diff --git a/packages/liblinear/liblinear.2.47/opam b/packages/liblinear/liblinear.2.47/opam
new file mode 100644
index 00000000000..274620e8d50
--- /dev/null
+++ b/packages/liblinear/liblinear.2.47/opam
@@ -0,0 +1,35 @@
+opam-version: "2.0"
+authors: "https://www.csie.ntu.edu.tw/~cjlin/liblinear/contributors.html"
+homepage: "https://www.csie.ntu.edu.tw/~cjlin/liblinear"
+#maintainer: "https://www.csie.ntu.edu.tw/~cjlin/index.html"
+maintainer: "unixjunkie@sdf.org"
+bug-reports: "https://github.com/ocaml/opam-repository/issues"
+license: "BSD-3-Clause"
+build: [
+  ["sh" "-c" "make -C liblinear-247"]
+  ["install" "liblinear-247/train"   "%{bin}%/liblinear-train"]
+  ["install" "liblinear-247/predict" "%{bin}%/liblinear-predict"]
+]
+depends: [
+  "conf-gcc"
+  "conf-g++"
+]
+available: os != "win32"
+synopsis: "User-space installer for liblinear"
+description: """
+Attempt a user-space installation of liblinear.
+If successful, liblinear-train and liblinear-predict will be installed
+into opam's bin directory.
+Note: liblinear is a C++ software which is required by some OCaml
+software in opam-repository.
+Having an automatic user-space installer in opam-repos. will make those
+software easier to install (e.g. even if you don't have root access
+to install the liblinear system package).
+"""
+dev-repo: "git://https://github.com/cjlin1/liblinear.git"
+url {
+  src: "https://github.com/cjlin1/liblinear/archive/refs/tags/v247.tar.gz"
+  checksum: [
+    "sha256=a62c46f20a01a4626260462c905721f5471da4550d38c3b68ffacf0aa64067b4"
+  ]
+}