[PATCH] D65572: Fix static linking failure with --unwindlib=libunwind
Khem Raj via Phabricator via cfe-commits
cfe-commits at lists.llvm.org
Thu Aug 1 06:22:58 PDT 2019
raj.khem created this revision.
raj.khem added a reviewer: rengolin.
raj.khem added a project: clang.
Herald added subscribers: cfe-commits, jfb.
when trying to use llvm libunwind via clang driver option --unwindlib and using -static together, linking fails with missing symbols
libunwind/src/RWMutex.hpp:68: undefined reference to `pthread_rwlock_wrlock'
..
libunwind/src/AddressSpace.hpp:597: undefined reference to `dladdr'
There are missing symbols in linunwind.a which should be coming from libpthread and libdl
Repository:
rC Clang
https://reviews.llvm.org/D65572
Files:
clang/lib/Driver/ToolChains/CommonArgs.cpp
Index: clang/lib/Driver/ToolChains/CommonArgs.cpp
===================================================================
--- clang/lib/Driver/ToolChains/CommonArgs.cpp
+++ clang/lib/Driver/ToolChains/CommonArgs.cpp
@@ -1185,6 +1185,10 @@
}
case ToolChain::UNW_CompilerRT:
CmdArgs.push_back("-lunwind");
+ if (Args.hasArg(options::OPT_static)) {
+ CmdArgs.push_back("-lpthread");
+ CmdArgs.push_back("-ldl");
+ }
break;
}
-------------- next part --------------
A non-text attachment was scrubbed...
Name: D65572.212797.patch
Type: text/x-patch
Size: 455 bytes
Desc: not available
URL: <http://lists.llvm.org/pipermail/cfe-commits/attachments/20190801/f471da66/attachment.bin>
More information about the cfe-commits
mailing list