Git version (#1257)

Add git version to the printed output when --print-parameters is on

Co-authored-by: Bruno Blais <blais.bruno@gmail.com>
Former-commit-id: 5885806

CHANGELOG.md

@@ -3,6 +3,12 @@
 All notable changes to the Lethe project will be documented in this file.
 The format is based on [Keep a Changelog](http://keepachangelog.com/).
 
+## [Master] - 2024-08-23
+
+### Added
+
+- MINOR Added the capacity to print the parameter from the parameter file that were changed compared to the default parameters as well as the lethe and deal.II commit hash. This is achieved by adding the runtime argument --print-parameters to the command line arguments. [#1255](https://github.com/chaos-polymtl/lethe/pull/1255) and [#1257](https://github.com/chaos-polymtl/lethe/pull/1257)
+
 ## [Master] - 2024-08-09
 
 ### Changed

CMakeLists.txt

@@ -20,6 +20,13 @@ find_package(deal.II 9.5.0 QUIET REQUIRED
   HINTS "${deal.II_DIR}" "${DEAL_II_DIR}" "$ENV{DEAL_II_DIR}")
 deal_ii_initialize_cached_variables()
 
+deal_ii_query_git_information(LETHE)
+
+CONFIGURE_FILE(
+  ${CMAKE_CURRENT_SOURCE_DIR}/include/core/revision.h.in
+  ${CMAKE_CURRENT_BINARY_DIR}/include/core/revision.h
+)
+
 project(lethe VERSION 0.1 LANGUAGES CXX)
 
 # Check for deal.II features after the PROJECT call — but still as close
@@ -131,6 +138,8 @@ endif()
 
 
 add_subdirectory(source)
+target_include_directories(lethe-solvers PUBLIC ${CMAKE_CURRENT_BINARY_DIR}/include)
+
 add_subdirectory(applications)
 
 if(CMAKE_PROJECT_NAME STREQUAL PROJECT_NAME)

applications/lethe-fluid-matrix-free/fluid_dynamics_matrix_free.cc

@@ -15,6 +15,21 @@
 
 #include "solvers/fluid_dynamics_matrix_free.h"
 
+#include <core/revision.h>
+
+#include <deal.II/base/revision.h>
+
+std::string
+concatenate_strings(const int argc, char **argv)
+{
+  std::string result = std::string(argv[0]);
+
+  for (int i = 1; i < argc; ++i)
+    result = result + " " + std::string(argv[i]);
+
+  return result;
+}
+
 int
 main(int argc, char *argv[])
 {
@@ -42,6 +57,19 @@ main(int argc, char *argv[])
                                   MPI_COMM_WORLD) == 0) &&
                                  print_parameters);
 
+      if (print_parameters)
+        {
+          pcout << "Running: " << concatenate_strings(argc, argv) << std::endl;
+          pcout << "  - deal.II (branch: " << DEAL_II_GIT_BRANCH
+                << "; revision: " << DEAL_II_GIT_REVISION
+                << "; short: " << DEAL_II_GIT_SHORTREV << ")" << std::endl;
+          pcout << "  - Lethe (branch: " << LETHE_GIT_BRANCH
+                << "; revision: " << LETHE_GIT_REVISION
+                << "; short: " << LETHE_GIT_SHORTREV << ")" << std::endl;
+          pcout << std::endl;
+          pcout << std::endl;
+        }
+
       if (dim == 2)
         {
           ParameterHandler        prm;

include/core/revision.h.in

@@ -0,0 +1,31 @@
+/* ---------------------------------------------------------------------
+ *
+ * Copyright (C) 2024 - by the Lethe authors
+ *
+ * This file is part of the Lethe library
+ *
+ * The Lethe library is free software; you can use it, redistribute
+ * it, and/or modify it under the terms of the GNU Lesser General
+ * Public License as published by the Free Software Foundation; either
+ * version 3.1 of the License, or (at your option) any later version.
+ * The full text of the license can be found in the file LICENSE at
+ * the top level of the Lethe distribution.
+ *
+ ---------------------------------------------------------------------*/
+
+#pragma once
+
+/**
+ * Name of the local git branch of the source directory.
+ */
+#define LETHE_GIT_BRANCH "@LETHE_GIT_BRANCH@"
+
+/**
+ * Full sha1 revision of the current git HEAD.
+ */
+#define LETHE_GIT_REVISION "@LETHE_GIT_REVISION@"
+
+/**
+ * Short sha1 revision of the current git HEAD.
+ */
+#define LETHE_GIT_SHORTREV "@LETHE_GIT_SHORTREV@"