as: MIPS FP ABI Compatibility

1 
1 9.27.9.4 Linking different FP ABI variants
1 ..........................................
1 
1 Modules using the default FP ABI (no floating-point) can be linked with
1 any other (singular) FP ABI variant.
1 
1    Special compatibility support exists for O32 with the four
1 double-precision FP ABI variants.  The '-mfpxx' FP ABI is specifically
1 designed to be compatible with the standard double-precision ABI and the
1 '-mfp64' FP ABIs.  This makes it desirable for O32 modules to be built
1 as '-mfpxx' to ensure the maximum compatibility with other modules
1 produced for more specific needs.  The only FP ABIs which cannot be
1 linked together are the standard double-precision ABI and the full
1 '-mfp64' ABI with '-modd-spreg'.
1