oapi-codegen uses the standard Go means to determine what the version of the binary is.

However, this doesn't work when there's no Version Control System (VCS), for instance when building from a source bundle.

This example shows how to override the version at build-time.

By specifying -ldflags for the noVCSVersionOverride when running go build or go run:

go run -ldflags "-X main.noVCSVersionOverride=v123.456.789" ./cmd/oapi-codegen --config=config.yaml ../../api.yaml