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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - Clang bootstrap should work with LLVM_ENABLE_LIBCXX"
href="http://llvm.org/bugs/show_bug.cgi?id=18569">18569</a>
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<th>Summary</th>
<td>Clang bootstrap should work with LLVM_ENABLE_LIBCXX
</td>
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<th>Product</th>
<td>clang
</td>
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<th>Version</th>
<td>unspecified
</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>
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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>-New Bugs
</td>
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
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<th>Reporter</th>
<td>samsonov@google.com
</td>
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<th>CC</th>
<td>chandlerc@gmail.com, eugeni.stepanov@gmail.com, hhinnant@apple.com, kcc@google.com, llvmbugs@cs.uiuc.edu, mclow.lists@gmail.com
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<th>Classification</th>
<td>Unclassified
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<p>
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<pre>Currently, the following process doesn't work:
(1) Build LLVM/Clang/libc++ using a host compiler (e.g. some version of gcc).
(2) Build Clang again with just-built Clang and -DLLVM_ENABLE_LIBCXX=ON.
I see a number of problems:
(1) Clang doesn't find libc++ if it's not installed in the system, but is
instead located in Clang build directory (or is a part of Clang installation).
See Chandler's comments in r199632 thread. tl;dr libc++ was always thought to
be a part of OS or system root, but not a part of compiler distribution. But we
still want to locate it somehow if it's built together with the compiler.
(2) Configuration problem.
$ cat cxxabi_test.cc
#include <cxxabi.h>
$ clang++ cxxabi_test.cc -c -o a.o
$ clang++ cxxabi_test.cc -c -o a.o -stdlib=libc++
cxxabi_test.cc:1:10: fatal error: 'cxxabi.h' file not found
As a result at configuration time we find cxxabi.h header, but we can't locate
it when we actually compile the project sources with -stdlib=libc++</pre>
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