1 /* Licensed to the Apache Software Foundation (ASF) under one or more 2 * contributor license agreements. See the NOTICE file distributed with 3 * this work for additional information regarding copyright ownership. 4 * The ASF licenses this file to You under the Apache License, Version 2.0 5 * (the "License"); you may not use this file except in compliance with 6 * the License. You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #ifndef APR_VERSION_H 18 #define APR_VERSION_H 19 20 /** 21 * @file apr_version.h 22 * @brief APR Versioning Interface 23 * 24 * APR's Version 25 * 26 * There are several different mechanisms for accessing the version. There 27 * is a string form, and a set of numbers; in addition, there are constants 28 * which can be compiled into your application, and you can query the library 29 * being used for its actual version. 30 * 31 * Note that it is possible for an application to detect that it has been 32 * compiled against a different version of APR by use of the compile-time 33 * constants and the use of the run-time query function. 34 * 35 * APR version numbering follows the guidelines specified in: 36 * 37 * http://apr.apache.org/versioning.html 38 */ 39 40 41 /* The numeric compile-time version constants. These constants are the 42 * authoritative version numbers for APR. 43 */ 44 45 /** major version 46 * Major API changes that could cause compatibility problems for older 47 * programs such as structure size changes. No binary compatibility is 48 * possible across a change in the major version. 49 */ 50 #define APR_MAJOR_VERSION 1 51 52 /** minor version 53 * Minor API changes that do not cause binary compatibility problems. 54 * Reset to 0 when upgrading APR_MAJOR_VERSION 55 */ 56 #define APR_MINOR_VERSION 2 57 58 /** patch level 59 * The Patch Level never includes API changes, simply bug fixes. 60 * Reset to 0 when upgrading APR_MINOR_VERSION 61 */ 62 #define APR_PATCH_VERSION 8 63 64 /** 65 * The symbol APR_IS_DEV_VERSION is only defined for internal, 66 * "development" copies of APR. It is undefined for released versions 67 * of APR. 68 */ 69 /* #define APR_IS_DEV_VERSION */ 70 71 72 #if defined(APR_IS_DEV_VERSION) || defined(DOXYGEN) 73 /** Internal: string form of the "is dev" flag */ 74 #define APR_IS_DEV_STRING "-dev" 75 #else 76 #define APR_IS_DEV_STRING "" 77 #endif 78 79 /* APR_STRINGIFY is defined here, and also in apr_general.h, so wrap it */ 80 #ifndef APR_STRINGIFY 81 /** Properly quote a value as a string in the C preprocessor */ 82 #define APR_STRINGIFY(n) APR_STRINGIFY_HELPER(n) 83 /** Helper macro for APR_STRINGIFY */ 84 #define APR_STRINGIFY_HELPER(n) #n 85 #endif 86 87 /** The formatted string of APR's version */ 88 #define APR_VERSION_STRING \ 89 APR_STRINGIFY(APR_MAJOR_VERSION) "." \ 90 APR_STRINGIFY(APR_MINOR_VERSION) "." \ 91 APR_STRINGIFY(APR_PATCH_VERSION) \ 92 APR_IS_DEV_STRING 93 94 /** An alternative formatted string of APR's version */ 95 /* macro for Win32 .rc files using numeric csv representation */ 96 #define APR_VERSION_STRING_CSV APR_MAJOR_VERSION ##, \ 97 ##APR_MINOR_VERSION ##, \ 98 ##APR_PATCH_VERSION 99 100 101 #ifndef APR_VERSION_ONLY 102 103 /* The C language API to access the version at run time, 104 * as opposed to compile time. APR_VERSION_ONLY may be defined 105 * externally when preprocessing apr_version.h to obtain strictly 106 * the C Preprocessor macro declarations. 107 */ 108 109 #include "apr.h" 110 111 #ifdef __cplusplus 112 extern "C" { 113 #endif 114 115 /** 116 * The numeric version information is broken out into fields within this 117 * structure. 118 */ 119 typedef struct { 120 int major; /**< major number */ 121 int minor; /**< minor number */ 122 int patch; /**< patch number */ 123 int is_dev; /**< is development (1 or 0) */ 124 } apr_version_t; 125 126 /** 127 * Return APR's version information information in a numeric form. 128 * 129 * @param pvsn Pointer to a version structure for returning the version 130 * information. 131 */ 132 APR_DECLARE(void) apr_version(apr_version_t *pvsn); 133 134 /** Return APR's version information as a string. */ 135 APR_DECLARE(const char *) apr_version_string(void); 136 137 #ifdef __cplusplus 138 } 139 #endif 140 141 #endif /* ndef APR_VERSION_ONLY */ 142 143 #endif /* ndef APR_VERSION_H */ 144