Replaced metis submodule with CPM.

.gitmodules

-[submodule "ThirdParty/metis"]
-	path = ThirdParty/metis
-	url = https://github.com/scibuilder/metis.git
 [submodule "ThirdParty/SwmmInterface"]
 	path = ThirdParty/SwmmInterface
 	url = https://github.com/ufz/SwmmInterface.git

Applications/Utils/ModelPreparation/PartitionMesh/CMakeLists.txt

+CPMAddPackage(
+    NAME metis
+    GITHUB_REPOSITORY scibuilder/metis
+    GIT_TAG 982842a5ace9b3da2b2800817eb9e5fd3b42966b
+    DOWNLOAD_ONLY YES
+)
+include(${PROJECT_SOURCE_DIR}/scripts/cmake/MetisSetup.cmake)
+
 add_executable(partmesh PartitionMesh.cpp Metis.cpp NodeWiseMeshPartitioner.cpp)
 set_target_properties(partmesh PROPERTIES FOLDER Utilities)
 target_link_libraries(partmesh GitInfoLib MeshLib tclap)

ThirdParty/CMakeLists.txt

@@ -67,11 +67,6 @@ if(OGS_USE_PYTHON)
 
 endif()
 
-if(OGS_BUILD_UTILS)
-    include(${PROJECT_SOURCE_DIR}/scripts/cmake/MetisSetup.cmake)
-    list(APPEND DISABLE_WARNINGS_TARGETS ogs_metis mpmetis)
-endif()
-
 if(OGS_USE_XDMF)
     find_package(ZLIB REQUIRED) # ZLIB is a HDF5 dependency
     set(XDMF_LIBNAME OgsXdmf CACHE INTERNAL "")

metis @ 982842a5

-Subproject commit 982842a5ace9b3da2b2800817eb9e5fd3b42966b

scripts/cmake/MetisSetup.cmake

 message( STATUS "The METIS package is copyrighted by the Regents of the University of Minnesota." )
 message( STATUS "Please read the license of the METIS package carefully before you use the METIS." )
 
-set(METIS_PATH ${PROJECT_SOURCE_DIR}/ThirdParty/metis)
+set(METIS_PATH ${metis_SOURCE_DIR})
 add_definitions(-DUSE_GKREGEX)
 set(GKLIB_PATH "${METIS_PATH}/GKlib" CACHE PATH "path to GKlib")
 

scripts/cmake/SubmoduleSetup.cmake

@@ -9,10 +9,6 @@ set(REQUIRED_SUBMODULES
 if(OGS_USE_XDMF)
     list(APPEND REQUIRED_SUBMODULES ThirdParty/xdmf)
 endif()
-if(OGS_BUILD_UTILS)
-    # Required by the partmesh tool, which is build with utils only.
-    list(APPEND REQUIRED_SUBMODULES ThirdParty/metis)
-endif()
 if(OGS_BUILD_SWMM)
     list(APPEND REQUIRED_SUBMODULES ThirdParty/SwmmInterface)
 endif()