if cm == coverage.CtrModeInvalid {
		base.Fatalf("bad setting %q for covermode in coveragecfg:",
			counterMode)
	}
	var cg coverage.CounterGranularity
	switch counterGran {
	case "perblock":
		cg = coverage.CtrGranularityPerBlock
	case "perfunc":
		cg = coverage.CtrGranularityPerFunc
	default:
		base.Fatalf("bad setting %q for covergranularity in coveragecfg:",
			counterGran)
	}

	cnames := names{
		MetaVar:     metavar,

			apkgfiles, false)
		t.Logf("outfiles: %+v\n", ofs)

		// Run the compiler on the files to make sure the result is
		// buildable.
		bargs := []string{"tool", "compile", "-p", "a", "-coveragecfg", outcfg}
		bargs = append(bargs, ofs...)
		cmd := testenv.Command(t, testenv.GoToolPath(t), bargs...)
		cmd.Dir = instdira
		run(cmd, t)
	}

	// Do some error testing to ensure that various bad options and

		defaultGcFlags = append(defaultGcFlags, "-goversion", ToolchainVersion)
	}
	if p.Internal.Cover.Cfg != "" {
		defaultGcFlags = append(defaultGcFlags, "-coveragecfg="+p.Internal.Cover.Cfg)
	}
	if pgoProfile != "" {
		defaultGcFlags = append(defaultGcFlags, "-pgoprofile="+pgoProfile)
	}
	if symabis != "" {
		defaultGcFlags = append(defaultGcFlags, "-symabis", symabis)
	}

}

func (b *Builder) writeCoverPkgInputs(a *Action, pconfigfile string, covoutputsfile string, outfiles []string) error {
	sh := b.Shell(a)
	p := a.Package
	p.Internal.Cover.Cfg = a.Objdir + "coveragecfg"
	pcfg := covcmd.CoverPkgConfig{
		PkgPath: p.ImportPath,
		PkgName: p.Name,
		// Note: coverage granularity is currently hard-wired to
		// 'perblock'; there isn't a way using "go build -cover" or "go