diff --git a/lib/parquet/generate_deps.py b/lib/parquet/generate_deps.py
new file mode 100644
index 0000000..818b569
--- /dev/null
+++ b/lib/parquet/generate_deps.py
@@ -0,0 +1,26 @@
+#-----------------------------------------------------------------------------#
+
+import argparse
+
+#-----------------------------------------------------------------------------#
+
+parser = argparse.ArgumentParser(description='List all source dependencies')
+parser.add_argument('pathToRepo',type=str,help='path of source repository')
+parser.add_argument('mainSource',type=str,help='main source file')
+parser.add_argument('depFile',type=str,help='file listing all dependencies')
+args = parser.parse_args()
+
+#-----------------------------------------------------------------------------#
+
+def find_dependencies(srcfile, repopath) :
+    """
+    Given a source file and its dependencies in the given repository path
+    list all further dependencies recursively
+    """
+
+if __name__== "__main__":
+
+    print("\nCLI arguments:\n" + str(args))
+
+
+#-----------------------------------------------------------------------------#
diff --git a/lib/parquet/setup-sources.sh b/lib/parquet/setup-sources.sh
index f061230..8cc54bc 100755
--- a/lib/parquet/setup-sources.sh
+++ b/lib/parquet/setup-sources.sh
@@ -1,70 +1,171 @@
 #!/bin/bash
 
+#-----------------------------------------------------------------------------#
+
+# NOTE: before starting to extract the minimal required sources and dependencies
+#       run
+#       $ cd cpp/
+#       $ cmake -D ARROW_PARQUET=ON
+#      in the arrow repository
+
 # provide
 # - local path of clone of https://github.com/apache/arrow.git
 # - name/path of main .hpp file of cython extension
 repo="$1"
 main="$2"
+depf="$3"
 
 # check CLI arguments
-if [ -z "$repo" ] || [ -z "$main" ]; then
-  echo "please provide local path of arrow repository and name of main .hpp/.cpp"
-  echo -e "example:\n./setup-sources.sh /home/mario/Desktop/Record_Evolution/arrow/ reader-writer.cc"
+if [ -z "$repo" ] || [ -z "$main" ] || [ -z "$depf" ]; then
+  echo "please provide..."
+  echo "1. local path of arrow repository"
+  echo "2. name of main .hpp/.cpp"
+  echo "3. desired name of dependency file"
+  echo -e "example:\n./setup-sources.sh /home/mario/Desktop/Record_Evolution/arrow/ reader-writer.cc deps.log"
   exit 1
 fi
 
-echo -e "extracting sources from/for \n1: ${repo}\n2: ${main}\n"
+echo -e "extracting sources from/for \n1: ${repo}\n2: ${main}\n3: ${depf}\n"
 
-# generate dependency file
-echo -e "generate dependencies:\ng++ -c -MMD ${main} -I ./ -I ${repo}cpp/src/\n"
-g++ -c -MMD ${main} -I ${repo}cpp/src/
+# make sure the dependency file is empty
+rm -f ${depf}
+touch ${depf}
 
-# derive name of dependency file
-dep=$(echo ${main} | sed 's/.cc/.d/g')
+# define maximal recursion depth
+maxdep=8
 
-if [ -f "$dep" ]; then
+#-----------------------------------------------------------------------------#
 
-  # list dependencies
-  cat ${dep} | sed 's/ /\n/g' | awk 'NF' | grep -v '\\' | grep '\/' > deps.log
+# define function to list dependencies of source file in repository recursively
+listDependencies()
+{
+  rep="$1"
+  src="$2"
+  dep="$3"
+  rec="$4"
 
-  # extract list of headers
-  cat deps.log | sed ':a;N;$!ba;s/\n/ /g' > deps-headers.log
-  echo "list of required headers ($(cat deps.log | wc -l))"
-  cat deps-headers.log
-  echo ""
+  echo -e "\nstarting 'listDependencies()' for\n1. ${rep}\n2. ${src}\n3. ${dep}\n4. ${rec}"
 
-  # imply list of sources
-  cat deps.log | sed 's/.h$/.cc/g' | sed 's/.hpp$/.cpp/g' > sources_raw.log
-  cat sources_raw.log | while read f
+  # generate dependency file (and remove resulting object file)
+  echo -e "g++ -c -MMD ${src} -I ${rep}cpp/src/\n"
+  g++ -c -MMD ${src} -I ${rep}cpp/src/
+
+  # derive name of dependency and object files
+  depf=$(basename ${src} | sed 's/.cc/.d/g')
+  objf=$(basename ${src} | sed 's/.cc/.o/g')
+  rm ${objf}
+
+  # list dependencies by
+  # 1. removing header
+  # 2. remove source itself
+  # 3. delete leading spaces
+  # 4. delete trailing backslashs
+  # 5. remove empty lines
+  cat ${depf} | grep ${rep} | grep -v ${src} | tr -d "^ " | tr -d "\\\\" | awk 'NF' > listdep.log
+  # rm ${depf}
+
+  while IFS= read -r fs
   do
-    if [ -f "$f" ]; then
-      echo $f >> sources_check.log
+    echo "$fs"
+    # check if dependency is already in the list
+    if grep -Fxq "$fs" "$dep"
+    then
+      echo "dep exist"
+    else
+      echo "dep does not exist yet => adding it"
+      # add dependency to list
+      echo "$fs" >> ${dep}
+      # check for corresponding source file
+      fssourc=$(echo ${fs} | sed 's/.h$/.cc/g' | sed 's/.hpp$/.cpp/g')
+      echo ${fssourc}
+      if [ -f "$fssourc" ]
+      then
+        echo "source file exists"
+        # list nested dependencies
+        if [ "$rec" -lt "$maxdep" ]
+        then
+          # increment recursion depth
+          recinc=$(($rec+1))
+          # call recursion
+          listDependencies ${rep} ${fssourc} ${dep} ${recinc}
+        else
+          echo "maximal recursion depth exceeded"
+        fi
+      else
+        echo "source file does not exist"
+      fi
     fi
-  done
-  cat sources_check.log | sed ':a;N;$!ba;s/\n/ /g' > deps-sources.log
-  echo "list of required sources ($(cat sources_check.log | wc -l))"
-  cat deps-sources.log
-  echo ""
+    echo ""
+  done < listdep.log
 
-  # remove all temporary files
-  rm ${dep} deps.log sources_raw.log sources_check.log
+  # cat listdep.log | while read fs
+  # do
+  #   echo $fs
+  #   # check if dependency is already in the list
+  #   inlist=$(cat listdep.log | grep ${fs} | wc -l)
+  #   echo ${inlist}
+  #   # check for any corresponding source files
+  #   # if [ -f ]
+  # done
+}
 
-  # copy required headers and sources
-  echo -e "copy required headers and sources"
-  mkdir temp/
-  cp --parents `cat deps-headers.log` temp/
-  cp --parents `cat deps-sources.log` temp/
-  mv temp${repo}cpp/src/* ./
-  rm -r temp
+#-----------------------------------------------------------------------------#
 
-  # remove dependencies
-  rm deps-headers.log deps-sources.log
+# call function to list dependencies (recursively)
+listDependencies ${repo} ${main} ${depf} 0
 
-  # show files
-  ls -lh
-
-else
-
-  echo -e "\nERROR: failed to generate dependency file\n"
-
-fi
+# # generate dependency file (and remove resulting object file)
+# echo -e "generate dependencies:\ng++ -c -MMD ${main} -I ./ -I ${repo}cpp/src/\n"
+# g++ -c -MMD ${main} -I ${repo}cpp/src/
+# rm $(echo ${main} | sed 's/.cc/.o/g')
+#
+# # derive name of dependency file
+# dep=$(echo ${main} | sed 's/.cc/.d/g')
+#
+# if [ -f "$dep" ]; then
+#
+#   # list dependencies
+#   cat ${dep} | sed 's/ /\n/g' | awk 'NF' | grep -v '\\' | grep '\/' > deps.log
+#
+#   # extract list of headers
+#   cat deps.log | sed ':a;N;$!ba;s/\n/ /g' > deps-headers.log
+#   echo "list of required headers ($(cat deps.log | wc -l))"
+#   cat deps-headers.log
+#   echo ""
+#
+#   # imply list of sources
+#   cat deps.log | sed 's/.h$/.cc/g' | sed 's/.hpp$/.cpp/g' > sources_raw.log
+#   cat sources_raw.log | while read f
+#   do
+#     if [ -f "$f" ]; then
+#       echo $f >> sources_check.log
+#     fi
+#   done
+#   cat sources_check.log | sed ':a;N;$!ba;s/\n/ /g' > deps-sources.log
+#   echo "list of required sources ($(cat sources_check.log | wc -l))"
+#   cat deps-sources.log
+#   echo ""
+#
+#   # remove all temporary files
+#   rm ${dep} deps.log
+#   rm sources_raw.log sources_check.log
+#
+#   # copy required headers and sources
+#   echo -e "copy required headers and sources"
+#   mkdir temp/
+#   cp --parents `cat deps-headers.log` temp/
+#   cp --parents `cat deps-sources.log` temp/
+#   mv temp${repo}cpp/src/* ./
+#   rm -r temp
+#
+#   # remove dependencies
+#   #rm deps-headers.log deps-sources.log
+#
+#   # show files
+#   ls -lh
+#
+# else
+#
+#   echo -e "\nERROR: failed to generate dependency file\n"
+#
+# fi
diff --git a/setup.py b/setup.py
index f72b96f..005883a 100644
--- a/setup.py
+++ b/setup.py
@@ -11,6 +11,7 @@ extensions = Extension(
     language='c++',
     extra_compile_args=['-std=c++11','-Wno-unused-variable'],
     extra_link_args=['-std=c++11'],
+    #extra_objects=["lib/parquet/libarrow.so.200.0.0"],
 )
 
 setup(