diff --git a/setup_node.sh b/setup_node.sh
index 4178696..c7592d7 100755
--- a/setup_node.sh
+++ b/setup_node.sh
@@ -1,6 +1,6 @@
 #!/bin/bash
 
-check_dependency()
+check_command_dependency()
 {
     echo -n "checking $1... "
 
@@ -12,11 +12,26 @@ check_dependency()
     fi
 }
 
+check_library_dependency()
+{
+    echo -n "checking $1... "
+
+    if ldconfig -p | grep -q $1; then
+        echo "found"
+    else
+        echo "missing"
+        missing="$1 "
+    fi
+}
+
 # checking dependencies
-check_dependency git
-check_dependency cmake
-check_dependency g++
-check_dependency gcc
+check_command_dependency git
+check_command_dependency cmake
+check_command_dependency g++
+check_command_dependency gcc
+check_command_dependency m4
+check_library_dependency zlib
+check_library_dependency libedit
 
 
 if [ -z ${missing+x} ]; then