https://bugs.llvm.org/show_bug.cgi?id=38063
Bug ID: 38063
Summary: Failed Checking missing-syscalls for O32
Product: clang
Version: trunk
Hardware: Other
OS: Linux
Status: NEW
Severity: normal
Priority: P
Component: -New Bugs
Assignee: unassignedclangb...@nondot.org
Reporter: lesliez...@llvm.org.cn
CC: llvm-bugs@lists.llvm.org
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 https://github.com/loongson-community/linux-stable
2. Loongson clang version 7.0.0 (g...@github.com:llvm-mirror/clang.git
ef356db5c03a0f052c09ebd0a964b9eda3852847) (g...@github.com: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
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