diff --git a/lib/Support/ToolRunner.cpp b/lib/Support/ToolRunner.cpp
index 3dc98451de5..1584db4ed32 100644
--- a/lib/Support/ToolRunner.cpp
+++ b/lib/Support/ToolRunner.cpp
@@ -409,6 +409,7 @@ int GCC::MakeSharedObject(const std::string &InputFile, FileType fileType,
 #if defined(sparc) || defined(__sparc__) || defined(__sparcv9)
     "-G",                        // Compile a shared library, `-G' for Sparc
 #elif (defined(__POWERPC__) || defined(__ppc__)) && defined(__APPLE__)
+    "-single_module",            // link all source files into a single module
     "-dynamiclib",               // `-dynamiclib' for MacOS X/PowerPC
     "-fno-common",               // allow global vars w/o initializers to live
     "-undefined",                // in data segment, rather than generating
diff --git a/tools/bugpoint/ToolRunner.cpp b/tools/bugpoint/ToolRunner.cpp
index 3dc98451de5..1584db4ed32 100644
--- a/tools/bugpoint/ToolRunner.cpp
+++ b/tools/bugpoint/ToolRunner.cpp
@@ -409,6 +409,7 @@ int GCC::MakeSharedObject(const std::string &InputFile, FileType fileType,
 #if defined(sparc) || defined(__sparc__) || defined(__sparcv9)
     "-G",                        // Compile a shared library, `-G' for Sparc
 #elif (defined(__POWERPC__) || defined(__ppc__)) && defined(__APPLE__)
+    "-single_module",            // link all source files into a single module
     "-dynamiclib",               // `-dynamiclib' for MacOS X/PowerPC
     "-fno-common",               // allow global vars w/o initializers to live
     "-undefined",                // in data segment, rather than generating