diff --git a/cmd/internal/base/pass.go b/cmd/internal/base/pass.go
new file mode 100644
index 00000000..c04be72f
--- /dev/null
+++ b/cmd/internal/base/pass.go
@@ -0,0 +1,82 @@
+package base
+
+import (
+	"flag"
+	"fmt"
+	"strings"
+)
+
+type stringValue struct {
+	p    *PassArgs
+	name string
+}
+
+func (p *stringValue) String() string {
+	return ""
+}
+
+func (p *stringValue) Set(v string) error {
+	p.p.Args = append(p.p.Args, fmt.Sprintf("-%v=%v", p.name, v))
+	return nil
+}
+
+type boolValue struct {
+	p    *PassArgs
+	name string
+}
+
+func (p *boolValue) String() string {
+	return ""
+}
+
+func (p *boolValue) Set(v string) error {
+	p.p.Args = append(p.p.Args, fmt.Sprintf("-%v=%v", p.name, v))
+	return nil
+}
+
+func (p *boolValue) IsBoolFlag() bool {
+	return true
+}
+
+type PassArgs struct {
+	Args []string
+	Flag *flag.FlagSet
+}
+
+func (p *PassArgs) Tags() string {
+	for _, v := range p.Args {
+		if strings.HasPrefix(v, "-tags=") {
+			return v[6:]
+		}
+	}
+	return ""
+}
+
+func (p *PassArgs) Var(names ...string) {
+	for _, name := range names {
+		p.Flag.Var(&stringValue{p: p, name: name}, name, "")
+	}
+}
+
+func (p *PassArgs) Bool(names ...string) {
+	for _, name := range names {
+		p.Flag.Var(&boolValue{p: p, name: name}, name, "")
+	}
+}
+
+func NewPassArgs(flag *flag.FlagSet) *PassArgs {
+	p := &PassArgs{Flag: flag}
+	return p
+}
+
+func PassBuildFlags(cmd *Command) *PassArgs {
+	p := NewPassArgs(&cmd.Flag)
+	p.Bool("n", "x")
+	p.Bool("a")
+	p.Bool("linkshared", "race", "msan", "asan",
+		"trimpath", "work")
+	p.Var("p", "asmflags", "compiler", "buildmode",
+		"gcflags", "gccgoflags", "installsuffix",
+		"ldflags", "pkgdir", "toolexec", "buildvcs")
+	return p
+}
diff --git a/cmd/internal/build/build.go b/cmd/internal/build/build.go
index 7b9890bd..d88f1666 100644
--- a/cmd/internal/build/build.go
+++ b/cmd/internal/build/build.go
@@ -35,6 +35,7 @@ var Cmd = &base.Command{
 
 func init() {
 	Cmd.Run = runCmd
+	base.PassBuildFlags(Cmd)
 	flags.AddBuildFlags(&Cmd.Flag)
 	flags.AddOutputFlags(&Cmd.Flag)
 }
diff --git a/cmd/internal/run/run.go b/cmd/internal/run/run.go
index 654044e5..3df0c199 100644
--- a/cmd/internal/run/run.go
+++ b/cmd/internal/run/run.go
@@ -47,6 +47,7 @@ var CmpTestCmd = &base.Command{
 func init() {
 	Cmd.Run = runCmd
 	CmpTestCmd.Run = runCmpTest
+	base.PassBuildFlags(Cmd)
 	flags.AddBuildFlags(&Cmd.Flag)
 	flags.AddBuildFlags(&CmpTestCmd.Flag)
 	flags.AddCmpTestFlags(&CmpTestCmd.Flag)