internal/rosa: musl-obstack artifact

Yet another nonstandard glibc extension used by elfutils.

Signed-off-by: Ophestra <cat@gensokyo.uk>

internal/rosa/musl-obstack.go

@@ -0,0 +1,33 @@
+package rosa
+
+import "hakurei.app/internal/pkg"
+
+func (t Toolchain) newMuslObstack() pkg.Artifact {
+	const (
+		version  = "1.2.3"
+		checksum = "tVRY_KjIlkkMszcaRlkKdBVQHIXTT_T_TiMxbwErlILXrOBosocg8KklppZhNdCG"
+	)
+	return t.NewViaMake("musl-obstack", version, pkg.NewHTTPGetTar(
+		nil, "https://github.com/void-linux/musl-obstack/archive/refs/tags/"+
+			"v"+version+".tar.gz",
+		mustDecode(checksum),
+		pkg.TarGzip,
+	), &MakeAttr{
+		Writable: true,
+		Env: []string{
+			"CC=cc -fPIC",
+		},
+		ScriptEarly: `
+cd /usr/src/musl-obstack
+./bootstrap.sh
+`,
+	},
+		t.Load(M4),
+		t.Load(Perl),
+		t.Load(Autoconf),
+		t.Load(Automake),
+		t.Load(Libtool),
+		t.Load(PkgConfig),
+	)
+}
+func init() { artifactsF[MuslObstack] = Toolchain.newMuslObstack }