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 ARROW_UTIL_VISIBILITY_H |
19 | #define ARROW_UTIL_VISIBILITY_H |
20 | |
21 | #if defined(_WIN32) || defined(__CYGWIN__) |
22 | #if defined(_MSC_VER) |
23 | #pragma warning(disable : 4251) |
24 | #else |
25 | #pragma GCC diagnostic ignored "-Wattributes" |
26 | #endif |
27 | |
28 | #ifdef ARROW_STATIC |
29 | #define ARROW_EXPORT |
30 | #elif defined(ARROW_EXPORTING) |
31 | #define ARROW_EXPORT __declspec(dllexport) |
32 | #else |
33 | #define ARROW_EXPORT __declspec(dllimport) |
34 | #endif |
35 | |
36 | #define ARROW_NO_EXPORT |
37 | #else // Not Windows |
38 | #ifndef ARROW_EXPORT |
39 | #define ARROW_EXPORT __attribute__((visibility("default"))) |
40 | #endif |
41 | #ifndef ARROW_NO_EXPORT |
42 | #define ARROW_NO_EXPORT __attribute__((visibility("hidden"))) |
43 | #endif |
44 | #endif // Non-Windows |
45 | |
46 | // This is a complicated topic, some reading on it: |
47 | // http://www.codesynthesis.com/~boris/blog/2010/01/18/dll-export-cxx-templates/ |
48 | #if defined(_MSC_VER) || defined(__clang__) |
49 | #define ARROW_TEMPLATE_CLASS_EXPORT |
50 | #define ARROW_TEMPLATE_EXPORT ARROW_EXPORT |
51 | #else |
52 | #define ARROW_TEMPLATE_CLASS_EXPORT ARROW_EXPORT |
53 | #define ARROW_TEMPLATE_EXPORT |
54 | #endif |
55 | |
56 | #endif // ARROW_UTIL_VISIBILITY_H |
57 | |