1 /* Dirty system-dependent hacks.
2 Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
3 2004, 2005, 2006, 2007, 2008 Free Software Foundation, Inc.
5 This file is part of GNU Wget.
7 GNU Wget is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or (at
10 your option) any later version.
12 GNU Wget is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with Wget. If not, see <http://www.gnu.org/licenses/>.
20 Additional permission under GNU GPL version 3 section 7
22 If you modify this program, or any covered work, by linking or
23 combining it with the OpenSSL project's OpenSSL library (or a
24 modified version of that library), containing parts covered by the
25 terms of the OpenSSL or SSLeay licenses, the Free Software Foundation
26 grants you additional permission to convey the resulting work.
27 Corresponding Source for a non-source form of such a combination
28 shall include the source code for the parts of OpenSSL used as well
29 as that of the covered work. */
31 /* This file is included by wget.h. Random .c files need not include
37 /* Testing for __sun is not enough because it's also defined on SunOS. */
44 /* The "namespace tweaks" below attempt to set a friendly "compilation
45 environment" under popular operating systems. Default compilation
46 environment often means that some functions that are "extensions"
47 are not declared -- `strptime' is one example.
49 But non-default environments can expose bugs in the system header
50 files, crippling compilation in _very_ non-obvious ways. Because
51 of that, we define them only on well-tested architectures where we
52 know they will work. */
54 #undef NAMESPACE_TWEAKS
57 # define NAMESPACE_TWEAKS
61 # define NAMESPACE_TWEAKS
64 #ifdef NAMESPACE_TWEAKS
66 /* Request the "Unix 98 compilation environment". */
67 #define _XOPEN_SOURCE 500
69 /* For Solaris: request everything else that is available and doesn't
70 conflict with the above. */
71 /* #define __EXTENSIONS__ */ /* XXX clashes with config.h */
73 /* For Linux: request features of 4.3BSD and SVID (System V Interface
78 /* Under glibc-based systems we want all GNU extensions as well. This
79 declares some unnecessary cruft, but also useful functions such as
80 timegm, FNM_CASEFOLD extension to fnmatch, memrchr, etc. */
81 /* #define _GNU_SOURCE */ /* XXX clashes with config.h */
83 #endif /* NAMESPACE_TWEAKS */
86 /* Alloca declaration, based on recommendation in the Autoconf manual.
87 These have to be after the above namespace tweaks, but before any
88 non-preprocessor code. */
95 # define alloca _alloca
97 #elif defined __GNUC__
98 # define alloca __builtin_alloca
100 # define alloca __alloca
106 void *alloca (size_t);
109 /* Must include these, so we can test for the missing stat macros and
110 define them as necessary. */
111 #include <sys/types.h>
112 #include <sys/stat.h>
114 #ifdef HAVE_INTTYPES_H
115 /* Compaq C V6.5-303 (dtk) on HP Tru64 UNIX V5.1B (Rev. 2650) needs: */
117 # include <inttypes.h>
121 /* Windows doesn't have some functions normally found on Unix-like
122 systems, such as strcasecmp, strptime, etc. Include mswindows.h so
123 we get the declarations for their replacements in mswindows.c, as
124 well as to pick up Windows-specific includes and constants. To be
125 able to test for such features, the file must be included as early
127 # include "mswindows.h"
130 /* Provide support for C99-type boolean type "bool". This blurb comes
131 straight from the Autoconf 2.59 manual. */
133 # include <stdbool.h>
139 typedef unsigned char _Bool;
145 # define __bool_true_false_are_defined 1
148 /* Needed for compilation under OS/2 and MSDOS */
149 #if defined(__EMX__) || defined(MSDOS)
151 # define S_ISLNK(m) 0
156 #endif /* __EMX__ || MSDOS */
158 /* Reportedly, stat() macros are broken on some old systems. Those
159 systems will have to fend for themselves, as I will not introduce
160 new code to handle it.
162 However, I will add code for *missing* macros, and the following
163 are reportedly missing from many systems. */
165 # define S_ISLNK(m) (((m) & S_IFMT) == S_IFLNK)
168 # define S_ISDIR(m) (((m) & (_S_IFMT)) == (_S_IFDIR))
171 # define S_ISREG(m) (((m) & _S_IFMT) == _S_IFREG)
174 /* These are needed so we can #define struct_stat to struct _stati64
177 # define struct_stat struct stat
180 # define struct_fstat struct stat
183 /* For CHAR_BIT, LONG_MAX, etc. */
190 /* From gnulib, simplified to assume a signed type. */
191 #define TYPE_MAXIMUM(t) ((t) (~ (~ (t) 0 << (sizeof (t) * CHAR_BIT - 1))))
193 /* These are defined in cmpt.c if missing, so we must declare
195 #ifndef HAVE_STRCASECMP
198 #ifndef HAVE_STRNCASECMP
201 #ifndef HAVE_STRPTIME
206 time_t timegm (struct tm *);
209 void *memrchr (const void *, int, size_t);
212 /* These are defined in snprintf.c. It would be nice to have an
213 snprintf.h, though. */
214 #ifndef HAVE_SNPRINTF
217 #ifndef HAVE_VSNPRINTF
221 /* Some systems (Linux libc5, "NCR MP-RAS 3.0", and others) don't
222 provide MAP_FAILED, a symbolic constant for the value returned by
223 mmap() when it doesn't work. Usually, this constant should be -1.
224 This only makes sense for files that use mmap() and include
225 sys/mman.h *before* sysdep.h, but doesn't hurt others. */
228 # define MAP_FAILED ((void *) -1)
231 /* Enable system fnmatch only on systems where fnmatch.h is usable.
232 If the fnmatch on your system is buggy, undef this symbol and a
233 replacement implementation will be used instead. */
234 #ifdef HAVE_WORKING_FNMATCH_H
235 # define SYSTEM_FNMATCH
238 #ifdef SYSTEM_FNMATCH
239 # include <fnmatch.h>
240 #else /* not SYSTEM_FNMATCH */
241 /* Define fnmatch flags. Undef them first to avoid warnings in case
242 an evil library include chose to include system fnmatch.h. */
248 # define FNM_PATHNAME (1 << 0) /* No wildcard can ever match `/'. */
249 # define FNM_NOESCAPE (1 << 1) /* Backslashes don't quote special chars. */
250 # define FNM_PERIOD (1 << 2) /* Leading `.' is matched only explicitly. */
251 # define FNM_NOMATCH 1
253 int fnmatch (const char *, const char *, int);
256 /* Provide sig_atomic_t if the system doesn't. */
257 #ifndef HAVE_SIG_ATOMIC_T
258 typedef int sig_atomic_t;
261 /* Provide uint32_t on the platforms that don't define it. Although
262 most code should be agnostic about integer sizes, some code really
263 does need a 32-bit integral type. Such code should use uint32_t.
264 (The exception is gnu-md5.[ch], which uses its own detection for
265 portability across platforms.) */
267 #ifndef HAVE_UINT32_T
269 typedef unsigned int uint32_t;
271 # if SIZEOF_LONG == 4
272 typedef unsigned long uint32_t;
274 # if SIZEOF_SHORT == 4
275 typedef unsigned short uint32_t;
277 #error "Cannot determine a 32-bit unsigned integer type"
283 /* If uintptr_t isn't defined, simply typedef it to unsigned long. */
284 #ifndef HAVE_UINTPTR_T
285 typedef unsigned long uintptr_t;
288 /* If intptr_t isn't defined, simply typedef it to long. */
289 #ifndef HAVE_INTPTR_T
290 typedef long intptr_t;
293 #endif /* SYSDEP_H */