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| <h4 class="subsection">3.17.47 VMS Options</h4> |
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| <p>These ‘<samp><span class="samp">-m</span></samp>’ options are defined for the VMS implementations: |
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| <dl> |
| <dt><code>-mvms-return-codes</code><dd><a name="index-mvms_002dreturn_002dcodes-2294"></a>Return VMS condition codes from <code>main</code>. The default is to return POSIX-style |
| condition (e.g. error) codes. |
| |
| <br><dt><code>-mdebug-main=</code><var>prefix</var><dd><a name="index-mdebug_002dmain_003d_0040var_007bprefix_007d-2295"></a>Flag the first routine whose name starts with <var>prefix</var> as the main |
| routine for the debugger. |
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| <br><dt><code>-mmalloc64</code><dd><a name="index-mmalloc64-2296"></a>Default to 64-bit memory allocation routines. |
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| <br><dt><code>-mpointer-size=</code><var>size</var><dd><a name="index-g_t_002dmpointer_002dsize_003d_0040var_007bsize_007d-2297"></a>Set the default size of pointers. Possible options for <var>size</var> are |
| ‘<samp><span class="samp">32</span></samp>’ or ‘<samp><span class="samp">short</span></samp>’ for 32 bit pointers, ‘<samp><span class="samp">64</span></samp>’ or ‘<samp><span class="samp">long</span></samp>’ |
| for 64 bit pointers, and ‘<samp><span class="samp">no</span></samp>’ for supporting only 32 bit pointers. |
| The later option disables <code>pragma pointer_size</code>. |
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