Index: ntopng-2.4/configure.seed
===================================================================
--- ntopng-2.4/configure.seed
+++ ntopng-2.4/configure.seed	2018-01-31 13:19:20.019874710 +0100
@@ -46,35 +46,7 @@
 PRO_GIT_RELEASE="@PRO_GIT_RELEASE@"
 PRO_GIT_DATE="@PRO_GIT_DATE@"
 
-AC_MSG_CHECKING(for nDPI)
-NDPI_HOME=./nDPI
-if test -d "$NDPI_HOME" ; then :
-   AC_MSG_RESULT(found in $NDPI_HOME)
-else
-   NDPI_HOME=../nDPI
-   if test -d "$NDPI_HOME"; then :
-      AC_MSG_RESULT(found in $NDPI_HOME)
-   else
-      NDPI_HOME=$HOME/nDPI
-      if test -d "$NDPI_HOME"; then :
-        AC_MSG_RESULT(found in $NDPI_HOME)
-      else
-        AC_MSG_RESULT(not found)
-        echo "Please do cd ..; git clone https://github.com/ntop/nDPI.git; cd nDPI; ./autogen.sh; make; cd ../ntopng"
-        echo " and try again"
-        exit
-      fi
-   fi
-fi
-
-NDPI_LIB=$NDPI_HOME/src/lib/.libs/libndpi.a
-AC_MSG_CHECKING(for $NDPI_LIB)
-if test -f "$NDPI_LIB" ; then :
-  AC_MSG_RESULT(found $NDPI_LIB)
-else
-  AC_MSG_RESULT(not found $NDPI_LIB: compiling)
-  cd $NDPI_HOME; ./autogen.sh; make; cd -
-fi
+PKG_CHECK_MODULES([NDPI], [libndpi])
 
 AC_MSG_CHECKING(for ntopng professional edition)
 if test -d "pro"; then :