add --disbale-cpp configure argument to disable the c++ build for the core

git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@15717 d0543943-73ff-0310-b7d9-9358b9ac24b2

configure.in

@@ -270,6 +270,11 @@ if test "${enable_debug}" = "yes"; then
 
 fi
 
+AC_ARG_ENABLE(cpp,
+[AC_HELP_STRING([--disable-cpp],[build without cpp code])],[enable_cpp="$enableval"],[enable_cpp="yes"])
+
+AM_CONDITIONAL([ENABLE_CPP],[test "${enable_cpp}" = "yes"])
+
 AC_ARG_ENABLE(zrtp,
 	[AS_HELP_STRING([--enable-zrtp], [Compile with zrtp Support])],,[enable_zrtp="no"])
 if test "x$enable_zrtp" = "xyes" ; then