Usage: kotlinc-jvm where advanced options include: -Xno-call-assertions Don't generate not-null assertion after each invocation of method returning not-null -Xno-param-assertions Don't generate not-null assertions on parameters of methods accessible from Java -Xno-optimize Disable optimizations -Xreport-perf Report detailed performance statistics -Xmultifile-parts-inherit Compile multifile classes as a hierarchy of parts and facade -Xallow-kotlin-package Allow compiling code in package 'kotlin' -Xskip-metadata-version-check Try loading binary incompatible classes, may cause crashes -Xdump-declarations-to Path to JSON file to dump Java to Kotlin declaration mappings -Xno-inline Disable method inlining -Xrepeat Repeat compilation (for performance analysis) -Xplugin Load plugins from the given classpath Advanced options are non-standard and may be changed or removed without any notice. OK