Use hard links to link sysroot files within ModuleCache.

http://reviews.llvm.org/D9587

llvm-svn: 236917

lldb/source/Host/windows/FileSystem.cpp

@@ -95,6 +95,15 @@ FileSystem::GetFileExists(const FileSpec &file_spec)
     return file_spec.Exists();
 }
 
+Error
+FileSystem::Hardlink(const char *linkname, const char *target)
+{
+    Error error;
+    if (!::CreateHardLink(linkname, target, nullptr))
+        error.SetError(::GetLastError(), lldb::eErrorTypeWin32);
+    return error;
+}
+
 Error
 FileSystem::Symlink(const char *linkname, const char *target)
 {