how to use gcc compiler on derecho

[xiaoxiaokuishu]

Hi,all,

I am porting my model (CLM5 )from a gcc compiler platform to derecho, it works well with gcc compiler.
but derecho seems only has default intel compiler, as I did not find any gcc tag in config_compiler.xml
and config_machine.xml for derecho. Is there anyone can share how to use gcc compiler to run CLM5 on
derecho!

Thanks so much