Fix driver warning about -pthread on Android.

-pthread is no-op on Android. Suppress the unused argument warning.

llvm-svn: 210253

diff --git a/clang/lib/Driver/Tools.cpp b/clang/lib/Driver/Tools.cpp
index 7817f82..37df7ee 100644 (file)
--- a/clang/lib/Driver/Tools.cpp
+++ b/clang/lib/Driver/Tools.cpp
@@ -7189,9 +7189,9 @@ void gnutools::Link::ConstructJob(Compilation &C, const JobAction &JA,
       }
       AddRunTimeLibs(ToolChain, D, CmdArgs, Args);
 
-      if (!isAndroid &&
-          (Args.hasArg(options::OPT_pthread) ||
-           Args.hasArg(options::OPT_pthreads) || UsedOpenMPLib != LibUnknown))
+      if ((Args.hasArg(options::OPT_pthread) ||
+           Args.hasArg(options::OPT_pthreads) || UsedOpenMPLib != LibUnknown) &&
+          !isAndroid)
         CmdArgs.push_back("-lpthread");
 
       CmdArgs.push_back("-lc");

diff --git a/clang/test/Driver/linux-ld.c b/clang/test/Driver/linux-ld.c
index 019e7e9..c4a2e83 100644 (file)
--- a/clang/test/Driver/linux-ld.c
+++ b/clang/test/Driver/linux-ld.c
@@ -895,6 +895,12 @@
 // RUN:   | FileCheck --check-prefix=CHECK-ANDROID-PTHREAD %s
 // CHECK-ANDROID-PTHREAD-NOT: -lpthread
 //
+// RUN: %clang -no-canonical-prefixes %t.o -### -o %t 2>&1 \
+// RUN:     --target=arm-linux-androideabi -pthread \
+// RUN:     --sysroot=%S/Inputs/basic_android_tree/sysroot \
+// RUN:   | FileCheck --check-prefix=CHECK-ANDROID-PTHREAD-LINK %s
+// CHECK-ANDROID-PTHREAD-LINK-NOT: argument unused during compilation: '-pthread'
+//
 // Check linker invocation on Debian 6 MIPS 32/64-bit.
 // RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
 // RUN:     --target=mipsel-linux-gnu \