:0: warning: legacy driver is now deprecated; consider avoiding specifying '-disallow-use-new-driver' OVERVIEW: Swift compiler USAGE: swiftc DEBUG/DEVELOPMENT OPTIONS: -compiler-assertions Enable internal self-checks while compiling MODES: -dump-ast Parse and type-check input file(s) and dump AST(s) -dump-parse Parse input file(s) and dump AST(s) -dump-pcm Dump debugging information about a precompiled Clang module -dump-scope-maps Parse and type-check input file(s) and dump the scope map(s) -dump-type-info Output YAML dump of fixed-size types from all imported modules -emit-assembly Emit assembly file(s) (-S) -emit-bc Emit LLVM BC file(s) -emit-executable Emit a linked executable -emit-imported-modules Emit a list of the imported modules -emit-irgen Emit LLVM IR file(s) before LLVM optimizations -emit-ir Emit LLVM IR file(s) after LLVM optimizations -emit-library Emit a linked library -emit-lowered-sil Emit lowered SIL file(s) -emit-object Emit object file(s) (-c) -emit-pcm Emit a precompiled Clang module from a module map -emit-polyglot-ast Parse the Objective-C input file and emit polyglot AST as JSON -emit-sibgen Emit serialized AST + raw SIL file(s) -emit-sib Emit serialized AST + canonical SIL file(s) -emit-silgen Emit raw SIL file(s) -emit-sil Emit canonical SIL file(s) -emit-supported-arguments Emit a JSON file including all supported compiler arguments -index-file Produce index data for a source file -parse Parse input file(s) -print-ast-decl Parse and type-check input file(s) and pretty print declarations from AST(s) -print-ast Parse and type-check input file(s) and pretty print AST(s) -resolve-imports Parse and resolve imports in input file(s) -scan-dependencies Scan dependencies of the given Swift sources -typecheck Parse and type-check input file(s) OPTIONS: -access-notes-path Specify YAML file to override attributes on Swift declarations in this module -active-platform-availability-only Only emit availability metadata for platforms that are active according to the target -allow-availability-platforms Restrict availability metadata to the given platforms, e.g. 'macOS,Swift' -allow-non-resilient-access Ensures all contents are generated besides exportable decls in the binary module, so non-resilient access can be allowed -allowable-client Module names that are allowed to import this module -api-diff-data-dir Load platform and version specific API migration data files from . Ignored if -api-diff-data-file is specified. -api-diff-data-file API migration data is from -application-extension-library Restrict code to those available for App Extension Libraries -application-extension Restrict code to those available for App Extensions -assert-config Specify the assert_configuration replacement. Possible values are Debug, Release, Unchecked, DisableReplacement. -avoid-emit-module-source-info don't emit Swift source info file -block-availability-platforms Remove the given platforms from symbol graph availability metadata, e.g. 'macOS,Swift' -build-id Specify the build ID argument passed to the linker -cache-compile-job Enable compiler caching -cache-disable-replay Skip loading the compilation result from cache -cas-path Path to CAS -cas-plugin-option = Option pass to CAS Plugin -cas-plugin-path Path to CAS Plugin -clang-build-session-file Use the last modification time of as the underlying Clang build session timestamp -clang-scanner-module-cache-path Specifies the Clang dependency scanner module cache path -clang-target-variant Separately set the target we should use for internal Clang instance for the 'zippered' code for macCatalyst -clang-target Separately set the target we should use for internal Clang instance -color-diagnostics Print diagnostics in color -compare-to-baseline-path Compare the built module to the baseline at and diagnose breaking changes using the API digester -const-gather-protocols-list Specify a list of protocols for extraction of conformances 'const values' -continue-building-after-errors Continue building, even after errors are encountered -coverage-prefix-map Remap source paths in coverage info -cs-profile-generate= Generate instrumented code to collect context sensitive execution counts into /default.profraw (overridden by LLVM_PROFILE_FILE env var) -cs-profile-generate Generate instrumented code to collect context sensitive execution counts into default.profraw (overridden by LLVM_PROFILE_FILE env var) -cxx-interoperability-mode= Enables C++ interoperability; pass 'default' to enable or 'off' to disable -debug-info-for-profiling Emit extra debug info (DWARF discriminators) to make sampling-based profiling more accurate -debug-info-format= Specify the debug info format type to either 'dwarf' or 'codeview' -debug-info-store-invocation Emit the compiler invocation in the debug info. -debug-module-path Path or cache key to this module's binary swiftmodule artifact (required by debug info) -debug-module-self-key Embeded the key of current job in debug info generation (required by debug info) -debug-prefix-map Remap source paths in debug info -default-isolation MainActor|nonisolated Specify the default actor isolation: MainActor or nonisolated. Defaults to nonisolated. -define-availability Define an availability macro in the format 'macroName : iOS 13.0, macOS 10.15' -dependency-scan-serialize-diagnostics-path Emit a serialized diagnostics file for the dependency scanning task to -diagnostic-style