internal/rosa/make: configurable configure and install

This makes the helper useful for non-autotools build systems.

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

internal/rosa/libucontext.go

@@ -7,34 +7,24 @@ func (t Toolchain) newLibucontext() pkg.Artifact {
 		version  = "1.5"
 		checksum = "Ggk7FMmDNBdCx1Z9PcNWWW6LSpjGYssn2vU0GK5BLXJYw7ZxZbA2m_eSgT9TFnIG"
 	)
-	return t.New("libucontext", 0, []pkg.Artifact{
-		t.Load(Make),
-	}, nil, []string{
-		"ARCH=" + linuxArch(),
-	}, `
-cd /usr/src/libucontext
-make check
-make DESTDIR=/work install
-`, pkg.Path(AbsUsrSrc.Append("libucontext"), true,
-		t.NewPatchedSource("libucontext", version, pkg.NewHTTPGetTar(
+	return t.NewViaMake("libucontext", version, t.NewPatchedSource(
+		"libucontext", version, pkg.NewHTTPGetTar(
 			nil, "https://github.com/kaniini/libucontext/archive/refs/tags/"+
 				"libucontext-"+version+".tar.gz",
 			mustDecode(checksum),
 			pkg.TarGzip,
-		), true, [2]string{"rosa-prefix", `diff --git a/Makefile b/Makefile
-index c80e574..4a8c1d3 100644
---- a/Makefile
-+++ b/Makefile
-@@ -17,7 +17,7 @@ ifeq ($(ARCH),$(filter $(ARCH),arm64))
-        override ARCH = aarch64
- endif
+		), false,
+	), &MakeAttr{
+		Writable:      true,
+		OmitDefaults:  true,
+		SkipConfigure: true,
+		InPlace:       true,
 
--prefix = /usr
-+prefix = /system
- libdir = ${prefix}/lib
- shared_libdir = ${libdir}
- static_libdir = ${libdir}
-`}),
-	))
+		ScriptEarly: "cd /usr/src/libucontext",
+		Make: []string{
+			"ARCH=" + linuxArch(),
+		},
+		ScriptInstall: "make prefix=/system DESTDIR=/work install",
+	})
 }
 func init() { artifactsF[Libucontext] = Toolchain.newLibucontext }