decl.Recv = nil
				}
			}
			decls = append(decls, decl)
		}
		f.Decls = decls
		if debug {
			format.Node(os.Stderr, fset, f) // debugging
		}
		cgoFiles = append(cgoFiles, f)
	}
	if cgoFiles == nil {
		return nil, nil, nil // nothing to do (can't happen?)
	}

	// Type-check the synthetic files.
	tc := &types.Config{
		FakeImportC: true,

		// files are in an overlay): the code expects the package directory
		// to exist and runs some tools in that directory.
		// TODO(#39958): Process the overlays when the
		// gofiles, cgofiles, cfiles, sfiles, and cxxfiles variables are
		// created in (*Builder).build. Doing that requires rewriting the
		// code that uses those values to expect absolute paths.
		f, _ = fsys.OverlayPath(f)

		args = append(args, f)

	p.Target = "" // must build - not up to date
	if p.Internal.CmdlineFiles {
		//set executable name if go file is given as cmd-argument
		var src string
		if len(p.GoFiles) > 0 {
			src = p.GoFiles[0]
		} else if len(p.CgoFiles) > 0 {
			src = p.CgoFiles[0]
		} else {
			// this case could only happen if the provided source uses cgo
			// while cgo is disabled.
			hint := ""
			if !cfg.BuildContext.CgoEnabled {

	if dir != "" {
		if err := sh.Mkdir(dir); err != nil {
			return err
		}
	}

	gofiles := str.StringList(p.GoFiles)
	cgofiles := str.StringList(p.CgoFiles)
	cfiles := str.StringList(p.CFiles)
	sfiles := str.StringList(p.SFiles)
	cxxfiles := str.StringList(p.CXXFiles)
	var objects, cgoObjects, pcCFLAGS, pcLDFLAGS []string

	if p.UsesCgo() || p.UsesSwig() {

        DefaultGODEBUG string  // default GODEBUG setting, for main packages

        // Source files
        GoFiles           []string   // .go source files (excluding CgoFiles, TestGoFiles, XTestGoFiles)
        CgoFiles          []string   // .go source files that import "C"
        CompiledGoFiles   []string   // .go files presented to compiler (when using -compiled)

	p.Goroot = pp.Goroot
	p.Standard = p.Goroot && p.ImportPath != "" && search.IsStandardImportPath(p.ImportPath)
	p.GoFiles = pp.GoFiles
	p.CgoFiles = pp.CgoFiles
	p.IgnoredGoFiles = pp.IgnoredGoFiles
	p.InvalidGoFiles = pp.InvalidGoFiles
	p.IgnoredOtherFiles = pp.IgnoredOtherFiles
	p.CFiles = pp.CFiles
	p.CXXFiles = pp.CXXFiles
	p.MFiles = pp.MFiles
	p.HFiles = pp.HFiles
	p.FFiles = pp.FFiles
	p.SFiles = pp.SFiles

	BinaryOnly    bool     // cannot be rebuilt from source (has //go:binary-only-package comment)

	// Source files
	GoFiles           []string // .go source files (excluding CgoFiles, TestGoFiles, XTestGoFiles)
	CgoFiles          []string // .go source files that import "C"
	IgnoredGoFiles    []string // .go source files ignored for this build (including ignored _test.go files)

	}
	sort.Strings(p.AllTags)

	if len(p.CgoFiles) > 0 {
		p.SFiles = append(p.SFiles, Sfiles...)
		sort.Strings(p.SFiles)
	} else {
		p.IgnoredOtherFiles = append(p.IgnoredOtherFiles, Sfiles...)
		sort.Strings(p.IgnoredOtherFiles)
	}

	if badGoError != nil {
		return p, badGoError
	}
	if len(p.GoFiles)+len(p.CgoFiles)+len(p.TestGoFiles)+len(p.XTestGoFiles) == 0 {

		// Record which files are not in package main.
		// The others are.
		keep := func(list []string) {
			for _, f := range list {
				packageFile[f] = true
			}
		}
		keep(p.GoFiles)
		keep(p.CgoFiles)
		keep(p.TestGoFiles)
		keep(p.XTestGoFiles)
	}

	_, elem := filepath.Split(p.Dir)
	var allRemove []string

	// Remove dir-named executable only if this is package main.

		ptest = new(Package)
		*ptest = *p
		ptest.Error = ptestErr
		ptest.Incomplete = incomplete
		ptest.ForTest = p.ImportPath
		ptest.GoFiles = nil
		ptest.GoFiles = append(ptest.GoFiles, p.GoFiles...)
		ptest.GoFiles = append(ptest.GoFiles, p.TestGoFiles...)
		ptest.Target = ""
		// Note: The preparation of the vet config requires that common
		// indexes in ptest.Imports and ptest.Internal.RawImports