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<title>Solaris 2 Options - Using the GNU Compiler Collection (GCC)</title>
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<link rel="up" href="Submodel-Options.html#Submodel-Options" title="Submodel Options">
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<a name="Solaris-2-Options"></a>
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Next: <a rel="next" accesskey="n" href="SPARC-Options.html#SPARC-Options">SPARC Options</a>,
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Previous: <a rel="previous" accesskey="p" href="SH-Options.html#SH-Options">SH Options</a>,
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<h4 class="subsection">3.17.42 Solaris 2 Options</h4>
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<p><a name="index-Solaris-2-options-2510"></a>
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These ‘<samp><span class="samp">-m</span></samp>’ options are supported on Solaris 2:
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<dl>
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<dt><code>-mclear-hwcap</code><dd><a name="index-mclear_002dhwcap-2511"></a><samp><span class="option">-mclear-hwcap</span></samp> tells the compiler to remove the hardware
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capabilities generated by the Solaris assembler. This is only necessary
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when object files use ISA extensions not supported by the current
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machine, but check at runtime whether or not to use them.
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<br><dt><code>-mimpure-text</code><dd><a name="index-mimpure_002dtext-2512"></a><samp><span class="option">-mimpure-text</span></samp>, used in addition to <samp><span class="option">-shared</span></samp>, tells
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the compiler to not pass <samp><span class="option">-z text</span></samp> to the linker when linking a
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shared object. Using this option, you can link position-dependent
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code into a shared object.
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<p><samp><span class="option">-mimpure-text</span></samp> suppresses the “relocations remain against
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allocatable but non-writable sections” linker error message.
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However, the necessary relocations trigger copy-on-write, and the
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shared object is not actually shared across processes. Instead of
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using <samp><span class="option">-mimpure-text</span></samp>, you should compile all source code with
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<samp><span class="option">-fpic</span></samp> or <samp><span class="option">-fPIC</span></samp>.
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</dl>
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<p>These switches are supported in addition to the above on Solaris 2:
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<dl>
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<dt><code>-pthreads</code><dd><a name="index-pthreads-2513"></a>Add support for multithreading using the POSIX threads library. This
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option sets flags for both the preprocessor and linker. This option does
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not affect the thread safety of object code produced by the compiler or
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that of libraries supplied with it.
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<br><dt><code>-pthread</code><dd><a name="index-pthread-2514"></a>This is a synonym for <samp><span class="option">-pthreads</span></samp>.
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</dl>
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</body></html>
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