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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - S390X and PPC64 architectures detection is wrong"
href="https://bugs.webkit.org/show_bug.cgi?id=156337">156337</a>
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<th>Summary</th>
<td>S390X and PPC64 architectures detection is wrong
</td>
</tr>
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<th>Classification</th>
<td>Unclassified
</td>
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<th>Product</th>
<td>WebKit
</td>
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<th>Version</th>
<td>WebKit Nightly Build
</td>
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<th>Hardware</th>
<td>Unspecified
</td>
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<th>OS</th>
<td>Unspecified
</td>
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>Normal
</td>
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<th>Priority</th>
<td>P2
</td>
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<th>Component</th>
<td>Web Template Framework
</td>
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<th>Assignee</th>
<td>webkit-unassigned@lists.webkit.org
</td>
</tr>
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<th>Reporter</th>
<td>tpopela@redhat.com
</td>
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<p>
<div>
<pre>After the <a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED FIXED - Fails to build in Linux / PowerPC due to different ucontext_t definition"
href="show_bug.cgi?id=156015">https://bugs.webkit.org/show_bug.cgi?id=156015</a> was committed it showed that the PPC64 detection is wrong as on the CPU(PPC) path was activated even for PPC64. The thing is that GCC defines __ppc__ even on PPC64 and not just on PPC(32). The same applies for S390X.
$ gcc -dM -E - < /dev/null | grep PPC
#define _ARCH_PPCGR 1
#define __PPC64__ 1 <---
#define _ARCH_PPCSQ 1
#define _ARCH_PPC 1
#define __PPC__ 1 <---
#define _ARCH_PPC64 1</pre>
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