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<title>H8/300 Options - Using the GNU Compiler Collection (GCC)</title>
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<a name="H8%2f300-Options"></a>
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<a name="H8_002f300-Options"></a>
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Next: <a rel="next" accesskey="n" href="HPPA-Options.html#HPPA-Options">HPPA Options</a>,
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Previous: <a rel="previous" accesskey="p" href="GNU_002fLinux-Options.html#GNU_002fLinux-Options">GNU/Linux Options</a>,
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Up: <a rel="up" accesskey="u" href="Submodel-Options.html#Submodel-Options">Submodel Options</a>
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<h4 class="subsection">3.17.15 H8/300 Options</h4>
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<p>These ‘<samp><span class="samp">-m</span></samp>’ options are defined for the H8/300 implementations:
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<dl>
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<dt><code>-mrelax</code><dd><a name="index-mrelax-1690"></a>Shorten some address references at link time, when possible; uses the
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linker option <samp><span class="option">-relax</span></samp>. See <a href="../ld/H8_002f300.html#H8_002f300"><code>ld</code> and the H8/300</a>, for a fuller description.
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<br><dt><code>-mh</code><dd><a name="index-mh-1691"></a>Generate code for the H8/300H.
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<br><dt><code>-ms</code><dd><a name="index-ms-1692"></a>Generate code for the H8S.
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<br><dt><code>-mn</code><dd><a name="index-mn-1693"></a>Generate code for the H8S and H8/300H in the normal mode. This switch
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must be used either with <samp><span class="option">-mh</span></samp> or <samp><span class="option">-ms</span></samp>.
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<br><dt><code>-ms2600</code><dd><a name="index-ms2600-1694"></a>Generate code for the H8S/2600. This switch must be used with <samp><span class="option">-ms</span></samp>.
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<br><dt><code>-mexr</code><dd><a name="index-mexr-1695"></a>Extended registers are stored on stack before execution of function
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with monitor attribute. Default option is <samp><span class="option">-mexr</span></samp>.
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This option is valid only for H8S targets.
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<br><dt><code>-mno-exr</code><dd><a name="index-mno_002dexr-1696"></a>Extended registers are not stored on stack before execution of function
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with monitor attribute. Default option is <samp><span class="option">-mno-exr</span></samp>.
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This option is valid only for H8S targets.
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<br><dt><code>-mint32</code><dd><a name="index-mint32-1697"></a>Make <code>int</code> data 32 bits by default.
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<br><dt><code>-malign-300</code><dd><a name="index-malign_002d300-1698"></a>On the H8/300H and H8S, use the same alignment rules as for the H8/300.
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The default for the H8/300H and H8S is to align longs and floats on
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4-byte boundaries.
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<samp><span class="option">-malign-300</span></samp> causes them to be aligned on 2-byte boundaries.
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This option has no effect on the H8/300.
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</dl>
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