hbase-native-client/src/core/hbase_macros.h

   1 /*
   2  * Licensed to the Apache Software Foundation (ASF) under one
   3  * or more contributor license agreements.  See the NOTICE file
   4  * distributed with this work for additional information
   5  * regarding copyright ownership.  The ASF licenses this file
   6  * to you under the Apache License, Version 2.0 (the
   7  * "License"); you may not use this file except in compliance
   8  * with the License.  You may obtain a copy of the License at
   9  *
  10  *     http://www.apache.org/licenses/LICENSE-2.0
  11  *
  12  * Unless required by applicable law or agreed to in writing, software
  13  * distributed under the License is distributed on an "AS IS" BASIS,
  14  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  15  * See the License for the specific language governing permissions and
  16  * limitations under the License.
  17  *
  18  */
  19
  20 #ifndef CORE_HBASE_MACROS_H_
  21 #define CORE_HBASE_MACROS_H_
  22
  23 #ifdef __cplusplus
  24 extern "C" {
  25 #endif
  26
  27 /**
  28  * The following code block define API as the tag for exported
  29  * functions. The library should be compiled with symbols visibility
  30  * set to hidden by default and only the exported functions should be
  31  * tagged as HBASE_API.
  32  *
  33  * When building the library on Windows, compile with compiler flag
  34  * "-D_LIBHBASE_IMPLEMENTATION_", whereas when linking application with
  35  * this library, this compiler flag should not be used.
  36  */
  37 #if defined _WIN32 || defined __CYGWIN__
  38   #ifdef _LIBHBASE_IMPLEMENTATION_
  39       #define API __declspec(dllexport)
  40   #else
  41     #ifdef _LIBHBASE_TEST_
  42       #define HBASE_API
  43     #else
  44       #define HBASE_API __declspec(dllimport)
  45     #endif
  46   #endif
  47 #else
  48   #if __GNUC__ >= 4
  49     #define HBASE_API __attribute__ ((visibility ("default")))
  50   #else
  51     #define HBASE_API
  52   #endif
  53 #endif
  54
  55 #ifdef __cplusplus
  56 }  // extern "C"
  57 #endif  // __cplusplus
  58
  59 #endif  // CORE_HBASE_MACROS_H_
  60