ViewVC logotype

Contents of /code/tags/pcre-7.0/config.h.in

Parent Directory Parent Directory | Revision Log Revision Log

Revision 94 - (show annotations)
Sat Feb 24 21:41:45 2007 UTC (14 years, 2 months ago) by nigel
File size: 6154 byte(s)
Tag code/trunk as code/tags/pcre-7.0.
2 /* On Unix-like systems config.in is converted by "configure" into config.h.
3 Some other environments also support the use of "configure". PCRE is written in
4 Standard C, but there are a few non-standard things it can cope with, allowing
5 it to run on SunOS4 and other "close to standard" systems.
7 On a non-Unix-like system you should just copy this file into config.h, and set
8 up the macros the way you need them. You should normally change the definitions
9 of HAVE_STRERROR and HAVE_MEMMOVE to 1. Unfortunately, because of the way
10 autoconf works, these cannot be made the defaults. If your system has bcopy()
11 and not memmove(), change the definition of HAVE_BCOPY instead of HAVE_MEMMOVE.
12 If your system has neither bcopy() nor memmove(), leave them both as 0; an
13 emulation function will be used. */
15 /* If you are compiling for a system that uses EBCDIC instead of ASCII
16 character codes, define this macro as 1. On systems that can use "configure",
17 this can be done via --enable-ebcdic. */
19 #ifndef EBCDIC
20 #define EBCDIC 0
21 #endif
23 /* If you are compiling for a system other than a Unix-like system or Win32,
24 and it needs some magic to be inserted before the definition of a function that
25 is exported by the library, define this macro to contain the relevant magic. If
26 you do not define this macro, it defaults to "extern" for a C compiler and
27 "extern C" for a C++ compiler on non-Win32 systems. This macro apears at the
28 start of every exported function that is part of the external API. It does not
29 appear on functions that are "external" in the C sense, but which are internal
30 to the library. */
32 /* #define PCRE_DATA_SCOPE */
34 /* Define the following macro to empty if the "const" keyword does not work. */
36 #undef const
38 /* Define the following macro to "unsigned" if <stddef.h> does not define
39 size_t. */
41 #undef size_t
43 /* The following two definitions are mainly for the benefit of SunOS4, which
44 does not have the strerror() or memmove() functions that should be present in
45 all Standard C libraries. The macros HAVE_STRERROR and HAVE_MEMMOVE should
46 normally be defined with the value 1 for other systems, but unfortunately we
47 cannot make this the default because "configure" files generated by autoconf
48 will only change 0 to 1; they won't change 1 to 0 if the functions are not
49 found. */
51 #define HAVE_STRERROR 0
52 #define HAVE_MEMMOVE 0
54 /* There are some non-Unix-like systems that don't even have bcopy(). If this
55 macro is false, an emulation is used. If HAVE_MEMMOVE is set to 1, the value of
56 HAVE_BCOPY is not relevant. */
58 #define HAVE_BCOPY 0
60 /* The value of NEWLINE determines the newline character. The default is to
61 leave it up to the compiler, but some sites want to force a particular value.
62 On Unix-like systems, "configure" can be used to override this default. */
64 #ifndef NEWLINE
65 #define NEWLINE '\n'
66 #endif
68 /* The value of LINK_SIZE determines the number of bytes used to store links as
69 offsets within the compiled regex. The default is 2, which allows for compiled
70 patterns up to 64K long. This covers the vast majority of cases. However, PCRE
71 can also be compiled to use 3 or 4 bytes instead. This allows for longer
72 patterns in extreme cases. On systems that support it, "configure" can be used
73 to override this default. */
75 #ifndef LINK_SIZE
76 #define LINK_SIZE 2
77 #endif
79 /* When calling PCRE via the POSIX interface, additional working storage is
80 required for holding the pointers to capturing substrings because PCRE requires
81 three integers per substring, whereas the POSIX interface provides only two. If
82 the number of expected substrings is small, the wrapper function uses space on
83 the stack, because this is faster than using malloc() for each call. The
84 threshold above which the stack is no longer used is defined by POSIX_MALLOC_
85 THRESHOLD. On systems that support it, "configure" can be used to override this
86 default. */
90 #endif
92 /* PCRE uses recursive function calls to handle backtracking while matching.
93 This can sometimes be a problem on systems that have stacks of limited size.
94 Define NO_RECURSE to get a version that doesn't use recursion in the match()
95 function; instead it creates its own stack by steam using pcre_recurse_malloc()
96 to obtain memory from the heap. For more detail, see the comments and other
97 stuff just above the match() function. On systems that support it, "configure"
98 can be used to set this in the Makefile (use --disable-stack-for-recursion). */
100 /* #define NO_RECURSE */
102 /* The value of MATCH_LIMIT determines the default number of times the internal
103 match() function can be called during a single execution of pcre_exec(). There
104 is a runtime interface for setting a different limit. The limit exists in order
105 to catch runaway regular expressions that take for ever to determine that they
106 do not match. The default is set very large so that it does not accidentally
107 catch legitimate cases. On systems that support it, "configure" can be used to
108 override this default default. */
110 #ifndef MATCH_LIMIT
111 #define MATCH_LIMIT 10000000
112 #endif
114 /* The above limit applies to all calls of match(), whether or not they
115 increase the recursion depth. In some environments it is desirable to limit the
116 depth of recursive calls of match() more strictly, in order to restrict the
117 maximum amount of stack (or heap, if NO_RECURSE is defined) that is used. The
118 value of MATCH_LIMIT_RECURSION applies only to recursive calls of match(). To
119 have any useful effect, it must be less than the value of MATCH_LIMIT. There is
120 a runtime method for setting a different limit. On systems that support it,
121 "configure" can be used to override this default default. */
125 #endif
127 /* These three limits are parameterized just in case anybody ever wants to
128 change them. Care must be taken if they are increased, because they guard
129 against integer overflow caused by enormously large patterns. */
131 #ifndef MAX_NAME_SIZE
132 #define MAX_NAME_SIZE 32
133 #endif
135 #ifndef MAX_NAME_COUNT
136 #define MAX_NAME_COUNT 10000
137 #endif
139 #ifndef MAX_DUPLENGTH
140 #define MAX_DUPLENGTH 30000
141 #endif
143 /* End */

  ViewVC Help
Powered by ViewVC 1.1.5