add custom build arguments.

base/genimport/importer.go

@@ -38,6 +38,7 @@ type Importer struct {
 	mode       types.ImportMode
 	PluginOpen r.Value // = reflect.ValueOf(plugin.Open)
 	output     *Output
+	BuildArgs  []string
 }
 
 func DefaultImporter(o *Output) *Importer {
@@ -151,7 +152,7 @@ func (imp *Importer) doImportPackagesOrError(pathMap map[string]PackageName, ena
 		}
 		return refs, nil
 	}
-	soname := compilePlugin(o, dir, enableModule, o.Stdout, o.Stderr)
+	soname := compilePlugin(imp.BuildArgs, o, dir, enableModule, o.Stdout, o.Stderr)
 	ipkgs := imp.loadPluginSymbol(soname, "Packages")
 	pkgs := *ipkgs.(*map[string]imports.PackageUnderlying)
 

base/genimport/plugin.go

@@ -40,7 +40,7 @@ func chooseGoCmd() string {
 	return gocmd
 }
 
-func compilePlugin(o *Output, dir string, enableModule bool, stdout io.Writer, stderr io.Writer) string {
+func compilePlugin(buildArgs []string, o *Output, dir string, enableModule bool, stdout io.Writer, stderr io.Writer) string {
 	gosrcdir := paths.GoSrcDir
 	gosrclen := len(gosrcdir)
 	dirlen := len(dir)
@@ -49,7 +49,10 @@ func compilePlugin(o *Output, dir string, enableModule bool, stdout io.Writer, s
 	}
 	gocmd := chooseGoCmd()
 
-	cmd := exec.Command(gocmd, "build", "-buildmode=plugin")
+	args := make([]string, 0)
+	args = append(args, "build", "-buildmode=plugin")
+	args = append(args, buildArgs...)
+	cmd := exec.Command(gocmd, args...)
 	cmd.Dir = dir
 	cmd.Env = environForCompiler(enableModule)
 	cmd.Stdin = nil

fast/interpreter.go

@@ -144,6 +144,10 @@ func (ir *Interp) SetDebugger(debugger Debugger) {
 	ir.env.Run.Debugger = debugger
 }
 
+func (ir *Interp) SetBuildArgs(args []string) {
+	ir.Comp.Importer.BuildArgs = args
+}
+
 func (ir *Interp) Interrupt(os.Signal) {
 	ir.env.Run.interrupt()
 }