duplicate big-go version tags functionality [ fix #4391 ]

builder/config.go

@@ -33,10 +33,15 @@ func NewConfig(options *compileopts.Options) (*compileopts.Config, error) {
 		return nil, fmt.Errorf("requires go version 1.19 through 1.22, got go%d.%d", major, minor)
 	}
 
+	// tinygo major / minor version
+	tgMajor, tgMinor := goenv.GetVersion()
+
 	return &compileopts.Config{
 		Options:        options,
 		Target:         spec,
 		GoMinorVersion: minor,
 		TestConfig:     options.TestConfig,
+		VersionMajor:   tgMajor,
+		VersionMinor:   tgMinor,
 	}, nil
 }

compileopts/config.go

@@ -20,6 +20,10 @@ type Config struct {
 	Target         *TargetSpec
 	GoMinorVersion int
 	TestConfig     TestConfig
+
+	// tinygo versions
+	VersionMajor int
+	VersionMinor int
 }
 
 // Triple returns the LLVM target triple, like armv6m-unknown-unknown-eabi.
@@ -81,9 +85,19 @@ func (c *Config) BuildTags() []string {
 		"math_big_pure_go",                           // to get math/big to work
 		"gc." + c.GC(), "scheduler." + c.Scheduler(), // used inside the runtime package
 		"serial." + c.Serial()}...) // used inside the machine package
+
+	// Go Version tags
 	for i := 1; i <= c.GoMinorVersion; i++ {
 		tags = append(tags, fmt.Sprintf("go1.%d", i))
 	}
+
+	// tinygo Version tags
+	for i := 0; i <= c.VersionMajor; i++ {
+		for j := 1; j <= c.VersionMinor; j++ {
+			tags = append(tags, fmt.Sprintf("tinygo%d.%d", i, j))
+		}
+	}
+
 	tags = append(tags, c.Options.Tags...)
 	return tags
 }

goenv/version.go

@@ -27,6 +27,13 @@ func Version() string {
 	return v
 }
 
+// Return version as major / minor
+func GetVersion() (major, minor int) {
+	// version must be
+	fmt.Sscanf(version, "%d.%d", &major, &minor)
+	return
+}
+
 // GetGorootVersion returns the major and minor version for a given GOROOT path.
 // If the goroot cannot be determined, (0, 0) is returned.
 func GetGorootVersion() (major, minor int, err error) {

main.go

@@ -1428,7 +1428,7 @@ func main() {
 	// development it can be useful to not emit debug information at all.
 	skipDwarf := flag.Bool("internal-nodwarf", false, "internal flag, use -no-debug instead")
 
-	var flagJSON, flagDeps, flagTest bool
+	var flagJSON, flagDeps, flagTest, flagFull bool
 	if command == "help" || command == "list" || command == "info" || command == "build" {
 		flag.BoolVar(&flagJSON, "json", false, "print data in JSON format")
 	}
@@ -1440,6 +1440,9 @@ func main() {
 	if command == "help" || command == "build" || command == "test" {
 		flag.StringVar(&outpath, "o", "", "output filename")
 	}
+	if command == "info" {
+		flag.BoolVar(&flagFull, "full", false, "output all tinygo version build-tags")
+	}
 
 	var witPackage, witWorld string
 	if command == "help" || command == "build" || command == "test" || command == "run" {
@@ -1720,6 +1723,12 @@ func main() {
 			os.Exit(1)
 		}
 		config.GoMinorVersion = 0 // this avoids creating the list of Go1.x build tags.
+		if !flagFull {
+			// avoid creating tinygoX.X build tags
+			config.VersionMinor = 0
+			config.VersionMajor = 0
+		}
+
 		if err != nil {
 			fmt.Fprintln(os.Stderr, err)
 			os.Exit(1)