add --enable-64 configure flag to build 64 bit with suncc

git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@6294 d0543943-73ff-0310-b7d9-9358b9ac24b2

libs/codec/ilbc/configure.in

@@ -91,6 +91,15 @@ case "$host" in
                         IN_LINE=inline
                 ;;
 esac
+#  Enable 64 bit build
+AC_ARG_ENABLE(64,
+[AC_HELP_STRING([--enable-64],[build with 64 bit support])],[enable_64="$enable_64"],[enable_64="no"])
+
+if test "x${ax_cv_c_compiler_vendor}"  =  "xsun" ; then
+    if test "${enable_64}" = "yes"; then
+        new_AM_CFLAGS="$new_AM_CFLAGS -m64"
+    fi
+fi
 AC_SUBST(new_AM_CFLAGS)
 AC_SUBST(new_AM_LDFLAGS)
 AC_SUBST(SOLINK)