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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Building llvm 13 - Cross Compile - clang-ast-debug Exec format error"
href="https://bugs.llvm.org/show_bug.cgi?id=52091">52091</a>
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<th>Summary</th>
<td>Building llvm 13 - Cross Compile - clang-ast-debug Exec format error
</td>
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<th>Product</th>
<td>Build scripts
</td>
</tr>
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<th>Version</th>
<td>trunk
</td>
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<th>Hardware</th>
<td>PC
</td>
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<th>OS</th>
<td>Linux
</td>
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<th>Status</th>
<td>NEW
</td>
</tr>
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<th>Severity</th>
<td>normal
</td>
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<th>Priority</th>
<td>P
</td>
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<th>Component</th>
<td>cmake
</td>
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
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<th>Reporter</th>
<td>lancethepants@gmail.com
</td>
</tr>
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<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
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<p>
<div>
<pre>I'm cross-compiling clang, lld and ldb for an arm32 cpu. I previously
cross-compiled clang 12.0.1, and am now trying to now compile clang 13.
I first compile the requisite tools llvm-tblgen, clang-tblgen and lldb-tblgen
for the build system and then make sure to pass those to the cmake invocations
LLVM_TABLEGEN, CLANG_TABLEGEN LLDB_TABLEGEN so it knows where to find them when
needed in cross compilation.
With llvm 13 I'm now getting the error "clang-ast-dump: Exec format error". It
is attempting to run the cross-compiled 'clang-ast-dump' which of course won't
run on the build system. I built the host version of 'clang-ast-dump' but I
can't see any cmake variable to tell it the location of the build system's
'clang-ast-dump'. I attempted putting it ahead in the PATH but it doesn't
automatically pick it up that way.
Am I looking over a variable to pass this to cmake, or is there something I can
disable so it does not require 'clang-ast-dump'? I just want the c/c++
compiler, lld and ldb.
thanks,
Lance Fredrickson</pre>
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