add deprecation handler for removed/renamed minimizer styles

src/min_deprecated.cpp

@@ -0,0 +1,44 @@
+/* ----------------------------------------------------------------------
+   LAMMPS - Large-scale Atomic/Molecular Massively Parallel Simulator
+   https://www.lammps.org/, Sandia National Laboratories
+   LAMMPS development team: developers@lammps.org
+
+   Copyright (2003) Sandia Corporation.  Under the terms of Contract
+   DE-AC04-94AL85000 with Sandia Corporation, the U.S. Government retains
+   certain rights in this software.  This software is distributed under
+   the GNU General Public License.
+
+   See the README file in the top-level LAMMPS directory.
+------------------------------------------------------------------------- */
+
+/* ----------------------------------------------------------------------
+   Contributing author: Axel Kohlmeyer (Temple U)
+------------------------------------------------------------------------- */
+
+#include "min_deprecated.h"
+
+#include "comm.h"
+#include "error.h"
+#include "update.h"
+
+using namespace LAMMPS_NS;
+
+/* ---------------------------------------------------------------------- */
+
+MinDeprecated::MinDeprecated(LAMMPS *_lmp) : Min(_lmp)
+{
+  std::string my_style = update->minimize_style;
+
+  if (my_style == "DEPRECATED") {
+    if (lmp->comm->me == 0)
+      utils::logmesg(lmp, "\nMinimize style 'DEPRECATED' is a dummy style\n\n");
+    return;
+  }
+
+  if (my_style == "fire/old")
+    error->all(FLERR,
+               "Minimize style 'fire/old' has been removed from LAMMPS after "
+               "the 22 December 2022 version.\nERROR: Please use 'min_style fire'");
+
+  error->all(FLERR, "This minimize style is no longer available");
+}

src/min_deprecated.h

@@ -0,0 +1,39 @@
+/* -*- c++ -*- ----------------------------------------------------------
+   LAMMPS - Large-scale Atomic/Molecular Massively Parallel Simulator
+   https://www.lammps.org/, Sandia National Laboratories
+   LAMMPS development team: developers@lammps.org
+
+   Copyright (2003) Sandia Corporation.  Under the terms of Contract
+   DE-AC04-94AL85000 with Sandia Corporation, the U.S. Government retains
+   certain rights in this software.  This software is distributed under
+   the GNU General Public License.
+
+   See the README file in the top-level LAMMPS directory.
+------------------------------------------------------------------------- */
+
+#ifdef MINIMIZE_CLASS
+// clang-format off
+MinimizeStyle(DEPRECATED,MinDeprecated);
+MinimizeStyle(fire/old,MinDeprecated);
+// clang-format on
+#else
+
+#ifndef LMP_MIN_DEPRECATED_H
+#define LMP_MIN_DEPRECATED_H
+
+#include "min.h"
+
+namespace LAMMPS_NS {
+
+class MinDeprecated : public Min {
+ public:
+  MinDeprecated(class LAMMPS *);
+
+  void init() override {}
+  void setup_style() override {}
+  void reset_vectors() override {}
+  int iterate(int) override { return 0; }
+};
+}    // namespace LAMMPS_NS
+#endif
+#endif