llvm dev - May 2015 - [LLVMdev] How to set default target flags?

Hello,

I've built LLVM natively on a fpu-less (soft-float) mips32 target, and
built mesa to use it.
However llvm apparently cannot determine what machine it's running on and
builds
code for a generic mips target with fpu.

Is there a way to have llc/llvm always use "-march=mipsle -mcpu=mips32
-mattr=+soft-float" as a default command line, something similar to
gcc's "--with-arch=mips32 --with-float=soft" configure switches?

Thanks!
       Manuel Lauss