https://github.com/xingxue-ibm created https://github.com/llvm/llvm-project/pull/184629
The compiler uses TLS for thread‑private data, which results in references to symbols such as `__tls_get_addr` in `libpthreads`. Therefore, this PR adds `libpthreads` to the link command when `-fopenmp` is specified. >From 9054917fc46ac60dfafc7472118d30e535d1b07f Mon Sep 17 00:00:00 2001 From: Xing Xue <[email protected]> Date: Wed, 4 Mar 2026 07:56:48 -0500 Subject: [PATCH] Add libpthreads for -fopenmp. --- clang/lib/Driver/ToolChains/AIX.cpp | 2 ++ 1 file changed, 2 insertions(+) diff --git a/clang/lib/Driver/ToolChains/AIX.cpp b/clang/lib/Driver/ToolChains/AIX.cpp index 2078ad57aee18..e7f4792ac5bba 100644 --- a/clang/lib/Driver/ToolChains/AIX.cpp +++ b/clang/lib/Driver/ToolChains/AIX.cpp @@ -310,6 +310,8 @@ void aix::Linker::ConstructJob(Compilation &C, const JobAction &JA, // Already diagnosed. break; } + // libpthreads is required for -fopenmp. + CmdArgs.push_back("-lpthreads"); } // Support POSIX threads if "-pthreads" or "-pthread" is present. _______________________________________________ cfe-commits mailing list [email protected] https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
