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