Build tag
A build tag is a Go source-file constraint that determines whether a file is included in a particular build configuration.
Learn Go with Pocket-Sized Projects
A build tag is a source-file constraint that controls whether the file is included for a particular build configuration.
- How it is used
- Selects source files for particular board, operating-system, or architecture builds.
- How deep it goes
- Defines file placement and inclusion, then shows command-line selection, Boolean constraints, and target-supplied tags.
- Examples
- Uses an Arduino Nano 33 pin-mapping file, a TinyGo build command, and a target specification.
- What you can do after
- Operate/configure it by selecting board-specific files with `-tags` or a TinyGo target.
Read how Learn Go with Pocket-Sized Projects explains build tag →
100 Go Mistakes and How to Avoid Them
A build tag is a Go source-selection constraint that controls whether a file is included in a build or test invocation.
- How it is used
- Uses file-selection constraints to classify tests and conditionally include application sources.
- How deep it goes
- Explains placement, tag matching, negation, and command effects, but stops short of a full constraint-expression treatment.
- Examples
- Demonstrates cgo, integration, !integration, and !race constraints alongside go test commands and skipped-test output.
- What you can do after
- Operate/configure Go builds and tests by selecting files with tags and recognizing when untagged tests remain included.
Read how 100 Go Mistakes and How to Avoid Them explains build tag →
Go in Practice, Second Edition
A Go build tag is a source-file constraint that determines whether the file is included for a particular build environment.
- How it is used
- Selects platform-specific source files when building applications for different operating systems and architectures.
- How deep it goes
- Explains tag placement, exclusion values, GOOS and GOARCH linkage, and filename conventions.
- Examples
- Demonstrates !windows and !linux,!darwin tags, foo_windows.go and foo_386.go filenames, and a Windows 386 build command.
- What you can do after
- Operate/configure Go builds that include appropriate files for selected operating systems and hardware architectures.
Read how Go in Practice, Second Edition explains build tag →
Related concepts
- race-condition detectionconfigures · Race-condition detection is dynamic analysis of concurrent program execution that identifies conflicting unsynchronized accesses to shared data.
- integration testconfigures · An integration test evaluates whether multiple software components, or a component and an external dependency, interact and behave correctly together.
- code compilationconfigures · Code compilation is the translation of source code or another formal representation into an executable, intermediate, or lower-level representation.
- compilerconfigures · A compiler is software that translates source code into executable code or another representation, while analyzing it according to the source language’s rules.
- go testconfigures · go test is the Go command that builds and runs tests for specified packages and can also execute benchmarks and report coverage.
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