IEEE 754 comparisons in all cases if values are statically known to be of primitive numeric types
-Xread-deserialized-contracts Enable reading of contracts from metadata
-Xreport-output-files Report source to output files mapping
-Xreport-perf Report detailed performance statistics
-Xskip-metadata-version-check Load classes with bad metadata version anyway (incl. pre-release classes)
-Xuse-experimental=<fq.name> Enable, but don't propagate usages of experimental API for marker annotation with the given fully qualified name
-Xverbose-phases Be verbose while performing these backend phases
Advanced options are non-standard and may be changed or removed without any notice.
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