Driver/Darwin: When using the simplified Clang toolchain, make sure to also pass

the arch specific gcc lib path.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@111839 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Driver/ToolChains.cpp b/lib/Driver/ToolChains.cpp
index 3d3c7cc0ff1e3fb0e34b153bd7c86e9c15b41a1b..f1e0d4dfc786cbd35e837b441ab7151df2196d7c 100644 (file)
--- a/lib/Driver/ToolChains.cpp
+++ b/lib/Driver/ToolChains.cpp
@@ -263,7 +263,7 @@ void DarwinGCC::AddLinkSearchPathArgs(const ArgList &Args,
     CmdArgs.push_back(Args.MakeArgString("-L/usr/lib/gcc/" + ToolChainDir +
                                          "/x86_64"));
   }
-  
+
   CmdArgs.push_back(Args.MakeArgString("-L/usr/lib/" + ToolChainDir));
 
   Tmp = getDriver().Dir + "/../lib/gcc/" + ToolChainDir;
@@ -369,6 +369,32 @@ void DarwinClang::AddLinkSearchPathArgs(const ArgList &Args,
     break;
   }
   P.appendComponent("4.2.1");
+
+  // Determine the arch specific GCC subdirectory.
+  const char *ArchSpecificDir = 0;
+  switch (getTriple().getArch()) {
+  default:
+    break;
+  case llvm::Triple::arm:
+  case llvm::Triple::thumb:
+    // FIXME: Get the right subdirectory for ARM.
+    break;
+  case llvm::Triple::ppc64:
+    ArchSpecificDir = "ppc64";
+    break;
+  case llvm::Triple::x86_64:
+    ArchSpecificDir = "x86_64";
+    break;
+  }
+
+  if (ArchSpecificDir) {
+    P.appendComponent(ArchSpecificDir);
+    llvm::errs() << P.str() << "\n";
+    if (P.exists())
+      CmdArgs.push_back(Args.MakeArgString("-L" + P.str()));
+    P.eraseComponent();
+  }
+
   if (P.exists())
     CmdArgs.push_back(Args.MakeArgString("-L" + P.str()));
 }