diff --git a/pkgs/os-specific/bsd/freebsd/pkgs/ctfmerge.nix b/pkgs/os-specific/bsd/freebsd/pkgs/ctfmerge.nix
new file mode 100644
index 000000000000..2803df747350
--- /dev/null
+++ b/pkgs/os-specific/bsd/freebsd/pkgs/ctfmerge.nix
@@ -0,0 +1,35 @@
+{
+  lib,
+  mkDerivation,
+  compatIfNeeded,
+  libelf,
+  zlib,
+  libspl,
+}:
+
+mkDerivation {
+  path = "cddl/usr.bin/ctfmerge";
+  extraPaths = [
+    "cddl/compat/opensolaris"
+    "cddl/contrib/opensolaris"
+    "sys/cddl/compat/opensolaris"
+    "sys/cddl/contrib/opensolaris"
+    "sys/contrib/openzfs"
+  ];
+  OPENSOLARIS_USR_DISTDIR = "$(SRCTOP)/cddl/contrib/opensolaris";
+  OPENSOLARIS_SYS_DISTDIR = "$(SRCTOP)/sys/cddl/contrib/opensolaris";
+
+  makeFlags = [
+    "STRIP=-s"
+    "MK_WERROR=no"
+    "MK_TESTS=no"
+  ];
+
+  buildInputs = compatIfNeeded ++ [
+    zlib
+    libspl
+    libelf
+  ];
+
+  meta.license = lib.licenses.cddl;
+}