Hi, this is more of a GCC usage problem. Forwarding to gcc-help list. Thanks, bin ---------- Forwarded message ---------- From: Xiaohong Wang A <xiaohong.a.wang@xxxxxxxxxxxx> Date: Fri, May 25, 2018 at 7:51 AM Subject: about update gcc To: "gcc@xxxxxxxxxxx" <gcc@xxxxxxxxxxx> Hi: My wind river kernel version is 4.1 and the gcc version is 5.2.0 in it.how can I update the gcc tool to 6.0 or upper version?