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Next: <a rel="next" accesskey="n" href="Solaris-Pragmas.html#Solaris-Pragmas">Solaris Pragmas</a>,
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Previous: <a rel="previous" accesskey="p" href="RS_002f6000-and-PowerPC-Pragmas.html#RS_002f6000-and-PowerPC-Pragmas">RS/6000 and PowerPC Pragmas</a>,
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<h4 class="subsection">6.60.5 Darwin Pragmas</h4>
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<p>The following pragmas are available for all architectures running the
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Darwin operating system. These are useful for compatibility with other
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Mac OS compilers.
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<dl>
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<dt><code>mark </code><var>tokens</var><code>...</code><dd><a name="index-pragma_002c-mark-4169"></a>This pragma is accepted, but has no effect.
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<br><dt><code>options align=</code><var>alignment</var><dd><a name="index-pragma_002c-options-align-4170"></a>This pragma sets the alignment of fields in structures. The values of
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<var>alignment</var> may be <code>mac68k</code>, to emulate m68k alignment, or
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<code>power</code>, to emulate PowerPC alignment. Uses of this pragma nest
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properly; to restore the previous setting, use <code>reset</code> for the
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<var>alignment</var>.
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<br><dt><code>segment </code><var>tokens</var><code>...</code><dd><a name="index-pragma_002c-segment-4171"></a>This pragma is accepted, but has no effect.
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<br><dt><code>unused (</code><var>var</var><code> [, </code><var>var</var><code>]...)</code><dd><a name="index-pragma_002c-unused-4172"></a>This pragma declares variables to be possibly unused. GCC does not
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produce warnings for the listed variables. The effect is similar to
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that of the <code>unused</code> attribute, except that this pragma may appear
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anywhere within the variables' scopes.
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</dl>
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