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<base href="https://llvm.org/bugs/" />
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW " title="NEW --- - Clang is passing wrong library paths to the linker when cross compiling for MinGW-w64 on Linux" href="https://urldefense.proofpoint.com/v2/url?u=https-3A__llvm.org_bugs_show-5Fbug.cgi-3Fid-3D24166&d=AwMBaQ&c=8hUWFZcy2Z-Za5rBPlktOQ&r=pF93YEPyB-J_PERP4DUZOJDzFVX5ZQ57vQk33wu0vio&m=z4eI6Vrv6gcKPtQNxPMwbCZ_6Hv75qL3TVRi0uQsRQo&s=qdjKiJPsN3Tpj8IlzMks6z5V4fJcZ8nokWrT-rISDRg&e=">24166</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>Clang is passing wrong library paths to the linker when cross compiling for MinGW-w64 on Linux
</td>
</tr>
<tr>
<th>Product</th>
<td>clang
</td>
</tr>
<tr>
<th>Version</th>
<td>3.7
</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>release blocker
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
<tr>
<th>Component</th>
<td>-New Bugs
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>t.poechtrager@gmail.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvmbugs@cs.uiuc.edu
</td>
</tr>
<tr>
<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>Trying to link a simple C++ program with Clang 3.7 on Linux:
$ cat test.cpp
#include <iostream>
int main() {
std::cout << "Hello World" << std::endl;
}
$ /opt/compiler/llvm-3.7/bin/clang++ -target i686-w64-mingw32 -nostdinc
-fno-exceptions -isystem
/opt/compiler/llvm-trunk/bin/../lib/clang/3.7.0/include -isystem
/usr/i686-w64-mingw32/include -isystem /usr/i686-w64-mingw32/include/c++/5.1.0
-isystem /usr/i686-w64-mingw32/include/c++/5.1.0/backward -isystem
/usr/i686-w64-mingw32/include/c++/5.1.0/i686-w64-mingw32 -isysroot
/usr/i686-w64-mingw32 test.cpp
Results in:
/tmp/test-d403b7.o:(.text+0xc): undefined reference to
`std::ios_base::Init::Init()'
/tmp/test-d403b7.o:(.text+0x39): undefined reference to
`std::ios_base::Init::~Init()'
/tmp/test-d403b7.o:(.text+0x4d): undefined reference to `std::cout'
/tmp/test-d403b7.o:(.text+0x5f): undefined reference to
`std::basic_ostream<char, std::char_traits<char> >& std::operator<<
<std::char_traits<char> >(std::basic_ostream<char, std::char_traits<char> >&,
char const*)'
/tmp/test-d403b7.o:(.text+0x67): undefined reference to
`std::basic_ostream<char, std::char_traits<char> >& std::endl<char,
std::char_traits<char> >(std::basic_ostream<char, std::char_traits<char> >&)'
/tmp/test-d403b7.o:(.text+0x6e): undefined reference to
`std::ostream::operator<<(std::ostream& (*)(std::ostream&))'
clang-3.7: error: linker command failed with exit code 1 (use -v to see
invocation)
Examining the linker command shows '-L/usr/lib' is passed to the linker:
End of search list.
"/usr/bin/i686-w64-mingw32-ld" -m i386pe -Bdynamic -o a.exe
/usr/i686-w64-mingw32/lib/crt2.o
/usr/lib64/gcc/i686-w64-mingw32/5.1.0/crtbegin.o
-L/usr/lib64/gcc/i686-w64-mingw32/5.1.0 --->> -L/usr/lib <<---
-L/usr/i686-w64-mingw32/lib -L/usr/i686-w64-mingw32/sys-root/mingw/lib
/tmp/test-102ff8.o -lstdc++ -lmingw32 -lgcc_s -lgcc -lmoldname -lmingwex
-lmsvcrt -ladvapi32 -lshell32 -luser32 -lkernel32 -lmingw32 -lgcc_s -lgcc
-lmoldname -lmingwex -lmsvcrt /usr/lib64/gcc/i686-w64-mingw32/5.1.0/crtend.o
Debug output from the linker:
[...]
attempt to open /usr/lib64/gcc/i686-w64-mingw32/5.1.0/libstdc++.dll.a failed
attempt to open /usr/lib64/gcc/i686-w64-mingw32/5.1.0/stdc++.dll.a failed
attempt to open /usr/lib64/gcc/i686-w64-mingw32/5.1.0/libstdc++.a failed
attempt to open /usr/lib64/gcc/i686-w64-mingw32/5.1.0/stdc++.lib failed
attempt to open /usr/lib64/gcc/i686-w64-mingw32/5.1.0/libstdc++.dll failed
attempt to open /usr/lib64/gcc/i686-w64-mingw32/5.1.0/stdc++.dll failed
attempt to open /usr/lib64/gcc/i686-w64-mingw32/5.1.0/libstdc++.a failed
attempt to open /usr/lib/libstdc++.dll.a failed
attempt to open /usr/lib/stdc++.dll.a failed
attempt to open /usr/lib/libstdc++.a succeeded <----
I also tried to add '-isysroot /usr/i686-w64-mingw32', but it's no help either.</pre>
</div>
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