From: Fedor Sergeev <fedor.sergeev@azul.com>
Date: Tue, 6 Feb 2018 13:21:12 +0000 (+0000)
Subject: [Solaris] Silence -pthread warning on Solaris
X-Git-Tag: llvmorg-7.0.0-rc1~13580
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=33c86f87400c6517418a93068e507547b7582744;p=platform%2Fupstream%2Fllvm.git

[Solaris] Silence -pthread warning on Solaris

Summary:
During make check-all on Solaris, I see several instances of this warning:

clang-6.0: warning: argument unused during compilation: '-pthread' [-Wunused-command-line-argument]

Since Solaris 10, libpthread has been folded into libc, so there's nothing to do.  gcc
just ignores -pthread here.  Darwin claims the option to silence the warning, and
this patch follows that lead.

Reviewers: rsmith, fedor.sergeev

Reviewed By: fedor.sergeev

Subscribers: cfe-commits, fedor.sergeev

Differential Revision: https://reviews.llvm.org/D41242

llvm-svn: 324344
---

diff --git a/clang/lib/Driver/ToolChains/Solaris.cpp b/clang/lib/Driver/ToolChains/Solaris.cpp
index 3ed2865..b48edbb 100644
--- a/clang/lib/Driver/ToolChains/Solaris.cpp
+++ b/clang/lib/Driver/ToolChains/Solaris.cpp
@@ -71,6 +71,11 @@ void solaris::Linker::ConstructJob(Compilation &C, const JobAction &JA,
       CmdArgs.push_back(
           Args.MakeArgString(getToolChain().GetFilePath("ld.so.1")));
     }
+
+    // libpthread has been folded into libc since Solaris 10, no need to do
+    // anything for pthreads. Claim argument to avoid warning.
+    Args.ClaimAllArgs(options::OPT_pthread);
+    Args.ClaimAllArgs(options::OPT_pthreads);
   }
 
   if (Output.isFilename()) {