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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - Adding triple support for non-OSX Darwin OS"
href="http://llvm.org/bugs/show_bug.cgi?id=19776">19776</a>
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<th>Summary</th>
<td>Adding triple support for non-OSX Darwin OS
</td>
</tr>
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<th>Product</th>
<td>clang
</td>
</tr>
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<th>Version</th>
<td>trunk
</td>
</tr>
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<th>Hardware</th>
<td>Macintosh
</td>
</tr>
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<th>OS</th>
<td>All
</td>
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<th>Status</th>
<td>NEW
</td>
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<tr>
<th>Severity</th>
<td>enhancement
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
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<th>Component</th>
<td>Driver
</td>
</tr>
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
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<th>Reporter</th>
<td>drppublic@gmail.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvmbugs@cs.uiuc.edu
</td>
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<th>Classification</th>
<td>Unclassified
</td>
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<p>
<div>
<pre>Currently, non-OSX Darwin targets do not have a separate triple string. I.e:
cross-compiling llvm/clang with with following command:
CC='clang' CXX='clang++' cmake -G "Unix Makefiles" ../llvm/
-DCMAKE_CROSSCOMPILING=True \
-DCMAKE_INSTALL_PREFIX=/aDir
-DLLVM_DEFAULT_TARGET_TRIPLE=x86_64-aVendor-darwin13.1.0 \
-DLLVM_TARGETS_TO_BUILD=X86 -DLLVM_TARGET_ARCH=x86_64 \
-DCMAKE_CXX_FLAGS="-target x86_64-aVendor-darwin13.1.0"
Results in a clang driver that automatically inserts the triple argument:
-triple x86_64-aVendor-macosx10.9.0
where it should be:
-triple x86_64-aVendor-darwin13.1.0
(See <a href="http://lists.cs.uiuc.edu/pipermail/cfe-users/2014-May/000481.html">http://lists.cs.uiuc.edu/pipermail/cfe-users/2014-May/000481.html</a> for full
test description).
This issue could be resolved with the following steps:
1) Adding "DarwinOS" as an additional identifier in the
clang::driver::toolchains::Darwin DarwinPlatformKind enum in Toolchains.h in
llvm/tools/clang/lib/Driver/ (line 328)
2) Slightly modifying the logic in
clang::driver::toolchains::Darwin::ComputeEffectiveClangTriple()
(Toolchains.cpp, line 186) from:
Str += isTargetIOSBased() ? "ios" : "macosx";
To:
if (!isTargetIOSBased() && !isTargetMacOS())
Str += "darwin";
else
Str += isTargetIOSBased() ? "ios" : "macosx";
3) Altering the Darwin/OSX versioning logic to accommodate true Darwin Versions
for Triple::Darwin triples.</pre>
</div>
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