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<base href="https://llvm.org/bugs/" />
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<body><table border="1" cellspacing="0" cellpadding="8">
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - Cannot build 3.9 on Ubuntu precise"
href="https://llvm.org/bugs/show_bug.cgi?id=28841">28841</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>Cannot build 3.9 on Ubuntu precise
</td>
</tr>
<tr>
<th>Product</th>
<td>Build scripts
</td>
</tr>
<tr>
<th>Version</th>
<td>trunk
</td>
</tr>
<tr>
<th>Hardware</th>
<td>PC
</td>
</tr>
<tr>
<th>OS</th>
<td>Linux
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
<tr>
<th>Component</th>
<td>cmake
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>sylvestre@debian.org
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
</tr>
<tr>
<th>Blocks</th>
<td>28600
</td>
</tr>
<tr>
<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>On an Ubuntu precise (still supported), using the 4.9 backport (
<a href="https://launchpad.net/~ubuntu-toolchain-r/+archive/ubuntu/test">https://launchpad.net/~ubuntu-toolchain-r/+archive/ubuntu/test</a> )
The build of llvm 3.9 is failing with:
objcopy: unrecognized option '--extract-dwo'
More:
-- Check for working CXX compiler: /usr/bin/g++-4.9
-- Check for working CXX compiler: /usr/bin/g++-4.9 -- broken
CMake Error at /tmp/cmake/share/cmake-3.4/Modules/CMakeTestCXXCompiler.cmake:54
(message):
The C++ compiler "/usr/bin/g++-4.9" is not able to compile a simple test
program.
It fails with the following output:
Change Dir:
/tmp/buildd/llvm-toolchain-3.9-3.9~svn277639/build-llvm/CMakeFiles/CMakeTmp
Run Build Command:"/usr/bin/make" "cmTC_bd08e/fast"
make[2]: Entering directory
`/tmp/buildd/llvm-toolchain-3.9-3.9~svn277639/build-llvm/CMakeFiles/CMakeTmp'
/usr/bin/make -f CMakeFiles/cmTC_bd08e.dir/build.make
CMakeFiles/cmTC_bd08e.dir/build
make[3]: Entering directory
`/tmp/buildd/llvm-toolchain-3.9-3.9~svn277639/build-llvm/CMakeFiles/CMakeTmp'
Building CXX object CMakeFiles/cmTC_bd08e.dir/testCXXCompiler.cxx.o
/usr/bin/g++-4.9 -std=c++0x -gsplit-dwarf -o
CMakeFiles/cmTC_bd08e.dir/testCXXCompiler.cxx.o -c
"/tmp/buildd/llvm-toolchain-3.9-3.9~svn277639/build-llvm/CMakeFiles/CMakeTmp/testCXXCompiler.cxx"
objcopy: unrecognized option '--extract-dwo'
Usage: objcopy [option(s)] in-file [out-file]</pre>
</div>
</p>
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