From: Matthias Maier <tamiko@kyomu.43-1.org>
Date: Tue, 28 Jan 2014 19:01:29 +0000 (+0000)
Subject: CMake: Refactor detailed and summary log creation
X-Git-Tag: v8.2.0-rc1~939
X-Git-Url: https://gitweb.dealii.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=632bfd6b4e17ffcbc3420df3d8a911896eefd5ce;p=dealii.git

CMake: Refactor detailed and summary log creation

git-svn-id: https://svn.dealii.org/trunk@32338 0785d39b-7218-0410-832d-ea1e28bc413d
---

diff --git a/deal.II/CMakeLists.txt b/deal.II/CMakeLists.txt
index c48544e743..ad2a8cacd4 100644
--- a/deal.II/CMakeLists.txt
+++ b/deal.II/CMakeLists.txt
@@ -123,6 +123,7 @@ ENDFOREACH()
 #
 INCLUDE(setup_custom_targets)
 INCLUDE(setup_finalize)
+INCLUDE(setup_write_config)
 
 
 ########################################################################
diff --git a/deal.II/cmake/configure/configure_1_mpi.cmake b/deal.II/cmake/configure/configure_1_mpi.cmake
index 647ea4a81c..1927e8ecbd 100644
--- a/deal.II/cmake/configure/configure_1_mpi.cmake
+++ b/deal.II/cmake/configure/configure_1_mpi.cmake
@@ -52,6 +52,7 @@ MACRO(FEATURE_MPI_FIND_EXTERNAL var)
       "not be autodetected"
       )
   ENDIF()
+
   FIND_PACKAGE(MPI)
 
   IF(NOT MPI_CXX_FOUND AND DEAL_II_WITH_MPI)
@@ -136,6 +137,14 @@ MACRO(FEATURE_MPI_FIND_EXTERNAL var)
     SET(${var} TRUE)
   ENDIF()
 
+  #
+  # Populate correct variables:
+  #
+  SET(MPI_LIBRARIES ${MPI_CXX_LIBRARIES})
+  SET(MPI_INCLUDE_DIRS ${MPI_CXX_INCLUDE_PATH})
+  SET(MPI_CXX_FLAGS ${MPI_CXX_COMPILE_FLAGS})
+  SET(MPI_LINKER_FLAGS "${MPI_CXX_LINK_FLAGS}")
+
   # Hide some variables:
   MARK_AS_ADVANCED(MPI_EXTRA_LIBRARY MPI_LIBRARY MPI_MPI_H)
 
@@ -146,9 +155,9 @@ MACRO(FEATURE_MPI_CONFIGURE_EXTERNAL)
   #
   # The user has to know the location of the mpi headers as well:
   #
-  SET(MPI_CXX_ADD_TO_USER_INCLUDE_DIRS TRUE)
+  SET(MPI_ADD_TO_USER_INCLUDE_DIRS TRUE)
 
-  REGISTER_FEATURE(MPI_CXX)
+  REGISTER_FEATURE(MPI)
 ENDMACRO()
 
 
diff --git a/deal.II/cmake/configure/configure_1_threads.cmake b/deal.II/cmake/configure/configure_1_threads.cmake
index edd2b4cd20..c7265653bb 100644
--- a/deal.II/cmake/configure/configure_1_threads.cmake
+++ b/deal.II/cmake/configure/configure_1_threads.cmake
@@ -154,6 +154,7 @@ MACRO(FEATURE_THREADS_CONFIGURE_EXTERNAL)
 
   REGISTER_FEATURE(TBB)
 
+  # TODO: Refactor
   IF(CMAKE_BUILD_TYPE MATCHES "Debug")
     IF(TBB_WITH_DEBUG_LIB)
       LIST(APPEND DEAL_II_DEFINITIONS_DEBUG "TBB_USE_DEBUG" "TBB_DO_ASSERT=1")
@@ -173,6 +174,11 @@ MACRO(FEATURE_THREADS_CONFIGURE_EXTERNAL)
   ENDIF()
 
   SETUP_THREADING()
+
+  # TODO: Refactor this mess of a configure file...
+  SET(THREADS_LIBRARIES ${TBB_LIBRARIES})
+  SET(THREADS_INCLUDE_DIRS ${TBB_INCLUDE_DIRS})
+
 ENDMACRO()
 
 
diff --git a/deal.II/cmake/setup_finalize.cmake b/deal.II/cmake/setup_finalize.cmake
index 47318eb20a..4baa99b615 100644
--- a/deal.II/cmake/setup_finalize.cmake
+++ b/deal.II/cmake/setup_finalize.cmake
@@ -90,259 +90,3 @@ FILE(WRITE
   ${CMAKE_BINARY_DIR}/${DEAL_II_PROJECT_CONFIG_RELDIR}/${DEAL_II_PROJECT_CONFIG_NAME}Targets.cmake
   ""
   )
-
-
-########################################################################
-#                                                                      #
-#            And write a nice configuration summary to file:           #
-#                                                                      #
-########################################################################
-
-SET(_log_detailed "${CMAKE_BINARY_DIR}/detailed.log")
-SET(_log_summary  "${CMAKE_BINARY_DIR}/summary.log")
-FILE(REMOVE ${_log_detailed} ${_log_summary})
-
-MACRO(_both)
-  # Write to both log files:
-  FILE(APPEND ${_log_detailed} "${ARGN}")
-  FILE(APPEND ${_log_summary} "${ARGN}")
-ENDMACRO()
-MACRO(_detailed)
-  # Only write to detailed.log:
-  FILE(APPEND ${_log_detailed} "${ARGN}")
-ENDMACRO()
-MACRO(_summary)
-  # Only write to summary.log:
-  FILE(APPEND ${_log_summary} "${ARGN}")
-ENDMACRO()
-
-_both(
-"###
-#
-#  ${DEAL_II_PACKAGE_NAME} configuration:
-#        CMAKE_BUILD_TYPE:       ${CMAKE_BUILD_TYPE}
-#        BUILD_SHARED_LIBS:      ${BUILD_SHARED_LIBS}
-#        CMAKE_INSTALL_PREFIX:   ${CMAKE_INSTALL_PREFIX}
-#        CMAKE_SOURCE_DIR:       ${CMAKE_SOURCE_DIR} (Version ${DEAL_II_PACKAGE_VERSION})
-#        CMAKE_BINARY_DIR:       ${CMAKE_BINARY_DIR}
-#        CMAKE_CXX_COMPILER:     ${CMAKE_CXX_COMPILER_ID} ${CMAKE_CXX_COMPILER_VERSION} on platform ${CMAKE_SYSTEM_NAME} ${CMAKE_SYSTEM_PROCESSOR}
-#                                ${CMAKE_CXX_COMPILER}
-"
-  )
-
-IF(CMAKE_C_COMPILER_WORKS)
-  _detailed("#        CMAKE_C_COMPILER:       ${CMAKE_C_COMPILER}\n")
-ENDIF()
-IF(CMAKE_Fortran_COMPILER_WORKS)
-  _detailed("#        CMAKE_Fortran_COMPILER: ${CMAKE_Fortran_COMPILER}\n")
-ENDIF()
-_detailed("#        CMAKE_GENERATOR:        ${CMAKE_GENERATOR}\n")
-
-IF(CMAKE_CROSSCOMPILING)
-  _both(
-    "#\n#        CROSSCOMPILING!\n"
-    )
-ENDIF()
-
-IF(DEAL_II_STATIC_EXECUTABLE)
-  _both(
-    "#\n#        STATIC LINKAGE!\n"
-    )
-ENDIF()
-
-_both("#\n")
-
-_detailed(
-"#  Compiler flags used for this build:
-#        DEAL_II_CXX_FLAGS:            ${DEAL_II_CXX_FLAGS}
-"
-  )
-IF(CMAKE_BUILD_TYPE MATCHES "Release")
-  _detailed("#        DEAL_II_CXX_FLAGS_RELEASE:    ${DEAL_II_CXX_FLAGS_RELEASE}\n")
-ENDIF()
-IF(CMAKE_BUILD_TYPE MATCHES "Debug")
-  _detailed("#        DEAL_II_CXX_FLAGS_DEBUG:      ${DEAL_II_CXX_FLAGS_DEBUG}\n")
-ENDIF()
-
-_detailed("#        DEAL_II_LINKER_FLAGS:         ${DEAL_II_LINKER_FLAGS}\n")
-IF(CMAKE_BUILD_TYPE MATCHES "Release")
-  _detailed("#        DEAL_II_LINKER_FLAGS_RELEASE: ${DEAL_II_LINKER_FLAGS_RELEASE}\n")
-ENDIF()
-IF(CMAKE_BUILD_TYPE MATCHES "Debug")
-  _detailed("#        DEAL_II_LINKER_FLAGS_DEBUG:   ${DEAL_II_LINKER_FLAGS_DEBUG}\n")
-ENDIF()
-
-_detailed("#        DEAL_II_DEFINITIONS:          ${DEAL_II_DEFINITIONS}\n")
-IF(CMAKE_BUILD_TYPE MATCHES "Release")
-  _detailed("#        DEAL_II_DEFINITIONS_RELEASE:  ${DEAL_II_DEFINITIONS_RELEASE}\n")
-ENDIF()
-IF(CMAKE_BUILD_TYPE MATCHES "Debug")
-  _detailed("#        DEAL_II_DEFINITIONS_DEBUG:    ${DEAL_II_DEFINITIONS_DEBUG}\n")
-ENDIF()
-
-_detailed("#\n")
-
-IF(NOT DEAL_II_SETUP_DEFAULT_COMPILER_FLAGS)
-  _both("#  WARNING: DEAL_II_SETUP_DEFAULT_COMPILER_FLAGS is set to OFF\n")
-ENDIF()
-_both("#  Configured Features (")
-IF(DEFINED DEAL_II_ALLOW_BUNDLED)
-  _both("DEAL_II_ALLOW_BUNDLED = ${DEAL_II_ALLOW_BUNDLED}, ")
-ENDIF()
-IF(DEAL_II_FORCE_AUTODETECTION)
-  _both("!!! DEAL_II_FORCE_AUTODETECTION=ON !!!, ")
-ENDIF()
-_both("DEAL_II_ALLOW_AUTODETECTION = ${DEAL_II_ALLOW_AUTODETECTION}):\n")
-
-
-#
-# Cache for quicker access to avoid the O(n^2) complexity of a loop over
-# _all_ defined variables.
-#
-GET_CMAKE_PROPERTY(_variables VARIABLES)
-FOREACH(_var ${_variables})
-  IF(_var MATCHES "DEAL_II_WITH")
-    LIST(APPEND _features "${_var}")
-  ELSEIF(_var MATCHES "DEAL_II_COMPONENT")
-    LIST(APPEND _components "${_var}")
-  ELSEIF(_var MATCHES "(MPI_CXX_COMPILER|MPI_CXX_COMPILE_FLAGS|MPI_CXX_LINK_FLAGS)")
-    LIST(APPEND _features_config ${_var})
-  ELSEIF(_var MATCHES "(LIBRARIES|INCLUDE_PATH|INCLUDE_DIRS|LINKER_FLAGS)")
-    LIST(APPEND _features_config ${_var})
-  ENDIF()
-ENDFOREACH()
-
-FOREACH(_var ${_features})
-  IF(${${_var}})
-    # FEATURE is enabled
-    STRING(REGEX REPLACE "^DEAL_II_WITH_" "" _feature ${_var})
-    IF(FEATURE_${_feature}_EXTERNAL_CONFIGURED)
-      _both("#        ${_var} set up with external dependencies\n")
-
-      #
-      # Print out version number:
-      #
-      IF(DEFINED ${_feature}_VERSION)
-        _detailed("#            ${_feature}_VERSION = ${${_feature}_VERSION}\n")
-      ELSEIF(_feature MATCHES "THREADS" AND DEFINED TBB_VERSION)
-        _detailed("#            TBB_VERSION = ${TBB_VERSION}\n")
-      ENDIF()
-
-      IF(_feature MATCHES "MPI" AND DEFINED OMPI_VERSION)
-        _detailed("#            OMPI_VERSION = ${OMPI_VERSION}\n")
-      ENDIF()
-
-      #
-      # Print out ${_feature}_DIR:
-      #
-      IF(DEFINED ${_feature}_DIR)
-        _detailed("#            ${_feature}_DIR = ${${_feature}_DIR}\n")
-      ENDIF()
-
-      #
-      # Print the feature configuration:
-      #
-      FOREACH(_var2 ${_features_config})
-        IF( # MPI:
-            _var2 MATCHES "^${_feature}_CXX_(COMPILER|COMPILE_FLAGS|LINK_FLAGS|LIBRARIES|INCLUDE_PATH)$" OR
-            # Boost:
-            ( _feature MATCHES "BOOST" AND _var2 MATCHES "^BOOST_(LIBRARIES|INCLUDE_DIRS)$" ) OR
-            # TBB:
-            ( _feature MATCHES "THREADS" AND _var2 MATCHES "^TBB_(LIBRARIES|INCLUDE_DIRS)$" ) OR
-            # Generic:
-            ( (NOT _var2 MATCHES "^(MPI|Boost)") AND
-              _var2 MATCHES "^${_feature}_(INCLUDE_DIRS|LIBRARIES|LINKER_FLAGS)$" )
-          )
-          _detailed("#            ${_var2} = ${${_var2}}\n")
-        ENDIF()
-      ENDFOREACH()
-
-    ELSEIF(FEATURE_${_feature}_BUNDLED_CONFIGURED)
-      IF(DEAL_II_FORCE_BUNDLED_${_feature})
-        _both("#        ${_var} set up with bundled packages (forced)\n")
-      ELSE()
-        _both("#        ${_var} set up with bundled packages\n")
-      ENDIF()
-    ELSE()
-     _both("#        ${_var} = ${${_var}}\n")
-    ENDIF()
-  ELSE()
-    # FEATURE is disabled
-    _both("#      ( ${_var} = ${${_var}} )\n")
-  ENDIF()
-ENDFOREACH()
-
-_both(
-  "#\n#  Component configuration:\n"
-  )
-FOREACH(_var ${_components})
-  IF(_var MATCHES "DEAL_II_COMPONENT")
-    IF(${${_var}})
-      _both("#        ${_var}\n")
-      STRING(REPLACE "DEAL_II_COMPONENT_" "" _component ${_var})
-      LIST(APPEND _components ${_component})
-    ELSE()
-      _both("#      ( ${_var} = ${${_var}} )\n")
-    ENDIF()
-  ENDIF()
-ENDFOREACH()
-
-_summary(
-"#\n#  Detailed information (compiler flags, feature configuration) can be found in detailed.log
-#\n#  Run  $ "
-  )
-IF(CMAKE_GENERATOR MATCHES "Ninja")
-  _summary("ninja info")
-ELSE()
-_summary("make help")
-ENDIF()
-_summary("  to print a help message with a list of top level targets\n")
-
-_both("#\n###")
-
-
-########################################################################
-#                                                                      #
-#                    Dump the cache into config.cmake:                 #
-#                                                                      #
-########################################################################
-
-SET(_config_cmake "${CMAKE_BINARY_DIR}/config.cmake")
-FILE(WRITE ${_config_cmake}
-"#
-# This is a raw CMake cache dump of this build directory suitable as an
-# initial cache file: Use this file to preseed a CMake cache in an empty
-# build directory by (note that it is still necessary to declare a source
-# directory):
-#   $ cmake -C [...]/config.cmake ../deal.II
-#
-# If you want to have a clean configuration file have a look at
-# doc/users/config.sample
-#\n"
-  )
-
-FUNCTION(_config _var)
-  # It is absolutely beyond my comprehension why on earth there is
-  # hardcoded logic built into CMake to throw an error if one uses
-  # uppercase variants of FindPACKAGE call variables...
-  IF(NOT _var MATCHES "BOOST_DIR")
-    UNSET(${_var})
-  ENDIF()
-  #
-  # We have to get down to the raw entry in the cache, therefore clear the
-  # current value (and do it in a function to get private scope):
-  #
-  FILE(APPEND ${_config_cmake}
-    "SET(${_var} \"${${_var}}\" CACHE STRING \"\")\n"
-    )
-ENDFUNCTION()
-
-GET_CMAKE_PROPERTY(_variables CACHE_VARIABLES)
-FOREACH(_var
-    CMAKE_C_COMPILER
-    CMAKE_CXX_COMPILER
-    CMAKE_Fortran_COMPILER
-    ${_variables}
-    )
-  _config(${_var})
-ENDFOREACH()
diff --git a/deal.II/cmake/setup_write_config.cmake b/deal.II/cmake/setup_write_config.cmake
new file mode 100644
index 0000000000..f3062a3907
--- /dev/null
+++ b/deal.II/cmake/setup_write_config.cmake
@@ -0,0 +1,268 @@
+## ---------------------------------------------------------------------
+## $Id$
+##
+## Copyright (C) 2012 - 2013 by the deal.II authors
+##
+## This file is part of the deal.II library.
+##
+## The deal.II 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 2.1 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 deal.II distribution.
+##
+## ---------------------------------------------------------------------
+
+
+########################################################################
+#                                                                      #
+#              Write a nice configuration summary to file:             #
+#                                                                      #
+########################################################################
+
+SET(_log_detailed "${CMAKE_BINARY_DIR}/detailed.log")
+SET(_log_summary  "${CMAKE_BINARY_DIR}/summary.log")
+FILE(REMOVE ${_log_detailed} ${_log_summary})
+
+MACRO(_both)
+  # Write to both log files:
+  FILE(APPEND ${_log_detailed} "${ARGN}")
+  FILE(APPEND ${_log_summary} "${ARGN}")
+ENDMACRO()
+MACRO(_detailed)
+  # Only write to detailed.log:
+  FILE(APPEND ${_log_detailed} "${ARGN}")
+ENDMACRO()
+MACRO(_summary)
+  # Only write to summary.log:
+  FILE(APPEND ${_log_summary} "${ARGN}")
+ENDMACRO()
+
+_both(
+"###
+#
+#  ${DEAL_II_PACKAGE_NAME} configuration:
+#        CMAKE_BUILD_TYPE:       ${CMAKE_BUILD_TYPE}
+#        BUILD_SHARED_LIBS:      ${BUILD_SHARED_LIBS}
+#        CMAKE_INSTALL_PREFIX:   ${CMAKE_INSTALL_PREFIX}
+#        CMAKE_SOURCE_DIR:       ${CMAKE_SOURCE_DIR} (Version ${DEAL_II_PACKAGE_VERSION})
+#        CMAKE_BINARY_DIR:       ${CMAKE_BINARY_DIR}
+#        CMAKE_CXX_COMPILER:     ${CMAKE_CXX_COMPILER_ID} ${CMAKE_CXX_COMPILER_VERSION} on platform ${CMAKE_SYSTEM_NAME} ${CMAKE_SYSTEM_PROCESSOR}
+#                                ${CMAKE_CXX_COMPILER}
+"
+  )
+
+IF(CMAKE_C_COMPILER_WORKS)
+  _detailed("#        CMAKE_C_COMPILER:       ${CMAKE_C_COMPILER}\n")
+ENDIF()
+IF(CMAKE_Fortran_COMPILER_WORKS)
+  _detailed("#        CMAKE_Fortran_COMPILER: ${CMAKE_Fortran_COMPILER}\n")
+ENDIF()
+_detailed("#        CMAKE_GENERATOR:        ${CMAKE_GENERATOR}\n")
+
+IF(CMAKE_CROSSCOMPILING)
+  _both(
+    "#\n#        CROSSCOMPILING!\n"
+    )
+ENDIF()
+
+IF(DEAL_II_STATIC_EXECUTABLE)
+  _both(
+    "#\n#        STATIC LINKAGE!\n"
+    )
+ENDIF()
+
+_both("#\n")
+
+_detailed(
+"#  Compiler flags used for this build:
+#        DEAL_II_CXX_FLAGS:            ${DEAL_II_CXX_FLAGS}
+"
+  )
+IF(CMAKE_BUILD_TYPE MATCHES "Release")
+  _detailed("#        DEAL_II_CXX_FLAGS_RELEASE:    ${DEAL_II_CXX_FLAGS_RELEASE}\n")
+ENDIF()
+IF(CMAKE_BUILD_TYPE MATCHES "Debug")
+  _detailed("#        DEAL_II_CXX_FLAGS_DEBUG:      ${DEAL_II_CXX_FLAGS_DEBUG}\n")
+ENDIF()
+
+_detailed("#        DEAL_II_LINKER_FLAGS:         ${DEAL_II_LINKER_FLAGS}\n")
+IF(CMAKE_BUILD_TYPE MATCHES "Release")
+  _detailed("#        DEAL_II_LINKER_FLAGS_RELEASE: ${DEAL_II_LINKER_FLAGS_RELEASE}\n")
+ENDIF()
+IF(CMAKE_BUILD_TYPE MATCHES "Debug")
+  _detailed("#        DEAL_II_LINKER_FLAGS_DEBUG:   ${DEAL_II_LINKER_FLAGS_DEBUG}\n")
+ENDIF()
+
+_detailed("#        DEAL_II_DEFINITIONS:          ${DEAL_II_DEFINITIONS}\n")
+IF(CMAKE_BUILD_TYPE MATCHES "Release")
+  _detailed("#        DEAL_II_DEFINITIONS_RELEASE:  ${DEAL_II_DEFINITIONS_RELEASE}\n")
+ENDIF()
+IF(CMAKE_BUILD_TYPE MATCHES "Debug")
+  _detailed("#        DEAL_II_DEFINITIONS_DEBUG:    ${DEAL_II_DEFINITIONS_DEBUG}\n")
+ENDIF()
+
+_detailed("#\n")
+
+IF(NOT DEAL_II_SETUP_DEFAULT_COMPILER_FLAGS)
+  _both("#  WARNING: DEAL_II_SETUP_DEFAULT_COMPILER_FLAGS is set to OFF\n")
+ENDIF()
+_both("#  Configured Features (")
+IF(DEFINED DEAL_II_ALLOW_BUNDLED)
+  _both("DEAL_II_ALLOW_BUNDLED = ${DEAL_II_ALLOW_BUNDLED}, ")
+ENDIF()
+IF(DEAL_II_FORCE_AUTODETECTION)
+  _both("!!! DEAL_II_FORCE_AUTODETECTION=ON !!!, ")
+ENDIF()
+_both("DEAL_II_ALLOW_AUTODETECTION = ${DEAL_II_ALLOW_AUTODETECTION}):\n")
+
+
+#
+# Cache for quicker access to avoid the O(n^2) complexity of a loop over
+# _all_ defined variables.
+#
+
+GET_CMAKE_PROPERTY(_variables VARIABLES)
+FOREACH(_var ${_variables})
+  IF(_var MATCHES "DEAL_II_WITH")
+    LIST(APPEND _features "${_var}")
+  ELSEIF(_var MATCHES "DEAL_II_COMPONENT")
+    LIST(APPEND _components "${_var}")
+  ENDIF()
+ENDFOREACH()
+
+FOREACH(_var ${_features})
+  IF(${${_var}})
+    # FEATURE is enabled
+    STRING(REGEX REPLACE "^DEAL_II_WITH_" "" _feature ${_var})
+    IF(FEATURE_${_feature}_EXTERNAL_CONFIGURED)
+      _both("#        ${_var} set up with external dependencies\n")
+
+      #
+      # Print out version number:
+      #
+      IF(DEFINED ${_feature}_VERSION)
+        _detailed("#            ${_feature}_VERSION = ${${_feature}_VERSION}\n")
+      ENDIF()
+
+      #
+      # Special version numbers:
+      #
+      IF(_feature MATCHES "THREADS" AND DEFINED TBB_VERSION)
+        _detailed("#            TBB_VERSION = ${TBB_VERSION}\n")
+      ENDIF()
+      IF(_feature MATCHES "MPI" AND DEFINED OMPI_VERSION)
+        _detailed("#            OMPI_VERSION = ${OMPI_VERSION}\n")
+      ENDIF()
+
+      #
+      # Print out ${_feature}_DIR:
+      #
+      IF(NOT "${${_feature}_DIR}" STREQUAL "")
+        _detailed("#            ${_feature}_DIR = ${${_feature}_DIR}\n")
+      ENDIF()
+
+      #
+      # Print the feature configuration:
+      #
+      FOREACH(_var2
+          CXX_COMPILER C_COMPILER Fortran_COMPILER LIBRARIES INCLUDE_DIRS
+          USER_INCLUDE_DIRS DEFINITIONS USER_DEFINITIONS CXX_FLAGS
+          LINKER_FLAGS
+        )
+        IF(DEFINED ${_feature}_${_var2})
+          _detailed("#            ${_feature}_${_var2} = ${${_feature}_${_var2}}\n")
+        ENDIF()
+      ENDFOREACH()
+
+    ELSEIF(FEATURE_${_feature}_BUNDLED_CONFIGURED)
+
+      IF(DEAL_II_FORCE_BUNDLED_${_feature})
+        _both("#        ${_var} set up with bundled packages (forced)\n")
+      ELSE()
+        _both("#        ${_var} set up with bundled packages\n")
+      ENDIF()
+    ELSE()
+     _both("#        ${_var} = ${${_var}}\n")
+    ENDIF()
+  ELSE()
+    # FEATURE is disabled
+    _both("#      ( ${_var} = ${${_var}} )\n")
+  ENDIF()
+ENDFOREACH()
+
+_both(
+  "#\n#  Component configuration:\n"
+  )
+FOREACH(_var ${_components})
+  IF(_var MATCHES "DEAL_II_COMPONENT")
+    IF(${${_var}})
+      _both("#        ${_var}\n")
+      STRING(REPLACE "DEAL_II_COMPONENT_" "" _component ${_var})
+      LIST(APPEND _components ${_component})
+    ELSE()
+      _both("#      ( ${_var} = ${${_var}} )\n")
+    ENDIF()
+  ENDIF()
+ENDFOREACH()
+
+_summary(
+"#\n#  Detailed information (compiler flags, feature configuration) can be found in detailed.log
+#\n#  Run  $ "
+  )
+IF(CMAKE_GENERATOR MATCHES "Ninja")
+  _summary("ninja info")
+ELSE()
+_summary("make help")
+ENDIF()
+_summary("  to print a help message with a list of top level targets\n")
+
+_both("#\n###")
+
+
+########################################################################
+#                                                                      #
+#                    Dump the cache into config.cmake:                 #
+#                                                                      #
+########################################################################
+
+SET(_config_cmake "${CMAKE_BINARY_DIR}/config.cmake")
+FILE(WRITE ${_config_cmake}
+"#
+# This is a raw CMake cache dump of this build directory suitable as an
+# initial cache file: Use this file to preseed a CMake cache in an empty
+# build directory by (note that it is still necessary to declare a source
+# directory):
+#   $ cmake -C [...]/config.cmake ../deal.II
+#
+# If you want to have a clean configuration file have a look at
+# doc/users/config.sample
+#\n"
+  )
+
+FUNCTION(_config _var)
+  # It is absolutely beyond my comprehension why on earth there is
+  # hardcoded logic built into CMake to throw an error if one uses
+  # uppercase variants of FindPACKAGE call variables...
+  IF(NOT _var MATCHES "BOOST_DIR")
+    UNSET(${_var})
+  ENDIF()
+  #
+  # We have to get down to the raw entry in the cache, therefore clear the
+  # current value (and do it in a function to get private scope):
+  #
+  FILE(APPEND ${_config_cmake}
+    "SET(${_var} \"${${_var}}\" CACHE STRING \"\")\n"
+    )
+ENDFUNCTION()
+
+GET_CMAKE_PROPERTY(_variables CACHE_VARIABLES)
+FOREACH(_var
+    CMAKE_C_COMPILER
+    CMAKE_CXX_COMPILER
+    CMAKE_Fortran_COMPILER
+    ${_variables}
+    )
+  _config(${_var})
+ENDFOREACH()