From 0123bbee3df72e977fc8bc01d1f2910fba2a8e86 Mon Sep 17 00:00:00 2001
From: Ophestra <cat@gensokyo.uk>
Date: Sat, 21 Feb 2026 00:30:40 +0900
Subject: [PATCH] internal/rosa: bc artifact

Required by the kernel.

Signed-off-by: Ophestra <cat@gensokyo.uk>
---
 internal/rosa/all.go |  2 ++
 internal/rosa/gnu.go | 20 ++++++++++++++++++++
 2 files changed, 22 insertions(+)

diff --git a/internal/rosa/all.go b/internal/rosa/all.go
index 278e762..26d563b 100644
--- a/internal/rosa/all.go
+++ b/internal/rosa/all.go
@@ -15,6 +15,7 @@ const (
 	Attr
 	Autoconf
 	Automake
+	BC
 	Bash
 	Binutils
 	Bison
@@ -135,6 +136,7 @@ func ResolveName(name string) (p PArtifact, ok bool) {
 		"attr":              Attr,
 		"autoconf":          Autoconf,
 		"automake":          Automake,
+		"bc":                BC,
 		"bash":              Bash,
 		"binutils":          Binutils,
 		"bison":             Bison,
diff --git a/internal/rosa/gnu.go b/internal/rosa/gnu.go
index 276ae3c..9e0cc23 100644
--- a/internal/rosa/gnu.go
+++ b/internal/rosa/gnu.go
@@ -386,6 +386,26 @@ echo 'int main(){return 0;}' > tests/xargs/test-sigusr.c
 }
 func init() { artifactsF[Findutils] = Toolchain.newFindutils }
 
+func (t Toolchain) newBC() pkg.Artifact {
+	const (
+		version  = "1.08.2"
+		checksum = "8h6f3hjV80XiFs6v9HOPF2KEyg1kuOgn5eeFdVspV05ODBVQss-ey5glc8AmneLy"
+	)
+	return t.NewViaMake("bc", version, t.NewPatchedSource(
+		"bc", version, pkg.NewHTTPGetTar(
+			nil, "https://ftpmirror.gnu.org/gnu/bc/bc-"+version+".tar.gz",
+			mustDecode(checksum),
+			pkg.TarGzip,
+		), false,
+	), &MakeAttr{
+		Writable: true,
+	},
+		t.Load(Perl),
+		t.Load(Texinfo),
+	)
+}
+func init() { artifactsF[BC] = Toolchain.newBC }
+
 func (t Toolchain) newBinutils() pkg.Artifact {
 	const (
 		version  = "2.45"