1 /* Dirty system-dependent hacks.
2 Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
3 2004, 2005, 2006, 2007 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 In addition, as a special exception, the Free Software Foundation
21 gives permission to link the code of its release of Wget with the
22 OpenSSL project's "OpenSSL" library (or with modified versions of it
23 that use the same license as the "OpenSSL" library), and distribute
24 the linked executables. You must obey the GNU General Public License
25 in all respects for all of the code used other than "OpenSSL". If you
26 modify this file, you may extend this exception to your version of the
27 file, but you are not obligated to do so. If you do not wish to do
28 so, delete this exception statement from your version. */
30 /* This file is included by wget.h. Random .c files need not include
36 /* Testing for __sun is not enough because it's also defined on SunOS. */
43 /* The "namespace tweaks" below attempt to set a friendly "compilation
44 environment" under popular operating systems. Default compilation
45 environment often means that some functions that are "extensions"
46 are not declared -- `strptime' is one example.
48 But non-default environments can expose bugs in the system header
49 files, crippling compilation in _very_ non-obvious ways. Because
50 of that, we define them only on well-tested architectures where we
51 know they will work. */
53 #undef NAMESPACE_TWEAKS
56 # define NAMESPACE_TWEAKS
60 # define NAMESPACE_TWEAKS
63 #ifdef NAMESPACE_TWEAKS
65 /* Request the "Unix 98 compilation environment". */
66 #define _XOPEN_SOURCE 500
68 /* For Solaris: request everything else that is available and doesn't
69 conflict with the above. */
70 #define __EXTENSIONS__
72 /* For Linux: request features of 4.3BSD and SVID (System V Interface
77 /* Under glibc-based systems we want all GNU extensions as well. This
78 declares some unnecessary cruft, but also useful functions such as
79 timegm, FNM_CASEFOLD extension to fnmatch, memrchr, etc. */
82 #endif /* NAMESPACE_TWEAKS */
85 /* Alloca declaration, based on recommendation in the Autoconf manual.
86 These have to be after the above namespace tweaks, but before any
87 non-preprocessor code. */
94 # define alloca _alloca
96 #elif defined __GNUC__
97 # define alloca __builtin_alloca
99 # define alloca __alloca
105 void *alloca (size_t);
108 /* Must include these, so we can test for the missing stat macros and
109 define them as necessary. */
110 #include <sys/types.h>
111 #include <sys/stat.h>
113 #ifdef HAVE_INTTYPES_H
114 # include <inttypes.h>
118 /* Windows doesn't have some functions normally found on Unix-like
119 systems, such as strcasecmp, strptime, etc. Include mswindows.h so
120 we get the declarations for their replacements in mswindows.c, as
121 well as to pick up Windows-specific includes and constants. To be
122 able to test for such features, the file must be included as early
124 # include "mswindows.h"
127 /* Provide support for C99-type boolean type "bool". This blurb comes
128 straight from the Autoconf 2.59 manual. */
130 # include <stdbool.h>
136 typedef unsigned char _Bool;
142 # define __bool_true_false_are_defined 1
145 /* Needed for compilation under OS/2 and MSDOS */
146 #if defined(__EMX__) || defined(MSDOS)
148 # define S_ISLNK(m) 0
153 #endif /* __EMX__ || MSDOS */
155 /* Reportedly, stat() macros are broken on some old systems. Those
156 systems will have to fend for themselves, as I will not introduce
157 new code to handle it.
159 However, I will add code for *missing* macros, and the following
160 are reportedly missing from many systems. */
162 # define S_ISLNK(m) (((m) & S_IFMT) == S_IFLNK)
165 # define S_ISDIR(m) (((m) & (_S_IFMT)) == (_S_IFDIR))
168 # define S_ISREG(m) (((m) & _S_IFMT) == _S_IFREG)
171 /* These are needed so we can #define struct_stat to struct _stati64
174 # define struct_stat struct stat
177 # define struct_fstat struct stat
180 /* For CHAR_BIT, LONG_MAX, etc. */
187 /* From gnulib, simplified to assume a signed type. */
188 #define TYPE_MAXIMUM(t) ((t) (~ (~ (t) 0 << (sizeof (t) * CHAR_BIT - 1))))
190 /* These are defined in cmpt.c if missing, so we must declare
192 #ifndef HAVE_STRCASECMP
195 #ifndef HAVE_STRNCASECMP
198 #ifndef HAVE_STRPTIME
203 time_t timegm (struct tm *);
206 void *memrchr (const void *, int, size_t);
209 /* These are defined in snprintf.c. It would be nice to have an
210 snprintf.h, though. */
211 #ifndef HAVE_SNPRINTF
214 #ifndef HAVE_VSNPRINTF
218 /* Some systems (Linux libc5, "NCR MP-RAS 3.0", and others) don't
219 provide MAP_FAILED, a symbolic constant for the value returned by
220 mmap() when it doesn't work. Usually, this constant should be -1.
221 This only makes sense for files that use mmap() and include
222 sys/mman.h *before* sysdep.h, but doesn't hurt others. */
225 # define MAP_FAILED ((void *) -1)
228 /* Enable system fnmatch only on systems where fnmatch.h is usable.
229 If the fnmatch on your system is buggy, undef this symbol and a
230 replacement implementation will be used instead. */
231 #ifdef HAVE_WORKING_FNMATCH_H
232 # define SYSTEM_FNMATCH
235 #ifdef SYSTEM_FNMATCH
236 # include <fnmatch.h>
237 #else /* not SYSTEM_FNMATCH */
238 /* Define fnmatch flags. Undef them first to avoid warnings in case
239 an evil library include chose to include system fnmatch.h. */
245 # define FNM_PATHNAME (1 << 0) /* No wildcard can ever match `/'. */
246 # define FNM_NOESCAPE (1 << 1) /* Backslashes don't quote special chars. */
247 # define FNM_PERIOD (1 << 2) /* Leading `.' is matched only explicitly. */
248 # define FNM_NOMATCH 1
250 int fnmatch (const char *, const char *, int);
253 /* Provide sig_atomic_t if the system doesn't. */
254 #ifndef HAVE_SIG_ATOMIC_T
255 typedef int sig_atomic_t;
258 /* Provide uint32_t on the platforms that don't define it. Although
259 most code should be agnostic about integer sizes, some code really
260 does need a 32-bit integral type. Such code should use uint32_t.
261 (The exception is gnu-md5.[ch], which uses its own detection for
262 portability across platforms.) */
264 #ifndef HAVE_UINT32_T
266 typedef unsigned int uint32_t;
268 # if SIZEOF_LONG == 4
269 typedef unsigned long uint32_t;
271 # if SIZEOF_SHORT == 4
272 typedef unsigned short uint32_t;
274 #error "Cannot determine a 32-bit unsigned integer type"
280 /* If uintptr_t isn't defined, simply typedef it to unsigned long. */
281 #ifndef HAVE_UINTPTR_T
282 typedef unsigned long uintptr_t;
285 /* If intptr_t isn't defined, simply typedef it to long. */
286 #ifndef HAVE_INTPTR_T
287 typedef long intptr_t;
290 #endif /* SYSDEP_H */