<html>
<head>
<base href="https://bugs.llvm.org/">
</head>
<body><table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Failed Checking missing-syscalls for O32"
href="https://bugs.llvm.org/show_bug.cgi?id=38063">38063</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>Failed Checking missing-syscalls for O32
</td>
</tr>
<tr>
<th>Product</th>
<td>clang
</td>
</tr>
<tr>
<th>Version</th>
<td>trunk
</td>
</tr>
<tr>
<th>Hardware</th>
<td>Other
</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>-New Bugs
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>lesliezhai@llvm.org.cn
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
</tr></table>
<p>
<div>
<pre>Hi LLVM developers,
I am building Linux Kernel[1] with LLVM toolchain[2] for mips64el.
But it failed Checking missing-syscalls for O32:
error: ABI 'o32' is not supported on CPU 'mips64r2'
Kbuild:98: recipe for target 'missing-syscalls' failed
make[1]: *** [missing-syscalls] Error 1
GCC is able to work:
...
Checking missing-syscalls for O32
CHK include/generated/timeconst.h
CHK include/generated/bounds.h
CHK include/generated/asm-offsets.h
CALL scripts/checksyscalls.sh
CHK include/generated/bounds.h
CHK include/generated/timeconst.h
CHK include/generated/asm-offsets.h
...
So ugly workaround patch:
diff --git a/lib/Basic/Targets/Mips.cpp b/lib/Basic/Targets/Mips.cpp
index cbd5a01..59dd34b 100644
--- a/lib/Basic/Targets/Mips.cpp
+++ b/lib/Basic/Targets/Mips.cpp
@@ -207,8 +207,7 @@ bool MipsTargetInfo::validateTarget(DiagnosticsEngine
&Diags) const {
// FIXME: It's valid to use O32 on a 64-bit CPU but the backend can't handle
// this yet. It's better to fail here than on the backend assertion.
if (processorSupportsGPR64() && ABI == "o32") {
- Diags.Report(diag::err_target_unsupported_abi) << ABI << CPU;
- return false;
+ return true;
}
// 64-bit ABI's require 64-bit CPU's.
1. Linux Kernel 4.9 branch <a href="https://github.com/loongson-community/linux-stable">https://github.com/loongson-community/linux-stable</a>
2. Loongson clang version 7.0.0 (<a href="mailto:git@github.com">git@github.com</a>:llvm-mirror/clang.git
ef356db5c03a0f052c09ebd0a964b9eda3852847) (<a href="mailto:git@github.com">git@github.com</a>:llvm-mirror/llvm.git
ab9920d16bc0acaa2a458b49a43b3aaa9bcda8e6) (based on LLVM 7.0.0svn)
Target: mips64el-redhat-linux
Thread model: posix
InstalledDir: /opt/llvm-git/bin
Found candidate GCC installation: /usr/lib/gcc/mips64el-redhat-linux/4.9.3
Selected GCC installation: /usr/lib/gcc/mips64el-redhat-linux/4.9.3
Candidate multilib: .;
Selected multilib: .;
Regards,
Leslie Zhai</pre>
</div>
</p>
<hr>
<span>You are receiving this mail because:</span>
<ul>
<li>You are on the CC list for the bug.</li>
</ul>
</body>
</html>