Here are a few title options, capturing the question-answer format and the article\'s essence: Option 1 (Focus on \'go build\' limitations): * How to Execute Custom Build Steps Beyond `go

Custom Build Steps with Go

While go build is typically sufficient for compiling Go programs, there may arise situations where additional actions or commands need to be executed alongside the build process.

Limitations of Go Tools

The go tool suite does not provide direct support for running arbitrary commands during the build. The pkg-config directive is a specific case for linking C libraries, not a general-purpose solution.

Workarounds

External Makefile:

One option is to use an external Makefile to orchestrate the additional build steps, which can then be explicitly called by the go build command using the following syntax:

<code class="go">go build -ldflags="-X main.version=$(shell cat VERSION)"</code>

In the Makefile, the additional steps can be defined as targets and prerequisites of the build target.

Separate Command:

Alternatively, you can manually execute the additional commands as separate steps before or after calling go build. This approach requires more manual intervention but provides greater flexibility.

Best Practices for Library Packages

Despite these workarounds, library packages should strive to be compilable with go get for ease of dependency resolution. Complex build requirements should be reserved for standalone applications.

Future Enhancements

The Go 1.4 release introduced the generate command, which allows developers to run pre-processing commands on source files. However, this is still a separate step that must be explicitly invoked and does not integrate with the general go build process.

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