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Diffstat (limited to 'include/curl/curlrules.h')
| -rw-r--r-- | include/curl/curlrules.h | 149 |
1 files changed, 149 insertions, 0 deletions
diff --git a/include/curl/curlrules.h b/include/curl/curlrules.h new file mode 100644 index 000000000..56499f9a2 --- /dev/null +++ b/include/curl/curlrules.h @@ -0,0 +1,149 @@ +#ifndef __CURL_CURLRULES_H +#define __CURL_CURLRULES_H +/*************************************************************************** + * _ _ ____ _ + * Project ___| | | | _ \| | + * / __| | | | |_) | | + * | (__| |_| | _ <| |___ + * \___|\___/|_| \_\_____| + * + * Copyright (C) 1998 - 2008, Daniel Stenberg, <daniel@haxx.se>, et al. + * + * This software is licensed as described in the file COPYING, which + * you should have received as part of this distribution. The terms + * are also available at http://curl.haxx.se/docs/copyright.html. + * + * You may opt to use, copy, modify, merge, publish, distribute and/or sell + * copies of the Software, and permit persons to whom the Software is + * furnished to do so, under the terms of the COPYING file. + * + * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY + * KIND, either express or implied. + * + * $Id$ + ***************************************************************************/ + +/* ================================================================ */ +/* COMPILE TIME SANITY CHECKS */ +/* ================================================================ */ + +/* + * NOTE 1: + * ------- + * + * All checks done in this file are intentionally placed in a public + * header file which is pulled by curl/curl.h when an application is + * being built using an already built libcurl library. Additionally + * this file is also included and used when building the library. + * + * If compilation fails on this file it is certainly sure that the + * problem is elsewhere. It could be a problem in the curlbuild.h + * header file, or simply that you are using different compilation + * settings than those used to build the library. + * + * Nothing in this file is intended to be modified or adjusted by the + * curl library user nor by the curl library builder. + * + * Do not deactivate any check, these are done to make sure that the + * library is properly built and used. + * + * You can find further help on the libcurl development mailing list: + * http://cool.haxx.se/mailman/listinfo/curl-library/ + * + * NOTE 2 + * ------ + * + * Some of the following compile time checks are based on the fact + * that the dimension of a constant array can not be a negative one. + * In this way if the compile time verification fails, the compilation + * will fail issuing an error. The error description wording is compiler + * dependant but it will be quite similar to one of the following: + * + * "negative subscript or subscript is too large" + * "array must have at least one element" + * "-1 is an illegal array size" + * "size of array is negative" + * + * If you are building an application which tries to use an already + * built libcurl library and you are getting this kind of errors on + * this file, it is a clear indication that there is a mismatch between + * how the library was built and how you are trying to use it for your + * application. Your already compiled or binary library provider is the + * only one who can give you the details you need to properly use it. + */ + +/* + * Verify that some macros are actually defined. + */ + +#ifndef CURL_OFF_T +# error "CURL_OFF_T definition is missing!" + Error Compilation_aborted_CURL_OFF_T_is_missing +#endif + +#ifndef CURL_FMT_OFF_T +# error "CURL_FMT_OFF_T definition is missing!" + Error Compilation_aborted_CURL_FMT_OFF_T_is_missing +#endif + +#ifndef CURL_FMT_OFF_TU +# error "CURL_FMT_OFF_TU definition is missing!" + Error Compilation_aborted_CURL_FMT_OFF_TU_is_missing +#endif + +#ifndef CURL_FORMAT_OFF_T +# error "CURL_FORMAT_OFF_T definition is missing!" + Error Compilation_aborted_CURL_FORMAT_OFF_T_is_missing +#endif + +#ifndef CURL_SIZEOF_CURL_OFF_T +# error "CURL_SIZEOF_CURL_OFF_T definition is missing!" + Error Compilation_aborted_CURL_SIZEOF_CURL_OFF_T_is_missing +#endif + +/* + * Macros private to this header file. + */ + +#define CurlchkszEQ(t, s) sizeof(t) == s ? 1 : -1 + +#define CurlchkszGE(t1, t2) sizeof(t1) >= sizeof(t2) ? 1 : -1 + +/* + * Verify that the size previously defined and expected for + * curl_off_t is actually the the same as the one reported + * by sizeof() at compile time. + */ + +typedef char + __curl_rule_01__ + [CurlchkszEQ(curl_off_t, CURL_SIZEOF_CURL_OFF_T)]; + +/* + * Verify at compile time that the size of curl_off_t as reported + * by sizeof() is greater or equal than the one reported for long + * for the current compilation. + */ + +typedef char + __curl_rule_02__ + [CurlchkszGE(curl_off_t, long)]; + +/* + * Get rid of macros private to this header file. + */ + +#undef CurlchkszEQ +#undef CurlchkszGE + +/* + * Get rid of macros not intended to exist beyond this point. + */ + +#undef CURL_PULL_SYS_TYPES_H +#undef CURL_PULL_STDINT_H +#undef CURL_PULL_INTTYPES_H + +#undef CURL_OFF_T + +#endif /* __CURL_CURLRULES_H */ |