internal/rosa: libxml2 artifact

Required by wayland. Release tarball is xz only, unfortunately.

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

internal/rosa/libxml2.go

@@ -0,0 +1,34 @@
+package rosa
+
+import (
+	"strings"
+
+	"hakurei.app/internal/pkg"
+)
+
+func (t Toolchain) newLibxml2() pkg.Artifact {
+	const (
+		version  = "2.15.1"
+		checksum = "pYzAR3cNrEHezhEMirgiq7jbboLzwMj5GD7SQp0jhSIMdgoU4G9oU9Gxun3zzUIU"
+	)
+	return t.New("libxml2-"+version, []pkg.Artifact{
+		t.Load(Make),
+	}, nil, nil, `
+cd /usr/src/
+tar xf libxml2.tar.xz
+mv libxml2-`+version+` libxml2
+
+cd "$(mktemp -d)"
+/usr/src/libxml2/configure \
+	--prefix=/system \
+	--build="${ROSA_TRIPLE}"
+make "-j$(nproc)" check
+make DESTDIR=/work install
+`, pkg.Path(AbsUsrSrc.Append("libxml2.tar.xz"), false, pkg.NewHTTPGet(
+		nil, "https://download.gnome.org/sources/libxml2/"+
+			strings.Join(strings.Split(version, ".")[:2], ".")+
+			"/libxml2-"+version+".tar.xz",
+		mustDecode(checksum),
+	)))
+}
+func init() { artifactsF[Libxml2] = Toolchain.newLibxml2 }