started Cmake

CMakeLists.txt

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+cmake_minimum_required( VERSION 3.16 )
+
+include(cmake/GitProjectVersion.cmake)
+
+project( T8CODE_ADAPTIVE_RES
+    DESCRIPTION "AMR data structures to switch between different resolutions of data adaptively and fast"
+    LANGUAGES CXX 
+    VERSION "${ADAPTIVERESOLUTION_VERSION_MAJOR}.${ADAPTIVERESOLUTION_VERSION_MINOR}.${ADAPTIVERESOLUTION_VERSION_PATCH}"
+)
+include (CTest )
+
+find_package(T8CODE)

cmake/GitProjectVersion.cmake

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+find_package( Git REQUIRED )
+
+# Copied from t8code
+
+execute_process( COMMAND ${GIT_EXECUTABLE} describe --tags --dirty
+                 COMMAND cut -c 2-
+                 WORKING_DIRECTORY ${CMAKE_CURRENT_LIST_DIR}
+                 OUTPUT_VARIABLE ADAPTIVERESOLUTION_VERSION_RAW
+                 OUTPUT_STRIP_TRAILING_WHITESPACE )
+execute_process( COMMAND echo ${ADAPTIVERESOLUTION_VERSION_RAW}
+                 COMMAND cut -d- -f1
+                 OUTPUT_VARIABLE ADAPTIVERESOLUTION_VERSION_NUMBERS
+                 OUTPUT_STRIP_TRAILING_WHITESPACE )
+execute_process( COMMAND echo ${ADAPTIVERESOLUTION_VERSION_RAW}
+                 COMMAND cut -d- -f2-
+                 OUTPUT_VARIABLE ADAPTIVERESOLUTION_VERSION_POINT
+                 OUTPUT_STRIP_TRAILING_WHITESPACE )
+execute_process( COMMAND echo ${ADAPTIVERESOLUTION_VERSION_NUMBERS}
+                 COMMAND cut -d. -f1
+                 OUTPUT_VARIABLE ADAPTIVERESOLUTION_VERSION_MAJOR
+                 OUTPUT_STRIP_TRAILING_WHITESPACE )
+execute_process( COMMAND echo ${ADAPTIVERESOLUTION_VERSION_NUMBERS}
+                 COMMAND cut -d. -f2
+                 OUTPUT_VARIABLE ADAPTIVERESOLUTION_VERSION_MINOR
+                 OUTPUT_STRIP_TRAILING_WHITESPACE )
+execute_process( COMMAND echo ${ADAPTIVERESOLUTION_VERSION_NUMBERS}
+                 COMMAND cut -d. -f3
+                 OUTPUT_VARIABLE ADAPTIVERESOLUTION_VERSION_PATCH
+                 OUTPUT_STRIP_TRAILING_WHITESPACE )
+
+message("${ADAPTIVERESOLUTION_VERSION_RAW}")
+# To reuse the version in other CMakeLists.
+set(ADAPTIVERESOLUTION_VERSION ${ADAPTIVERESOLUTION_VERSION_NUMBERS} CACHE INTERNAL "")