about RTEMS toolchain target mips32 little endian

[Devin]

I am working on Mips32-based processors.little endian model. 
According to the document which RTEMS suggest,I has built toolchain
(mips-rtems4.10-gcc).but when I compile csb350 bsp by adding parameter "-EL"
&"-mips32"in csb350.bfg .
 Some *error*s occur .
error: 

//mips-rtems4.10/lib/crt0.o: compiled for a big endian system and target is
little endian 
/opt/rtems/lib/gcc/mips-rtems4.10/4.4.6/../../../../mips-rtems4.10/bin/ld:
/opt/rtems/lib/gcc/mips-rtems4.10/4.4.6/../../../../mips-rtems4.10/lib/crt0.o:
endianness incompatible with that of the selected emulation/

So, I want to build toolchain which can support  adding "-mips32"&"-EL"in
the same time.
Today , I find one file  named "t-rtems" in gcc source
"/gcc-4.4.6/gcc/config/mips/"

The following is the content of the "t-rtems" :
 
*# Custom multilibs for RTEMS

# default is mips1 EB hard-float     
MULTILIB_OPTIONS = mips1/mips3/mips32 EB/EL msoft-float
MULTILIB_DIRNAMES = mips1 mips3 mips32 eb el soft-float
MULTILIB_MATCHES = EL=mel EB=meb

MULTILIB_EXCEPTIONS =

# Big endian only
MULTILIB_EXCEPTIONS += EL*
MULTILIB_EXCEPTIONS += mips32/EL*

MULTILIB_EXCEPTIONS += EL*
MULTILIB_EXCEPTIONS += mips3/EL*

# Little endian only
MULTILIB_EXCEPTIONS += mips3
MULTILIB_EXCEPTIONS += mips3/msoft-float*

Now, I think I should chang the deault setting .  
How can I do to gcc make sure  the  default target will be  mips32 EL
soft-float ??

Thanks a lot !
Devin



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