swiftc 命令

常用示例

说明

swiftc is the Swift compiler that translates Swift source code into executable binaries, libraries, object files, and modules. It is the command-line interface for building Swift programs outside of Xcode. The compiler driver coordinates multiple compilation phases: parsing, type checking, optimization, and code generation. For single-file programs, swiftc produces an executable directly. Multiple source files are compiled and linked together. swiftc is a symbolic link to the swift executable, which determines its behavior based on how it is invoked. The Swift Package Manager typically handles compilation for complex projects.

参数

-o _file_

Specify output file name

-c

Compile without linking (produce object file)

-g

Generate debugging symbols

-O

Compile with optimizations

-Osize

Compile with optimizations, prioritizing smaller binary size

-Ounchecked

Compile with optimizations, removing runtime safety checks

-Onone

Compile without optimizations (default for debug)

-whole-module-optimization

Optimize across the entire module at once

-target _triple_

Generate code for the given target triple (e.g., x86_64-apple-macosx10.15)

-v, --verbose

Show verbose output including executed commands

-emit-executable

Generate an executable (default when linking)

-emit-library

Generate a dynamic library

-emit-module

Generate a Swift module

-D _flag_

Define a conditional compilation flag

-I _path_

Add import search path

-L _path_

Add library search path

-l _library_

Link with specified library

-h, --help

Display help information