===== go build =====

==== What is it? ====
`go build` compiles Go source code into an executable binary.

==== What is it used for? ====
  * Produce a runnable file for deployment.
  * Build for specific platforms, including cross-compiling.

==== Examples ====
  * Build with the default output name:
    <code bash>
    go build .
    </code>

  * Set the output binary name:
    <code bash>
    go build -o app .
    </code>

  * Cross-compile for Linux (from macOS/Windows):
    <code bash>
    GOOS=linux GOARCH=amd64 go build -o app-linux .
    </code>

==== Hard words (English) ====
  * **binary** /ˈbaɪnəri/: file thực thi
  * **cross-compile** /ˌkrɔːs kəmˈpaɪl/: biên dịch chéo
  * **architecture (arch)** /ˈɑːrkɪtektʃər/: kiến trúc CPU
  * **executable** /ɪɡˈzekjətəbəl/: có thể chạy được