add first step of bootstrap.go automation

related to #70

bootstrap.go

@@ -0,0 +1,124 @@
+// +build ignore
+
+package main
+
+import (
+	"context"
+	"flag"
+	"fmt"
+	"log"
+	"os"
+	"os/exec"
+	"strconv"
+)
+
+type bootstrapctx struct {
+	cross    string
+	hermetic bool
+}
+
+func (b *bootstrapctx) build(ctx context.Context, pkgs ...string) error {
+	for _, pkg := range pkgs {
+		log.Printf("building package %s", pkg)
+		build := exec.CommandContext(ctx,
+			"distri",
+			"build",
+			"-cross="+b.cross,
+			"-hermetic="+strconv.FormatBool(b.hermetic),
+			"-pkg="+pkg)
+		build.Stdin = os.Stdin
+		build.Stdout = os.Stdout
+		build.Stderr = os.Stderr
+		if err := build.Run(); err != nil {
+			return fmt.Errorf("%v: %v", build.Args, err)
+		}
+	}
+	return nil
+}
+
+func logic(ctx context.Context) error {
+	var b bootstrapctx
+	// TODO: de-duplicate the flag help texts with build.go
+	// TODO: insert all supported architectures into the flag help text
+	flag.StringVar(&b.cross, "cross", "", "If non-empty, cross-build for the specified architecture (e.g. i686)")
+	flag.BoolVar(&b.hermetic, "hermetic", true, "build hermetically (if false, host dependencies are used)")
+	flag.Parse()
+	var (
+		glibcSet = []string{"glibc"}
+		gccSet   = []string{"gmp", "mpfr", "mpc", "gcc"}
+		makeSet  = []string{"make"}
+		bashSet  = []string{"bash"}
+		restSet  = []string{
+			"attr",
+			"autoconf",
+			"bc",
+			"binutils",
+			"bison",
+			"coreutils",
+			"cryptsetup",
+			"diffutils",
+			"ed",
+			"elfutils",
+			"file",
+			"findutils",
+			"flex",
+			"gawk",
+			"gettext",
+			"glib",
+			"gperf",
+			"grep",
+			"gzip",
+			"help2man",
+			"json-c",
+			"kmod",
+			"libaio",
+			"libcap",
+			"libffi",
+			"libgcrypt",
+			"libgpg-error",
+			"rsync",
+			"linux",
+			"lvm2",
+			"m4",
+			"meson",
+			"musl",
+			"ncurses",
+			"ninja",
+			"openssl",
+			"pam",
+			"patchelf",
+			"pcre",
+			"perl",
+			"pkg-config",
+			"popt",
+			"python3",
+			"sed",
+			"strace",
+			"systemd",
+			"tar",
+			"texinfo",
+			"util-linux",
+			"which",
+			"zlib",
+		}
+	)
+	for _, pkgset := range [][]string{
+		glibcSet,
+		gccSet,
+		makeSet,
+		bashSet,
+		restSet,
+	} {
+		if err := b.build(ctx, pkgset...); err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
+func main() {
+	// TODO: cancel-correct context
+	if err := logic(context.Background()); err != nil {
+		log.Fatal(err)
+	}
+}