Dummy implementation of the pthread library.
This is needed since libstdc++ uses pthread_once().

llvm-svn: 10360
diff --git a/llvm/runtime/GCCLibraries/libpthread/Makefile b/llvm/runtime/GCCLibraries/libpthread/Makefile
new file mode 100644
index 0000000..b3de428
--- /dev/null
+++ b/llvm/runtime/GCCLibraries/libpthread/Makefile
@@ -0,0 +1,14 @@
+##===- runtime/GCCLibraries/libpthread/Makefile ------------*- Makefile -*-===##
+# 
+#                     The LLVM Compiler Infrastructure
+#
+# This file was developed by the LLVM research group and is distributed under
+# the University of Illinois Open Source License. See LICENSE.TXT for details.
+# 
+##===----------------------------------------------------------------------===##
+LEVEL = ../../..
+BYTECODE_LIBRARY=1
+DONT_BUILD_RELINKED=1
+LIBRARYNAME=pthread
+
+include $(LEVEL)/Makefile.common