/[pcre]/code/tags/pcre-4.5/config.in
ViewVC logotype

Contents of /code/tags/pcre-4.5/config.in

Parent Directory Parent Directory | Revision Log Revision Log


Revision 74 - (show annotations) (download)
Sat Feb 24 21:40:32 2007 UTC (7 years, 5 months ago) by nigel
File size: 4512 byte(s)
Tag code/trunk as code/tags/pcre-4.5.

1
2 /* On Unix systems config.in is converted by configure into config.h. PCRE is
3 written in Standard C, but there are a few non-standard things it can cope
4 with, allowing it to run on SunOS4 and other "close to standard" systems.
5
6 On a non-Unix system you should just copy this file into config.h, and set up
7 the macros the way you need them. You should normally change the definitions of
8 HAVE_STRERROR and HAVE_MEMMOVE to 1. Unfortunately, because of the way autoconf
9 works, these cannot be made the defaults. If your system has bcopy() and not
10 memmove(), change the definition of HAVE_BCOPY instead of HAVE_MEMMOVE. If your
11 system has neither bcopy() nor memmove(), leave them both as 0; an emulation
12 function will be used. */
13
14 /* If you are compiling for a system that uses EBCDIC instead of ASCII
15 character codes, define this macro as 1. On systems that can use "configure",
16 this can be done via --enable-ebcdic. */
17
18 #ifndef EBCDIC
19 #define EBCDIC 0
20 #endif
21
22 /* If you are compiling for a system that needs some magic to be inserted
23 before the definition of an exported function, define this macro to contain the
24 relevant magic. It apears at the start of every exported function. */
25
26 #define EXPORT
27
28 /* Define to empty if the "const" keyword does not work. */
29
30 #undef const
31
32 /* Define to "unsigned" if <stddef.h> doesn't define size_t. */
33
34 #undef size_t
35
36 /* The following two definitions are mainly for the benefit of SunOS4, which
37 doesn't have the strerror() or memmove() functions that should be present in
38 all Standard C libraries. The macros HAVE_STRERROR and HAVE_MEMMOVE should
39 normally be defined with the value 1 for other systems, but unfortunately we
40 can't make this the default because "configure" files generated by autoconf
41 will only change 0 to 1; they won't change 1 to 0 if the functions are not
42 found. */
43
44 #define HAVE_STRERROR 0
45 #define HAVE_MEMMOVE 0
46
47 /* There are some non-Unix systems that don't even have bcopy(). If this macro
48 is false, an emulation is used. If HAVE_MEMMOVE is set to 1, the value of
49 HAVE_BCOPY is not relevant. */
50
51 #define HAVE_BCOPY 0
52
53 /* The value of NEWLINE determines the newline character. The default is to
54 leave it up to the compiler, but some sites want to force a particular value.
55 On Unix systems, "configure" can be used to override this default. */
56
57 #ifndef NEWLINE
58 #define NEWLINE '\n'
59 #endif
60
61 /* The value of LINK_SIZE determines the number of bytes used to store
62 links as offsets within the compiled regex. The default is 2, which allows for
63 compiled patterns up to 64K long. This covers the vast majority of cases.
64 However, PCRE can also be compiled to use 3 or 4 bytes instead. This allows for
65 longer patterns in extreme cases. On Unix systems, "configure" can be used to
66 override this default. */
67
68 #ifndef LINK_SIZE
69 #define LINK_SIZE 2
70 #endif
71
72 /* The value of MATCH_LIMIT determines the default number of times the match()
73 function can be called during a single execution of pcre_exec(). (There is a
74 runtime method of setting a different limit.) The limit exists in order to
75 catch runaway regular expressions that take for ever to determine that they do
76 not match. The default is set very large so that it does not accidentally catch
77 legitimate cases. On Unix systems, "configure" can be used to override this
78 default default. */
79
80 #ifndef MATCH_LIMIT
81 #define MATCH_LIMIT 10000000
82 #endif
83
84 /* When calling PCRE via the POSIX interface, additional working storage is
85 required for holding the pointers to capturing substrings because PCRE requires
86 three integers per substring, whereas the POSIX interface provides only two. If
87 the number of expected substrings is small, the wrapper function uses space on
88 the stack, because this is faster than using malloc() for each call. The
89 threshold above which the stack is no longer use is defined by POSIX_MALLOC_
90 THRESHOLD. On Unix systems, "configure" can be used to override this default.
91 */
92
93 #ifndef POSIX_MALLOC_THRESHOLD
94 #define POSIX_MALLOC_THRESHOLD 10
95 #endif
96
97 /* PCRE uses recursive function calls to handle backtracking while matching.
98 This can sometimes be a problem on systems that have stacks of limited size.
99 Define NO_RECURSE to get a version that doesn't use recursion in the match()
100 function; instead it creates its own stack by steam using pcre_recurse_malloc
101 to get memory. For more detail, see comments and other stuff just above the
102 match() function. On Unix systems, "configure" can be used to set this in the
103 Makefile (use --disable-recursion). */
104
105 /* #define NO_RECURSE */
106
107 /* End */

webmaster@exim.org
ViewVC Help
Powered by ViewVC 1.1.12