From: Rainer Orth <ro@gcc.gnu.org>
Date: Tue, 15 May 2018 11:36:00 +0000 (+0000)
Subject: [Solaris] Only define _REENTRANT if -pthread
X-Git-Tag: llvmorg-7.0.0-rc1~6008
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=877d15b396494fae90a7808939aab7fd5ceebfb1;p=platform%2Fupstream%2Fllvm.git

[Solaris] Only define _REENTRANT if -pthread

When looking at lib/Basic/Targets/OSTargets.h, I noticed that _REENTRANT is defined
unconditionally on Solaris, unlike all other targets and what either Studio cc (only define
it with -mt) or gcc (only define it with -pthread) do.

This patch follows that lead.

Differential Revision: https://reviews.llvm.org/D41241

llvm-svn: 332343
---

diff --git a/clang/lib/Basic/Targets/OSTargets.h b/clang/lib/Basic/Targets/OSTargets.h
index a669a27..18239a2 100644
--- a/clang/lib/Basic/Targets/OSTargets.h
+++ b/clang/lib/Basic/Targets/OSTargets.h
@@ -551,7 +551,8 @@ protected:
     Builder.defineMacro("_LARGEFILE_SOURCE");
     Builder.defineMacro("_LARGEFILE64_SOURCE");
     Builder.defineMacro("__EXTENSIONS__");
-    Builder.defineMacro("_REENTRANT");
+    if (Opts.POSIXThreads)
+      Builder.defineMacro("_REENTRANT");
     if (this->HasFloat128)
       Builder.defineMacro("__FLOAT128__");
   }