1#ifndef __CURL_CURLRULES_H 2#define __CURL_CURLRULES_H 3/*************************************************************************** 4 * _ _ ____ _ 5 * Project ___| | | | _ \| | 6 * / __| | | | |_) | | 7 * | (__| |_| | _ <| |___ 8 * \___|\___/|_| \_\_____| 9 * 10 * Copyright (C) 1998 - 2011, Daniel Stenberg, <daniel@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 http://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 * http://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_SIZEOF_LONG 79# error "CURL_SIZEOF_LONG definition is missing!" 80 Error Compilation_aborted_CURL_SIZEOF_LONG_is_missing 81#endif 82 83#ifndef CURL_TYPEOF_CURL_SOCKLEN_T 84# error "CURL_TYPEOF_CURL_SOCKLEN_T definition is missing!" 85 Error Compilation_aborted_CURL_TYPEOF_CURL_SOCKLEN_T_is_missing 86#endif 87 88#ifndef CURL_SIZEOF_CURL_SOCKLEN_T 89# error "CURL_SIZEOF_CURL_SOCKLEN_T definition is missing!" 90 Error Compilation_aborted_CURL_SIZEOF_CURL_SOCKLEN_T_is_missing 91#endif 92 93#ifndef CURL_TYPEOF_CURL_OFF_T 94# error "CURL_TYPEOF_CURL_OFF_T definition is missing!" 95 Error Compilation_aborted_CURL_TYPEOF_CURL_OFF_T_is_missing 96#endif 97 98#ifndef CURL_FORMAT_CURL_OFF_T 99# error "CURL_FORMAT_CURL_OFF_T definition is missing!" 100 Error Compilation_aborted_CURL_FORMAT_CURL_OFF_T_is_missing 101#endif 102 103#ifndef CURL_FORMAT_CURL_OFF_TU 104# error "CURL_FORMAT_CURL_OFF_TU definition is missing!" 105 Error Compilation_aborted_CURL_FORMAT_CURL_OFF_TU_is_missing 106#endif 107 108#ifndef CURL_FORMAT_OFF_T 109# error "CURL_FORMAT_OFF_T definition is missing!" 110 Error Compilation_aborted_CURL_FORMAT_OFF_T_is_missing 111#endif 112 113#ifndef CURL_SIZEOF_CURL_OFF_T 114# error "CURL_SIZEOF_CURL_OFF_T definition is missing!" 115 Error Compilation_aborted_CURL_SIZEOF_CURL_OFF_T_is_missing 116#endif 117 118#ifndef CURL_SUFFIX_CURL_OFF_T 119# error "CURL_SUFFIX_CURL_OFF_T definition is missing!" 120 Error Compilation_aborted_CURL_SUFFIX_CURL_OFF_T_is_missing 121#endif 122 123#ifndef CURL_SUFFIX_CURL_OFF_TU 124# error "CURL_SUFFIX_CURL_OFF_TU definition is missing!" 125 Error Compilation_aborted_CURL_SUFFIX_CURL_OFF_TU_is_missing 126#endif 127 128/* 129 * Macros private to this header file. 130 */ 131 132#define CurlchkszEQ(t, s) sizeof(t) == s ? 1 : -1 133 134#define CurlchkszGE(t1, t2) sizeof(t1) >= sizeof(t2) ? 1 : -1 135 136/* 137 * Verify that the size previously defined and expected for long 138 * is the same as the one reported by sizeof() at compile time. 139 */ 140 141typedef char 142 __curl_rule_01__ 143 [CurlchkszEQ(long, CURL_SIZEOF_LONG)]; 144 145/* 146 * Verify that the size previously defined and expected for 147 * curl_off_t is actually the the same as the one reported 148 * by sizeof() at compile time. 149 */ 150 151typedef char 152 __curl_rule_02__ 153 [CurlchkszEQ(curl_off_t, CURL_SIZEOF_CURL_OFF_T)]; 154 155/* 156 * Verify at compile time that the size of curl_off_t as reported 157 * by sizeof() is greater or equal than the one reported for long 158 * for the current compilation. 159 */ 160 161typedef char 162 __curl_rule_03__ 163 [CurlchkszGE(curl_off_t, long)]; 164 165/* 166 * Verify that the size previously defined and expected for 167 * curl_socklen_t is actually the the same as the one reported 168 * by sizeof() at compile time. 169 */ 170 171typedef char 172 __curl_rule_04__ 173 [CurlchkszEQ(curl_socklen_t, CURL_SIZEOF_CURL_SOCKLEN_T)]; 174 175/* 176 * Verify at compile time that the size of curl_socklen_t as reported 177 * by sizeof() is greater or equal than the one reported for int for 178 * the current compilation. 179 */ 180 181typedef char 182 __curl_rule_05__ 183 [CurlchkszGE(curl_socklen_t, int)]; 184 185/* ================================================================ */ 186/* EXTERNALLY AND INTERNALLY VISIBLE DEFINITIONS */ 187/* ================================================================ */ 188 189/* 190 * CURL_ISOCPP and CURL_OFF_T_C definitions are done here in order to allow 191 * these to be visible and exported by the external libcurl interface API, 192 * while also making them visible to the library internals, simply including 193 * setup.h, without actually needing to include curl.h internally. 194 * If some day this section would grow big enough, all this should be moved 195 * to its own header file. 196 */ 197 198/* 199 * Figure out if we can use the ## preprocessor operator, which is supported 200 * by ISO/ANSI C and C++. Some compilers support it without setting __STDC__ 201 * or __cplusplus so we need to carefully check for them too. 202 */ 203 204#if defined(__STDC__) || defined(_MSC_VER) || defined(__cplusplus) || \ 205 defined(__HP_aCC) || defined(__BORLANDC__) || defined(__LCC__) || \ 206 defined(__POCC__) || defined(__SALFORDC__) || defined(__HIGHC__) || \ 207 defined(__ILEC400__) 208 /* This compiler is believed to have an ISO compatible preprocessor */ 209#define CURL_ISOCPP 210#else 211 /* This compiler is believed NOT to have an ISO compatible preprocessor */ 212#undef CURL_ISOCPP 213#endif 214 215/* 216 * Macros for minimum-width signed and unsigned curl_off_t integer constants. 217 */ 218 219#if defined(__BORLANDC__) && (__BORLANDC__ == 0x0551) 220# define __CURL_OFF_T_C_HLPR2(x) x 221# define __CURL_OFF_T_C_HLPR1(x) __CURL_OFF_T_C_HLPR2(x) 222# define CURL_OFF_T_C(Val) __CURL_OFF_T_C_HLPR1(Val) ## \ 223 __CURL_OFF_T_C_HLPR1(CURL_SUFFIX_CURL_OFF_T) 224# define CURL_OFF_TU_C(Val) __CURL_OFF_T_C_HLPR1(Val) ## \ 225 __CURL_OFF_T_C_HLPR1(CURL_SUFFIX_CURL_OFF_TU) 226#else 227# ifdef CURL_ISOCPP 228# define __CURL_OFF_T_C_HLPR2(Val,Suffix) Val ## Suffix 229# else 230# define __CURL_OFF_T_C_HLPR2(Val,Suffix) Val/**/Suffix 231# endif 232# define __CURL_OFF_T_C_HLPR1(Val,Suffix) __CURL_OFF_T_C_HLPR2(Val,Suffix) 233# define CURL_OFF_T_C(Val) __CURL_OFF_T_C_HLPR1(Val,CURL_SUFFIX_CURL_OFF_T) 234# define CURL_OFF_TU_C(Val) __CURL_OFF_T_C_HLPR1(Val,CURL_SUFFIX_CURL_OFF_TU) 235#endif 236 237/* 238 * Get rid of macros private to this header file. 239 */ 240 241#undef CurlchkszEQ 242#undef CurlchkszGE 243 244/* 245 * Get rid of macros not intended to exist beyond this point. 246 */ 247 248#undef CURL_PULL_WS2TCPIP_H 249#undef CURL_PULL_SYS_TYPES_H 250#undef CURL_PULL_SYS_SOCKET_H 251#undef CURL_PULL_STDINT_H 252#undef CURL_PULL_INTTYPES_H 253 254#undef CURL_TYPEOF_CURL_SOCKLEN_T 255#undef CURL_TYPEOF_CURL_OFF_T 256 257#ifdef CURL_NO_OLDIES 258#undef CURL_FORMAT_OFF_T /* not required since 7.19.0 - obsoleted in 7.20.0 */ 259#endif 260 261#endif /* __CURL_CURLRULES_H */ 262