1 #ifndef __CURL_CURLRULES_H 2 #define __CURL_CURLRULES_H 3 /*************************************************************************** 4 * _ _ ____ _ 5 * Project ___| | | | _ \| | 6 * / __| | | | |_) | | 7 * | (__| |_| | _ <| |___ 8 * \___|\___/|_| \_\_____| 9 * 10 * Copyright (C) 1998 - 2012, Daniel Stenberg, <daniel (at) haxx.se>, et al. 11 * 12 * This software is licensed as described in the file COPYING, which 13 * you should have received as part of this distribution. The terms 14 * are also available at https://curl.haxx.se/docs/copyright.html. 15 * 16 * You may opt to use, copy, modify, merge, publish, distribute and/or sell 17 * copies of the Software, and permit persons to whom the Software is 18 * furnished to do so, under the terms of the COPYING file. 19 * 20 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY 21 * KIND, either express or implied. 22 * 23 ***************************************************************************/ 24 25 /* ================================================================ */ 26 /* COMPILE TIME SANITY CHECKS */ 27 /* ================================================================ */ 28 29 /* 30 * NOTE 1: 31 * ------- 32 * 33 * All checks done in this file are intentionally placed in a public 34 * header file which is pulled by curl/curl.h when an application is 35 * being built using an already built libcurl library. Additionally 36 * this file is also included and used when building the library. 37 * 38 * If compilation fails on this file it is certainly sure that the 39 * problem is elsewhere. It could be a problem in the curlbuild.h 40 * header file, or simply that you are using different compilation 41 * settings than those used to build the library. 42 * 43 * Nothing in this file is intended to be modified or adjusted by the 44 * curl library user nor by the curl library builder. 45 * 46 * Do not deactivate any check, these are done to make sure that the 47 * library is properly built and used. 48 * 49 * You can find further help on the libcurl development mailing list: 50 * https://cool.haxx.se/mailman/listinfo/curl-library/ 51 * 52 * NOTE 2 53 * ------ 54 * 55 * Some of the following compile time checks are based on the fact 56 * that the dimension of a constant array can not be a negative one. 57 * In this way if the compile time verification fails, the compilation 58 * will fail issuing an error. The error description wording is compiler 59 * dependent but it will be quite similar to one of the following: 60 * 61 * "negative subscript or subscript is too large" 62 * "array must have at least one element" 63 * "-1 is an illegal array size" 64 * "size of array is negative" 65 * 66 * If you are building an application which tries to use an already 67 * built libcurl library and you are getting this kind of errors on 68 * this file, it is a clear indication that there is a mismatch between 69 * how the library was built and how you are trying to use it for your 70 * application. Your already compiled or binary library provider is the 71 * only one who can give you the details you need to properly use it. 72 */ 73 74 /* 75 * Verify that some macros are actually defined. 76 */ 77 78 #ifndef CURL_TYPEOF_CURL_SOCKLEN_T 79 # error "CURL_TYPEOF_CURL_SOCKLEN_T definition is missing!" 80 Error Compilation_aborted_CURL_TYPEOF_CURL_SOCKLEN_T_is_missing 81 #endif 82 83 #ifndef CURL_SIZEOF_CURL_SOCKLEN_T 84 # error "CURL_SIZEOF_CURL_SOCKLEN_T definition is missing!" 85 Error Compilation_aborted_CURL_SIZEOF_CURL_SOCKLEN_T_is_missing 86 #endif 87 88 #ifndef CURL_TYPEOF_CURL_OFF_T 89 # error "CURL_TYPEOF_CURL_OFF_T definition is missing!" 90 Error Compilation_aborted_CURL_TYPEOF_CURL_OFF_T_is_missing 91 #endif 92 93 #ifndef CURL_FORMAT_CURL_OFF_T 94 # error "CURL_FORMAT_CURL_OFF_T definition is missing!" 95 Error Compilation_aborted_CURL_FORMAT_CURL_OFF_T_is_missing 96 #endif 97 98 #ifndef CURL_FORMAT_CURL_OFF_TU 99 # error "CURL_FORMAT_CURL_OFF_TU definition is missing!" 100 Error Compilation_aborted_CURL_FORMAT_CURL_OFF_TU_is_missing 101 #endif 102 103 #ifndef CURL_FORMAT_OFF_T 104 # error "CURL_FORMAT_OFF_T definition is missing!" 105 Error Compilation_aborted_CURL_FORMAT_OFF_T_is_missing 106 #endif 107 108 #ifndef CURL_SIZEOF_CURL_OFF_T 109 # error "CURL_SIZEOF_CURL_OFF_T definition is missing!" 110 Error Compilation_aborted_CURL_SIZEOF_CURL_OFF_T_is_missing 111 #endif 112 113 #ifndef CURL_SUFFIX_CURL_OFF_T 114 # error "CURL_SUFFIX_CURL_OFF_T definition is missing!" 115 Error Compilation_aborted_CURL_SUFFIX_CURL_OFF_T_is_missing 116 #endif 117 118 #ifndef CURL_SUFFIX_CURL_OFF_TU 119 # error "CURL_SUFFIX_CURL_OFF_TU definition is missing!" 120 Error Compilation_aborted_CURL_SUFFIX_CURL_OFF_TU_is_missing 121 #endif 122 123 /* 124 * Macros private to this header file. 125 */ 126 127 #define CurlchkszEQ(t, s) sizeof(t) == s ? 1 : -1 128 129 #define CurlchkszGE(t1, t2) sizeof(t1) >= sizeof(t2) ? 1 : -1 130 131 /* 132 * Verify that the size previously defined and expected for 133 * curl_off_t is actually the the same as the one reported 134 * by sizeof() at compile time. 135 */ 136 137 typedef char 138 __curl_rule_02__ 139 [CurlchkszEQ(curl_off_t, CURL_SIZEOF_CURL_OFF_T)]; 140 141 /* 142 * Verify at compile time that the size of curl_off_t as reported 143 * by sizeof() is greater or equal than the one reported for long 144 * for the current compilation. 145 */ 146 147 typedef char 148 __curl_rule_03__ 149 [CurlchkszGE(curl_off_t, long)]; 150 151 /* 152 * Verify that the size previously defined and expected for 153 * curl_socklen_t is actually the the same as the one reported 154 * by sizeof() at compile time. 155 */ 156 157 typedef char 158 __curl_rule_04__ 159 [CurlchkszEQ(curl_socklen_t, CURL_SIZEOF_CURL_SOCKLEN_T)]; 160 161 /* 162 * Verify at compile time that the size of curl_socklen_t as reported 163 * by sizeof() is greater or equal than the one reported for int for 164 * the current compilation. 165 */ 166 167 typedef char 168 __curl_rule_05__ 169 [CurlchkszGE(curl_socklen_t, int)]; 170 171 /* ================================================================ */ 172 /* EXTERNALLY AND INTERNALLY VISIBLE DEFINITIONS */ 173 /* ================================================================ */ 174 175 /* 176 * CURL_ISOCPP and CURL_OFF_T_C definitions are done here in order to allow 177 * these to be visible and exported by the external libcurl interface API, 178 * while also making them visible to the library internals, simply including 179 * curl_setup.h, without actually needing to include curl.h internally. 180 * If some day this section would grow big enough, all this should be moved 181 * to its own header file. 182 */ 183 184 /* 185 * Figure out if we can use the ## preprocessor operator, which is supported 186 * by ISO/ANSI C and C++. Some compilers support it without setting __STDC__ 187 * or __cplusplus so we need to carefully check for them too. 188 */ 189 190 #if defined(__STDC__) || defined(_MSC_VER) || defined(__cplusplus) || \ 191 defined(__HP_aCC) || defined(__BORLANDC__) || defined(__LCC__) || \ 192 defined(__POCC__) || defined(__SALFORDC__) || defined(__HIGHC__) || \ 193 defined(__ILEC400__) 194 /* This compiler is believed to have an ISO compatible preprocessor */ 195 #define CURL_ISOCPP 196 #else 197 /* This compiler is believed NOT to have an ISO compatible preprocessor */ 198 #undef CURL_ISOCPP 199 #endif 200 201 /* 202 * Macros for minimum-width signed and unsigned curl_off_t integer constants. 203 */ 204 205 #if defined(__BORLANDC__) && (__BORLANDC__ == 0x0551) 206 # define __CURL_OFF_T_C_HLPR2(x) x 207 # define __CURL_OFF_T_C_HLPR1(x) __CURL_OFF_T_C_HLPR2(x) 208 # define CURL_OFF_T_C(Val) __CURL_OFF_T_C_HLPR1(Val) ## \ 209 __CURL_OFF_T_C_HLPR1(CURL_SUFFIX_CURL_OFF_T) 210 # define CURL_OFF_TU_C(Val) __CURL_OFF_T_C_HLPR1(Val) ## \ 211 __CURL_OFF_T_C_HLPR1(CURL_SUFFIX_CURL_OFF_TU) 212 #else 213 # ifdef CURL_ISOCPP 214 # define __CURL_OFF_T_C_HLPR2(Val,Suffix) Val ## Suffix 215 # else 216 # define __CURL_OFF_T_C_HLPR2(Val,Suffix) Val/**/Suffix 217 # endif 218 # define __CURL_OFF_T_C_HLPR1(Val,Suffix) __CURL_OFF_T_C_HLPR2(Val,Suffix) 219 # define CURL_OFF_T_C(Val) __CURL_OFF_T_C_HLPR1(Val,CURL_SUFFIX_CURL_OFF_T) 220 # define CURL_OFF_TU_C(Val) __CURL_OFF_T_C_HLPR1(Val,CURL_SUFFIX_CURL_OFF_TU) 221 #endif 222 223 /* 224 * Get rid of macros private to this header file. 225 */ 226 227 #undef CurlchkszEQ 228 #undef CurlchkszGE 229 230 /* 231 * Get rid of macros not intended to exist beyond this point. 232 */ 233 234 #undef CURL_PULL_WS2TCPIP_H 235 #undef CURL_PULL_SYS_TYPES_H 236 #undef CURL_PULL_SYS_SOCKET_H 237 #undef CURL_PULL_SYS_POLL_H 238 #undef CURL_PULL_STDINT_H 239 #undef CURL_PULL_INTTYPES_H 240 241 #undef CURL_TYPEOF_CURL_SOCKLEN_T 242 #undef CURL_TYPEOF_CURL_OFF_T 243 244 #ifdef CURL_NO_OLDIES 245 #undef CURL_FORMAT_OFF_T /* not required since 7.19.0 - obsoleted in 7.20.0 */ 246 #endif 247 248 #endif /* __CURL_CURLRULES_H */ 249
