[ECOS] Problem building RedBoot using Leon Processor template

[nyeung]

Hello,
I like to try and build Redboot/eCos for the Leon processor.
When I select from template Leon processor / package redboot.
I can build the default.   That gave me a libtarget.a in Lib folder.
But when I try to select "Build Redboot ROM ELF image"
I got a conflict msg.
 
CygBLD_BUILD_REDBOOT requires CYGSEM_HAL_VIRTUAL_VECTOR_SUPPORT.
 
can any one help pls.
 
Thanks
norman
 

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