set go optimization flag

proto_package.go

@@ -698,13 +698,19 @@ func (p *ProtoPackage) findPkgFiles() error {
 		return err
 	}
 
-	if p.DbPackage == nil {
-		return fmt.Errorf("unable to find Pkgfiles without dbpakg present")
+	if p.DbPackage == nil && p.Srcinfo == nil {
+		return fmt.Errorf("unable to find pkgfiles without dbpkg or srcinfo present")
 	}
 
 	var realPkgs []string
-	for _, realPkg := range p.DbPackage.Packages {
-		realPkgs = append(realPkgs, realPkg)
+	if p.DbPackage != nil {
+		for _, realPkg := range p.DbPackage.Packages {
+			realPkgs = append(realPkgs, realPkg)
+		}
+	} else {
+		for _, realPkg := range p.Srcinfo.Packages {
+			realPkgs = append(realPkgs, realPkg.Pkgname)
+		}
 	}
 
 	var fPkg []string

utils.go

@@ -726,6 +726,8 @@ func setupMakepkg(march string) error {
 		makepkgStr = strings.ReplaceAll(makepkgStr, " check ", " !check ")
 	}
 	makepkgStr = strings.ReplaceAll(makepkgStr, " color ", " !color ")
+	// set Go optimization flag
+	makepkgStr = strings.ReplaceAll(makepkgStr, "LDFLAGS=", "GOAMD64="+march[len(march)-2:]+\nLDFLAGS=")
 	// Add align-functions=32, see https://github.com/InBetweenNames/gentooLTO/issues/164 for more
 	makepkgStr = strings.ReplaceAll(makepkgStr, "-O2", "-O3 -falign-functions=32 -mpclmul -fdevirtualize-at-ltrans")
 	makepkgStr = strings.ReplaceAll(makepkgStr, "#MAKEFLAGS=\"-j2\"", "MAKEFLAGS=\"-j"+strconv.Itoa(conf.Build.Makej)+"\"")