/* Dirty system-dependent hacks.
- Copyright (C) 1995, 1996, 1997, 1998, 2000 Free Software Foundation, Inc.
+ Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
+ 2004, 2005, 2006, 2007, 2008 Free Software Foundation, Inc.
-This file is part of Wget.
+This file is part of GNU Wget.
-This program is free software; you can redistribute it and/or modify
+GNU Wget is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 2 of the License, or (at
+the Free Software Foundation; either version 3 of the License, or (at
your option) any later version.
-This program is distributed in the hope that it will be useful,
+GNU Wget is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
-along with this program; if not, write to the Free Software
-Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
+along with Wget. If not, see <http://www.gnu.org/licenses/>.
+
+Additional permission under GNU GPL version 3 section 7
+
+If you modify this program, or any covered work, by linking or
+combining it with the OpenSSL project's OpenSSL library (or a
+modified version of that library), containing parts covered by the
+terms of the OpenSSL or SSLeay licenses, the Free Software Foundation
+grants you additional permission to convey the resulting work.
+Corresponding Source for a non-source form of such a combination
+shall include the source code for the parts of OpenSSL used as well
+as that of the covered work. */
/* This file is included by wget.h. Random .c files need not include
it. */
#ifndef SYSDEP_H
#define SYSDEP_H
-/* We need these to be playing with various stuff. */
-#ifdef TIME_WITH_SYS_TIME
-# include <sys/time.h>
-# include <time.h>
-#else /* not TIME_WITH_SYS_TIME_H */
-#ifdef HAVE_SYS_TIME_H
-# include <sys/time.h>
-#else /* not HAVE_SYS_TIME_H */
-# include <time.h>
-#endif /* HAVE_SYS_TIME_H */
-#endif /* TIME_WITH_SYS_TIME_H */
+/* Testing for __sun is not enough because it's also defined on SunOS. */
+#ifdef __sun
+# ifdef __SVR4
+# define solaris
+# endif
+#endif
+
+/* The "namespace tweaks" below attempt to set a friendly "compilation
+ environment" under popular operating systems. Default compilation
+ environment often means that some functions that are "extensions"
+ are not declared -- `strptime' is one example.
+
+ But non-default environments can expose bugs in the system header
+ files, crippling compilation in _very_ non-obvious ways. Because
+ of that, we define them only on well-tested architectures where we
+ know they will work. */
+
+#undef NAMESPACE_TWEAKS
+
+#ifdef solaris
+# define NAMESPACE_TWEAKS
+#endif
+
+#if defined(__linux__) || defined(__GLIBC__)
+# define NAMESPACE_TWEAKS
+#endif
+
+#ifdef NAMESPACE_TWEAKS
+
+/* Request the "Unix 98 compilation environment". */
+#define _XOPEN_SOURCE 500
+
+/* For Solaris: request everything else that is available and doesn't
+ conflict with the above. */
+/* #define __EXTENSIONS__ */ /* XXX clashes with config.h */
+
+/* For Linux: request features of 4.3BSD and SVID (System V Interface
+ Definition). */
+#define _SVID_SOURCE
+#define _BSD_SOURCE
+/* Under glibc-based systems we want all GNU extensions as well. This
+ declares some unnecessary cruft, but also useful functions such as
+ timegm, FNM_CASEFOLD extension to fnmatch, memrchr, etc. */
+/* #define _GNU_SOURCE */ /* XXX clashes with config.h */
+
+#endif /* NAMESPACE_TWEAKS */
+
+
+/* Alloca declaration, based on recommendation in the Autoconf manual.
+ These have to be after the above namespace tweaks, but before any
+ non-preprocessor code. */
+
+#if HAVE_ALLOCA_H
+# include <alloca.h>
+#elif defined WINDOWS
+# include <malloc.h>
+# ifndef alloca
+# define alloca _alloca
+# endif
+#elif defined __GNUC__
+# define alloca __builtin_alloca
+#elif defined _AIX
+# define alloca __alloca
+#else
+# include <stddef.h>
+# ifdef __cplusplus
+extern "C"
+# endif
+void *alloca (size_t);
+#endif
+
+/* Must include these, so we can test for the missing stat macros and
+ define them as necessary. */
#include <sys/types.h>
#include <sys/stat.h>
-#ifdef WINDOWS
-/* Windows doesn't have some functions. Include mswindows.h so we get
- their declarations, as well as some additional declarations and
- macros. This must come first, so it can set things up. */
-#include <mswindows.h>
-#endif /* WINDOWS */
-
-/* Watcom-specific stuff. In practice this is probably specific to
- Windows, although Watcom exists under other OS's too. For that
- reason, we keep this here. */
-
-#ifdef __WATCOMC__
-/* Watcom has its own alloca() defined in malloc.h malloc.h needs to
- be included in the sources to prevent 'undefined external' errors
- at the link phase. */
-# include <malloc.h>
-/* io.h defines unlink() and chmod(). We put this here because it's
- way too obscure to require all the .c files to observe. */
-# include <io.h>
-#endif /* __WATCOMC__ */
+#ifdef HAVE_INTTYPES_H
+ /* Compaq C V6.5-303 (dtk) on HP Tru64 UNIX V5.1B (Rev. 2650) needs: */
+# include <stdint.h>
+# include <inttypes.h>
+#endif
-/* Needed for compilation under OS/2: */
-#ifdef __EMX__
-#ifndef S_ISLNK
-# define S_ISLNK(m) 0
+#ifdef WINDOWS
+/* Windows doesn't have some functions normally found on Unix-like
+ systems, such as strcasecmp, strptime, etc. Include mswindows.h so
+ we get the declarations for their replacements in mswindows.c, as
+ well as to pick up Windows-specific includes and constants. To be
+ able to test for such features, the file must be included as early
+ as possible. */
+# include "mswindows.h"
#endif
-#ifndef lstat
-# define lstat stat
+
+/* Provide support for C99-type boolean type "bool". This blurb comes
+ straight from the Autoconf 2.59 manual. */
+#if HAVE_STDBOOL_H
+# include <stdbool.h>
+#else
+# if ! HAVE__BOOL
+# ifdef __cplusplus
+typedef bool _Bool;
+# else
+typedef unsigned char _Bool;
+# endif
+# endif
+# define bool _Bool
+# define false 0
+# define true 1
+# define __bool_true_false_are_defined 1
#endif
-#endif /* __EMX__ */
+
+/* Needed for compilation under OS/2 and MSDOS */
+#if defined(__EMX__) || defined(MSDOS)
+# ifndef S_ISLNK
+# define S_ISLNK(m) 0
+# endif
+# ifndef lstat
+# define lstat stat
+# endif
+#endif /* __EMX__ || MSDOS */
/* Reportedly, stat() macros are broken on some old systems. Those
systems will have to fend for themselves, as I will not introduce
new code to handle it.
However, I will add code for *missing* macros, and the following
- are missing from many systems. */
+ are reportedly missing from many systems. */
#ifndef S_ISLNK
# define S_ISLNK(m) (((m) & S_IFMT) == S_IFLNK)
#endif
# define S_ISREG(m) (((m) & _S_IFMT) == _S_IFREG)
#endif
-/* Bletch! SPARC compiler doesn't define sparc (needed by
- arpa/nameser.h) when in -Xc mode. Luckily, it always defines
- __sparc. */
-#ifdef __sparc
-#ifndef sparc
-#define sparc
+/* These are needed so we can #define struct_stat to struct _stati64
+ under Windows. */
+#ifndef struct_stat
+# define struct_stat struct stat
#endif
+#ifndef struct_fstat
+# define struct_fstat struct stat
#endif
-/* mswindows.h defines these. */
-#ifndef READ
-# define READ(fd, buf, cnt) read ((fd), (buf), (cnt))
-#endif
-#ifndef WRITE
-# define WRITE(fd, buf, cnt) write ((fd), (buf), (cnt))
-#endif
-#ifndef REALCLOSE
-# define REALCLOSE(x) close (x)
-#endif
-
-#define CLOSE(x) \
-do { \
- REALCLOSE (x); \
- DEBUGP (("Closing fd %d\n", x)); \
-} while (0)
-
-/* Define a large ("very long") type useful for storing large
- non-negative quantities that exceed sizes of normal download, such
- as the *total* number of bytes downloaded. To fit today's needs,
- this needs to be an integral type at least 64 bits wide. On the
- machines where `long' is 64-bit, we use long. Otherwise, we check
- whether `long long' is available and if yes, use that. If long
- long is unavailable, we give up and just use `long'.
+/* For CHAR_BIT, LONG_MAX, etc. */
+#include <limits.h>
- This check could be smarter and moved to configure, which could
- check for a bunch of non-standard types such as uint64_t. But I
- don't see the need for it -- the current test will work on all
- modern architectures, and if it fails, nothing bad happens, we just
- end up with long.
-
- Note: you cannot use VERY_LONG_TYPE along with printf(). When you
- need to print it, use very_long_to_string(). */
+#ifndef CHAR_BIT
+# define CHAR_BIT 8
+#endif
-#if (SIZEOF_LONG >= 8) || !defined(HAVE_LONG_LONG)
-/* either long is "big enough", or long long is unavailable which
- leaves long as the only choice. */
-# define VERY_LONG_TYPE unsigned long
-#else /* use long long */
-/* long is smaller than 8 bytes, but long long is available. */
-# define VERY_LONG_TYPE unsigned long long
-#endif /* use long long */
+/* From gnulib, simplified to assume a signed type. */
+#define TYPE_MAXIMUM(t) ((t) (~ (~ (t) 0 << (sizeof (t) * CHAR_BIT - 1))))
-/* Defined in cmpt.c: */
-#ifndef HAVE_STRERROR
-char *strerror ();
-#endif
+/* These are defined in cmpt.c if missing, so we must declare
+ them. */
#ifndef HAVE_STRCASECMP
int strcasecmp ();
#endif
#ifndef HAVE_STRNCASECMP
int strncasecmp ();
#endif
-#ifndef HAVE_STRSTR
-char *strstr ();
-#endif
#ifndef HAVE_STRPTIME
char *strptime ();
#endif
+#ifndef HAVE_TIMEGM
+# include <time.h>
+time_t timegm (struct tm *);
+#endif
+#ifndef HAVE_MEMRCHR
+void *memrchr (const void *, int, size_t);
+#endif
+
+/* These are defined in snprintf.c. It would be nice to have an
+ snprintf.h, though. */
+#ifndef HAVE_SNPRINTF
+int snprintf ();
+#endif
#ifndef HAVE_VSNPRINTF
int vsnprintf ();
#endif
-/* SunOS brain damage -- for some reason, SunOS header files fail to
- declare the functions below, which causes all kinds of problems
- (compiling errors) with pointer arithmetic and similar.
-
- This used to be only within `#ifdef STDC_HEADERS', but it got
- tripped on other systems (AIX), thus causing havoc. Fortunately,
- SunOS appears to be the only system braindamaged that badly, so I
- added an extra `#ifdef sun' guard. */
-#ifndef STDC_HEADERS
-#ifdef sun
-#ifndef __cplusplus
-char *strstr ();
-char *strchr ();
-char *strrchr ();
-char *strtok ();
-char *strdup ();
-void *memcpy ();
-#endif /* not __cplusplus */
-#endif /* sun */
-#endif /* STDC_HEADERS */
+/* Some systems (Linux libc5, "NCR MP-RAS 3.0", and others) don't
+ provide MAP_FAILED, a symbolic constant for the value returned by
+ mmap() when it doesn't work. Usually, this constant should be -1.
+ This only makes sense for files that use mmap() and include
+ sys/mman.h *before* sysdep.h, but doesn't hurt others. */
+
+#ifndef MAP_FAILED
+# define MAP_FAILED ((void *) -1)
+#endif
+
+/* Enable system fnmatch only on systems where fnmatch.h is usable.
+ If the fnmatch on your system is buggy, undef this symbol and a
+ replacement implementation will be used instead. */
+#ifdef HAVE_WORKING_FNMATCH_H
+# define SYSTEM_FNMATCH
+#endif
+
+#ifdef SYSTEM_FNMATCH
+# include <fnmatch.h>
+#else /* not SYSTEM_FNMATCH */
+/* Define fnmatch flags. Undef them first to avoid warnings in case
+ an evil library include chose to include system fnmatch.h. */
+# undef FNM_PATHNAME
+# undef FNM_NOESCAPE
+# undef FNM_PERIOD
+# undef FNM_NOMATCH
+
+# define FNM_PATHNAME (1 << 0) /* No wildcard can ever match `/'. */
+# define FNM_NOESCAPE (1 << 1) /* Backslashes don't quote special chars. */
+# define FNM_PERIOD (1 << 2) /* Leading `.' is matched only explicitly. */
+# define FNM_NOMATCH 1
+
+int fnmatch (const char *, const char *, int);
+#endif
+
+/* Provide sig_atomic_t if the system doesn't. */
+#ifndef HAVE_SIG_ATOMIC_T
+typedef int sig_atomic_t;
+#endif
+
+/* Provide uint32_t on the platforms that don't define it. Although
+ most code should be agnostic about integer sizes, some code really
+ does need a 32-bit integral type. Such code should use uint32_t.
+ (The exception is gnu-md5.[ch], which uses its own detection for
+ portability across platforms.) */
+
+#ifndef HAVE_UINT32_T
+# if SIZEOF_INT == 4
+typedef unsigned int uint32_t;
+# else
+# if SIZEOF_LONG == 4
+typedef unsigned long uint32_t;
+# else
+# if SIZEOF_SHORT == 4
+typedef unsigned short uint32_t;
+# else
+ #error "Cannot determine a 32-bit unsigned integer type"
+# endif
+# endif
+# endif
+#endif
+
+/* If uintptr_t isn't defined, simply typedef it to unsigned long. */
+#ifndef HAVE_UINTPTR_T
+typedef unsigned long uintptr_t;
+#endif
+
+/* If intptr_t isn't defined, simply typedef it to long. */
+#ifndef HAVE_INTPTR_T
+typedef long intptr_t;
+#endif
#endif /* SYSDEP_H */