1// Licensed to the Apache Software Foundation (ASF) under one
2// or more contributor license agreements. See the NOTICE file
3// distributed with this work for additional information
4// regarding copyright ownership. The ASF licenses this file
5// to you under the Apache License, Version 2.0 (the
6// "License"); you may not use this file except in compliance
7// with the License. You may obtain a copy of the License at
8//
9// http://www.apache.org/licenses/LICENSE-2.0
10//
11// Unless required by applicable law or agreed to in writing,
12// software distributed under the License is distributed on an
13// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
14// KIND, either express or implied. See the License for the
15// specific language governing permissions and limitations
16// under the License.
17
18#ifndef PARQUET_UTIL_VISIBILITY_H
19#define PARQUET_UTIL_VISIBILITY_H
20
21#if defined(_WIN32) || defined(__CYGWIN__)
22#ifdef _MSC_VER
23#pragma warning(push)
24// Disable warning for STL types usage in DLL interface
25// https://web.archive.org/web/20130317015847/http://connect.microsoft.com/VisualStudio/feedback/details/696593/vc-10-vs-2010-basic-string-exports
26#pragma warning(disable : 4275 4251)
27// Disable diamond inheritance warnings
28#pragma warning(disable : 4250)
29// Disable macro redefinition warnings
30#pragma warning(disable : 4005)
31// Disable extern before exported template warnings
32#pragma warning(disable : 4910)
33#endif
34#define PARQUET_EXPORT __declspec(dllexport)
35#define PARQUET_NO_EXPORT
36#else // Not Windows
37#ifndef PARQUET_EXPORT
38#define PARQUET_EXPORT __attribute__((visibility("default")))
39#endif
40#ifndef PARQUET_NO_EXPORT
41#define PARQUET_NO_EXPORT __attribute__((visibility("hidden")))
42#endif
43#endif // Non-Windows
44
45// gcc and clang disagree about how to handle template visibility when you have
46// explicit specializations https://llvm.org/bugs/show_bug.cgi?id=24815
47
48#if defined(__clang__)
49#define PARQUET_EXTERN_TEMPLATE extern template class PARQUET_EXPORT
50#else
51#define PARQUET_EXTERN_TEMPLATE extern template class
52#endif
53
54// This is a complicated topic, some reading on it:
55// http://www.codesynthesis.com/~boris/blog/2010/01/18/dll-export-cxx-templates/
56#if defined(_MSC_VER) || defined(__clang__)
57#define PARQUET_TEMPLATE_CLASS_EXPORT
58#define PARQUET_TEMPLATE_EXPORT PARQUET_EXPORT
59#else
60#define PARQUET_TEMPLATE_CLASS_EXPORT PARQUET_EXPORT
61#define PARQUET_TEMPLATE_EXPORT
62#endif
63
64#endif // PARQUET_UTIL_VISIBILITY_H
65