cmake/modules/AddGMPFlags.cmake

@@ -9,6 +9,7 @@
 #
 #       A list of targets to use GMP with.
 #
+include_guard(GLOBAL)
 
 # set HAVE_GMP for the config.h file
 set(HAVE_GMP ${GMP_FOUND})

cmake/modules/AddMETISFlags.cmake

@@ -9,6 +9,7 @@
 #
 #       A list of targets to use METIS with.
 #
+include_guard(GLOBAL)
 
 # register HAVE_METIS for config.h
 set(HAVE_METIS ${METIS_FOUND})

cmake/modules/AddPTScotchFlags.cmake

@@ -9,6 +9,7 @@
 #
 #       A list of targets to use PTScotch with.
 #
+include_guard(GLOBAL)
 
 # set HAVE_PTSCOTCH for config.h
 set(HAVE_PTSCOTCH ${PTScotch_FOUND})

cmake/modules/AddParMETISFlags.cmake

@@ -9,6 +9,7 @@
 #
 #       A list of targets to use ParMETIS with.
 #
+include_guard(GLOBAL)
 
 # set HAVE_PARMETIS for config.h
 set(HAVE_PARMETIS ${ParMETIS_FOUND})

cmake/modules/AddQuadMathFlags.cmake

@@ -9,6 +9,7 @@
 #
 #       A list of targets to use QuadMath with.
 #
+include_guard(GLOBAL)
 
 # set HAVE_QUADMATH for config.h
 set(HAVE_QUADMATH ${QuadMath_FOUND})

cmake/modules/AddSuiteSparseFlags.cmake

@@ -9,6 +9,7 @@
 #
 #       A list of targets to use SuiteSparse with.
 #
+include_guard(GLOBAL)
 
 # set HAVE_SUITESPARSE for config.h
 set(HAVE_SUITESPARSE ${SuiteSparse_FOUND})

cmake/modules/AddTBBFlags.cmake

@@ -9,6 +9,7 @@
 #
 #       A list of targets to use TBB with.
 #
+include_guard(GLOBAL)
 
 # set variable for config.h
 set(HAVE_TBB ${TBB_FOUND})

cmake/modules/AddThreadsFlags.cmake

-# Always link threading libraries to targets
+include_guard(GLOBAL)
 
 # text for feature summary
 set_package_properties("Threads" PROPERTIES

cmake/modules/AddVcFlags.cmake

@@ -12,6 +12,7 @@
 #
 #       A list of targets to use VC with.
 #
+include_guard(GLOBAL)
 
 # text for feature summary
 set_package_properties("Vc" PROPERTIES

cmake/modules/DuneAddPybind11Module.cmake

@@ -42,6 +42,7 @@
 #       Example: Write CMAKE_GUARD dune-foo_FOUND if you want your module to only
 #       build when the dune-foo module is present.
 #
+include_guard(GLOBAL)
 
 function(dune_add_pybind11_module)
   include(CMakeParseArguments)

cmake/modules/DuneCMakeCompat.cmake

@@ -44,7 +44,7 @@
 #
 #    This is exactly the same as the ``list(FILTER ...)`` command available in
 #    cmake 3.7 and onward.
-
+include_guard(GLOBAL)
 
 # list(FILTER...) was introduced in cmake 3.6, this is a compatibility
 # implementation for earlier cmakes

cmake/modules/DuneCxaDemangle.cmake

@@ -4,6 +4,7 @@
 #
 # It sets the variable :code:`HAVE_CXA_DEMANGLE` with the result.
 #
+include_guard(GLOBAL)
 
 include(CheckCXXSourceCompiles)
 

cmake/modules/DuneDoc.cmake

@@ -48,6 +48,7 @@
 #       target. See https://gitlab.kitware.com/cmake/cmake/issues/8438
 #       and https://gitlab.dune-project.org/core/dune-common/issues/36
 #
+include_guard(GLOBAL)
 
 include(UseLatexMk)
 

cmake/modules/DuneDoxygen.cmake

@@ -23,6 +23,7 @@
 #    The documentation is built during the top-level :code:`make doc` call. We have added a dependency
 #    that makes sure it is built before running :code:`make install`.
 #
+include_guard(GLOBAL)
 
 find_package(Doxygen)
 set_package_properties("Doxygen" PROPERTIES

cmake/modules/DuneEnableAllPackages.cmake

@@ -140,6 +140,7 @@
 #
 #    Register sources for module exported library.
 #
+include_guard(GLOBAL)
 
 function(dune_register_package_flags)
   include(CMakeParseArguments)

cmake/modules/DuneExecuteProcess.cmake

@@ -13,6 +13,7 @@
 #    exits on non-zero exit codes. All arguments are forwarded to the actual
 #    cmake command.
 #
+include_guard(GLOBAL)
 
 function(dune_execute_process)
   include(CMakeParseArguments)

cmake/modules/DuneInstance.cmake

@@ -463,7 +463,6 @@
 #    :ref:`dune_instance_begin()
 #    <dune_instance_begin>`/:ref:`dune_instance_end() <dune_instance_end>`
 #    block.
-
 include_guard(GLOBAL)
 
 # macro to print additional information to the cmake output file.

cmake/modules/DuneMPI.cmake

@@ -19,7 +19,7 @@
 #
 #       The target list to add the MPI flags to.
 #
-
+include_guard(GLOBAL)
 
 find_package(MPI 3.0 COMPONENTS C)
 

cmake/modules/DuneMacros.cmake

@@ -132,6 +132,7 @@
 # of all dependent modules.
 # Finally config.h is created from config_collected.h.cmake.
 #
+include_guard(GLOBAL)
 
 enable_language(C) # Enable C to skip CXX bindings for some tests.
 

cmake/modules/DunePathHelper.cmake

@@ -41,6 +41,7 @@
 #    requiring or suggesting this module. One and only one type of path
 #    may be requested.
 #
+include_guard(GLOBAL)
 
 function(dune_module_path)
   # Parse Arguments