Fix issue 19: Windows build fails: undeclared identifier 'close'

https://code.google.com/p/cld2/issues/detail?id=19



git-svn-id: https://cld2.googlecode.com/svn/trunk@166 b252ecd4-b096-bf77-eb8e-91563289f87e

internal/cld2_dynamic_compat.h

@@ -0,0 +1,37 @@
+// Copyright 2014 Google Inc. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#ifndef CLD2_INTERNAL_CLD2_DYNAMIC_COMPAT_H_
+#define CLD2_INTERNAL_CLD2_DYNAMIC_COMPAT_H_
+
+// open(), close(), mmap() and munmap() are not available in vanilla win32.
+// This header provides compatibility for different operating systems using
+// standard preprocessor definitions.
+// Note that _WIN32 is also defined on 64-bit platforms :)
+//
+// For more information see https://code.google.com/p/cld2/issues/detail?id=19
+
+#ifdef _WIN32
+  #include <io.h>
+  #define OPEN _open
+  #define CLOSE _close
+#else // E.g., POSIX. We don't try to support Mac versions prior to OSX.
+  #include <sys/mman.h>
+  #include <fcntl.h>
+  #include <unistd.h>
+  #define OPEN open
+  #define CLOSE close
+#endif
+
+#endif  // CLD2_INTERNAL_CLD2_DYNAMIC_COMPAT_H_