Updated installation

opencarp/CMakeLists.txt

@@ -10,20 +10,4 @@ include_directories(zlib)
 add_subdirectory(zlib)
 
 include_directories(openCARP)
-add_subdirectory(openCARP)
-
-if(BUILD_EXAMPLES)
-    # install carputils
-    install(DIRECTORY "${CMAKE_CURRENT_LIST_DIR}/external/carputils"
-            DESTINATION share COMPONENT carputils
-            USE_SOURCE_PERMISSIONS
-            PATTERN ".*" EXCLUDE
-            )
-
-    # install openCARP examples
-    install(DIRECTORY "${CMAKE_CURRENT_LIST_DIR}/external/tutorials"
-            DESTINATION share COMPONENT examples
-            USE_SOURCE_PERMISSIONS
-            PATTERN ".*" EXCLUDE
-            )
-endif()
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+add_subdirectory(openCARP)
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opencarp/README.md

+To install the openCARP codewithin M++, run the following commands:
+
+### Installation
+
+Make sure to install crucial packages on your machine:
+
+```sudo apt-get install gengetopt```
+
+### Downloading submodules:
+
+The submodules used in openCARP have to be updated manually, as the repositories have a respectable file size.
+They are updated with the following commands:
+
+```
+git -c submodule."opencarp/petsc".update=checkout submodule update --init --recursive
+git -c submodule."opencarp/openCARP".update=checkout submodule update --init --recursive
+```
+
+### Installing PetSc
+
+To install petsc, the following command should work:
+
+```
+cd petsc
+./configure --prefix=../include/petsc --download-mpich --download-fblaslapack --download-metis --download-parmetis --download-hypre
+make all
+make install
+```
+
+### Installing openCARP
+Make sure you are in the top-level `opencarp` again. Then run
+
+```
+cmake -S. -B_build -DDLOPEN=ON -DBUILD_EXTERNAL=ON -DCMAKE_BUILD_TYPE=Release
+cd _build
+make all
+```
+Now all code files are generated in the `openCARP` folder. 
+The compiled code can now be found in `_build/openCARP/bin`
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