--- a/configure.in
+++ b/configure.in
@@ -30,7 +30,7 @@
 AM_PROG_CC_STDC
 AC_HEADER_STDC
 dnl localization tools
-ifdef([IT_PROG_INTLTOOL],[IT_PROG_INTLTOOL],[AC_PROG_INTLTOOL])
+dnl ifdef([IT_PROG_INTLTOOL],[IT_PROG_INTLTOOL],[AC_PROG_INTLTOOL])
 dnl Initialize libtool
 AC_PROG_LIBTOOL
 AM_PROG_LIBTOOL
@@ -62,7 +62,7 @@
   gnome_ui=false
 fi
 
-CFLAGS="$CFLAGS -I\$(prefix)/include"
+dnl CFLAGS="$CFLAGS -I\$(prefix)/include"
 
 if test "$gnome_ui" = "true" ; then
 
--- a/mediastreamer2/configure.ac
+++ b/mediastreamer2/configure.ac
@@ -47,8 +47,8 @@
 [wall_werror=yes]
 )
 
-CFLAGS="-DORTP_INET6 $CFLAGS -I\$(prefix)/include"
-LIBS="$LIBS -L\$(prefix)/lib"
+dnl CFLAGS="-DORTP_INET6 $CFLAGS -I\$(prefix)/include"
+dnl LIBS="$LIBS -L\$(prefix)/lib"
 
 dnl enable ipv6 support
 AC_ARG_ENABLE(ipv6,