From 1fc9c3200ffeae6ca287af4adb040f13608f09ee Mon Sep 17 00:00:00 2001
From: Ophestra <cat@gensokyo.uk>
Date: Sat, 7 Feb 2026 22:33:12 +0900
Subject: [PATCH] internal/rosa: libucontext artifact

Required by GCC on musl.

Signed-off-by: Ophestra <cat@gensokyo.uk>
---
 internal/rosa/all.go         |  2 ++
 internal/rosa/libucontext.go | 40 ++++++++++++++++++++++++++++++++++++
 2 files changed, 42 insertions(+)
 create mode 100644 internal/rosa/libucontext.go

diff --git a/internal/rosa/all.go b/internal/rosa/all.go
index 5aea5ee..560d040 100644
--- a/internal/rosa/all.go
+++ b/internal/rosa/all.go
@@ -41,6 +41,7 @@ const (
 	Libgd
 	Libtool
 	Libseccomp
+	Libucontext
 	Libxml2
 	M4
 	MPC
@@ -130,6 +131,7 @@ func ResolveName(name string) (p PArtifact, ok bool) {
 		"libexpat":          Libexpat,
 		"libpsl":            Libpsl,
 		"libseccomp":        Libseccomp,
+		"libucontext":       Libucontext,
 		"libxml2":           Libxml2,
 		"libffi":            Libffi,
 		"libgd":             Libgd,
diff --git a/internal/rosa/libucontext.go b/internal/rosa/libucontext.go
new file mode 100644
index 0000000..0dccbf6
--- /dev/null
+++ b/internal/rosa/libucontext.go
@@ -0,0 +1,40 @@
+package rosa
+
+import "hakurei.app/internal/pkg"
+
+func (t Toolchain) newLibucontext() pkg.Artifact {
+	const (
+		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(
+			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
+
+-prefix = /usr
++prefix = /system
+ libdir = ${prefix}/lib
+ shared_libdir = ${libdir}
+ static_libdir = ${libdir}
+`}),
+	))
+}
+func init() { artifactsF[Libucontext] = Toolchain.newLibucontext }