1 /* Dirty system-dependent hacks.
2 Copyright (C) 1995, 1996, 1997, 1998, 2000 Free Software Foundation, Inc.
4 This file is part of GNU Wget.
6 GNU Wget is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or (at
9 your option) any later version.
11 GNU Wget is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with Wget; if not, write to the Free Software
18 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
20 /* This file is included by wget.h. Random .c files need not include
26 /* We need these to be playing with various stuff. */
27 #ifdef TIME_WITH_SYS_TIME
28 # include <sys/time.h>
30 #else /* not TIME_WITH_SYS_TIME_H */
31 #ifdef HAVE_SYS_TIME_H
32 # include <sys/time.h>
33 #else /* not HAVE_SYS_TIME_H */
35 #endif /* HAVE_SYS_TIME_H */
36 #endif /* TIME_WITH_SYS_TIME_H */
38 #include <sys/types.h>
42 /* Windows doesn't have some functions. Include mswindows.h so we get
43 their declarations, as well as some additional declarations and
44 macros. This must come first, so it can set things up. */
45 #include <mswindows.h>
48 /* Watcom-specific stuff. In practice this is probably specific to
49 Windows, although Watcom exists under other OS's too. For that
50 reason, we keep this here. */
53 /* Watcom has its own alloca() defined in malloc.h malloc.h needs to
54 be included in the sources to prevent 'undefined external' errors
57 /* io.h defines unlink() and chmod(). We put this here because it's
58 way too obscure to require all the .c files to observe. */
60 #endif /* __WATCOMC__ */
62 /* Needed for compilation under OS/2: */
72 /* Reportedly, stat() macros are broken on some old systems. Those
73 systems will have to fend for themselves, as I will not introduce
74 new code to handle it.
76 However, I will add code for *missing* macros, and the following
77 are missing from many systems. */
79 # define S_ISLNK(m) (((m) & S_IFMT) == S_IFLNK)
82 # define S_ISDIR(m) (((m) & (_S_IFMT)) == (_S_IFDIR))
85 # define S_ISREG(m) (((m) & _S_IFMT) == _S_IFREG)
88 /* Bletch! SPARC compiler doesn't define sparc (needed by
89 arpa/nameser.h) when in -Xc mode. Luckily, it always defines
97 /* mswindows.h defines these. */
99 # define READ(fd, buf, cnt) read ((fd), (buf), (cnt))
102 # define WRITE(fd, buf, cnt) write ((fd), (buf), (cnt))
105 # define REALCLOSE(x) close (x)
111 DEBUGP (("Closing fd %d\n", x)); \
114 /* Define a large ("very long") type useful for storing large
115 non-negative quantities that exceed sizes of normal download, such
116 as the *total* number of bytes downloaded. To fit today's needs,
117 this needs to be an integral type at least 64 bits wide. On the
118 machines where `long' is 64-bit, we use long. Otherwise, we check
119 whether `long long' is available and if yes, use that. If long
120 long is unavailable, we give up and just use `long'.
122 This check could be smarter and moved to configure, which could
123 check for a bunch of non-standard types such as uint64_t. But I
124 don't see the need for it -- the current test will work on all
125 modern architectures, and if it fails, nothing bad happens, we just
128 Note: you cannot use VERY_LONG_TYPE along with printf(). When you
129 need to print it, use very_long_to_string(). */
131 #if (SIZEOF_LONG >= 8) || !defined(HAVE_LONG_LONG)
132 /* either long is "big enough", or long long is unavailable which
133 leaves long as the only choice. */
134 # define VERY_LONG_TYPE unsigned long
135 #else /* use long long */
136 /* long is smaller than 8 bytes, but long long is available. */
137 # define VERY_LONG_TYPE unsigned long long
138 #endif /* use long long */
140 /* Defined in cmpt.c: */
141 #ifndef HAVE_STRERROR
144 #ifndef HAVE_STRCASECMP
147 #ifndef HAVE_STRNCASECMP
153 #ifndef HAVE_STRPTIME
156 #ifndef HAVE_VSNPRINTF
160 /* SunOS brain damage -- for some reason, SunOS header files fail to
161 declare the functions below, which causes all kinds of problems
162 (compiling errors) with pointer arithmetic and similar.
164 This used to be only within `#ifdef STDC_HEADERS', but it got
165 tripped on other systems (AIX), thus causing havoc. Fortunately,
166 SunOS appears to be the only system braindamaged that badly, so I
167 added an extra `#ifdef sun' guard. */
177 #endif /* not __cplusplus */
179 #endif /* STDC_HEADERS */
181 /* Some systems don't provide MAP_FAILED, a symbolic constant for the
182 value returned by mmap() when it doesn't work. Usually, this
183 constant should be -1. This only makes sense for files that use
184 mmap() and include sys/mman.h *before* sysdep.h, but doesn't hurt
188 # define MAP_FAILED ((void *) -1)
191 #endif /* SYSDEP_H */