[arm-gcc] 'packed' attribute ignored by arm-none-eabi

["Fisher ZHU" <fisher.zhu@xxxxxxxxx>]

Hello All,

I define a structure with __attribute__((packed)), but there is a
warning: 'packed' attribute ignored when the file is compiled with
arm-none-eabi tool chain 2008q1 windows version used in cygwin.

I read the gcc compile reference manual, but found no solution.

Could you expert in codesourcery tell me the reason for this warning?

Thanks.