added CMake build structure for the example in unstructured grids

CMakeLists.txt

+
+# ==================================================================================================
+# This file is part of the CodeVault project. The project is licensed under Apache Version 2.0.
+# CodeVault is part of the EU-project PRACE-4IP (WP7.3.C).
+#
+# Author(s):
+#   Evghenii Gaburov <evghenii.gaburov@surfsara.nl>
+#
+# ==================================================================================================
+
+# CMake project
+cmake_minimum_required(VERSION 2.8.10 FATAL_ERROR)
+project("8_unstructured")
+include(${CMAKE_CURRENT_SOURCE_DIR}/../../cmake/common.cmake)
+
+# ==================================================================================================
+
+# Dwarf 8: Unstructured grids
+message("--------------------")
+message("Dwarf 8: Unstructured grids:")
+message("--------------------")
+set(DWARF_PREFIX 8_unstructured) # The prefix of the name of the binaries produced
+
+# Add the examples
+add_subdirectory(halo_exchange)
+
+# ==================================================================================================
+
+
+
+

halo_exchange/CMakeLists.txt

+# Packages are optional: if they are not present, certain code samples are not compiled
+cmake_minimum_required(VERSION 2.8.10 FATAL_ERROR)
+
+find_package(MPI)      # Built-in in CMake
+
+include(${CMAKE_CURRENT_SOURCE_DIR}/../../../cmake/common.cmake)
+
+# ==================================================================================================
+
+if ("${DWARF_PREFIX}" STREQUAL "")
+  set(DWARF_PREFIX 8_unstructured)
+endif()
+
+set(NAME ${DWARF_PREFIX}_halo_exchange)
+
+# C compiler settings
+
+find_package(Common)
+
+if (MPI_FOUND)
+    cmake_policy(SET CMP0003 OLD)
+    set (CMAKE_C_FLAGS "${CMAKE_C_FLAGS}")
+    include_directories(${MPI_INCLUDE_PATH})
+    add_executable(${NAME} main.c configuration.c mpicomm.c mpitypes.c box.c field.c mesh.c)
+    target_link_libraries(${NAME} ${MPI_LIBRARIES} stdc++)
+    install(TARGETS ${NAME} DESTINATION bin)
+    message("** Enabling '${NAME}': with MPI")
+else()
+    message("## Skipping '${NAME}': no MPI support found")
+#    dummy_install(${NAME} "MPI")
+endif()
+
+set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${C_FLAGS}")
+
+unset(NAME)
+# ==================================================================================================