ci: changed to generate only files that exist in targets

Makefile

@@ -120,22 +120,22 @@ gen-device-avr:
 	@GO111MODULE=off $(GO) fmt ./src/device/avr
 
 build/gen-device-svd: ./tools/gen-device-svd/*.go
-	$(GO) build -o $@ ./tools/gen-device-svd/
+	CGO_CPPFLAGS="$(CGO_CPPFLAGS)" CGO_CXXFLAGS="$(CGO_CXXFLAGS)" CGO_LDFLAGS="$(CGO_LDFLAGS)" $(GO) build -o $@ ./tools/gen-device-svd/
 
 gen-device-esp: build/gen-device-svd
-	./build/gen-device-svd -source=https://github.com/posborne/cmsis-svd/tree/master/data/Espressif-Community -interrupts=software lib/cmsis-svd/data/Espressif-Community/ src/device/esp/
+	./build/gen-device-svd -source=https://github.com/posborne/cmsis-svd/tree/master/data/Espressif-Community -only-used -interrupts=software lib/cmsis-svd/data/Espressif-Community/ src/device/esp/
 	GO111MODULE=off $(GO) fmt ./src/device/esp
 
 gen-device-nrf: build/gen-device-svd
-	./build/gen-device-svd -source=https://github.com/NordicSemiconductor/nrfx/tree/master/mdk lib/nrfx/mdk/ src/device/nrf/
+	./build/gen-device-svd -source=https://github.com/NordicSemiconductor/nrfx/tree/master/mdk -only-used lib/nrfx/mdk/ src/device/nrf/
 	GO111MODULE=off $(GO) fmt ./src/device/nrf
 
 gen-device-nxp: build/gen-device-svd
-	./build/gen-device-svd -source=https://github.com/posborne/cmsis-svd/tree/master/data/NXP lib/cmsis-svd/data/NXP/ src/device/nxp/
+	./build/gen-device-svd -source=https://github.com/posborne/cmsis-svd/tree/master/data/NXP -only-used lib/cmsis-svd/data/NXP/ src/device/nxp/
 	GO111MODULE=off $(GO) fmt ./src/device/nxp
 
 gen-device-sam: build/gen-device-svd
-	./build/gen-device-svd -source=https://github.com/posborne/cmsis-svd/tree/master/data/Atmel lib/cmsis-svd/data/Atmel/ src/device/sam/
+	./build/gen-device-svd -source=https://github.com/posborne/cmsis-svd/tree/master/data/Atmel -only-used lib/cmsis-svd/data/Atmel/ src/device/sam/
 	GO111MODULE=off $(GO) fmt ./src/device/sam
 
 gen-device-sifive: build/gen-device-svd
@@ -143,11 +143,11 @@ gen-device-sifive: build/gen-device-svd
 	GO111MODULE=off $(GO) fmt ./src/device/sifive
 
 gen-device-kendryte: build/gen-device-svd
-	./build/gen-device-svd -source=https://github.com/posborne/cmsis-svd/tree/master/data/Kendryte-Community -interrupts=software lib/cmsis-svd/data/Kendryte-Community/ src/device/kendryte/
+	./build/gen-device-svd -source=https://github.com/posborne/cmsis-svd/tree/master/data/Kendryte-Community -only-used -interrupts=software lib/cmsis-svd/data/Kendryte-Community/ src/device/kendryte/
 	GO111MODULE=off $(GO) fmt ./src/device/kendryte
 
 gen-device-stm32: build/gen-device-svd
-	./build/gen-device-svd -source=https://github.com/tinygo-org/stm32-svd lib/stm32-svd/svd src/device/stm32/
+	./build/gen-device-svd -source=https://github.com/tinygo-org/stm32-svd -only-used lib/stm32-svd/svd src/device/stm32/
 	GO111MODULE=off $(GO) fmt ./src/device/stm32
 
 

tools/gen-device-svd/gen-device-svd.go

@@ -5,6 +5,8 @@ import (
 	"encoding/xml"
 	"flag"
 	"fmt"
+	"io/ioutil"
+	"log"
 	"os"
 	"path/filepath"
 	"regexp"
@@ -13,6 +15,10 @@ import (
 	"strings"
 	"text/template"
 	"unicode"
+
+	"github.com/tinygo-org/tinygo/builder"
+	"github.com/tinygo-org/tinygo/compileopts"
+	"github.com/tinygo-org/tinygo/goenv"
 )
 
 var validName = regexp.MustCompile("^[a-zA-Z0-9_]+$")
@@ -1164,7 +1170,7 @@ Default_Handler:
 	return w.Flush()
 }
 
-func generate(indir, outdir, sourceURL, interruptSystem string) error {
+func generate(indir, outdir, sourceURL, interruptSystem string, onlyUsed bool) error {
 	if _, err := os.Stat(indir); os.IsNotExist(err) {
 		fmt.Fprintln(os.Stderr, "cannot find input directory:", indir)
 		os.Exit(1)
@@ -1177,7 +1183,14 @@ func generate(indir, outdir, sourceURL, interruptSystem string) error {
 		os.Exit(1)
 	}
 	sort.Strings(infiles)
+
+	targets := tinygoTargets()
 	for _, infile := range infiles {
+		if onlyUsed {
+			if !targets[strings.ToLower(strings.TrimSuffix(filepath.Base(infile), filepath.Ext(infile)))] {
+				continue
+			}
+		}
 		fmt.Println(infile)
 		device, err := readSVD(infile, sourceURL)
 		if err != nil {
@@ -1202,9 +1215,59 @@ func generate(indir, outdir, sourceURL, interruptSystem string) error {
 	return nil
 }
 
+func tinygoTargets() map[string]bool {
+	names := []string{}
+
+	dir := filepath.Join(goenv.Get("TINYGOROOT"), "targets")
+	entries, err := ioutil.ReadDir(dir)
+	if err != nil {
+		fmt.Fprintln(os.Stderr, "could not list targets:", err)
+		os.Exit(1)
+		return nil
+	}
+	for _, entry := range entries {
+		if !entry.Mode().IsRegular() || !strings.HasSuffix(entry.Name(), ".json") {
+			// Only inspect JSON files.
+			continue
+		}
+		path := filepath.Join(dir, entry.Name())
+		spec, err := compileopts.LoadTarget(path)
+		if err != nil {
+			fmt.Fprintln(os.Stderr, "could not list target:", err)
+			os.Exit(1)
+			return nil
+		}
+		if spec.FlashMethod == "" && spec.FlashCommand == "" && spec.Emulator == nil {
+			// This doesn't look like a regular target file, but rather like
+			// a parent target (such as targets/cortex-m.json).
+			continue
+		}
+		name := entry.Name()
+		name = name[:len(name)-5]
+		names = append(names, name)
+	}
+
+	tags := map[string]bool{}
+	for _, tgt := range names {
+		options := &compileopts.Options{
+			Target: tgt,
+		}
+		config, err := builder.NewConfig(options)
+		if err != nil {
+			log.Fatal(err)
+		}
+		for _, tag := range config.BuildTags() {
+			tags[tag] = true
+		}
+	}
+
+	return tags
+}
+
 func main() {
 	sourceURL := flag.String("source", "<unknown>", "source SVD file")
 	interruptSystem := flag.String("interrupts", "hardware", "interrupt system in use (software, hardware)")
+	onlyUsed := flag.Bool("only-used", false, "generate only what is defined in target")
 	flag.Parse()
 	if flag.NArg() != 2 {
 		fmt.Fprintln(os.Stderr, "provide exactly two arguments: input directory (with .svd files) and output directory for generated files")
@@ -1213,7 +1276,7 @@ func main() {
 	}
 	indir := flag.Arg(0)
 	outdir := flag.Arg(1)
-	err := generate(indir, outdir, *sourceURL, *interruptSystem)
+	err := generate(indir, outdir, *sourceURL, *interruptSystem, *onlyUsed)
 	if err != nil {
 		fmt.Fprintln(os.Stderr, err)
 		os.Exit(1)