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<h5 class="subsubsection">9.27.9.4 Linking different FP ABI variants</h5>

<p>Modules using the default FP ABI (no floating-point) can be linked with
any other (singular) FP ABI variant.

   <p>Special compatibility support exists for O32 with the four
double-precision FP ABI variants.  The &lsquo;<samp><span class="samp">-mfpxx</span></samp>&rsquo; FP ABI is specifically
designed to be compatible with the standard double-precision ABI and the
&lsquo;<samp><span class="samp">-mfp64</span></samp>&rsquo; FP ABIs.  This makes it desirable for O32 modules to be
built as &lsquo;<samp><span class="samp">-mfpxx</span></samp>&rsquo; 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
&lsquo;<samp><span class="samp">-mfp64</span></samp>&rsquo; ABI with &lsquo;<samp><span class="samp">-modd-spreg</span></samp>&rsquo;.

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